(function (factory) {
	typeof define === 'function' && define.amd ? define(factory) :
	factory();
}(function () { 'use strict';

	var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};

	function createCommonjsModule(fn, module) {
		return module = { exports: {} }, fn(module, module.exports), module.exports;
	}

	var O = 'object';
	var check = function (it) {
	  return it && it.Math == Math && it;
	};

	// https://github.com/zloirock/core-js/issues/86#issuecomment-115759028
	var global_1 =
	  // eslint-disable-next-line no-undef
	  check(typeof globalThis == O && globalThis) ||
	  check(typeof window == O && window) ||
	  check(typeof self == O && self) ||
	  check(typeof commonjsGlobal == O && commonjsGlobal) ||
	  // eslint-disable-next-line no-new-func
	  Function('return this')();

	var fails = function (exec) {
	  try {
	    return !!exec();
	  } catch (error) {
	    return true;
	  }
	};

	// Thank's IE8 for his funny defineProperty
	var descriptors = !fails(function () {
	  return Object.defineProperty({}, 'a', { get: function () { return 7; } }).a != 7;
	});

	var nativePropertyIsEnumerable = {}.propertyIsEnumerable;
	var getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;

	// Nashorn ~ JDK8 bug
	var NASHORN_BUG = getOwnPropertyDescriptor && !nativePropertyIsEnumerable.call({ 1: 2 }, 1);

	// `Object.prototype.propertyIsEnumerable` method implementation
	// https://tc39.github.io/ecma262/#sec-object.prototype.propertyisenumerable
	var f = NASHORN_BUG ? function propertyIsEnumerable(V) {
	  var descriptor = getOwnPropertyDescriptor(this, V);
	  return !!descriptor && descriptor.enumerable;
	} : nativePropertyIsEnumerable;

	var objectPropertyIsEnumerable = {
		f: f
	};

	var createPropertyDescriptor = function (bitmap, value) {
	  return {
	    enumerable: !(bitmap & 1),
	    configurable: !(bitmap & 2),
	    writable: !(bitmap & 4),
	    value: value
	  };
	};

	var toString = {}.toString;

	var classofRaw = function (it) {
	  return toString.call(it).slice(8, -1);
	};

	var split = ''.split;

	// fallback for non-array-like ES3 and non-enumerable old V8 strings
	var indexedObject = fails(function () {
	  // throws an error in rhino, see https://github.com/mozilla/rhino/issues/346
	  // eslint-disable-next-line no-prototype-builtins
	  return !Object('z').propertyIsEnumerable(0);
	}) ? function (it) {
	  return classofRaw(it) == 'String' ? split.call(it, '') : Object(it);
	} : Object;

	// `RequireObjectCoercible` abstract operation
	// https://tc39.github.io/ecma262/#sec-requireobjectcoercible
	var requireObjectCoercible = function (it) {
	  if (it == undefined) throw TypeError("Can't call method on " + it);
	  return it;
	};

	// toObject with fallback for non-array-like ES3 strings



	var toIndexedObject = function (it) {
	  return indexedObject(requireObjectCoercible(it));
	};

	var isObject = function (it) {
	  return typeof it === 'object' ? it !== null : typeof it === 'function';
	};

	// `ToPrimitive` abstract operation
	// https://tc39.github.io/ecma262/#sec-toprimitive
	// instead of the ES6 spec version, we didn't implement @@toPrimitive case
	// and the second argument - flag - preferred type is a string
	var toPrimitive = function (input, PREFERRED_STRING) {
	  if (!isObject(input)) return input;
	  var fn, val;
	  if (PREFERRED_STRING && typeof (fn = input.toString) == 'function' && !isObject(val = fn.call(input))) return val;
	  if (typeof (fn = input.valueOf) == 'function' && !isObject(val = fn.call(input))) return val;
	  if (!PREFERRED_STRING && typeof (fn = input.toString) == 'function' && !isObject(val = fn.call(input))) return val;
	  throw TypeError("Can't convert object to primitive value");
	};

	var hasOwnProperty = {}.hasOwnProperty;

	var has = function (it, key) {
	  return hasOwnProperty.call(it, key);
	};

	var document$1 = global_1.document;
	// typeof document.createElement is 'object' in old IE
	var EXISTS = isObject(document$1) && isObject(document$1.createElement);

	var documentCreateElement = function (it) {
	  return EXISTS ? document$1.createElement(it) : {};
	};

	// Thank's IE8 for his funny defineProperty
	var ie8DomDefine = !descriptors && !fails(function () {
	  return Object.defineProperty(documentCreateElement('div'), 'a', {
	    get: function () { return 7; }
	  }).a != 7;
	});

	var nativeGetOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;

	// `Object.getOwnPropertyDescriptor` method
	// https://tc39.github.io/ecma262/#sec-object.getownpropertydescriptor
	var f$1 = descriptors ? nativeGetOwnPropertyDescriptor : function getOwnPropertyDescriptor(O, P) {
	  O = toIndexedObject(O);
	  P = toPrimitive(P, true);
	  if (ie8DomDefine) try {
	    return nativeGetOwnPropertyDescriptor(O, P);
	  } catch (error) { /* empty */ }
	  if (has(O, P)) return createPropertyDescriptor(!objectPropertyIsEnumerable.f.call(O, P), O[P]);
	};

	var objectGetOwnPropertyDescriptor = {
		f: f$1
	};

	var anObject = function (it) {
	  if (!isObject(it)) {
	    throw TypeError(String(it) + ' is not an object');
	  } return it;
	};

	var nativeDefineProperty = Object.defineProperty;

	// `Object.defineProperty` method
	// https://tc39.github.io/ecma262/#sec-object.defineproperty
	var f$2 = descriptors ? nativeDefineProperty : function defineProperty(O, P, Attributes) {
	  anObject(O);
	  P = toPrimitive(P, true);
	  anObject(Attributes);
	  if (ie8DomDefine) try {
	    return nativeDefineProperty(O, P, Attributes);
	  } catch (error) { /* empty */ }
	  if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported');
	  if ('value' in Attributes) O[P] = Attributes.value;
	  return O;
	};

	var objectDefineProperty = {
		f: f$2
	};

	var hide = descriptors ? function (object, key, value) {
	  return objectDefineProperty.f(object, key, createPropertyDescriptor(1, value));
	} : function (object, key, value) {
	  object[key] = value;
	  return object;
	};

	var setGlobal = function (key, value) {
	  try {
	    hide(global_1, key, value);
	  } catch (error) {
	    global_1[key] = value;
	  } return value;
	};

	var isPure = false;

	var shared = createCommonjsModule(function (module) {
	var SHARED = '__core-js_shared__';
	var store = global_1[SHARED] || setGlobal(SHARED, {});

	(module.exports = function (key, value) {
	  return store[key] || (store[key] = value !== undefined ? value : {});
	})('versions', []).push({
	  version: '3.2.1',
	  mode: 'global',
	  copyright: '© 2019 Denis Pushkarev (zloirock.ru)'
	});
	});

	var functionToString = shared('native-function-to-string', Function.toString);

	var WeakMap = global_1.WeakMap;

	var nativeWeakMap = typeof WeakMap === 'function' && /native code/.test(functionToString.call(WeakMap));

	var id = 0;
	var postfix = Math.random();

	var uid = function (key) {
	  return 'Symbol(' + String(key === undefined ? '' : key) + ')_' + (++id + postfix).toString(36);
	};

	var keys = shared('keys');

	var sharedKey = function (key) {
	  return keys[key] || (keys[key] = uid(key));
	};

	var hiddenKeys = {};

	var WeakMap$1 = global_1.WeakMap;
	var set, get, has$1;

	var enforce = function (it) {
	  return has$1(it) ? get(it) : set(it, {});
	};

	var getterFor = function (TYPE) {
	  return function (it) {
	    var state;
	    if (!isObject(it) || (state = get(it)).type !== TYPE) {
	      throw TypeError('Incompatible receiver, ' + TYPE + ' required');
	    } return state;
	  };
	};

	if (nativeWeakMap) {
	  var store = new WeakMap$1();
	  var wmget = store.get;
	  var wmhas = store.has;
	  var wmset = store.set;
	  set = function (it, metadata) {
	    wmset.call(store, it, metadata);
	    return metadata;
	  };
	  get = function (it) {
	    return wmget.call(store, it) || {};
	  };
	  has$1 = function (it) {
	    return wmhas.call(store, it);
	  };
	} else {
	  var STATE = sharedKey('state');
	  hiddenKeys[STATE] = true;
	  set = function (it, metadata) {
	    hide(it, STATE, metadata);
	    return metadata;
	  };
	  get = function (it) {
	    return has(it, STATE) ? it[STATE] : {};
	  };
	  has$1 = function (it) {
	    return has(it, STATE);
	  };
	}

	var internalState = {
	  set: set,
	  get: get,
	  has: has$1,
	  enforce: enforce,
	  getterFor: getterFor
	};

	var redefine = createCommonjsModule(function (module) {
	var getInternalState = internalState.get;
	var enforceInternalState = internalState.enforce;
	var TEMPLATE = String(functionToString).split('toString');

	shared('inspectSource', function (it) {
	  return functionToString.call(it);
	});

	(module.exports = function (O, key, value, options) {
	  var unsafe = options ? !!options.unsafe : false;
	  var simple = options ? !!options.enumerable : false;
	  var noTargetGet = options ? !!options.noTargetGet : false;
	  if (typeof value == 'function') {
	    if (typeof key == 'string' && !has(value, 'name')) hide(value, 'name', key);
	    enforceInternalState(value).source = TEMPLATE.join(typeof key == 'string' ? key : '');
	  }
	  if (O === global_1) {
	    if (simple) O[key] = value;
	    else setGlobal(key, value);
	    return;
	  } else if (!unsafe) {
	    delete O[key];
	  } else if (!noTargetGet && O[key]) {
	    simple = true;
	  }
	  if (simple) O[key] = value;
	  else hide(O, key, value);
	// add fake Function#toString for correct work wrapped methods / constructors with methods like LoDash isNative
	})(Function.prototype, 'toString', function toString() {
	  return typeof this == 'function' && getInternalState(this).source || functionToString.call(this);
	});
	});

	var path = global_1;

	var aFunction = function (variable) {
	  return typeof variable == 'function' ? variable : undefined;
	};

	var getBuiltIn = function (namespace, method) {
	  return arguments.length < 2 ? aFunction(path[namespace]) || aFunction(global_1[namespace])
	    : path[namespace] && path[namespace][method] || global_1[namespace] && global_1[namespace][method];
	};

	var ceil = Math.ceil;
	var floor = Math.floor;

	// `ToInteger` abstract operation
	// https://tc39.github.io/ecma262/#sec-tointeger
	var toInteger = function (argument) {
	  return isNaN(argument = +argument) ? 0 : (argument > 0 ? floor : ceil)(argument);
	};

	var min = Math.min;

	// `ToLength` abstract operation
	// https://tc39.github.io/ecma262/#sec-tolength
	var toLength = function (argument) {
	  return argument > 0 ? min(toInteger(argument), 0x1FFFFFFFFFFFFF) : 0; // 2 ** 53 - 1 == 9007199254740991
	};

	var max = Math.max;
	var min$1 = Math.min;

	// Helper for a popular repeating case of the spec:
	// Let integer be ? ToInteger(index).
	// If integer < 0, let result be max((length + integer), 0); else let result be min(length, length).
	var toAbsoluteIndex = function (index, length) {
	  var integer = toInteger(index);
	  return integer < 0 ? max(integer + length, 0) : min$1(integer, length);
	};

	// `Array.prototype.{ indexOf, includes }` methods implementation
	var createMethod = function (IS_INCLUDES) {
	  return function ($this, el, fromIndex) {
	    var O = toIndexedObject($this);
	    var length = toLength(O.length);
	    var index = toAbsoluteIndex(fromIndex, length);
	    var value;
	    // Array#includes uses SameValueZero equality algorithm
	    // eslint-disable-next-line no-self-compare
	    if (IS_INCLUDES && el != el) while (length > index) {
	      value = O[index++];
	      // eslint-disable-next-line no-self-compare
	      if (value != value) return true;
	    // Array#indexOf ignores holes, Array#includes - not
	    } else for (;length > index; index++) {
	      if ((IS_INCLUDES || index in O) && O[index] === el) return IS_INCLUDES || index || 0;
	    } return !IS_INCLUDES && -1;
	  };
	};

	var arrayIncludes = {
	  // `Array.prototype.includes` method
	  // https://tc39.github.io/ecma262/#sec-array.prototype.includes
	  includes: createMethod(true),
	  // `Array.prototype.indexOf` method
	  // https://tc39.github.io/ecma262/#sec-array.prototype.indexof
	  indexOf: createMethod(false)
	};

	var indexOf = arrayIncludes.indexOf;


	var objectKeysInternal = function (object, names) {
	  var O = toIndexedObject(object);
	  var i = 0;
	  var result = [];
	  var key;
	  for (key in O) !has(hiddenKeys, key) && has(O, key) && result.push(key);
	  // Don't enum bug & hidden keys
	  while (names.length > i) if (has(O, key = names[i++])) {
	    ~indexOf(result, key) || result.push(key);
	  }
	  return result;
	};

	// IE8- don't enum bug keys
	var enumBugKeys = [
	  'constructor',
	  'hasOwnProperty',
	  'isPrototypeOf',
	  'propertyIsEnumerable',
	  'toLocaleString',
	  'toString',
	  'valueOf'
	];

	var hiddenKeys$1 = enumBugKeys.concat('length', 'prototype');

	// `Object.getOwnPropertyNames` method
	// https://tc39.github.io/ecma262/#sec-object.getownpropertynames
	var f$3 = Object.getOwnPropertyNames || function getOwnPropertyNames(O) {
	  return objectKeysInternal(O, hiddenKeys$1);
	};

	var objectGetOwnPropertyNames = {
		f: f$3
	};

	var f$4 = Object.getOwnPropertySymbols;

	var objectGetOwnPropertySymbols = {
		f: f$4
	};

	// all object keys, includes non-enumerable and symbols
	var ownKeys = getBuiltIn('Reflect', 'ownKeys') || function ownKeys(it) {
	  var keys = objectGetOwnPropertyNames.f(anObject(it));
	  var getOwnPropertySymbols = objectGetOwnPropertySymbols.f;
	  return getOwnPropertySymbols ? keys.concat(getOwnPropertySymbols(it)) : keys;
	};

	var copyConstructorProperties = function (target, source) {
	  var keys = ownKeys(source);
	  var defineProperty = objectDefineProperty.f;
	  var getOwnPropertyDescriptor = objectGetOwnPropertyDescriptor.f;
	  for (var i = 0; i < keys.length; i++) {
	    var key = keys[i];
	    if (!has(target, key)) defineProperty(target, key, getOwnPropertyDescriptor(source, key));
	  }
	};

	var replacement = /#|\.prototype\./;

	var isForced = function (feature, detection) {
	  var value = data[normalize(feature)];
	  return value == POLYFILL ? true
	    : value == NATIVE ? false
	    : typeof detection == 'function' ? fails(detection)
	    : !!detection;
	};

	var normalize = isForced.normalize = function (string) {
	  return String(string).replace(replacement, '.').toLowerCase();
	};

	var data = isForced.data = {};
	var NATIVE = isForced.NATIVE = 'N';
	var POLYFILL = isForced.POLYFILL = 'P';

	var isForced_1 = isForced;

	var getOwnPropertyDescriptor$1 = objectGetOwnPropertyDescriptor.f;






	/*
	  options.target      - name of the target object
	  options.global      - target is the global object
	  options.stat        - export as static methods of target
	  options.proto       - export as prototype methods of target
	  options.real        - real prototype method for the `pure` version
	  options.forced      - export even if the native feature is available
	  options.bind        - bind methods to the target, required for the `pure` version
	  options.wrap        - wrap constructors to preventing global pollution, required for the `pure` version
	  options.unsafe      - use the simple assignment of property instead of delete + defineProperty
	  options.sham        - add a flag to not completely full polyfills
	  options.enumerable  - export as enumerable property
	  options.noTargetGet - prevent calling a getter on target
	*/
	var _export = function (options, source) {
	  var TARGET = options.target;
	  var GLOBAL = options.global;
	  var STATIC = options.stat;
	  var FORCED, target, key, targetProperty, sourceProperty, descriptor;
	  if (GLOBAL) {
	    target = global_1;
	  } else if (STATIC) {
	    target = global_1[TARGET] || setGlobal(TARGET, {});
	  } else {
	    target = (global_1[TARGET] || {}).prototype;
	  }
	  if (target) for (key in source) {
	    sourceProperty = source[key];
	    if (options.noTargetGet) {
	      descriptor = getOwnPropertyDescriptor$1(target, key);
	      targetProperty = descriptor && descriptor.value;
	    } else targetProperty = target[key];
	    FORCED = isForced_1(GLOBAL ? key : TARGET + (STATIC ? '.' : '#') + key, options.forced);
	    // contained in target
	    if (!FORCED && targetProperty !== undefined) {
	      if (typeof sourceProperty === typeof targetProperty) continue;
	      copyConstructorProperties(sourceProperty, targetProperty);
	    }
	    // add a flag to not completely full polyfills
	    if (options.sham || (targetProperty && targetProperty.sham)) {
	      hide(sourceProperty, 'sham', true);
	    }
	    // extend global
	    redefine(target, key, sourceProperty, options);
	  }
	};

	var nativeSymbol = !!Object.getOwnPropertySymbols && !fails(function () {
	  // Chrome 38 Symbol has incorrect toString conversion
	  // eslint-disable-next-line no-undef
	  return !String(Symbol());
	});

	// `IsArray` abstract operation
	// https://tc39.github.io/ecma262/#sec-isarray
	var isArray = Array.isArray || function isArray(arg) {
	  return classofRaw(arg) == 'Array';
	};

	// `ToObject` abstract operation
	// https://tc39.github.io/ecma262/#sec-toobject
	var toObject = function (argument) {
	  return Object(requireObjectCoercible(argument));
	};

	// `Object.keys` method
	// https://tc39.github.io/ecma262/#sec-object.keys
	var objectKeys = Object.keys || function keys(O) {
	  return objectKeysInternal(O, enumBugKeys);
	};

	// `Object.defineProperties` method
	// https://tc39.github.io/ecma262/#sec-object.defineproperties
	var objectDefineProperties = descriptors ? Object.defineProperties : function defineProperties(O, Properties) {
	  anObject(O);
	  var keys = objectKeys(Properties);
	  var length = keys.length;
	  var index = 0;
	  var key;
	  while (length > index) objectDefineProperty.f(O, key = keys[index++], Properties[key]);
	  return O;
	};

	var html = getBuiltIn('document', 'documentElement');

	var IE_PROTO = sharedKey('IE_PROTO');

	var PROTOTYPE = 'prototype';
	var Empty = function () { /* empty */ };

	// Create object with fake `null` prototype: use iframe Object with cleared prototype
	var createDict = function () {
	  // Thrash, waste and sodomy: IE GC bug
	  var iframe = documentCreateElement('iframe');
	  var length = enumBugKeys.length;
	  var lt = '<';
	  var script = 'script';
	  var gt = '>';
	  var js = 'java' + script + ':';
	  var iframeDocument;
	  iframe.style.display = 'none';
	  html.appendChild(iframe);
	  iframe.src = String(js);
	  iframeDocument = iframe.contentWindow.document;
	  iframeDocument.open();
	  iframeDocument.write(lt + script + gt + 'document.F=Object' + lt + '/' + script + gt);
	  iframeDocument.close();
	  createDict = iframeDocument.F;
	  while (length--) delete createDict[PROTOTYPE][enumBugKeys[length]];
	  return createDict();
	};

	// `Object.create` method
	// https://tc39.github.io/ecma262/#sec-object.create
	var objectCreate = Object.create || function create(O, Properties) {
	  var result;
	  if (O !== null) {
	    Empty[PROTOTYPE] = anObject(O);
	    result = new Empty();
	    Empty[PROTOTYPE] = null;
	    // add "__proto__" for Object.getPrototypeOf polyfill
	    result[IE_PROTO] = O;
	  } else result = createDict();
	  return Properties === undefined ? result : objectDefineProperties(result, Properties);
	};

	hiddenKeys[IE_PROTO] = true;

	var nativeGetOwnPropertyNames = objectGetOwnPropertyNames.f;

	var toString$1 = {}.toString;

	var windowNames = typeof window == 'object' && window && Object.getOwnPropertyNames
	  ? Object.getOwnPropertyNames(window) : [];

	var getWindowNames = function (it) {
	  try {
	    return nativeGetOwnPropertyNames(it);
	  } catch (error) {
	    return windowNames.slice();
	  }
	};

	// fallback for IE11 buggy Object.getOwnPropertyNames with iframe and window
	var f$5 = function getOwnPropertyNames(it) {
	  return windowNames && toString$1.call(it) == '[object Window]'
	    ? getWindowNames(it)
	    : nativeGetOwnPropertyNames(toIndexedObject(it));
	};

	var objectGetOwnPropertyNamesExternal = {
		f: f$5
	};

	var Symbol$1 = global_1.Symbol;
	var store$1 = shared('wks');

	var wellKnownSymbol = function (name) {
	  return store$1[name] || (store$1[name] = nativeSymbol && Symbol$1[name]
	    || (nativeSymbol ? Symbol$1 : uid)('Symbol.' + name));
	};

	var f$6 = wellKnownSymbol;

	var wrappedWellKnownSymbol = {
		f: f$6
	};

	var defineProperty = objectDefineProperty.f;

	var defineWellKnownSymbol = function (NAME) {
	  var Symbol = path.Symbol || (path.Symbol = {});
	  if (!has(Symbol, NAME)) defineProperty(Symbol, NAME, {
	    value: wrappedWellKnownSymbol.f(NAME)
	  });
	};

	var defineProperty$1 = objectDefineProperty.f;



	var TO_STRING_TAG = wellKnownSymbol('toStringTag');

	var setToStringTag = function (it, TAG, STATIC) {
	  if (it && !has(it = STATIC ? it : it.prototype, TO_STRING_TAG)) {
	    defineProperty$1(it, TO_STRING_TAG, { configurable: true, value: TAG });
	  }
	};

	var aFunction$1 = function (it) {
	  if (typeof it != 'function') {
	    throw TypeError(String(it) + ' is not a function');
	  } return it;
	};

	// optional / simple context binding
	var bindContext = function (fn, that, length) {
	  aFunction$1(fn);
	  if (that === undefined) return fn;
	  switch (length) {
	    case 0: return function () {
	      return fn.call(that);
	    };
	    case 1: return function (a) {
	      return fn.call(that, a);
	    };
	    case 2: return function (a, b) {
	      return fn.call(that, a, b);
	    };
	    case 3: return function (a, b, c) {
	      return fn.call(that, a, b, c);
	    };
	  }
	  return function (/* ...args */) {
	    return fn.apply(that, arguments);
	  };
	};

	var SPECIES = wellKnownSymbol('species');

	// `ArraySpeciesCreate` abstract operation
	// https://tc39.github.io/ecma262/#sec-arrayspeciescreate
	var arraySpeciesCreate = function (originalArray, length) {
	  var C;
	  if (isArray(originalArray)) {
	    C = originalArray.constructor;
	    // cross-realm fallback
	    if (typeof C == 'function' && (C === Array || isArray(C.prototype))) C = undefined;
	    else if (isObject(C)) {
	      C = C[SPECIES];
	      if (C === null) C = undefined;
	    }
	  } return new (C === undefined ? Array : C)(length === 0 ? 0 : length);
	};

	var push = [].push;

	// `Array.prototype.{ forEach, map, filter, some, every, find, findIndex }` methods implementation
	var createMethod$1 = function (TYPE) {
	  var IS_MAP = TYPE == 1;
	  var IS_FILTER = TYPE == 2;
	  var IS_SOME = TYPE == 3;
	  var IS_EVERY = TYPE == 4;
	  var IS_FIND_INDEX = TYPE == 6;
	  var NO_HOLES = TYPE == 5 || IS_FIND_INDEX;
	  return function ($this, callbackfn, that, specificCreate) {
	    var O = toObject($this);
	    var self = indexedObject(O);
	    var boundFunction = bindContext(callbackfn, that, 3);
	    var length = toLength(self.length);
	    var index = 0;
	    var create = specificCreate || arraySpeciesCreate;
	    var target = IS_MAP ? create($this, length) : IS_FILTER ? create($this, 0) : undefined;
	    var value, result;
	    for (;length > index; index++) if (NO_HOLES || index in self) {
	      value = self[index];
	      result = boundFunction(value, index, O);
	      if (TYPE) {
	        if (IS_MAP) target[index] = result; // map
	        else if (result) switch (TYPE) {
	          case 3: return true;              // some
	          case 5: return value;             // find
	          case 6: return index;             // findIndex
	          case 2: push.call(target, value); // filter
	        } else if (IS_EVERY) return false;  // every
	      }
	    }
	    return IS_FIND_INDEX ? -1 : IS_SOME || IS_EVERY ? IS_EVERY : target;
	  };
	};

	var arrayIteration = {
	  // `Array.prototype.forEach` method
	  // https://tc39.github.io/ecma262/#sec-array.prototype.foreach
	  forEach: createMethod$1(0),
	  // `Array.prototype.map` method
	  // https://tc39.github.io/ecma262/#sec-array.prototype.map
	  map: createMethod$1(1),
	  // `Array.prototype.filter` method
	  // https://tc39.github.io/ecma262/#sec-array.prototype.filter
	  filter: createMethod$1(2),
	  // `Array.prototype.some` method
	  // https://tc39.github.io/ecma262/#sec-array.prototype.some
	  some: createMethod$1(3),
	  // `Array.prototype.every` method
	  // https://tc39.github.io/ecma262/#sec-array.prototype.every
	  every: createMethod$1(4),
	  // `Array.prototype.find` method
	  // https://tc39.github.io/ecma262/#sec-array.prototype.find
	  find: createMethod$1(5),
	  // `Array.prototype.findIndex` method
	  // https://tc39.github.io/ecma262/#sec-array.prototype.findIndex
	  findIndex: createMethod$1(6)
	};

	var $forEach = arrayIteration.forEach;

	var HIDDEN = sharedKey('hidden');
	var SYMBOL = 'Symbol';
	var PROTOTYPE$1 = 'prototype';
	var TO_PRIMITIVE = wellKnownSymbol('toPrimitive');
	var setInternalState = internalState.set;
	var getInternalState = internalState.getterFor(SYMBOL);
	var ObjectPrototype = Object[PROTOTYPE$1];
	var $Symbol = global_1.Symbol;
	var JSON$1 = global_1.JSON;
	var nativeJSONStringify = JSON$1 && JSON$1.stringify;
	var nativeGetOwnPropertyDescriptor$1 = objectGetOwnPropertyDescriptor.f;
	var nativeDefineProperty$1 = objectDefineProperty.f;
	var nativeGetOwnPropertyNames$1 = objectGetOwnPropertyNamesExternal.f;
	var nativePropertyIsEnumerable$1 = objectPropertyIsEnumerable.f;
	var AllSymbols = shared('symbols');
	var ObjectPrototypeSymbols = shared('op-symbols');
	var StringToSymbolRegistry = shared('string-to-symbol-registry');
	var SymbolToStringRegistry = shared('symbol-to-string-registry');
	var WellKnownSymbolsStore = shared('wks');
	var QObject = global_1.QObject;
	// Don't use setters in Qt Script, https://github.com/zloirock/core-js/issues/173
	var USE_SETTER = !QObject || !QObject[PROTOTYPE$1] || !QObject[PROTOTYPE$1].findChild;

	// fallback for old Android, https://code.google.com/p/v8/issues/detail?id=687
	var setSymbolDescriptor = descriptors && fails(function () {
	  return objectCreate(nativeDefineProperty$1({}, 'a', {
	    get: function () { return nativeDefineProperty$1(this, 'a', { value: 7 }).a; }
	  })).a != 7;
	}) ? function (O, P, Attributes) {
	  var ObjectPrototypeDescriptor = nativeGetOwnPropertyDescriptor$1(ObjectPrototype, P);
	  if (ObjectPrototypeDescriptor) delete ObjectPrototype[P];
	  nativeDefineProperty$1(O, P, Attributes);
	  if (ObjectPrototypeDescriptor && O !== ObjectPrototype) {
	    nativeDefineProperty$1(ObjectPrototype, P, ObjectPrototypeDescriptor);
	  }
	} : nativeDefineProperty$1;

	var wrap = function (tag, description) {
	  var symbol = AllSymbols[tag] = objectCreate($Symbol[PROTOTYPE$1]);
	  setInternalState(symbol, {
	    type: SYMBOL,
	    tag: tag,
	    description: description
	  });
	  if (!descriptors) symbol.description = description;
	  return symbol;
	};

	var isSymbol = nativeSymbol && typeof $Symbol.iterator == 'symbol' ? function (it) {
	  return typeof it == 'symbol';
	} : function (it) {
	  return Object(it) instanceof $Symbol;
	};

	var $defineProperty = function defineProperty(O, P, Attributes) {
	  if (O === ObjectPrototype) $defineProperty(ObjectPrototypeSymbols, P, Attributes);
	  anObject(O);
	  var key = toPrimitive(P, true);
	  anObject(Attributes);
	  if (has(AllSymbols, key)) {
	    if (!Attributes.enumerable) {
	      if (!has(O, HIDDEN)) nativeDefineProperty$1(O, HIDDEN, createPropertyDescriptor(1, {}));
	      O[HIDDEN][key] = true;
	    } else {
	      if (has(O, HIDDEN) && O[HIDDEN][key]) O[HIDDEN][key] = false;
	      Attributes = objectCreate(Attributes, { enumerable: createPropertyDescriptor(0, false) });
	    } return setSymbolDescriptor(O, key, Attributes);
	  } return nativeDefineProperty$1(O, key, Attributes);
	};

	var $defineProperties = function defineProperties(O, Properties) {
	  anObject(O);
	  var properties = toIndexedObject(Properties);
	  var keys = objectKeys(properties).concat($getOwnPropertySymbols(properties));
	  $forEach(keys, function (key) {
	    if (!descriptors || $propertyIsEnumerable.call(properties, key)) $defineProperty(O, key, properties[key]);
	  });
	  return O;
	};

	var $create = function create(O, Properties) {
	  return Properties === undefined ? objectCreate(O) : $defineProperties(objectCreate(O), Properties);
	};

	var $propertyIsEnumerable = function propertyIsEnumerable(V) {
	  var P = toPrimitive(V, true);
	  var enumerable = nativePropertyIsEnumerable$1.call(this, P);
	  if (this === ObjectPrototype && has(AllSymbols, P) && !has(ObjectPrototypeSymbols, P)) return false;
	  return enumerable || !has(this, P) || !has(AllSymbols, P) || has(this, HIDDEN) && this[HIDDEN][P] ? enumerable : true;
	};

	var $getOwnPropertyDescriptor = function getOwnPropertyDescriptor(O, P) {
	  var it = toIndexedObject(O);
	  var key = toPrimitive(P, true);
	  if (it === ObjectPrototype && has(AllSymbols, key) && !has(ObjectPrototypeSymbols, key)) return;
	  var descriptor = nativeGetOwnPropertyDescriptor$1(it, key);
	  if (descriptor && has(AllSymbols, key) && !(has(it, HIDDEN) && it[HIDDEN][key])) {
	    descriptor.enumerable = true;
	  }
	  return descriptor;
	};

	var $getOwnPropertyNames = function getOwnPropertyNames(O) {
	  var names = nativeGetOwnPropertyNames$1(toIndexedObject(O));
	  var result = [];
	  $forEach(names, function (key) {
	    if (!has(AllSymbols, key) && !has(hiddenKeys, key)) result.push(key);
	  });
	  return result;
	};

	var $getOwnPropertySymbols = function getOwnPropertySymbols(O) {
	  var IS_OBJECT_PROTOTYPE = O === ObjectPrototype;
	  var names = nativeGetOwnPropertyNames$1(IS_OBJECT_PROTOTYPE ? ObjectPrototypeSymbols : toIndexedObject(O));
	  var result = [];
	  $forEach(names, function (key) {
	    if (has(AllSymbols, key) && (!IS_OBJECT_PROTOTYPE || has(ObjectPrototype, key))) {
	      result.push(AllSymbols[key]);
	    }
	  });
	  return result;
	};

	// `Symbol` constructor
	// https://tc39.github.io/ecma262/#sec-symbol-constructor
	if (!nativeSymbol) {
	  $Symbol = function Symbol() {
	    if (this instanceof $Symbol) throw TypeError('Symbol is not a constructor');
	    var description = !arguments.length || arguments[0] === undefined ? undefined : String(arguments[0]);
	    var tag = uid(description);
	    var setter = function (value) {
	      if (this === ObjectPrototype) setter.call(ObjectPrototypeSymbols, value);
	      if (has(this, HIDDEN) && has(this[HIDDEN], tag)) this[HIDDEN][tag] = false;
	      setSymbolDescriptor(this, tag, createPropertyDescriptor(1, value));
	    };
	    if (descriptors && USE_SETTER) setSymbolDescriptor(ObjectPrototype, tag, { configurable: true, set: setter });
	    return wrap(tag, description);
	  };

	  redefine($Symbol[PROTOTYPE$1], 'toString', function toString() {
	    return getInternalState(this).tag;
	  });

	  objectPropertyIsEnumerable.f = $propertyIsEnumerable;
	  objectDefineProperty.f = $defineProperty;
	  objectGetOwnPropertyDescriptor.f = $getOwnPropertyDescriptor;
	  objectGetOwnPropertyNames.f = objectGetOwnPropertyNamesExternal.f = $getOwnPropertyNames;
	  objectGetOwnPropertySymbols.f = $getOwnPropertySymbols;

	  if (descriptors) {
	    // https://github.com/tc39/proposal-Symbol-description
	    nativeDefineProperty$1($Symbol[PROTOTYPE$1], 'description', {
	      configurable: true,
	      get: function description() {
	        return getInternalState(this).description;
	      }
	    });
	    {
	      redefine(ObjectPrototype, 'propertyIsEnumerable', $propertyIsEnumerable, { unsafe: true });
	    }
	  }

	  wrappedWellKnownSymbol.f = function (name) {
	    return wrap(wellKnownSymbol(name), name);
	  };
	}

	_export({ global: true, wrap: true, forced: !nativeSymbol, sham: !nativeSymbol }, {
	  Symbol: $Symbol
	});

	$forEach(objectKeys(WellKnownSymbolsStore), function (name) {
	  defineWellKnownSymbol(name);
	});

	_export({ target: SYMBOL, stat: true, forced: !nativeSymbol }, {
	  // `Symbol.for` method
	  // https://tc39.github.io/ecma262/#sec-symbol.for
	  'for': function (key) {
	    var string = String(key);
	    if (has(StringToSymbolRegistry, string)) return StringToSymbolRegistry[string];
	    var symbol = $Symbol(string);
	    StringToSymbolRegistry[string] = symbol;
	    SymbolToStringRegistry[symbol] = string;
	    return symbol;
	  },
	  // `Symbol.keyFor` method
	  // https://tc39.github.io/ecma262/#sec-symbol.keyfor
	  keyFor: function keyFor(sym) {
	    if (!isSymbol(sym)) throw TypeError(sym + ' is not a symbol');
	    if (has(SymbolToStringRegistry, sym)) return SymbolToStringRegistry[sym];
	  },
	  useSetter: function () { USE_SETTER = true; },
	  useSimple: function () { USE_SETTER = false; }
	});

	_export({ target: 'Object', stat: true, forced: !nativeSymbol, sham: !descriptors }, {
	  // `Object.create` method
	  // https://tc39.github.io/ecma262/#sec-object.create
	  create: $create,
	  // `Object.defineProperty` method
	  // https://tc39.github.io/ecma262/#sec-object.defineproperty
	  defineProperty: $defineProperty,
	  // `Object.defineProperties` method
	  // https://tc39.github.io/ecma262/#sec-object.defineproperties
	  defineProperties: $defineProperties,
	  // `Object.getOwnPropertyDescriptor` method
	  // https://tc39.github.io/ecma262/#sec-object.getownpropertydescriptors
	  getOwnPropertyDescriptor: $getOwnPropertyDescriptor
	});

	_export({ target: 'Object', stat: true, forced: !nativeSymbol }, {
	  // `Object.getOwnPropertyNames` method
	  // https://tc39.github.io/ecma262/#sec-object.getownpropertynames
	  getOwnPropertyNames: $getOwnPropertyNames,
	  // `Object.getOwnPropertySymbols` method
	  // https://tc39.github.io/ecma262/#sec-object.getownpropertysymbols
	  getOwnPropertySymbols: $getOwnPropertySymbols
	});

	// Chrome 38 and 39 `Object.getOwnPropertySymbols` fails on primitives
	// https://bugs.chromium.org/p/v8/issues/detail?id=3443
	_export({ target: 'Object', stat: true, forced: fails(function () { objectGetOwnPropertySymbols.f(1); }) }, {
	  getOwnPropertySymbols: function getOwnPropertySymbols(it) {
	    return objectGetOwnPropertySymbols.f(toObject(it));
	  }
	});

	// `JSON.stringify` method behavior with symbols
	// https://tc39.github.io/ecma262/#sec-json.stringify
	JSON$1 && _export({ target: 'JSON', stat: true, forced: !nativeSymbol || fails(function () {
	  var symbol = $Symbol();
	  // MS Edge converts symbol values to JSON as {}
	  return nativeJSONStringify([symbol]) != '[null]'
	    // WebKit converts symbol values to JSON as null
	    || nativeJSONStringify({ a: symbol }) != '{}'
	    // V8 throws on boxed symbols
	    || nativeJSONStringify(Object(symbol)) != '{}';
	}) }, {
	  stringify: function stringify(it) {
	    var args = [it];
	    var index = 1;
	    var replacer, $replacer;
	    while (arguments.length > index) args.push(arguments[index++]);
	    $replacer = replacer = args[1];
	    if (!isObject(replacer) && it === undefined || isSymbol(it)) return; // IE8 returns string on undefined
	    if (!isArray(replacer)) replacer = function (key, value) {
	      if (typeof $replacer == 'function') value = $replacer.call(this, key, value);
	      if (!isSymbol(value)) return value;
	    };
	    args[1] = replacer;
	    return nativeJSONStringify.apply(JSON$1, args);
	  }
	});

	// `Symbol.prototype[@@toPrimitive]` method
	// https://tc39.github.io/ecma262/#sec-symbol.prototype-@@toprimitive
	if (!$Symbol[PROTOTYPE$1][TO_PRIMITIVE]) hide($Symbol[PROTOTYPE$1], TO_PRIMITIVE, $Symbol[PROTOTYPE$1].valueOf);
	// `Symbol.prototype[@@toStringTag]` property
	// https://tc39.github.io/ecma262/#sec-symbol.prototype-@@tostringtag
	setToStringTag($Symbol, SYMBOL);

	hiddenKeys[HIDDEN] = true;

	var defineProperty$2 = objectDefineProperty.f;


	var NativeSymbol = global_1.Symbol;

	if (descriptors && typeof NativeSymbol == 'function' && (!('description' in NativeSymbol.prototype) ||
	  // Safari 12 bug
	  NativeSymbol().description !== undefined
	)) {
	  var EmptyStringDescriptionStore = {};
	  // wrap Symbol constructor for correct work with undefined description
	  var SymbolWrapper = function Symbol() {
	    var description = arguments.length < 1 || arguments[0] === undefined ? undefined : String(arguments[0]);
	    var result = this instanceof SymbolWrapper
	      ? new NativeSymbol(description)
	      // in Edge 13, String(Symbol(undefined)) === 'Symbol(undefined)'
	      : description === undefined ? NativeSymbol() : NativeSymbol(description);
	    if (description === '') EmptyStringDescriptionStore[result] = true;
	    return result;
	  };
	  copyConstructorProperties(SymbolWrapper, NativeSymbol);
	  var symbolPrototype = SymbolWrapper.prototype = NativeSymbol.prototype;
	  symbolPrototype.constructor = SymbolWrapper;

	  var symbolToString = symbolPrototype.toString;
	  var native = String(NativeSymbol('test')) == 'Symbol(test)';
	  var regexp = /^Symbol\((.*)\)[^)]+$/;
	  defineProperty$2(symbolPrototype, 'description', {
	    configurable: true,
	    get: function description() {
	      var symbol = isObject(this) ? this.valueOf() : this;
	      var string = symbolToString.call(symbol);
	      if (has(EmptyStringDescriptionStore, symbol)) return '';
	      var desc = native ? string.slice(7, -1) : string.replace(regexp, '$1');
	      return desc === '' ? undefined : desc;
	    }
	  });

	  _export({ global: true, forced: true }, {
	    Symbol: SymbolWrapper
	  });
	}

	// `Symbol.asyncIterator` well-known symbol
	// https://tc39.github.io/ecma262/#sec-symbol.asynciterator
	defineWellKnownSymbol('asyncIterator');

	// `Symbol.hasInstance` well-known symbol
	// https://tc39.github.io/ecma262/#sec-symbol.hasinstance
	defineWellKnownSymbol('hasInstance');

	// `Symbol.isConcatSpreadable` well-known symbol
	// https://tc39.github.io/ecma262/#sec-symbol.isconcatspreadable
	defineWellKnownSymbol('isConcatSpreadable');

	// `Symbol.iterator` well-known symbol
	// https://tc39.github.io/ecma262/#sec-symbol.iterator
	defineWellKnownSymbol('iterator');

	// `Symbol.match` well-known symbol
	// https://tc39.github.io/ecma262/#sec-symbol.match
	defineWellKnownSymbol('match');

	// `Symbol.replace` well-known symbol
	// https://tc39.github.io/ecma262/#sec-symbol.replace
	defineWellKnownSymbol('replace');

	// `Symbol.search` well-known symbol
	// https://tc39.github.io/ecma262/#sec-symbol.search
	defineWellKnownSymbol('search');

	// `Symbol.species` well-known symbol
	// https://tc39.github.io/ecma262/#sec-symbol.species
	defineWellKnownSymbol('species');

	// `Symbol.split` well-known symbol
	// https://tc39.github.io/ecma262/#sec-symbol.split
	defineWellKnownSymbol('split');

	// `Symbol.toPrimitive` well-known symbol
	// https://tc39.github.io/ecma262/#sec-symbol.toprimitive
	defineWellKnownSymbol('toPrimitive');

	// `Symbol.toStringTag` well-known symbol
	// https://tc39.github.io/ecma262/#sec-symbol.tostringtag
	defineWellKnownSymbol('toStringTag');

	// `Symbol.unscopables` well-known symbol
	// https://tc39.github.io/ecma262/#sec-symbol.unscopables
	defineWellKnownSymbol('unscopables');

	var createProperty = function (object, key, value) {
	  var propertyKey = toPrimitive(key);
	  if (propertyKey in object) objectDefineProperty.f(object, propertyKey, createPropertyDescriptor(0, value));
	  else object[propertyKey] = value;
	};

	var SPECIES$1 = wellKnownSymbol('species');

	var arrayMethodHasSpeciesSupport = function (METHOD_NAME) {
	  return !fails(function () {
	    var array = [];
	    var constructor = array.constructor = {};
	    constructor[SPECIES$1] = function () {
	      return { foo: 1 };
	    };
	    return array[METHOD_NAME](Boolean).foo !== 1;
	  });
	};

	var IS_CONCAT_SPREADABLE = wellKnownSymbol('isConcatSpreadable');
	var MAX_SAFE_INTEGER = 0x1FFFFFFFFFFFFF;
	var MAXIMUM_ALLOWED_INDEX_EXCEEDED = 'Maximum allowed index exceeded';

	var IS_CONCAT_SPREADABLE_SUPPORT = !fails(function () {
	  var array = [];
	  array[IS_CONCAT_SPREADABLE] = false;
	  return array.concat()[0] !== array;
	});

	var SPECIES_SUPPORT = arrayMethodHasSpeciesSupport('concat');

	var isConcatSpreadable = function (O) {
	  if (!isObject(O)) return false;
	  var spreadable = O[IS_CONCAT_SPREADABLE];
	  return spreadable !== undefined ? !!spreadable : isArray(O);
	};

	var FORCED = !IS_CONCAT_SPREADABLE_SUPPORT || !SPECIES_SUPPORT;

	// `Array.prototype.concat` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.concat
	// with adding support of @@isConcatSpreadable and @@species
	_export({ target: 'Array', proto: true, forced: FORCED }, {
	  concat: function concat(arg) { // eslint-disable-line no-unused-vars
	    var O = toObject(this);
	    var A = arraySpeciesCreate(O, 0);
	    var n = 0;
	    var i, k, length, len, E;
	    for (i = -1, length = arguments.length; i < length; i++) {
	      E = i === -1 ? O : arguments[i];
	      if (isConcatSpreadable(E)) {
	        len = toLength(E.length);
	        if (n + len > MAX_SAFE_INTEGER) throw TypeError(MAXIMUM_ALLOWED_INDEX_EXCEEDED);
	        for (k = 0; k < len; k++, n++) if (k in E) createProperty(A, n, E[k]);
	      } else {
	        if (n >= MAX_SAFE_INTEGER) throw TypeError(MAXIMUM_ALLOWED_INDEX_EXCEEDED);
	        createProperty(A, n++, E);
	      }
	    }
	    A.length = n;
	    return A;
	  }
	});

	var min$2 = Math.min;

	// `Array.prototype.copyWithin` method implementation
	// https://tc39.github.io/ecma262/#sec-array.prototype.copywithin
	var arrayCopyWithin = [].copyWithin || function copyWithin(target /* = 0 */, start /* = 0, end = @length */) {
	  var O = toObject(this);
	  var len = toLength(O.length);
	  var to = toAbsoluteIndex(target, len);
	  var from = toAbsoluteIndex(start, len);
	  var end = arguments.length > 2 ? arguments[2] : undefined;
	  var count = min$2((end === undefined ? len : toAbsoluteIndex(end, len)) - from, len - to);
	  var inc = 1;
	  if (from < to && to < from + count) {
	    inc = -1;
	    from += count - 1;
	    to += count - 1;
	  }
	  while (count-- > 0) {
	    if (from in O) O[to] = O[from];
	    else delete O[to];
	    to += inc;
	    from += inc;
	  } return O;
	};

	var UNSCOPABLES = wellKnownSymbol('unscopables');
	var ArrayPrototype = Array.prototype;

	// Array.prototype[@@unscopables]
	// https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
	if (ArrayPrototype[UNSCOPABLES] == undefined) {
	  hide(ArrayPrototype, UNSCOPABLES, objectCreate(null));
	}

	// add a key to Array.prototype[@@unscopables]
	var addToUnscopables = function (key) {
	  ArrayPrototype[UNSCOPABLES][key] = true;
	};

	// `Array.prototype.copyWithin` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.copywithin
	_export({ target: 'Array', proto: true }, {
	  copyWithin: arrayCopyWithin
	});

	// https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
	addToUnscopables('copyWithin');

	var sloppyArrayMethod = function (METHOD_NAME, argument) {
	  var method = [][METHOD_NAME];
	  return !method || !fails(function () {
	    // eslint-disable-next-line no-useless-call,no-throw-literal
	    method.call(null, argument || function () { throw 1; }, 1);
	  });
	};

	var $every = arrayIteration.every;


	// `Array.prototype.every` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.every
	_export({ target: 'Array', proto: true, forced: sloppyArrayMethod('every') }, {
	  every: function every(callbackfn /* , thisArg */) {
	    return $every(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
	  }
	});

	// `Array.prototype.fill` method implementation
	// https://tc39.github.io/ecma262/#sec-array.prototype.fill
	var arrayFill = function fill(value /* , start = 0, end = @length */) {
	  var O = toObject(this);
	  var length = toLength(O.length);
	  var argumentsLength = arguments.length;
	  var index = toAbsoluteIndex(argumentsLength > 1 ? arguments[1] : undefined, length);
	  var end = argumentsLength > 2 ? arguments[2] : undefined;
	  var endPos = end === undefined ? length : toAbsoluteIndex(end, length);
	  while (endPos > index) O[index++] = value;
	  return O;
	};

	// `Array.prototype.fill` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.fill
	_export({ target: 'Array', proto: true }, {
	  fill: arrayFill
	});

	// https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
	addToUnscopables('fill');

	var $filter = arrayIteration.filter;


	// `Array.prototype.filter` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.filter
	// with adding support of @@species
	_export({ target: 'Array', proto: true, forced: !arrayMethodHasSpeciesSupport('filter') }, {
	  filter: function filter(callbackfn /* , thisArg */) {
	    return $filter(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
	  }
	});

	var $find = arrayIteration.find;


	var FIND = 'find';
	var SKIPS_HOLES = true;

	// Shouldn't skip holes
	if (FIND in []) Array(1)[FIND](function () { SKIPS_HOLES = false; });

	// `Array.prototype.find` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.find
	_export({ target: 'Array', proto: true, forced: SKIPS_HOLES }, {
	  find: function find(callbackfn /* , that = undefined */) {
	    return $find(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
	  }
	});

	// https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
	addToUnscopables(FIND);

	var $findIndex = arrayIteration.findIndex;


	var FIND_INDEX = 'findIndex';
	var SKIPS_HOLES$1 = true;

	// Shouldn't skip holes
	if (FIND_INDEX in []) Array(1)[FIND_INDEX](function () { SKIPS_HOLES$1 = false; });

	// `Array.prototype.findIndex` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.findindex
	_export({ target: 'Array', proto: true, forced: SKIPS_HOLES$1 }, {
	  findIndex: function findIndex(callbackfn /* , that = undefined */) {
	    return $findIndex(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
	  }
	});

	// https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
	addToUnscopables(FIND_INDEX);

	// `FlattenIntoArray` abstract operation
	// https://tc39.github.io/proposal-flatMap/#sec-FlattenIntoArray
	var flattenIntoArray = function (target, original, source, sourceLen, start, depth, mapper, thisArg) {
	  var targetIndex = start;
	  var sourceIndex = 0;
	  var mapFn = mapper ? bindContext(mapper, thisArg, 3) : false;
	  var element;

	  while (sourceIndex < sourceLen) {
	    if (sourceIndex in source) {
	      element = mapFn ? mapFn(source[sourceIndex], sourceIndex, original) : source[sourceIndex];

	      if (depth > 0 && isArray(element)) {
	        targetIndex = flattenIntoArray(target, original, element, toLength(element.length), targetIndex, depth - 1) - 1;
	      } else {
	        if (targetIndex >= 0x1FFFFFFFFFFFFF) throw TypeError('Exceed the acceptable array length');
	        target[targetIndex] = element;
	      }

	      targetIndex++;
	    }
	    sourceIndex++;
	  }
	  return targetIndex;
	};

	var flattenIntoArray_1 = flattenIntoArray;

	// `Array.prototype.flat` method
	// https://github.com/tc39/proposal-flatMap
	_export({ target: 'Array', proto: true }, {
	  flat: function flat(/* depthArg = 1 */) {
	    var depthArg = arguments.length ? arguments[0] : undefined;
	    var O = toObject(this);
	    var sourceLen = toLength(O.length);
	    var A = arraySpeciesCreate(O, 0);
	    A.length = flattenIntoArray_1(A, O, O, sourceLen, 0, depthArg === undefined ? 1 : toInteger(depthArg));
	    return A;
	  }
	});

	// `Array.prototype.flatMap` method
	// https://github.com/tc39/proposal-flatMap
	_export({ target: 'Array', proto: true }, {
	  flatMap: function flatMap(callbackfn /* , thisArg */) {
	    var O = toObject(this);
	    var sourceLen = toLength(O.length);
	    var A;
	    aFunction$1(callbackfn);
	    A = arraySpeciesCreate(O, 0);
	    A.length = flattenIntoArray_1(A, O, O, sourceLen, 0, 1, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
	    return A;
	  }
	});

	var $forEach$1 = arrayIteration.forEach;


	// `Array.prototype.forEach` method implementation
	// https://tc39.github.io/ecma262/#sec-array.prototype.foreach
	var arrayForEach = sloppyArrayMethod('forEach') ? function forEach(callbackfn /* , thisArg */) {
	  return $forEach$1(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
	} : [].forEach;

	// `Array.prototype.forEach` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.foreach
	_export({ target: 'Array', proto: true, forced: [].forEach != arrayForEach }, {
	  forEach: arrayForEach
	});

	// call something on iterator step with safe closing on error
	var callWithSafeIterationClosing = function (iterator, fn, value, ENTRIES) {
	  try {
	    return ENTRIES ? fn(anObject(value)[0], value[1]) : fn(value);
	  // 7.4.6 IteratorClose(iterator, completion)
	  } catch (error) {
	    var returnMethod = iterator['return'];
	    if (returnMethod !== undefined) anObject(returnMethod.call(iterator));
	    throw error;
	  }
	};

	var iterators = {};

	var ITERATOR = wellKnownSymbol('iterator');
	var ArrayPrototype$1 = Array.prototype;

	// check on default Array iterator
	var isArrayIteratorMethod = function (it) {
	  return it !== undefined && (iterators.Array === it || ArrayPrototype$1[ITERATOR] === it);
	};

	var TO_STRING_TAG$1 = wellKnownSymbol('toStringTag');
	// ES3 wrong here
	var CORRECT_ARGUMENTS = classofRaw(function () { return arguments; }()) == 'Arguments';

	// fallback for IE11 Script Access Denied error
	var tryGet = function (it, key) {
	  try {
	    return it[key];
	  } catch (error) { /* empty */ }
	};

	// getting tag from ES6+ `Object.prototype.toString`
	var classof = function (it) {
	  var O, tag, result;
	  return it === undefined ? 'Undefined' : it === null ? 'Null'
	    // @@toStringTag case
	    : typeof (tag = tryGet(O = Object(it), TO_STRING_TAG$1)) == 'string' ? tag
	    // builtinTag case
	    : CORRECT_ARGUMENTS ? classofRaw(O)
	    // ES3 arguments fallback
	    : (result = classofRaw(O)) == 'Object' && typeof O.callee == 'function' ? 'Arguments' : result;
	};

	var ITERATOR$1 = wellKnownSymbol('iterator');

	var getIteratorMethod = function (it) {
	  if (it != undefined) return it[ITERATOR$1]
	    || it['@@iterator']
	    || iterators[classof(it)];
	};

	// `Array.from` method implementation
	// https://tc39.github.io/ecma262/#sec-array.from
	var arrayFrom = function from(arrayLike /* , mapfn = undefined, thisArg = undefined */) {
	  var O = toObject(arrayLike);
	  var C = typeof this == 'function' ? this : Array;
	  var argumentsLength = arguments.length;
	  var mapfn = argumentsLength > 1 ? arguments[1] : undefined;
	  var mapping = mapfn !== undefined;
	  var index = 0;
	  var iteratorMethod = getIteratorMethod(O);
	  var length, result, step, iterator;
	  if (mapping) mapfn = bindContext(mapfn, argumentsLength > 2 ? arguments[2] : undefined, 2);
	  // if the target is not iterable or it's an array with the default iterator - use a simple case
	  if (iteratorMethod != undefined && !(C == Array && isArrayIteratorMethod(iteratorMethod))) {
	    iterator = iteratorMethod.call(O);
	    result = new C();
	    for (;!(step = iterator.next()).done; index++) {
	      createProperty(result, index, mapping
	        ? callWithSafeIterationClosing(iterator, mapfn, [step.value, index], true)
	        : step.value
	      );
	    }
	  } else {
	    length = toLength(O.length);
	    result = new C(length);
	    for (;length > index; index++) {
	      createProperty(result, index, mapping ? mapfn(O[index], index) : O[index]);
	    }
	  }
	  result.length = index;
	  return result;
	};

	var ITERATOR$2 = wellKnownSymbol('iterator');
	var SAFE_CLOSING = false;

	try {
	  var called = 0;
	  var iteratorWithReturn = {
	    next: function () {
	      return { done: !!called++ };
	    },
	    'return': function () {
	      SAFE_CLOSING = true;
	    }
	  };
	  iteratorWithReturn[ITERATOR$2] = function () {
	    return this;
	  };
	} catch (error) { /* empty */ }

	var checkCorrectnessOfIteration = function (exec, SKIP_CLOSING) {
	  if (!SKIP_CLOSING && !SAFE_CLOSING) return false;
	  var ITERATION_SUPPORT = false;
	  try {
	    var object = {};
	    object[ITERATOR$2] = function () {
	      return {
	        next: function () {
	          return { done: ITERATION_SUPPORT = true };
	        }
	      };
	    };
	    exec(object);
	  } catch (error) { /* empty */ }
	  return ITERATION_SUPPORT;
	};

	var INCORRECT_ITERATION = !checkCorrectnessOfIteration(function (iterable) {
	});

	// `Array.from` method
	// https://tc39.github.io/ecma262/#sec-array.from
	_export({ target: 'Array', stat: true, forced: INCORRECT_ITERATION }, {
	  from: arrayFrom
	});

	var $includes = arrayIncludes.includes;


	// `Array.prototype.includes` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.includes
	_export({ target: 'Array', proto: true }, {
	  includes: function includes(el /* , fromIndex = 0 */) {
	    return $includes(this, el, arguments.length > 1 ? arguments[1] : undefined);
	  }
	});

	// https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
	addToUnscopables('includes');

	var $indexOf = arrayIncludes.indexOf;


	var nativeIndexOf = [].indexOf;

	var NEGATIVE_ZERO = !!nativeIndexOf && 1 / [1].indexOf(1, -0) < 0;
	var SLOPPY_METHOD = sloppyArrayMethod('indexOf');

	// `Array.prototype.indexOf` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.indexof
	_export({ target: 'Array', proto: true, forced: NEGATIVE_ZERO || SLOPPY_METHOD }, {
	  indexOf: function indexOf(searchElement /* , fromIndex = 0 */) {
	    return NEGATIVE_ZERO
	      // convert -0 to +0
	      ? nativeIndexOf.apply(this, arguments) || 0
	      : $indexOf(this, searchElement, arguments.length > 1 ? arguments[1] : undefined);
	  }
	});

	var correctPrototypeGetter = !fails(function () {
	  function F() { /* empty */ }
	  F.prototype.constructor = null;
	  return Object.getPrototypeOf(new F()) !== F.prototype;
	});

	var IE_PROTO$1 = sharedKey('IE_PROTO');
	var ObjectPrototype$1 = Object.prototype;

	// `Object.getPrototypeOf` method
	// https://tc39.github.io/ecma262/#sec-object.getprototypeof
	var objectGetPrototypeOf = correctPrototypeGetter ? Object.getPrototypeOf : function (O) {
	  O = toObject(O);
	  if (has(O, IE_PROTO$1)) return O[IE_PROTO$1];
	  if (typeof O.constructor == 'function' && O instanceof O.constructor) {
	    return O.constructor.prototype;
	  } return O instanceof Object ? ObjectPrototype$1 : null;
	};

	var ITERATOR$3 = wellKnownSymbol('iterator');
	var BUGGY_SAFARI_ITERATORS = false;

	var returnThis = function () { return this; };

	// `%IteratorPrototype%` object
	// https://tc39.github.io/ecma262/#sec-%iteratorprototype%-object
	var IteratorPrototype, PrototypeOfArrayIteratorPrototype, arrayIterator;

	if ([].keys) {
	  arrayIterator = [].keys();
	  // Safari 8 has buggy iterators w/o `next`
	  if (!('next' in arrayIterator)) BUGGY_SAFARI_ITERATORS = true;
	  else {
	    PrototypeOfArrayIteratorPrototype = objectGetPrototypeOf(objectGetPrototypeOf(arrayIterator));
	    if (PrototypeOfArrayIteratorPrototype !== Object.prototype) IteratorPrototype = PrototypeOfArrayIteratorPrototype;
	  }
	}

	if (IteratorPrototype == undefined) IteratorPrototype = {};

	// 25.1.2.1.1 %IteratorPrototype%[@@iterator]()
	if (!has(IteratorPrototype, ITERATOR$3)) hide(IteratorPrototype, ITERATOR$3, returnThis);

	var iteratorsCore = {
	  IteratorPrototype: IteratorPrototype,
	  BUGGY_SAFARI_ITERATORS: BUGGY_SAFARI_ITERATORS
	};

	var IteratorPrototype$1 = iteratorsCore.IteratorPrototype;





	var returnThis$1 = function () { return this; };

	var createIteratorConstructor = function (IteratorConstructor, NAME, next) {
	  var TO_STRING_TAG = NAME + ' Iterator';
	  IteratorConstructor.prototype = objectCreate(IteratorPrototype$1, { next: createPropertyDescriptor(1, next) });
	  setToStringTag(IteratorConstructor, TO_STRING_TAG, false, true);
	  iterators[TO_STRING_TAG] = returnThis$1;
	  return IteratorConstructor;
	};

	var aPossiblePrototype = function (it) {
	  if (!isObject(it) && it !== null) {
	    throw TypeError("Can't set " + String(it) + ' as a prototype');
	  } return it;
	};

	// `Object.setPrototypeOf` method
	// https://tc39.github.io/ecma262/#sec-object.setprototypeof
	// Works with __proto__ only. Old v8 can't work with null proto objects.
	/* eslint-disable no-proto */
	var objectSetPrototypeOf = Object.setPrototypeOf || ('__proto__' in {} ? function () {
	  var CORRECT_SETTER = false;
	  var test = {};
	  var setter;
	  try {
	    setter = Object.getOwnPropertyDescriptor(Object.prototype, '__proto__').set;
	    setter.call(test, []);
	    CORRECT_SETTER = test instanceof Array;
	  } catch (error) { /* empty */ }
	  return function setPrototypeOf(O, proto) {
	    anObject(O);
	    aPossiblePrototype(proto);
	    if (CORRECT_SETTER) setter.call(O, proto);
	    else O.__proto__ = proto;
	    return O;
	  };
	}() : undefined);

	var IteratorPrototype$2 = iteratorsCore.IteratorPrototype;
	var BUGGY_SAFARI_ITERATORS$1 = iteratorsCore.BUGGY_SAFARI_ITERATORS;
	var ITERATOR$4 = wellKnownSymbol('iterator');
	var KEYS = 'keys';
	var VALUES = 'values';
	var ENTRIES = 'entries';

	var returnThis$2 = function () { return this; };

	var defineIterator = function (Iterable, NAME, IteratorConstructor, next, DEFAULT, IS_SET, FORCED) {
	  createIteratorConstructor(IteratorConstructor, NAME, next);

	  var getIterationMethod = function (KIND) {
	    if (KIND === DEFAULT && defaultIterator) return defaultIterator;
	    if (!BUGGY_SAFARI_ITERATORS$1 && KIND in IterablePrototype) return IterablePrototype[KIND];
	    switch (KIND) {
	      case KEYS: return function keys() { return new IteratorConstructor(this, KIND); };
	      case VALUES: return function values() { return new IteratorConstructor(this, KIND); };
	      case ENTRIES: return function entries() { return new IteratorConstructor(this, KIND); };
	    } return function () { return new IteratorConstructor(this); };
	  };

	  var TO_STRING_TAG = NAME + ' Iterator';
	  var INCORRECT_VALUES_NAME = false;
	  var IterablePrototype = Iterable.prototype;
	  var nativeIterator = IterablePrototype[ITERATOR$4]
	    || IterablePrototype['@@iterator']
	    || DEFAULT && IterablePrototype[DEFAULT];
	  var defaultIterator = !BUGGY_SAFARI_ITERATORS$1 && nativeIterator || getIterationMethod(DEFAULT);
	  var anyNativeIterator = NAME == 'Array' ? IterablePrototype.entries || nativeIterator : nativeIterator;
	  var CurrentIteratorPrototype, methods, KEY;

	  // fix native
	  if (anyNativeIterator) {
	    CurrentIteratorPrototype = objectGetPrototypeOf(anyNativeIterator.call(new Iterable()));
	    if (IteratorPrototype$2 !== Object.prototype && CurrentIteratorPrototype.next) {
	      if (objectGetPrototypeOf(CurrentIteratorPrototype) !== IteratorPrototype$2) {
	        if (objectSetPrototypeOf) {
	          objectSetPrototypeOf(CurrentIteratorPrototype, IteratorPrototype$2);
	        } else if (typeof CurrentIteratorPrototype[ITERATOR$4] != 'function') {
	          hide(CurrentIteratorPrototype, ITERATOR$4, returnThis$2);
	        }
	      }
	      // Set @@toStringTag to native iterators
	      setToStringTag(CurrentIteratorPrototype, TO_STRING_TAG, true, true);
	    }
	  }

	  // fix Array#{values, @@iterator}.name in V8 / FF
	  if (DEFAULT == VALUES && nativeIterator && nativeIterator.name !== VALUES) {
	    INCORRECT_VALUES_NAME = true;
	    defaultIterator = function values() { return nativeIterator.call(this); };
	  }

	  // define iterator
	  if (IterablePrototype[ITERATOR$4] !== defaultIterator) {
	    hide(IterablePrototype, ITERATOR$4, defaultIterator);
	  }
	  iterators[NAME] = defaultIterator;

	  // export additional methods
	  if (DEFAULT) {
	    methods = {
	      values: getIterationMethod(VALUES),
	      keys: IS_SET ? defaultIterator : getIterationMethod(KEYS),
	      entries: getIterationMethod(ENTRIES)
	    };
	    if (FORCED) for (KEY in methods) {
	      if (BUGGY_SAFARI_ITERATORS$1 || INCORRECT_VALUES_NAME || !(KEY in IterablePrototype)) {
	        redefine(IterablePrototype, KEY, methods[KEY]);
	      }
	    } else _export({ target: NAME, proto: true, forced: BUGGY_SAFARI_ITERATORS$1 || INCORRECT_VALUES_NAME }, methods);
	  }

	  return methods;
	};

	var ARRAY_ITERATOR = 'Array Iterator';
	var setInternalState$1 = internalState.set;
	var getInternalState$1 = internalState.getterFor(ARRAY_ITERATOR);

	// `Array.prototype.entries` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.entries
	// `Array.prototype.keys` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.keys
	// `Array.prototype.values` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.values
	// `Array.prototype[@@iterator]` method
	// https://tc39.github.io/ecma262/#sec-array.prototype-@@iterator
	// `CreateArrayIterator` internal method
	// https://tc39.github.io/ecma262/#sec-createarrayiterator
	var es_array_iterator = defineIterator(Array, 'Array', function (iterated, kind) {
	  setInternalState$1(this, {
	    type: ARRAY_ITERATOR,
	    target: toIndexedObject(iterated), // target
	    index: 0,                          // next index
	    kind: kind                         // kind
	  });
	// `%ArrayIteratorPrototype%.next` method
	// https://tc39.github.io/ecma262/#sec-%arrayiteratorprototype%.next
	}, function () {
	  var state = getInternalState$1(this);
	  var target = state.target;
	  var kind = state.kind;
	  var index = state.index++;
	  if (!target || index >= target.length) {
	    state.target = undefined;
	    return { value: undefined, done: true };
	  }
	  if (kind == 'keys') return { value: index, done: false };
	  if (kind == 'values') return { value: target[index], done: false };
	  return { value: [index, target[index]], done: false };
	}, 'values');

	// argumentsList[@@iterator] is %ArrayProto_values%
	// https://tc39.github.io/ecma262/#sec-createunmappedargumentsobject
	// https://tc39.github.io/ecma262/#sec-createmappedargumentsobject
	iterators.Arguments = iterators.Array;

	// https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables
	addToUnscopables('keys');
	addToUnscopables('values');
	addToUnscopables('entries');

	var nativeJoin = [].join;

	var ES3_STRINGS = indexedObject != Object;
	var SLOPPY_METHOD$1 = sloppyArrayMethod('join', ',');

	// `Array.prototype.join` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.join
	_export({ target: 'Array', proto: true, forced: ES3_STRINGS || SLOPPY_METHOD$1 }, {
	  join: function join(separator) {
	    return nativeJoin.call(toIndexedObject(this), separator === undefined ? ',' : separator);
	  }
	});

	var min$3 = Math.min;
	var nativeLastIndexOf = [].lastIndexOf;
	var NEGATIVE_ZERO$1 = !!nativeLastIndexOf && 1 / [1].lastIndexOf(1, -0) < 0;
	var SLOPPY_METHOD$2 = sloppyArrayMethod('lastIndexOf');

	// `Array.prototype.lastIndexOf` method implementation
	// https://tc39.github.io/ecma262/#sec-array.prototype.lastindexof
	var arrayLastIndexOf = (NEGATIVE_ZERO$1 || SLOPPY_METHOD$2) ? function lastIndexOf(searchElement /* , fromIndex = @[*-1] */) {
	  // convert -0 to +0
	  if (NEGATIVE_ZERO$1) return nativeLastIndexOf.apply(this, arguments) || 0;
	  var O = toIndexedObject(this);
	  var length = toLength(O.length);
	  var index = length - 1;
	  if (arguments.length > 1) index = min$3(index, toInteger(arguments[1]));
	  if (index < 0) index = length + index;
	  for (;index >= 0; index--) if (index in O && O[index] === searchElement) return index || 0;
	  return -1;
	} : nativeLastIndexOf;

	// `Array.prototype.lastIndexOf` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.lastindexof
	_export({ target: 'Array', proto: true, forced: arrayLastIndexOf !== [].lastIndexOf }, {
	  lastIndexOf: arrayLastIndexOf
	});

	var $map = arrayIteration.map;


	// `Array.prototype.map` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.map
	// with adding support of @@species
	_export({ target: 'Array', proto: true, forced: !arrayMethodHasSpeciesSupport('map') }, {
	  map: function map(callbackfn /* , thisArg */) {
	    return $map(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
	  }
	});

	var ISNT_GENERIC = fails(function () {
	  function F() { /* empty */ }
	  return !(Array.of.call(F) instanceof F);
	});

	// `Array.of` method
	// https://tc39.github.io/ecma262/#sec-array.of
	// WebKit Array.of isn't generic
	_export({ target: 'Array', stat: true, forced: ISNT_GENERIC }, {
	  of: function of(/* ...args */) {
	    var index = 0;
	    var argumentsLength = arguments.length;
	    var result = new (typeof this == 'function' ? this : Array)(argumentsLength);
	    while (argumentsLength > index) createProperty(result, index, arguments[index++]);
	    result.length = argumentsLength;
	    return result;
	  }
	});

	// `Array.prototype.{ reduce, reduceRight }` methods implementation
	var createMethod$2 = function (IS_RIGHT) {
	  return function (that, callbackfn, argumentsLength, memo) {
	    aFunction$1(callbackfn);
	    var O = toObject(that);
	    var self = indexedObject(O);
	    var length = toLength(O.length);
	    var index = IS_RIGHT ? length - 1 : 0;
	    var i = IS_RIGHT ? -1 : 1;
	    if (argumentsLength < 2) while (true) {
	      if (index in self) {
	        memo = self[index];
	        index += i;
	        break;
	      }
	      index += i;
	      if (IS_RIGHT ? index < 0 : length <= index) {
	        throw TypeError('Reduce of empty array with no initial value');
	      }
	    }
	    for (;IS_RIGHT ? index >= 0 : length > index; index += i) if (index in self) {
	      memo = callbackfn(memo, self[index], index, O);
	    }
	    return memo;
	  };
	};

	var arrayReduce = {
	  // `Array.prototype.reduce` method
	  // https://tc39.github.io/ecma262/#sec-array.prototype.reduce
	  left: createMethod$2(false),
	  // `Array.prototype.reduceRight` method
	  // https://tc39.github.io/ecma262/#sec-array.prototype.reduceright
	  right: createMethod$2(true)
	};

	var $reduce = arrayReduce.left;


	// `Array.prototype.reduce` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.reduce
	_export({ target: 'Array', proto: true, forced: sloppyArrayMethod('reduce') }, {
	  reduce: function reduce(callbackfn /* , initialValue */) {
	    return $reduce(this, callbackfn, arguments.length, arguments.length > 1 ? arguments[1] : undefined);
	  }
	});

	var $reduceRight = arrayReduce.right;


	// `Array.prototype.reduceRight` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.reduceright
	_export({ target: 'Array', proto: true, forced: sloppyArrayMethod('reduceRight') }, {
	  reduceRight: function reduceRight(callbackfn /* , initialValue */) {
	    return $reduceRight(this, callbackfn, arguments.length, arguments.length > 1 ? arguments[1] : undefined);
	  }
	});

	var nativeReverse = [].reverse;
	var test = [1, 2];

	// `Array.prototype.reverse` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.reverse
	// fix for Safari 12.0 bug
	// https://bugs.webkit.org/show_bug.cgi?id=188794
	_export({ target: 'Array', proto: true, forced: String(test) === String(test.reverse()) }, {
	  reverse: function reverse() {
	    if (isArray(this)) this.length = this.length;
	    return nativeReverse.call(this);
	  }
	});

	var SPECIES$2 = wellKnownSymbol('species');
	var nativeSlice = [].slice;
	var max$1 = Math.max;

	// `Array.prototype.slice` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.slice
	// fallback for not array-like ES3 strings and DOM objects
	_export({ target: 'Array', proto: true, forced: !arrayMethodHasSpeciesSupport('slice') }, {
	  slice: function slice(start, end) {
	    var O = toIndexedObject(this);
	    var length = toLength(O.length);
	    var k = toAbsoluteIndex(start, length);
	    var fin = toAbsoluteIndex(end === undefined ? length : end, length);
	    // inline `ArraySpeciesCreate` for usage native `Array#slice` where it's possible
	    var Constructor, result, n;
	    if (isArray(O)) {
	      Constructor = O.constructor;
	      // cross-realm fallback
	      if (typeof Constructor == 'function' && (Constructor === Array || isArray(Constructor.prototype))) {
	        Constructor = undefined;
	      } else if (isObject(Constructor)) {
	        Constructor = Constructor[SPECIES$2];
	        if (Constructor === null) Constructor = undefined;
	      }
	      if (Constructor === Array || Constructor === undefined) {
	        return nativeSlice.call(O, k, fin);
	      }
	    }
	    result = new (Constructor === undefined ? Array : Constructor)(max$1(fin - k, 0));
	    for (n = 0; k < fin; k++, n++) if (k in O) createProperty(result, n, O[k]);
	    result.length = n;
	    return result;
	  }
	});

	var $some = arrayIteration.some;


	// `Array.prototype.some` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.some
	_export({ target: 'Array', proto: true, forced: sloppyArrayMethod('some') }, {
	  some: function some(callbackfn /* , thisArg */) {
	    return $some(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
	  }
	});

	var nativeSort = [].sort;
	var test$1 = [1, 2, 3];

	// IE8-
	var FAILS_ON_UNDEFINED = fails(function () {
	  test$1.sort(undefined);
	});
	// V8 bug
	var FAILS_ON_NULL = fails(function () {
	  test$1.sort(null);
	});
	// Old WebKit
	var SLOPPY_METHOD$3 = sloppyArrayMethod('sort');

	var FORCED$1 = FAILS_ON_UNDEFINED || !FAILS_ON_NULL || SLOPPY_METHOD$3;

	// `Array.prototype.sort` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.sort
	_export({ target: 'Array', proto: true, forced: FORCED$1 }, {
	  sort: function sort(comparefn) {
	    return comparefn === undefined
	      ? nativeSort.call(toObject(this))
	      : nativeSort.call(toObject(this), aFunction$1(comparefn));
	  }
	});

	var SPECIES$3 = wellKnownSymbol('species');

	var setSpecies = function (CONSTRUCTOR_NAME) {
	  var Constructor = getBuiltIn(CONSTRUCTOR_NAME);
	  var defineProperty = objectDefineProperty.f;

	  if (descriptors && Constructor && !Constructor[SPECIES$3]) {
	    defineProperty(Constructor, SPECIES$3, {
	      configurable: true,
	      get: function () { return this; }
	    });
	  }
	};

	// `Array[@@species]` getter
	// https://tc39.github.io/ecma262/#sec-get-array-@@species
	setSpecies('Array');

	var max$2 = Math.max;
	var min$4 = Math.min;
	var MAX_SAFE_INTEGER$1 = 0x1FFFFFFFFFFFFF;
	var MAXIMUM_ALLOWED_LENGTH_EXCEEDED = 'Maximum allowed length exceeded';

	// `Array.prototype.splice` method
	// https://tc39.github.io/ecma262/#sec-array.prototype.splice
	// with adding support of @@species
	_export({ target: 'Array', proto: true, forced: !arrayMethodHasSpeciesSupport('splice') }, {
	  splice: function splice(start, deleteCount /* , ...items */) {
	    var O = toObject(this);
	    var len = toLength(O.length);
	    var actualStart = toAbsoluteIndex(start, len);
	    var argumentsLength = arguments.length;
	    var insertCount, actualDeleteCount, A, k, from, to;
	    if (argumentsLength === 0) {
	      insertCount = actualDeleteCount = 0;
	    } else if (argumentsLength === 1) {
	      insertCount = 0;
	      actualDeleteCount = len - actualStart;
	    } else {
	      insertCount = argumentsLength - 2;
	      actualDeleteCount = min$4(max$2(toInteger(deleteCount), 0), len - actualStart);
	    }
	    if (len + insertCount - actualDeleteCount > MAX_SAFE_INTEGER$1) {
	      throw TypeError(MAXIMUM_ALLOWED_LENGTH_EXCEEDED);
	    }
	    A = arraySpeciesCreate(O, actualDeleteCount);
	    for (k = 0; k < actualDeleteCount; k++) {
	      from = actualStart + k;
	      if (from in O) createProperty(A, k, O[from]);
	    }
	    A.length = actualDeleteCount;
	    if (insertCount < actualDeleteCount) {
	      for (k = actualStart; k < len - actualDeleteCount; k++) {
	        from = k + actualDeleteCount;
	        to = k + insertCount;
	        if (from in O) O[to] = O[from];
	        else delete O[to];
	      }
	      for (k = len; k > len - actualDeleteCount + insertCount; k--) delete O[k - 1];
	    } else if (insertCount > actualDeleteCount) {
	      for (k = len - actualDeleteCount; k > actualStart; k--) {
	        from = k + actualDeleteCount - 1;
	        to = k + insertCount - 1;
	        if (from in O) O[to] = O[from];
	        else delete O[to];
	      }
	    }
	    for (k = 0; k < insertCount; k++) {
	      O[k + actualStart] = arguments[k + 2];
	    }
	    O.length = len - actualDeleteCount + insertCount;
	    return A;
	  }
	});

	// this method was added to unscopables after implementation
	// in popular engines, so it's moved to a separate module


	addToUnscopables('flat');

	// this method was added to unscopables after implementation
	// in popular engines, so it's moved to a separate module


	addToUnscopables('flatMap');

	var defineProperty$3 = objectDefineProperty.f;





	var DataView = global_1.DataView;
	var DataViewPrototype = DataView && DataView.prototype;
	var Int8Array$1 = global_1.Int8Array;
	var Int8ArrayPrototype = Int8Array$1 && Int8Array$1.prototype;
	var Uint8ClampedArray = global_1.Uint8ClampedArray;
	var Uint8ClampedArrayPrototype = Uint8ClampedArray && Uint8ClampedArray.prototype;
	var TypedArray = Int8Array$1 && objectGetPrototypeOf(Int8Array$1);
	var TypedArrayPrototype = Int8ArrayPrototype && objectGetPrototypeOf(Int8ArrayPrototype);
	var ObjectPrototype$2 = Object.prototype;
	var isPrototypeOf = ObjectPrototype$2.isPrototypeOf;

	var TO_STRING_TAG$2 = wellKnownSymbol('toStringTag');
	var TYPED_ARRAY_TAG = uid('TYPED_ARRAY_TAG');
	var NATIVE_ARRAY_BUFFER = !!(global_1.ArrayBuffer && DataView);
	// Fixing native typed arrays in Opera Presto crashes the browser, see #595
	var NATIVE_ARRAY_BUFFER_VIEWS = NATIVE_ARRAY_BUFFER && !!objectSetPrototypeOf && classof(global_1.opera) !== 'Opera';
	var TYPED_ARRAY_TAG_REQIRED = false;
	var NAME;

	var TypedArrayConstructorsList = {
	  Int8Array: 1,
	  Uint8Array: 1,
	  Uint8ClampedArray: 1,
	  Int16Array: 2,
	  Uint16Array: 2,
	  Int32Array: 4,
	  Uint32Array: 4,
	  Float32Array: 4,
	  Float64Array: 8
	};

	var isView = function isView(it) {
	  var klass = classof(it);
	  return klass === 'DataView' || has(TypedArrayConstructorsList, klass);
	};

	var isTypedArray = function (it) {
	  return isObject(it) && has(TypedArrayConstructorsList, classof(it));
	};

	var aTypedArray = function (it) {
	  if (isTypedArray(it)) return it;
	  throw TypeError('Target is not a typed array');
	};

	var aTypedArrayConstructor = function (C) {
	  if (objectSetPrototypeOf) {
	    if (isPrototypeOf.call(TypedArray, C)) return C;
	  } else for (var ARRAY in TypedArrayConstructorsList) if (has(TypedArrayConstructorsList, NAME)) {
	    var TypedArrayConstructor = global_1[ARRAY];
	    if (TypedArrayConstructor && (C === TypedArrayConstructor || isPrototypeOf.call(TypedArrayConstructor, C))) {
	      return C;
	    }
	  } throw TypeError('Target is not a typed array constructor');
	};

	var exportProto = function (KEY, property, forced) {
	  if (!descriptors) return;
	  if (forced) for (var ARRAY in TypedArrayConstructorsList) {
	    var TypedArrayConstructor = global_1[ARRAY];
	    if (TypedArrayConstructor && has(TypedArrayConstructor.prototype, KEY)) {
	      delete TypedArrayConstructor.prototype[KEY];
	    }
	  }
	  if (!TypedArrayPrototype[KEY] || forced) {
	    redefine(TypedArrayPrototype, KEY, forced ? property
	      : NATIVE_ARRAY_BUFFER_VIEWS && Int8ArrayPrototype[KEY] || property);
	  }
	};

	var exportStatic = function (KEY, property, forced) {
	  var ARRAY, TypedArrayConstructor;
	  if (!descriptors) return;
	  if (objectSetPrototypeOf) {
	    if (forced) for (ARRAY in TypedArrayConstructorsList) {
	      TypedArrayConstructor = global_1[ARRAY];
	      if (TypedArrayConstructor && has(TypedArrayConstructor, KEY)) {
	        delete TypedArrayConstructor[KEY];
	      }
	    }
	    if (!TypedArray[KEY] || forced) {
	      // V8 ~ Chrome 49-50 `%TypedArray%` methods are non-writable non-configurable
	      try {
	        return redefine(TypedArray, KEY, forced ? property : NATIVE_ARRAY_BUFFER_VIEWS && Int8Array$1[KEY] || property);
	      } catch (error) { /* empty */ }
	    } else return;
	  }
	  for (ARRAY in TypedArrayConstructorsList) {
	    TypedArrayConstructor = global_1[ARRAY];
	    if (TypedArrayConstructor && (!TypedArrayConstructor[KEY] || forced)) {
	      redefine(TypedArrayConstructor, KEY, property);
	    }
	  }
	};

	for (NAME in TypedArrayConstructorsList) {
	  if (!global_1[NAME]) NATIVE_ARRAY_BUFFER_VIEWS = false;
	}

	// WebKit bug - typed arrays constructors prototype is Object.prototype
	if (!NATIVE_ARRAY_BUFFER_VIEWS || typeof TypedArray != 'function' || TypedArray === Function.prototype) {
	  // eslint-disable-next-line no-shadow
	  TypedArray = function TypedArray() {
	    throw TypeError('Incorrect invocation');
	  };
	  if (NATIVE_ARRAY_BUFFER_VIEWS) for (NAME in TypedArrayConstructorsList) {
	    if (global_1[NAME]) objectSetPrototypeOf(global_1[NAME], TypedArray);
	  }
	}

	if (!NATIVE_ARRAY_BUFFER_VIEWS || !TypedArrayPrototype || TypedArrayPrototype === ObjectPrototype$2) {
	  TypedArrayPrototype = TypedArray.prototype;
	  if (NATIVE_ARRAY_BUFFER_VIEWS) for (NAME in TypedArrayConstructorsList) {
	    if (global_1[NAME]) objectSetPrototypeOf(global_1[NAME].prototype, TypedArrayPrototype);
	  }
	}

	// WebKit bug - one more object in Uint8ClampedArray prototype chain
	if (NATIVE_ARRAY_BUFFER_VIEWS && objectGetPrototypeOf(Uint8ClampedArrayPrototype) !== TypedArrayPrototype) {
	  objectSetPrototypeOf(Uint8ClampedArrayPrototype, TypedArrayPrototype);
	}

	if (descriptors && !has(TypedArrayPrototype, TO_STRING_TAG$2)) {
	  TYPED_ARRAY_TAG_REQIRED = true;
	  defineProperty$3(TypedArrayPrototype, TO_STRING_TAG$2, { get: function () {
	    return isObject(this) ? this[TYPED_ARRAY_TAG] : undefined;
	  } });
	  for (NAME in TypedArrayConstructorsList) if (global_1[NAME]) {
	    hide(global_1[NAME], TYPED_ARRAY_TAG, NAME);
	  }
	}

	// WebKit bug - the same parent prototype for typed arrays and data view
	if (NATIVE_ARRAY_BUFFER && objectSetPrototypeOf && objectGetPrototypeOf(DataViewPrototype) !== ObjectPrototype$2) {
	  objectSetPrototypeOf(DataViewPrototype, ObjectPrototype$2);
	}

	var arrayBufferViewCore = {
	  NATIVE_ARRAY_BUFFER: NATIVE_ARRAY_BUFFER,
	  NATIVE_ARRAY_BUFFER_VIEWS: NATIVE_ARRAY_BUFFER_VIEWS,
	  TYPED_ARRAY_TAG: TYPED_ARRAY_TAG_REQIRED && TYPED_ARRAY_TAG,
	  aTypedArray: aTypedArray,
	  aTypedArrayConstructor: aTypedArrayConstructor,
	  exportProto: exportProto,
	  exportStatic: exportStatic,
	  isView: isView,
	  isTypedArray: isTypedArray,
	  TypedArray: TypedArray,
	  TypedArrayPrototype: TypedArrayPrototype
	};

	var redefineAll = function (target, src, options) {
	  for (var key in src) redefine(target, key, src[key], options);
	  return target;
	};

	var anInstance = function (it, Constructor, name) {
	  if (!(it instanceof Constructor)) {
	    throw TypeError('Incorrect ' + (name ? name + ' ' : '') + 'invocation');
	  } return it;
	};

	// `ToIndex` abstract operation
	// https://tc39.github.io/ecma262/#sec-toindex
	var toIndex = function (it) {
	  if (it === undefined) return 0;
	  var number = toInteger(it);
	  var length = toLength(number);
	  if (number !== length) throw RangeError('Wrong length or index');
	  return length;
	};

	var arrayBuffer = createCommonjsModule(function (module, exports) {


	var NATIVE_ARRAY_BUFFER = arrayBufferViewCore.NATIVE_ARRAY_BUFFER;







	var getOwnPropertyNames = objectGetOwnPropertyNames.f;
	var defineProperty = objectDefineProperty.f;




	var getInternalState = internalState.get;
	var setInternalState = internalState.set;
	var ARRAY_BUFFER = 'ArrayBuffer';
	var DATA_VIEW = 'DataView';
	var PROTOTYPE = 'prototype';
	var WRONG_LENGTH = 'Wrong length';
	var WRONG_INDEX = 'Wrong index';
	var NativeArrayBuffer = global_1[ARRAY_BUFFER];
	var $ArrayBuffer = NativeArrayBuffer;
	var $DataView = global_1[DATA_VIEW];
	var Math = global_1.Math;
	var RangeError = global_1.RangeError;
	// eslint-disable-next-line no-shadow-restricted-names
	var Infinity = 1 / 0;
	var abs = Math.abs;
	var pow = Math.pow;
	var floor = Math.floor;
	var log = Math.log;
	var LN2 = Math.LN2;

	// IEEE754 conversions based on https://github.com/feross/ieee754
	var packIEEE754 = function (number, mantissaLength, bytes) {
	  var buffer = new Array(bytes);
	  var exponentLength = bytes * 8 - mantissaLength - 1;
	  var eMax = (1 << exponentLength) - 1;
	  var eBias = eMax >> 1;
	  var rt = mantissaLength === 23 ? pow(2, -24) - pow(2, -77) : 0;
	  var sign = number < 0 || number === 0 && 1 / number < 0 ? 1 : 0;
	  var index = 0;
	  var exponent, mantissa, c;
	  number = abs(number);
	  // eslint-disable-next-line no-self-compare
	  if (number != number || number === Infinity) {
	    // eslint-disable-next-line no-self-compare
	    mantissa = number != number ? 1 : 0;
	    exponent = eMax;
	  } else {
	    exponent = floor(log(number) / LN2);
	    if (number * (c = pow(2, -exponent)) < 1) {
	      exponent--;
	      c *= 2;
	    }
	    if (exponent + eBias >= 1) {
	      number += rt / c;
	    } else {
	      number += rt * pow(2, 1 - eBias);
	    }
	    if (number * c >= 2) {
	      exponent++;
	      c /= 2;
	    }
	    if (exponent + eBias >= eMax) {
	      mantissa = 0;
	      exponent = eMax;
	    } else if (exponent + eBias >= 1) {
	      mantissa = (number * c - 1) * pow(2, mantissaLength);
	      exponent = exponent + eBias;
	    } else {
	      mantissa = number * pow(2, eBias - 1) * pow(2, mantissaLength);
	      exponent = 0;
	    }
	  }
	  for (; mantissaLength >= 8; buffer[index++] = mantissa & 255, mantissa /= 256, mantissaLength -= 8);
	  exponent = exponent << mantissaLength | mantissa;
	  exponentLength += mantissaLength;
	  for (; exponentLength > 0; buffer[index++] = exponent & 255, exponent /= 256, exponentLength -= 8);
	  buffer[--index] |= sign * 128;
	  return buffer;
	};

	var unpackIEEE754 = function (buffer, mantissaLength) {
	  var bytes = buffer.length;
	  var exponentLength = bytes * 8 - mantissaLength - 1;
	  var eMax = (1 << exponentLength) - 1;
	  var eBias = eMax >> 1;
	  var nBits = exponentLength - 7;
	  var index = bytes - 1;
	  var sign = buffer[index--];
	  var exponent = sign & 127;
	  var mantissa;
	  sign >>= 7;
	  for (; nBits > 0; exponent = exponent * 256 + buffer[index], index--, nBits -= 8);
	  mantissa = exponent & (1 << -nBits) - 1;
	  exponent >>= -nBits;
	  nBits += mantissaLength;
	  for (; nBits > 0; mantissa = mantissa * 256 + buffer[index], index--, nBits -= 8);
	  if (exponent === 0) {
	    exponent = 1 - eBias;
	  } else if (exponent === eMax) {
	    return mantissa ? NaN : sign ? -Infinity : Infinity;
	  } else {
	    mantissa = mantissa + pow(2, mantissaLength);
	    exponent = exponent - eBias;
	  } return (sign ? -1 : 1) * mantissa * pow(2, exponent - mantissaLength);
	};

	var unpackInt32 = function (buffer) {
	  return buffer[3] << 24 | buffer[2] << 16 | buffer[1] << 8 | buffer[0];
	};

	var packInt8 = function (number) {
	  return [number & 0xFF];
	};

	var packInt16 = function (number) {
	  return [number & 0xFF, number >> 8 & 0xFF];
	};

	var packInt32 = function (number) {
	  return [number & 0xFF, number >> 8 & 0xFF, number >> 16 & 0xFF, number >> 24 & 0xFF];
	};

	var packFloat32 = function (number) {
	  return packIEEE754(number, 23, 4);
	};

	var packFloat64 = function (number) {
	  return packIEEE754(number, 52, 8);
	};

	var addGetter = function (Constructor, key) {
	  defineProperty(Constructor[PROTOTYPE], key, { get: function () { return getInternalState(this)[key]; } });
	};

	var get = function (view, count, index, isLittleEndian) {
	  var numIndex = +index;
	  var intIndex = toIndex(numIndex);
	  var store = getInternalState(view);
	  if (intIndex + count > store.byteLength) throw RangeError(WRONG_INDEX);
	  var bytes = getInternalState(store.buffer).bytes;
	  var start = intIndex + store.byteOffset;
	  var pack = bytes.slice(start, start + count);
	  return isLittleEndian ? pack : pack.reverse();
	};

	var set = function (view, count, index, conversion, value, isLittleEndian) {
	  var numIndex = +index;
	  var intIndex = toIndex(numIndex);
	  var store = getInternalState(view);
	  if (intIndex + count > store.byteLength) throw RangeError(WRONG_INDEX);
	  var bytes = getInternalState(store.buffer).bytes;
	  var start = intIndex + store.byteOffset;
	  var pack = conversion(+value);
	  for (var i = 0; i < count; i++) bytes[start + i] = pack[isLittleEndian ? i : count - i - 1];
	};

	if (!NATIVE_ARRAY_BUFFER) {
	  $ArrayBuffer = function ArrayBuffer(length) {
	    anInstance(this, $ArrayBuffer, ARRAY_BUFFER);
	    var byteLength = toIndex(length);
	    setInternalState(this, {
	      bytes: arrayFill.call(new Array(byteLength), 0),
	      byteLength: byteLength
	    });
	    if (!descriptors) this.byteLength = byteLength;
	  };

	  $DataView = function DataView(buffer, byteOffset, byteLength) {
	    anInstance(this, $DataView, DATA_VIEW);
	    anInstance(buffer, $ArrayBuffer, DATA_VIEW);
	    var bufferLength = getInternalState(buffer).byteLength;
	    var offset = toInteger(byteOffset);
	    if (offset < 0 || offset > bufferLength) throw RangeError('Wrong offset');
	    byteLength = byteLength === undefined ? bufferLength - offset : toLength(byteLength);
	    if (offset + byteLength > bufferLength) throw RangeError(WRONG_LENGTH);
	    setInternalState(this, {
	      buffer: buffer,
	      byteLength: byteLength,
	      byteOffset: offset
	    });
	    if (!descriptors) {
	      this.buffer = buffer;
	      this.byteLength = byteLength;
	      this.byteOffset = offset;
	    }
	  };

	  if (descriptors) {
	    addGetter($ArrayBuffer, 'byteLength');
	    addGetter($DataView, 'buffer');
	    addGetter($DataView, 'byteLength');
	    addGetter($DataView, 'byteOffset');
	  }

	  redefineAll($DataView[PROTOTYPE], {
	    getInt8: function getInt8(byteOffset) {
	      return get(this, 1, byteOffset)[0] << 24 >> 24;
	    },
	    getUint8: function getUint8(byteOffset) {
	      return get(this, 1, byteOffset)[0];
	    },
	    getInt16: function getInt16(byteOffset /* , littleEndian */) {
	      var bytes = get(this, 2, byteOffset, arguments.length > 1 ? arguments[1] : undefined);
	      return (bytes[1] << 8 | bytes[0]) << 16 >> 16;
	    },
	    getUint16: function getUint16(byteOffset /* , littleEndian */) {
	      var bytes = get(this, 2, byteOffset, arguments.length > 1 ? arguments[1] : undefined);
	      return bytes[1] << 8 | bytes[0];
	    },
	    getInt32: function getInt32(byteOffset /* , littleEndian */) {
	      return unpackInt32(get(this, 4, byteOffset, arguments.length > 1 ? arguments[1] : undefined));
	    },
	    getUint32: function getUint32(byteOffset /* , littleEndian */) {
	      return unpackInt32(get(this, 4, byteOffset, arguments.length > 1 ? arguments[1] : undefined)) >>> 0;
	    },
	    getFloat32: function getFloat32(byteOffset /* , littleEndian */) {
	      return unpackIEEE754(get(this, 4, byteOffset, arguments.length > 1 ? arguments[1] : undefined), 23);
	    },
	    getFloat64: function getFloat64(byteOffset /* , littleEndian */) {
	      return unpackIEEE754(get(this, 8, byteOffset, arguments.length > 1 ? arguments[1] : undefined), 52);
	    },
	    setInt8: function setInt8(byteOffset, value) {
	      set(this, 1, byteOffset, packInt8, value);
	    },
	    setUint8: function setUint8(byteOffset, value) {
	      set(this, 1, byteOffset, packInt8, value);
	    },
	    setInt16: function setInt16(byteOffset, value /* , littleEndian */) {
	      set(this, 2, byteOffset, packInt16, value, arguments.length > 2 ? arguments[2] : undefined);
	    },
	    setUint16: function setUint16(byteOffset, value /* , littleEndian */) {
	      set(this, 2, byteOffset, packInt16, value, arguments.length > 2 ? arguments[2] : undefined);
	    },
	    setInt32: function setInt32(byteOffset, value /* , littleEndian */) {
	      set(this, 4, byteOffset, packInt32, value, arguments.length > 2 ? arguments[2] : undefined);
	    },
	    setUint32: function setUint32(byteOffset, value /* , littleEndian */) {
	      set(this, 4, byteOffset, packInt32, value, arguments.length > 2 ? arguments[2] : undefined);
	    },
	    setFloat32: function setFloat32(byteOffset, value /* , littleEndian */) {
	      set(this, 4, byteOffset, packFloat32, value, arguments.length > 2 ? arguments[2] : undefined);
	    },
	    setFloat64: function setFloat64(byteOffset, value /* , littleEndian */) {
	      set(this, 8, byteOffset, packFloat64, value, arguments.length > 2 ? arguments[2] : undefined);
	    }
	  });
	} else {
	  if (!fails(function () {
	    NativeArrayBuffer(1);
	  }) || !fails(function () {
	    new NativeArrayBuffer(-1); // eslint-disable-line no-new
	  }) || fails(function () {
	    new NativeArrayBuffer(); // eslint-disable-line no-new
	    new NativeArrayBuffer(1.5); // eslint-disable-line no-new
	    new NativeArrayBuffer(NaN); // eslint-disable-line no-new
	    return NativeArrayBuffer.name != ARRAY_BUFFER;
	  })) {
	    $ArrayBuffer = function ArrayBuffer(length) {
	      anInstance(this, $ArrayBuffer);
	      return new NativeArrayBuffer(toIndex(length));
	    };
	    var ArrayBufferPrototype = $ArrayBuffer[PROTOTYPE] = NativeArrayBuffer[PROTOTYPE];
	    for (var keys = getOwnPropertyNames(NativeArrayBuffer), j = 0, key; keys.length > j;) {
	      if (!((key = keys[j++]) in $ArrayBuffer)) hide($ArrayBuffer, key, NativeArrayBuffer[key]);
	    }
	    ArrayBufferPrototype.constructor = $ArrayBuffer;
	  }
	  // iOS Safari 7.x bug
	  var testView = new $DataView(new $ArrayBuffer(2));
	  var nativeSetInt8 = $DataView[PROTOTYPE].setInt8;
	  testView.setInt8(0, 2147483648);
	  testView.setInt8(1, 2147483649);
	  if (testView.getInt8(0) || !testView.getInt8(1)) redefineAll($DataView[PROTOTYPE], {
	    setInt8: function setInt8(byteOffset, value) {
	      nativeSetInt8.call(this, byteOffset, value << 24 >> 24);
	    },
	    setUint8: function setUint8(byteOffset, value) {
	      nativeSetInt8.call(this, byteOffset, value << 24 >> 24);
	    }
	  }, { unsafe: true });
	}

	setToStringTag($ArrayBuffer, ARRAY_BUFFER);
	setToStringTag($DataView, DATA_VIEW);
	exports[ARRAY_BUFFER] = $ArrayBuffer;
	exports[DATA_VIEW] = $DataView;
	});

	var ARRAY_BUFFER = 'ArrayBuffer';
	var ArrayBuffer$1 = arrayBuffer[ARRAY_BUFFER];
	var NativeArrayBuffer = global_1[ARRAY_BUFFER];

	// `ArrayBuffer` constructor
	// https://tc39.github.io/ecma262/#sec-arraybuffer-constructor
	_export({ global: true, forced: NativeArrayBuffer !== ArrayBuffer$1 }, {
	  ArrayBuffer: ArrayBuffer$1
	});

	setSpecies(ARRAY_BUFFER);

	var NATIVE_ARRAY_BUFFER_VIEWS$1 = arrayBufferViewCore.NATIVE_ARRAY_BUFFER_VIEWS;

	// `ArrayBuffer.isView` method
	// https://tc39.github.io/ecma262/#sec-arraybuffer.isview
	_export({ target: 'ArrayBuffer', stat: true, forced: !NATIVE_ARRAY_BUFFER_VIEWS$1 }, {
	  isView: arrayBufferViewCore.isView
	});

	var SPECIES$4 = wellKnownSymbol('species');

	// `SpeciesConstructor` abstract operation
	// https://tc39.github.io/ecma262/#sec-speciesconstructor
	var speciesConstructor = function (O, defaultConstructor) {
	  var C = anObject(O).constructor;
	  var S;
	  return C === undefined || (S = anObject(C)[SPECIES$4]) == undefined ? defaultConstructor : aFunction$1(S);
	};

	var ArrayBuffer$2 = arrayBuffer.ArrayBuffer;
	var DataView$1 = arrayBuffer.DataView;
	var nativeArrayBufferSlice = ArrayBuffer$2.prototype.slice;

	var INCORRECT_SLICE = fails(function () {
	  return !new ArrayBuffer$2(2).slice(1, undefined).byteLength;
	});

	// `ArrayBuffer.prototype.slice` method
	// https://tc39.github.io/ecma262/#sec-arraybuffer.prototype.slice
	_export({ target: 'ArrayBuffer', proto: true, unsafe: true, forced: INCORRECT_SLICE }, {
	  slice: function slice(start, end) {
	    if (nativeArrayBufferSlice !== undefined && end === undefined) {
	      return nativeArrayBufferSlice.call(anObject(this), start); // FF fix
	    }
	    var length = anObject(this).byteLength;
	    var first = toAbsoluteIndex(start, length);
	    var fin = toAbsoluteIndex(end === undefined ? length : end, length);
	    var result = new (speciesConstructor(this, ArrayBuffer$2))(toLength(fin - first));
	    var viewSource = new DataView$1(this);
	    var viewTarget = new DataView$1(result);
	    var index = 0;
	    while (first < fin) {
	      viewTarget.setUint8(index++, viewSource.getUint8(first++));
	    } return result;
	  }
	});

	var NATIVE_ARRAY_BUFFER$1 = arrayBufferViewCore.NATIVE_ARRAY_BUFFER;

	// `DataView` constructor
	// https://tc39.github.io/ecma262/#sec-dataview-constructor
	_export({ global: true, forced: !NATIVE_ARRAY_BUFFER$1 }, {
	  DataView: arrayBuffer.DataView
	});

	// `String.prototype.repeat` method implementation
	// https://tc39.github.io/ecma262/#sec-string.prototype.repeat
	var stringRepeat = ''.repeat || function repeat(count) {
	  var str = String(requireObjectCoercible(this));
	  var result = '';
	  var n = toInteger(count);
	  if (n < 0 || n == Infinity) throw RangeError('Wrong number of repetitions');
	  for (;n > 0; (n >>>= 1) && (str += str)) if (n & 1) result += str;
	  return result;
	};

	// https://github.com/tc39/proposal-string-pad-start-end




	var ceil$1 = Math.ceil;

	// `String.prototype.{ padStart, padEnd }` methods implementation
	var createMethod$3 = function (IS_END) {
	  return function ($this, maxLength, fillString) {
	    var S = String(requireObjectCoercible($this));
	    var stringLength = S.length;
	    var fillStr = fillString === undefined ? ' ' : String(fillString);
	    var intMaxLength = toLength(maxLength);
	    var fillLen, stringFiller;
	    if (intMaxLength <= stringLength || fillStr == '') return S;
	    fillLen = intMaxLength - stringLength;
	    stringFiller = stringRepeat.call(fillStr, ceil$1(fillLen / fillStr.length));
	    if (stringFiller.length > fillLen) stringFiller = stringFiller.slice(0, fillLen);
	    return IS_END ? S + stringFiller : stringFiller + S;
	  };
	};

	var stringPad = {
	  // `String.prototype.padStart` method
	  // https://tc39.github.io/ecma262/#sec-string.prototype.padstart
	  start: createMethod$3(false),
	  // `String.prototype.padEnd` method
	  // https://tc39.github.io/ecma262/#sec-string.prototype.padend
	  end: createMethod$3(true)
	};

	var padStart = stringPad.start;

	var abs = Math.abs;
	var DatePrototype = Date.prototype;
	var getTime = DatePrototype.getTime;
	var nativeDateToISOString = DatePrototype.toISOString;

	// `Date.prototype.toISOString` method implementation
	// https://tc39.github.io/ecma262/#sec-date.prototype.toisostring
	// PhantomJS / old WebKit fails here:
	var dateToIsoString = (fails(function () {
	  return nativeDateToISOString.call(new Date(-5e13 - 1)) != '0385-07-25T07:06:39.999Z';
	}) || !fails(function () {
	  nativeDateToISOString.call(new Date(NaN));
	})) ? function toISOString() {
	  if (!isFinite(getTime.call(this))) throw RangeError('Invalid time value');
	  var date = this;
	  var year = date.getUTCFullYear();
	  var milliseconds = date.getUTCMilliseconds();
	  var sign = year < 0 ? '-' : year > 9999 ? '+' : '';
	  return sign + padStart(abs(year), sign ? 6 : 4, 0) +
	    '-' + padStart(date.getUTCMonth() + 1, 2, 0) +
	    '-' + padStart(date.getUTCDate(), 2, 0) +
	    'T' + padStart(date.getUTCHours(), 2, 0) +
	    ':' + padStart(date.getUTCMinutes(), 2, 0) +
	    ':' + padStart(date.getUTCSeconds(), 2, 0) +
	    '.' + padStart(milliseconds, 3, 0) +
	    'Z';
	} : nativeDateToISOString;

	// `Date.prototype.toISOString` method
	// https://tc39.github.io/ecma262/#sec-date.prototype.toisostring
	// PhantomJS / old WebKit has a broken implementations
	_export({ target: 'Date', proto: true, forced: Date.prototype.toISOString !== dateToIsoString }, {
	  toISOString: dateToIsoString
	});

	var FORCED$2 = fails(function () {
	  return new Date(NaN).toJSON() !== null
	    || Date.prototype.toJSON.call({ toISOString: function () { return 1; } }) !== 1;
	});

	// `Date.prototype.toJSON` method
	// https://tc39.github.io/ecma262/#sec-date.prototype.tojson
	_export({ target: 'Date', proto: true, forced: FORCED$2 }, {
	  // eslint-disable-next-line no-unused-vars
	  toJSON: function toJSON(key) {
	    var O = toObject(this);
	    var pv = toPrimitive(O);
	    return typeof pv == 'number' && !isFinite(pv) ? null : O.toISOString();
	  }
	});

	var dateToPrimitive = function (hint) {
	  if (hint !== 'string' && hint !== 'number' && hint !== 'default') {
	    throw TypeError('Incorrect hint');
	  } return toPrimitive(anObject(this), hint !== 'number');
	};

	var TO_PRIMITIVE$1 = wellKnownSymbol('toPrimitive');
	var DatePrototype$1 = Date.prototype;

	// `Date.prototype[@@toPrimitive]` method
	// https://tc39.github.io/ecma262/#sec-date.prototype-@@toprimitive
	if (!(TO_PRIMITIVE$1 in DatePrototype$1)) hide(DatePrototype$1, TO_PRIMITIVE$1, dateToPrimitive);

	var DatePrototype$2 = Date.prototype;
	var INVALID_DATE = 'Invalid Date';
	var TO_STRING = 'toString';
	var nativeDateToString = DatePrototype$2[TO_STRING];
	var getTime$1 = DatePrototype$2.getTime;

	// `Date.prototype.toString` method
	// https://tc39.github.io/ecma262/#sec-date.prototype.tostring
	if (new Date(NaN) + '' != INVALID_DATE) {
	  redefine(DatePrototype$2, TO_STRING, function toString() {
	    var value = getTime$1.call(this);
	    // eslint-disable-next-line no-self-compare
	    return value === value ? nativeDateToString.call(this) : INVALID_DATE;
	  });
	}

	var HAS_INSTANCE = wellKnownSymbol('hasInstance');
	var FunctionPrototype = Function.prototype;

	// `Function.prototype[@@hasInstance]` method
	// https://tc39.github.io/ecma262/#sec-function.prototype-@@hasinstance
	if (!(HAS_INSTANCE in FunctionPrototype)) {
	  objectDefineProperty.f(FunctionPrototype, HAS_INSTANCE, { value: function (O) {
	    if (typeof this != 'function' || !isObject(O)) return false;
	    if (!isObject(this.prototype)) return O instanceof this;
	    // for environment w/o native `@@hasInstance` logic enough `instanceof`, but add this:
	    while (O = objectGetPrototypeOf(O)) if (this.prototype === O) return true;
	    return false;
	  } });
	}

	var defineProperty$4 = objectDefineProperty.f;

	var FunctionPrototype$1 = Function.prototype;
	var FunctionPrototypeToString = FunctionPrototype$1.toString;
	var nameRE = /^\s*function ([^ (]*)/;
	var NAME$1 = 'name';

	// Function instances `.name` property
	// https://tc39.github.io/ecma262/#sec-function-instances-name
	if (descriptors && !(NAME$1 in FunctionPrototype$1)) {
	  defineProperty$4(FunctionPrototype$1, NAME$1, {
	    configurable: true,
	    get: function () {
	      try {
	        return FunctionPrototypeToString.call(this).match(nameRE)[1];
	      } catch (error) {
	        return '';
	      }
	    }
	  });
	}

	// JSON[@@toStringTag] property
	// https://tc39.github.io/ecma262/#sec-json-@@tostringtag
	setToStringTag(global_1.JSON, 'JSON', true);

	var freezing = !fails(function () {
	  return Object.isExtensible(Object.preventExtensions({}));
	});

	var internalMetadata = createCommonjsModule(function (module) {
	var defineProperty = objectDefineProperty.f;



	var METADATA = uid('meta');
	var id = 0;

	var isExtensible = Object.isExtensible || function () {
	  return true;
	};

	var setMetadata = function (it) {
	  defineProperty(it, METADATA, { value: {
	    objectID: 'O' + ++id, // object ID
	    weakData: {}          // weak collections IDs
	  } });
	};

	var fastKey = function (it, create) {
	  // return a primitive with prefix
	  if (!isObject(it)) return typeof it == 'symbol' ? it : (typeof it == 'string' ? 'S' : 'P') + it;
	  if (!has(it, METADATA)) {
	    // can't set metadata to uncaught frozen object
	    if (!isExtensible(it)) return 'F';
	    // not necessary to add metadata
	    if (!create) return 'E';
	    // add missing metadata
	    setMetadata(it);
	  // return object ID
	  } return it[METADATA].objectID;
	};

	var getWeakData = function (it, create) {
	  if (!has(it, METADATA)) {
	    // can't set metadata to uncaught frozen object
	    if (!isExtensible(it)) return true;
	    // not necessary to add metadata
	    if (!create) return false;
	    // add missing metadata
	    setMetadata(it);
	  // return the store of weak collections IDs
	  } return it[METADATA].weakData;
	};

	// add metadata on freeze-family methods calling
	var onFreeze = function (it) {
	  if (freezing && meta.REQUIRED && isExtensible(it) && !has(it, METADATA)) setMetadata(it);
	  return it;
	};

	var meta = module.exports = {
	  REQUIRED: false,
	  fastKey: fastKey,
	  getWeakData: getWeakData,
	  onFreeze: onFreeze
	};

	hiddenKeys[METADATA] = true;
	});
	var internalMetadata_1 = internalMetadata.REQUIRED;
	var internalMetadata_2 = internalMetadata.fastKey;
	var internalMetadata_3 = internalMetadata.getWeakData;
	var internalMetadata_4 = internalMetadata.onFreeze;

	var iterate_1 = createCommonjsModule(function (module) {
	var Result = function (stopped, result) {
	  this.stopped = stopped;
	  this.result = result;
	};

	var iterate = module.exports = function (iterable, fn, that, AS_ENTRIES, IS_ITERATOR) {
	  var boundFunction = bindContext(fn, that, AS_ENTRIES ? 2 : 1);
	  var iterator, iterFn, index, length, result, step;

	  if (IS_ITERATOR) {
	    iterator = iterable;
	  } else {
	    iterFn = getIteratorMethod(iterable);
	    if (typeof iterFn != 'function') throw TypeError('Target is not iterable');
	    // optimisation for array iterators
	    if (isArrayIteratorMethod(iterFn)) {
	      for (index = 0, length = toLength(iterable.length); length > index; index++) {
	        result = AS_ENTRIES
	          ? boundFunction(anObject(step = iterable[index])[0], step[1])
	          : boundFunction(iterable[index]);
	        if (result && result instanceof Result) return result;
	      } return new Result(false);
	    }
	    iterator = iterFn.call(iterable);
	  }

	  while (!(step = iterator.next()).done) {
	    result = callWithSafeIterationClosing(iterator, boundFunction, step.value, AS_ENTRIES);
	    if (result && result instanceof Result) return result;
	  } return new Result(false);
	};

	iterate.stop = function (result) {
	  return new Result(true, result);
	};
	});

	// makes subclassing work correct for wrapped built-ins
	var inheritIfRequired = function ($this, dummy, Wrapper) {
	  var NewTarget, NewTargetPrototype;
	  if (
	    // it can work only with native `setPrototypeOf`
	    objectSetPrototypeOf &&
	    // we haven't completely correct pre-ES6 way for getting `new.target`, so use this
	    typeof (NewTarget = dummy.constructor) == 'function' &&
	    NewTarget !== Wrapper &&
	    isObject(NewTargetPrototype = NewTarget.prototype) &&
	    NewTargetPrototype !== Wrapper.prototype
	  ) objectSetPrototypeOf($this, NewTargetPrototype);
	  return $this;
	};

	var collection = function (CONSTRUCTOR_NAME, wrapper, common, IS_MAP, IS_WEAK) {
	  var NativeConstructor = global_1[CONSTRUCTOR_NAME];
	  var NativePrototype = NativeConstructor && NativeConstructor.prototype;
	  var Constructor = NativeConstructor;
	  var ADDER = IS_MAP ? 'set' : 'add';
	  var exported = {};

	  var fixMethod = function (KEY) {
	    var nativeMethod = NativePrototype[KEY];
	    redefine(NativePrototype, KEY,
	      KEY == 'add' ? function add(value) {
	        nativeMethod.call(this, value === 0 ? 0 : value);
	        return this;
	      } : KEY == 'delete' ? function (key) {
	        return IS_WEAK && !isObject(key) ? false : nativeMethod.call(this, key === 0 ? 0 : key);
	      } : KEY == 'get' ? function get(key) {
	        return IS_WEAK && !isObject(key) ? undefined : nativeMethod.call(this, key === 0 ? 0 : key);
	      } : KEY == 'has' ? function has(key) {
	        return IS_WEAK && !isObject(key) ? false : nativeMethod.call(this, key === 0 ? 0 : key);
	      } : function set(key, value) {
	        nativeMethod.call(this, key === 0 ? 0 : key, value);
	        return this;
	      }
	    );
	  };

	  // eslint-disable-next-line max-len
	  if (isForced_1(CONSTRUCTOR_NAME, typeof NativeConstructor != 'function' || !(IS_WEAK || NativePrototype.forEach && !fails(function () {
	    new NativeConstructor().entries().next();
	  })))) {
	    // create collection constructor
	    Constructor = common.getConstructor(wrapper, CONSTRUCTOR_NAME, IS_MAP, ADDER);
	    internalMetadata.REQUIRED = true;
	  } else if (isForced_1(CONSTRUCTOR_NAME, true)) {
	    var instance = new Constructor();
	    // early implementations not supports chaining
	    var HASNT_CHAINING = instance[ADDER](IS_WEAK ? {} : -0, 1) != instance;
	    // V8 ~ Chromium 40- weak-collections throws on primitives, but should return false
	    var THROWS_ON_PRIMITIVES = fails(function () { instance.has(1); });
	    // most early implementations doesn't supports iterables, most modern - not close it correctly
	    // eslint-disable-next-line no-new
	    var ACCEPT_ITERABLES = checkCorrectnessOfIteration(function (iterable) { new NativeConstructor(iterable); });
	    // for early implementations -0 and +0 not the same
	    var BUGGY_ZERO = !IS_WEAK && fails(function () {
	      // V8 ~ Chromium 42- fails only with 5+ elements
	      var $instance = new NativeConstructor();
	      var index = 5;
	      while (index--) $instance[ADDER](index, index);
	      return !$instance.has(-0);
	    });

	    if (!ACCEPT_ITERABLES) {
	      Constructor = wrapper(function (dummy, iterable) {
	        anInstance(dummy, Constructor, CONSTRUCTOR_NAME);
	        var that = inheritIfRequired(new NativeConstructor(), dummy, Constructor);
	        if (iterable != undefined) iterate_1(iterable, that[ADDER], that, IS_MAP);
	        return that;
	      });
	      Constructor.prototype = NativePrototype;
	      NativePrototype.constructor = Constructor;
	    }

	    if (THROWS_ON_PRIMITIVES || BUGGY_ZERO) {
	      fixMethod('delete');
	      fixMethod('has');
	      IS_MAP && fixMethod('get');
	    }

	    if (BUGGY_ZERO || HASNT_CHAINING) fixMethod(ADDER);

	    // weak collections should not contains .clear method
	    if (IS_WEAK && NativePrototype.clear) delete NativePrototype.clear;
	  }

	  exported[CONSTRUCTOR_NAME] = Constructor;
	  _export({ global: true, forced: Constructor != NativeConstructor }, exported);

	  setToStringTag(Constructor, CONSTRUCTOR_NAME);

	  if (!IS_WEAK) common.setStrong(Constructor, CONSTRUCTOR_NAME, IS_MAP);

	  return Constructor;
	};

	var defineProperty$5 = objectDefineProperty.f;








	var fastKey = internalMetadata.fastKey;


	var setInternalState$2 = internalState.set;
	var internalStateGetterFor = internalState.getterFor;

	var collectionStrong = {
	  getConstructor: function (wrapper, CONSTRUCTOR_NAME, IS_MAP, ADDER) {
	    var C = wrapper(function (that, iterable) {
	      anInstance(that, C, CONSTRUCTOR_NAME);
	      setInternalState$2(that, {
	        type: CONSTRUCTOR_NAME,
	        index: objectCreate(null),
	        first: undefined,
	        last: undefined,
	        size: 0
	      });
	      if (!descriptors) that.size = 0;
	      if (iterable != undefined) iterate_1(iterable, that[ADDER], that, IS_MAP);
	    });

	    var getInternalState = internalStateGetterFor(CONSTRUCTOR_NAME);

	    var define = function (that, key, value) {
	      var state = getInternalState(that);
	      var entry = getEntry(that, key);
	      var previous, index;
	      // change existing entry
	      if (entry) {
	        entry.value = value;
	      // create new entry
	      } else {
	        state.last = entry = {
	          index: index = fastKey(key, true),
	          key: key,
	          value: value,
	          previous: previous = state.last,
	          next: undefined,
	          removed: false
	        };
	        if (!state.first) state.first = entry;
	        if (previous) previous.next = entry;
	        if (descriptors) state.size++;
	        else that.size++;
	        // add to index
	        if (index !== 'F') state.index[index] = entry;
	      } return that;
	    };

	    var getEntry = function (that, key) {
	      var state = getInternalState(that);
	      // fast case
	      var index = fastKey(key);
	      var entry;
	      if (index !== 'F') return state.index[index];
	      // frozen object case
	      for (entry = state.first; entry; entry = entry.next) {
	        if (entry.key == key) return entry;
	      }
	    };

	    redefineAll(C.prototype, {
	      // 23.1.3.1 Map.prototype.clear()
	      // 23.2.3.2 Set.prototype.clear()
	      clear: function clear() {
	        var that = this;
	        var state = getInternalState(that);
	        var data = state.index;
	        var entry = state.first;
	        while (entry) {
	          entry.removed = true;
	          if (entry.previous) entry.previous = entry.previous.next = undefined;
	          delete data[entry.index];
	          entry = entry.next;
	        }
	        state.first = state.last = undefined;
	        if (descriptors) state.size = 0;
	        else that.size = 0;
	      },
	      // 23.1.3.3 Map.prototype.delete(key)
	      // 23.2.3.4 Set.prototype.delete(value)
	      'delete': function (key) {
	        var that = this;
	        var state = getInternalState(that);
	        var entry = getEntry(that, key);
	        if (entry) {
	          var next = entry.next;
	          var prev = entry.previous;
	          delete state.index[entry.index];
	          entry.removed = true;
	          if (prev) prev.next = next;
	          if (next) next.previous = prev;
	          if (state.first == entry) state.first = next;
	          if (state.last == entry) state.last = prev;
	          if (descriptors) state.size--;
	          else that.size--;
	        } return !!entry;
	      },
	      // 23.2.3.6 Set.prototype.forEach(callbackfn, thisArg = undefined)
	      // 23.1.3.5 Map.prototype.forEach(callbackfn, thisArg = undefined)
	      forEach: function forEach(callbackfn /* , that = undefined */) {
	        var state = getInternalState(this);
	        var boundFunction = bindContext(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);
	        var entry;
	        while (entry = entry ? entry.next : state.first) {
	          boundFunction(entry.value, entry.key, this);
	          // revert to the last existing entry
	          while (entry && entry.removed) entry = entry.previous;
	        }
	      },
	      // 23.1.3.7 Map.prototype.has(key)
	      // 23.2.3.7 Set.prototype.has(value)
	      has: function has(key) {
	        return !!getEntry(this, key);
	      }
	    });

	    redefineAll(C.prototype, IS_MAP ? {
	      // 23.1.3.6 Map.prototype.get(key)
	      get: function get(key) {
	        var entry = getEntry(this, key);
	        return entry && entry.value;
	      },
	      // 23.1.3.9 Map.prototype.set(key, value)
	      set: function set(key, value) {
	        return define(this, key === 0 ? 0 : key, value);
	      }
	    } : {
	      // 23.2.3.1 Set.prototype.add(value)
	      add: function add(value) {
	        return define(this, value = value === 0 ? 0 : value, value);
	      }
	    });
	    if (descriptors) defineProperty$5(C.prototype, 'size', {
	      get: function () {
	        return getInternalState(this).size;
	      }
	    });
	    return C;
	  },
	  setStrong: function (C, CONSTRUCTOR_NAME, IS_MAP) {
	    var ITERATOR_NAME = CONSTRUCTOR_NAME + ' Iterator';
	    var getInternalCollectionState = internalStateGetterFor(CONSTRUCTOR_NAME);
	    var getInternalIteratorState = internalStateGetterFor(ITERATOR_NAME);
	    // add .keys, .values, .entries, [@@iterator]
	    // 23.1.3.4, 23.1.3.8, 23.1.3.11, 23.1.3.12, 23.2.3.5, 23.2.3.8, 23.2.3.10, 23.2.3.11
	    defineIterator(C, CONSTRUCTOR_NAME, function (iterated, kind) {
	      setInternalState$2(this, {
	        type: ITERATOR_NAME,
	        target: iterated,
	        state: getInternalCollectionState(iterated),
	        kind: kind,
	        last: undefined
	      });
	    }, function () {
	      var state = getInternalIteratorState(this);
	      var kind = state.kind;
	      var entry = state.last;
	      // revert to the last existing entry
	      while (entry && entry.removed) entry = entry.previous;
	      // get next entry
	      if (!state.target || !(state.last = entry = entry ? entry.next : state.state.first)) {
	        // or finish the iteration
	        state.target = undefined;
	        return { value: undefined, done: true };
	      }
	      // return step by kind
	      if (kind == 'keys') return { value: entry.key, done: false };
	      if (kind == 'values') return { value: entry.value, done: false };
	      return { value: [entry.key, entry.value], done: false };
	    }, IS_MAP ? 'entries' : 'values', !IS_MAP, true);

	    // add [@@species], 23.1.2.2, 23.2.2.2
	    setSpecies(CONSTRUCTOR_NAME);
	  }
	};

	// `Map` constructor
	// https://tc39.github.io/ecma262/#sec-map-objects
	var es_map = collection('Map', function (get) {
	  return function Map() { return get(this, arguments.length ? arguments[0] : undefined); };
	}, collectionStrong, true);

	var log = Math.log;

	// `Math.log1p` method implementation
	// https://tc39.github.io/ecma262/#sec-math.log1p
	var mathLog1p = Math.log1p || function log1p(x) {
	  return (x = +x) > -1e-8 && x < 1e-8 ? x - x * x / 2 : log(1 + x);
	};

	var nativeAcosh = Math.acosh;
	var log$1 = Math.log;
	var sqrt = Math.sqrt;
	var LN2 = Math.LN2;

	var FORCED$3 = !nativeAcosh
	  // V8 bug: https://code.google.com/p/v8/issues/detail?id=3509
	  || Math.floor(nativeAcosh(Number.MAX_VALUE)) != 710
	  // Tor Browser bug: Math.acosh(Infinity) -> NaN
	  || nativeAcosh(Infinity) != Infinity;

	// `Math.acosh` method
	// https://tc39.github.io/ecma262/#sec-math.acosh
	_export({ target: 'Math', stat: true, forced: FORCED$3 }, {
	  acosh: function acosh(x) {
	    return (x = +x) < 1 ? NaN : x > 94906265.62425156
	      ? log$1(x) + LN2
	      : mathLog1p(x - 1 + sqrt(x - 1) * sqrt(x + 1));
	  }
	});

	var nativeAsinh = Math.asinh;
	var log$2 = Math.log;
	var sqrt$1 = Math.sqrt;

	function asinh(x) {
	  return !isFinite(x = +x) || x == 0 ? x : x < 0 ? -asinh(-x) : log$2(x + sqrt$1(x * x + 1));
	}

	// `Math.asinh` method
	// https://tc39.github.io/ecma262/#sec-math.asinh
	// Tor Browser bug: Math.asinh(0) -> -0
	_export({ target: 'Math', stat: true, forced: !(nativeAsinh && 1 / nativeAsinh(0) > 0) }, {
	  asinh: asinh
	});

	var nativeAtanh = Math.atanh;
	var log$3 = Math.log;

	// `Math.atanh` method
	// https://tc39.github.io/ecma262/#sec-math.atanh
	// Tor Browser bug: Math.atanh(-0) -> 0
	_export({ target: 'Math', stat: true, forced: !(nativeAtanh && 1 / nativeAtanh(-0) < 0) }, {
	  atanh: function atanh(x) {
	    return (x = +x) == 0 ? x : log$3((1 + x) / (1 - x)) / 2;
	  }
	});

	// `Math.sign` method implementation
	// https://tc39.github.io/ecma262/#sec-math.sign
	var mathSign = Math.sign || function sign(x) {
	  // eslint-disable-next-line no-self-compare
	  return (x = +x) == 0 || x != x ? x : x < 0 ? -1 : 1;
	};

	var abs$1 = Math.abs;
	var pow = Math.pow;

	// `Math.cbrt` method
	// https://tc39.github.io/ecma262/#sec-math.cbrt
	_export({ target: 'Math', stat: true }, {
	  cbrt: function cbrt(x) {
	    return mathSign(x = +x) * pow(abs$1(x), 1 / 3);
	  }
	});

	var floor$1 = Math.floor;
	var log$4 = Math.log;
	var LOG2E = Math.LOG2E;

	// `Math.clz32` method
	// https://tc39.github.io/ecma262/#sec-math.clz32
	_export({ target: 'Math', stat: true }, {
	  clz32: function clz32(x) {
	    return (x >>>= 0) ? 31 - floor$1(log$4(x + 0.5) * LOG2E) : 32;
	  }
	});

	var nativeExpm1 = Math.expm1;
	var exp = Math.exp;

	// `Math.expm1` method implementation
	// https://tc39.github.io/ecma262/#sec-math.expm1
	var mathExpm1 = (!nativeExpm1
	  // Old FF bug
	  || nativeExpm1(10) > 22025.465794806719 || nativeExpm1(10) < 22025.4657948067165168
	  // Tor Browser bug
	  || nativeExpm1(-2e-17) != -2e-17
	) ? function expm1(x) {
	  return (x = +x) == 0 ? x : x > -1e-6 && x < 1e-6 ? x + x * x / 2 : exp(x) - 1;
	} : nativeExpm1;

	var nativeCosh = Math.cosh;
	var abs$2 = Math.abs;
	var E = Math.E;

	// `Math.cosh` method
	// https://tc39.github.io/ecma262/#sec-math.cosh
	_export({ target: 'Math', stat: true, forced: !nativeCosh || nativeCosh(710) === Infinity }, {
	  cosh: function cosh(x) {
	    var t = mathExpm1(abs$2(x) - 1) + 1;
	    return (t + 1 / (t * E * E)) * (E / 2);
	  }
	});

	// `Math.expm1` method
	// https://tc39.github.io/ecma262/#sec-math.expm1
	_export({ target: 'Math', stat: true, forced: mathExpm1 != Math.expm1 }, { expm1: mathExpm1 });

	var abs$3 = Math.abs;
	var pow$1 = Math.pow;
	var EPSILON = pow$1(2, -52);
	var EPSILON32 = pow$1(2, -23);
	var MAX32 = pow$1(2, 127) * (2 - EPSILON32);
	var MIN32 = pow$1(2, -126);

	var roundTiesToEven = function (n) {
	  return n + 1 / EPSILON - 1 / EPSILON;
	};

	// `Math.fround` method implementation
	// https://tc39.github.io/ecma262/#sec-math.fround
	var mathFround = Math.fround || function fround(x) {
	  var $abs = abs$3(x);
	  var $sign = mathSign(x);
	  var a, result;
	  if ($abs < MIN32) return $sign * roundTiesToEven($abs / MIN32 / EPSILON32) * MIN32 * EPSILON32;
	  a = (1 + EPSILON32 / EPSILON) * $abs;
	  result = a - (a - $abs);
	  // eslint-disable-next-line no-self-compare
	  if (result > MAX32 || result != result) return $sign * Infinity;
	  return $sign * result;
	};

	// `Math.fround` method
	// https://tc39.github.io/ecma262/#sec-math.fround
	_export({ target: 'Math', stat: true }, { fround: mathFround });

	var $hypot = Math.hypot;
	var abs$4 = Math.abs;
	var sqrt$2 = Math.sqrt;

	// Chrome 77 bug
	// https://bugs.chromium.org/p/v8/issues/detail?id=9546
	var BUGGY = !!$hypot && $hypot(Infinity, NaN) !== Infinity;

	// `Math.hypot` method
	// https://tc39.github.io/ecma262/#sec-math.hypot
	_export({ target: 'Math', stat: true, forced: BUGGY }, {
	  hypot: function hypot(value1, value2) { // eslint-disable-line no-unused-vars
	    var sum = 0;
	    var i = 0;
	    var aLen = arguments.length;
	    var larg = 0;
	    var arg, div;
	    while (i < aLen) {
	      arg = abs$4(arguments[i++]);
	      if (larg < arg) {
	        div = larg / arg;
	        sum = sum * div * div + 1;
	        larg = arg;
	      } else if (arg > 0) {
	        div = arg / larg;
	        sum += div * div;
	      } else sum += arg;
	    }
	    return larg === Infinity ? Infinity : larg * sqrt$2(sum);
	  }
	});

	var nativeImul = Math.imul;

	var FORCED$4 = fails(function () {
	  return nativeImul(0xFFFFFFFF, 5) != -5 || nativeImul.length != 2;
	});

	// `Math.imul` method
	// https://tc39.github.io/ecma262/#sec-math.imul
	// some WebKit versions fails with big numbers, some has wrong arity
	_export({ target: 'Math', stat: true, forced: FORCED$4 }, {
	  imul: function imul(x, y) {
	    var UINT16 = 0xFFFF;
	    var xn = +x;
	    var yn = +y;
	    var xl = UINT16 & xn;
	    var yl = UINT16 & yn;
	    return 0 | xl * yl + ((UINT16 & xn >>> 16) * yl + xl * (UINT16 & yn >>> 16) << 16 >>> 0);
	  }
	});

	var log$5 = Math.log;
	var LOG10E = Math.LOG10E;

	// `Math.log10` method
	// https://tc39.github.io/ecma262/#sec-math.log10
	_export({ target: 'Math', stat: true }, {
	  log10: function log10(x) {
	    return log$5(x) * LOG10E;
	  }
	});

	// `Math.log1p` method
	// https://tc39.github.io/ecma262/#sec-math.log1p
	_export({ target: 'Math', stat: true }, { log1p: mathLog1p });

	var log$6 = Math.log;
	var LN2$1 = Math.LN2;

	// `Math.log2` method
	// https://tc39.github.io/ecma262/#sec-math.log2
	_export({ target: 'Math', stat: true }, {
	  log2: function log2(x) {
	    return log$6(x) / LN2$1;
	  }
	});

	// `Math.sign` method
	// https://tc39.github.io/ecma262/#sec-math.sign
	_export({ target: 'Math', stat: true }, {
	  sign: mathSign
	});

	var abs$5 = Math.abs;
	var exp$1 = Math.exp;
	var E$1 = Math.E;

	var FORCED$5 = fails(function () {
	  return Math.sinh(-2e-17) != -2e-17;
	});

	// `Math.sinh` method
	// https://tc39.github.io/ecma262/#sec-math.sinh
	// V8 near Chromium 38 has a problem with very small numbers
	_export({ target: 'Math', stat: true, forced: FORCED$5 }, {
	  sinh: function sinh(x) {
	    return abs$5(x = +x) < 1 ? (mathExpm1(x) - mathExpm1(-x)) / 2 : (exp$1(x - 1) - exp$1(-x - 1)) * (E$1 / 2);
	  }
	});

	var exp$2 = Math.exp;

	// `Math.tanh` method
	// https://tc39.github.io/ecma262/#sec-math.tanh
	_export({ target: 'Math', stat: true }, {
	  tanh: function tanh(x) {
	    var a = mathExpm1(x = +x);
	    var b = mathExpm1(-x);
	    return a == Infinity ? 1 : b == Infinity ? -1 : (a - b) / (exp$2(x) + exp$2(-x));
	  }
	});

	// Math[@@toStringTag] property
	// https://tc39.github.io/ecma262/#sec-math-@@tostringtag
	setToStringTag(Math, 'Math', true);

	var ceil$2 = Math.ceil;
	var floor$2 = Math.floor;

	// `Math.trunc` method
	// https://tc39.github.io/ecma262/#sec-math.trunc
	_export({ target: 'Math', stat: true }, {
	  trunc: function trunc(it) {
	    return (it > 0 ? floor$2 : ceil$2)(it);
	  }
	});

	// a string of all valid unicode whitespaces
	// eslint-disable-next-line max-len
	var whitespaces = '\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\u2028\u2029\uFEFF';

	var whitespace = '[' + whitespaces + ']';
	var ltrim = RegExp('^' + whitespace + whitespace + '*');
	var rtrim = RegExp(whitespace + whitespace + '*$');

	// `String.prototype.{ trim, trimStart, trimEnd, trimLeft, trimRight }` methods implementation
	var createMethod$4 = function (TYPE) {
	  return function ($this) {
	    var string = String(requireObjectCoercible($this));
	    if (TYPE & 1) string = string.replace(ltrim, '');
	    if (TYPE & 2) string = string.replace(rtrim, '');
	    return string;
	  };
	};

	var stringTrim = {
	  // `String.prototype.{ trimLeft, trimStart }` methods
	  // https://tc39.github.io/ecma262/#sec-string.prototype.trimstart
	  start: createMethod$4(1),
	  // `String.prototype.{ trimRight, trimEnd }` methods
	  // https://tc39.github.io/ecma262/#sec-string.prototype.trimend
	  end: createMethod$4(2),
	  // `String.prototype.trim` method
	  // https://tc39.github.io/ecma262/#sec-string.prototype.trim
	  trim: createMethod$4(3)
	};

	var getOwnPropertyNames = objectGetOwnPropertyNames.f;
	var getOwnPropertyDescriptor$2 = objectGetOwnPropertyDescriptor.f;
	var defineProperty$6 = objectDefineProperty.f;
	var trim = stringTrim.trim;

	var NUMBER = 'Number';
	var NativeNumber = global_1[NUMBER];
	var NumberPrototype = NativeNumber.prototype;

	// Opera ~12 has broken Object#toString
	var BROKEN_CLASSOF = classofRaw(objectCreate(NumberPrototype)) == NUMBER;

	// `ToNumber` abstract operation
	// https://tc39.github.io/ecma262/#sec-tonumber
	var toNumber = function (argument) {
	  var it = toPrimitive(argument, false);
	  var first, third, radix, maxCode, digits, length, index, code;
	  if (typeof it == 'string' && it.length > 2) {
	    it = trim(it);
	    first = it.charCodeAt(0);
	    if (first === 43 || first === 45) {
	      third = it.charCodeAt(2);
	      if (third === 88 || third === 120) return NaN; // Number('+0x1') should be NaN, old V8 fix
	    } else if (first === 48) {
	      switch (it.charCodeAt(1)) {
	        case 66: case 98: radix = 2; maxCode = 49; break; // fast equal of /^0b[01]+$/i
	        case 79: case 111: radix = 8; maxCode = 55; break; // fast equal of /^0o[0-7]+$/i
	        default: return +it;
	      }
	      digits = it.slice(2);
	      length = digits.length;
	      for (index = 0; index < length; index++) {
	        code = digits.charCodeAt(index);
	        // parseInt parses a string to a first unavailable symbol
	        // but ToNumber should return NaN if a string contains unavailable symbols
	        if (code < 48 || code > maxCode) return NaN;
	      } return parseInt(digits, radix);
	    }
	  } return +it;
	};

	// `Number` constructor
	// https://tc39.github.io/ecma262/#sec-number-constructor
	if (isForced_1(NUMBER, !NativeNumber(' 0o1') || !NativeNumber('0b1') || NativeNumber('+0x1'))) {
	  var NumberWrapper = function Number(value) {
	    var it = arguments.length < 1 ? 0 : value;
	    var dummy = this;
	    return dummy instanceof NumberWrapper
	      // check on 1..constructor(foo) case
	      && (BROKEN_CLASSOF ? fails(function () { NumberPrototype.valueOf.call(dummy); }) : classofRaw(dummy) != NUMBER)
	        ? inheritIfRequired(new NativeNumber(toNumber(it)), dummy, NumberWrapper) : toNumber(it);
	  };
	  for (var keys$1 = descriptors ? getOwnPropertyNames(NativeNumber) : (
	    // ES3:
	    'MAX_VALUE,MIN_VALUE,NaN,NEGATIVE_INFINITY,POSITIVE_INFINITY,' +
	    // ES2015 (in case, if modules with ES2015 Number statics required before):
	    'EPSILON,isFinite,isInteger,isNaN,isSafeInteger,MAX_SAFE_INTEGER,' +
	    'MIN_SAFE_INTEGER,parseFloat,parseInt,isInteger'
	  ).split(','), j = 0, key; keys$1.length > j; j++) {
	    if (has(NativeNumber, key = keys$1[j]) && !has(NumberWrapper, key)) {
	      defineProperty$6(NumberWrapper, key, getOwnPropertyDescriptor$2(NativeNumber, key));
	    }
	  }
	  NumberWrapper.prototype = NumberPrototype;
	  NumberPrototype.constructor = NumberWrapper;
	  redefine(global_1, NUMBER, NumberWrapper);
	}

	// `Number.EPSILON` constant
	// https://tc39.github.io/ecma262/#sec-number.epsilon
	_export({ target: 'Number', stat: true }, {
	  EPSILON: Math.pow(2, -52)
	});

	var globalIsFinite = global_1.isFinite;

	// `Number.isFinite` method
	// https://tc39.github.io/ecma262/#sec-number.isfinite
	var numberIsFinite = Number.isFinite || function isFinite(it) {
	  return typeof it == 'number' && globalIsFinite(it);
	};

	// `Number.isFinite` method
	// https://tc39.github.io/ecma262/#sec-number.isfinite
	_export({ target: 'Number', stat: true }, { isFinite: numberIsFinite });

	var floor$3 = Math.floor;

	// `Number.isInteger` method implementation
	// https://tc39.github.io/ecma262/#sec-number.isinteger
	var isInteger = function isInteger(it) {
	  return !isObject(it) && isFinite(it) && floor$3(it) === it;
	};

	// `Number.isInteger` method
	// https://tc39.github.io/ecma262/#sec-number.isinteger
	_export({ target: 'Number', stat: true }, {
	  isInteger: isInteger
	});

	// `Number.isNaN` method
	// https://tc39.github.io/ecma262/#sec-number.isnan
	_export({ target: 'Number', stat: true }, {
	  isNaN: function isNaN(number) {
	    // eslint-disable-next-line no-self-compare
	    return number != number;
	  }
	});

	var abs$6 = Math.abs;

	// `Number.isSafeInteger` method
	// https://tc39.github.io/ecma262/#sec-number.issafeinteger
	_export({ target: 'Number', stat: true }, {
	  isSafeInteger: function isSafeInteger(number) {
	    return isInteger(number) && abs$6(number) <= 0x1FFFFFFFFFFFFF;
	  }
	});

	// `Number.MAX_SAFE_INTEGER` constant
	// https://tc39.github.io/ecma262/#sec-number.max_safe_integer
	_export({ target: 'Number', stat: true }, {
	  MAX_SAFE_INTEGER: 0x1FFFFFFFFFFFFF
	});

	// `Number.MIN_SAFE_INTEGER` constant
	// https://tc39.github.io/ecma262/#sec-number.min_safe_integer
	_export({ target: 'Number', stat: true }, {
	  MIN_SAFE_INTEGER: -0x1FFFFFFFFFFFFF
	});

	var trim$1 = stringTrim.trim;


	var nativeParseFloat = global_1.parseFloat;
	var FORCED$6 = 1 / nativeParseFloat(whitespaces + '-0') !== -Infinity;

	// `parseFloat` method
	// https://tc39.github.io/ecma262/#sec-parsefloat-string
	var _parseFloat = FORCED$6 ? function parseFloat(string) {
	  var trimmedString = trim$1(String(string));
	  var result = nativeParseFloat(trimmedString);
	  return result === 0 && trimmedString.charAt(0) == '-' ? -0 : result;
	} : nativeParseFloat;

	// `Number.parseFloat` method
	// https://tc39.github.io/ecma262/#sec-number.parseFloat
	_export({ target: 'Number', stat: true, forced: Number.parseFloat != _parseFloat }, {
	  parseFloat: _parseFloat
	});

	var trim$2 = stringTrim.trim;


	var nativeParseInt = global_1.parseInt;
	var hex = /^[+-]?0[Xx]/;
	var FORCED$7 = nativeParseInt(whitespaces + '08') !== 8 || nativeParseInt(whitespaces + '0x16') !== 22;

	// `parseInt` method
	// https://tc39.github.io/ecma262/#sec-parseint-string-radix
	var _parseInt = FORCED$7 ? function parseInt(string, radix) {
	  var S = trim$2(String(string));
	  return nativeParseInt(S, (radix >>> 0) || (hex.test(S) ? 16 : 10));
	} : nativeParseInt;

	// `Number.parseInt` method
	// https://tc39.github.io/ecma262/#sec-number.parseint
	_export({ target: 'Number', stat: true, forced: Number.parseInt != _parseInt }, {
	  parseInt: _parseInt
	});

	// `thisNumberValue` abstract operation
	// https://tc39.github.io/ecma262/#sec-thisnumbervalue
	var thisNumberValue = function (value) {
	  if (typeof value != 'number' && classofRaw(value) != 'Number') {
	    throw TypeError('Incorrect invocation');
	  }
	  return +value;
	};

	var nativeToFixed = 1.0.toFixed;
	var floor$4 = Math.floor;

	var pow$2 = function (x, n, acc) {
	  return n === 0 ? acc : n % 2 === 1 ? pow$2(x, n - 1, acc * x) : pow$2(x * x, n / 2, acc);
	};

	var log$7 = function (x) {
	  var n = 0;
	  var x2 = x;
	  while (x2 >= 4096) {
	    n += 12;
	    x2 /= 4096;
	  }
	  while (x2 >= 2) {
	    n += 1;
	    x2 /= 2;
	  } return n;
	};

	var FORCED$8 = nativeToFixed && (
	  0.00008.toFixed(3) !== '0.000' ||
	  0.9.toFixed(0) !== '1' ||
	  1.255.toFixed(2) !== '1.25' ||
	  1000000000000000128.0.toFixed(0) !== '1000000000000000128'
	) || !fails(function () {
	  // V8 ~ Android 4.3-
	  nativeToFixed.call({});
	});

	// `Number.prototype.toFixed` method
	// https://tc39.github.io/ecma262/#sec-number.prototype.tofixed
	_export({ target: 'Number', proto: true, forced: FORCED$8 }, {
	  // eslint-disable-next-line max-statements
	  toFixed: function toFixed(fractionDigits) {
	    var number = thisNumberValue(this);
	    var fractDigits = toInteger(fractionDigits);
	    var data = [0, 0, 0, 0, 0, 0];
	    var sign = '';
	    var result = '0';
	    var e, z, j, k;

	    var multiply = function (n, c) {
	      var index = -1;
	      var c2 = c;
	      while (++index < 6) {
	        c2 += n * data[index];
	        data[index] = c2 % 1e7;
	        c2 = floor$4(c2 / 1e7);
	      }
	    };

	    var divide = function (n) {
	      var index = 6;
	      var c = 0;
	      while (--index >= 0) {
	        c += data[index];
	        data[index] = floor$4(c / n);
	        c = (c % n) * 1e7;
	      }
	    };

	    var dataToString = function () {
	      var index = 6;
	      var s = '';
	      while (--index >= 0) {
	        if (s !== '' || index === 0 || data[index] !== 0) {
	          var t = String(data[index]);
	          s = s === '' ? t : s + stringRepeat.call('0', 7 - t.length) + t;
	        }
	      } return s;
	    };

	    if (fractDigits < 0 || fractDigits > 20) throw RangeError('Incorrect fraction digits');
	    // eslint-disable-next-line no-self-compare
	    if (number != number) return 'NaN';
	    if (number <= -1e21 || number >= 1e21) return String(number);
	    if (number < 0) {
	      sign = '-';
	      number = -number;
	    }
	    if (number > 1e-21) {
	      e = log$7(number * pow$2(2, 69, 1)) - 69;
	      z = e < 0 ? number * pow$2(2, -e, 1) : number / pow$2(2, e, 1);
	      z *= 0x10000000000000;
	      e = 52 - e;
	      if (e > 0) {
	        multiply(0, z);
	        j = fractDigits;
	        while (j >= 7) {
	          multiply(1e7, 0);
	          j -= 7;
	        }
	        multiply(pow$2(10, j, 1), 0);
	        j = e - 1;
	        while (j >= 23) {
	          divide(1 << 23);
	          j -= 23;
	        }
	        divide(1 << j);
	        multiply(1, 1);
	        divide(2);
	        result = dataToString();
	      } else {
	        multiply(0, z);
	        multiply(1 << -e, 0);
	        result = dataToString() + stringRepeat.call('0', fractDigits);
	      }
	    }
	    if (fractDigits > 0) {
	      k = result.length;
	      result = sign + (k <= fractDigits
	        ? '0.' + stringRepeat.call('0', fractDigits - k) + result
	        : result.slice(0, k - fractDigits) + '.' + result.slice(k - fractDigits));
	    } else {
	      result = sign + result;
	    } return result;
	  }
	});

	var nativeToPrecision = 1.0.toPrecision;

	var FORCED$9 = fails(function () {
	  // IE7-
	  return nativeToPrecision.call(1, undefined) !== '1';
	}) || !fails(function () {
	  // V8 ~ Android 4.3-
	  nativeToPrecision.call({});
	});

	// `Number.prototype.toPrecision` method
	// https://tc39.github.io/ecma262/#sec-number.prototype.toprecision
	_export({ target: 'Number', proto: true, forced: FORCED$9 }, {
	  toPrecision: function toPrecision(precision) {
	    return precision === undefined
	      ? nativeToPrecision.call(thisNumberValue(this))
	      : nativeToPrecision.call(thisNumberValue(this), precision);
	  }
	});

	var nativeAssign = Object.assign;

	// `Object.assign` method
	// https://tc39.github.io/ecma262/#sec-object.assign
	// should work with symbols and should have deterministic property order (V8 bug)
	var objectAssign = !nativeAssign || fails(function () {
	  var A = {};
	  var B = {};
	  // eslint-disable-next-line no-undef
	  var symbol = Symbol();
	  var alphabet = 'abcdefghijklmnopqrst';
	  A[symbol] = 7;
	  alphabet.split('').forEach(function (chr) { B[chr] = chr; });
	  return nativeAssign({}, A)[symbol] != 7 || objectKeys(nativeAssign({}, B)).join('') != alphabet;
	}) ? function assign(target, source) { // eslint-disable-line no-unused-vars
	  var T = toObject(target);
	  var argumentsLength = arguments.length;
	  var index = 1;
	  var getOwnPropertySymbols = objectGetOwnPropertySymbols.f;
	  var propertyIsEnumerable = objectPropertyIsEnumerable.f;
	  while (argumentsLength > index) {
	    var S = indexedObject(arguments[index++]);
	    var keys = getOwnPropertySymbols ? objectKeys(S).concat(getOwnPropertySymbols(S)) : objectKeys(S);
	    var length = keys.length;
	    var j = 0;
	    var key;
	    while (length > j) {
	      key = keys[j++];
	      if (!descriptors || propertyIsEnumerable.call(S, key)) T[key] = S[key];
	    }
	  } return T;
	} : nativeAssign;

	// `Object.assign` method
	// https://tc39.github.io/ecma262/#sec-object.assign
	_export({ target: 'Object', stat: true, forced: Object.assign !== objectAssign }, {
	  assign: objectAssign
	});

	// Forced replacement object prototype accessors methods
	var forcedObjectPrototypeAccessorsMethods = !fails(function () {
	  var key = Math.random();
	  // In FF throws only define methods
	  // eslint-disable-next-line no-undef, no-useless-call
	  __defineSetter__.call(null, key, function () { /* empty */ });
	  delete global_1[key];
	});

	// `Object.prototype.__defineGetter__` method
	// https://tc39.github.io/ecma262/#sec-object.prototype.__defineGetter__
	if (descriptors) {
	  _export({ target: 'Object', proto: true, forced: forcedObjectPrototypeAccessorsMethods }, {
	    __defineGetter__: function __defineGetter__(P, getter) {
	      objectDefineProperty.f(toObject(this), P, { get: aFunction$1(getter), enumerable: true, configurable: true });
	    }
	  });
	}

	// `Object.defineProperties` method
	// https://tc39.github.io/ecma262/#sec-object.defineproperties
	_export({ target: 'Object', stat: true, forced: !descriptors, sham: !descriptors }, {
	  defineProperties: objectDefineProperties
	});

	// `Object.defineProperty` method
	// https://tc39.github.io/ecma262/#sec-object.defineproperty
	_export({ target: 'Object', stat: true, forced: !descriptors, sham: !descriptors }, {
	  defineProperty: objectDefineProperty.f
	});

	// `Object.prototype.__defineSetter__` method
	// https://tc39.github.io/ecma262/#sec-object.prototype.__defineSetter__
	if (descriptors) {
	  _export({ target: 'Object', proto: true, forced: forcedObjectPrototypeAccessorsMethods }, {
	    __defineSetter__: function __defineSetter__(P, setter) {
	      objectDefineProperty.f(toObject(this), P, { set: aFunction$1(setter), enumerable: true, configurable: true });
	    }
	  });
	}

	var propertyIsEnumerable = objectPropertyIsEnumerable.f;

	// `Object.{ entries, values }` methods implementation
	var createMethod$5 = function (TO_ENTRIES) {
	  return function (it) {
	    var O = toIndexedObject(it);
	    var keys = objectKeys(O);
	    var length = keys.length;
	    var i = 0;
	    var result = [];
	    var key;
	    while (length > i) {
	      key = keys[i++];
	      if (!descriptors || propertyIsEnumerable.call(O, key)) {
	        result.push(TO_ENTRIES ? [key, O[key]] : O[key]);
	      }
	    }
	    return result;
	  };
	};

	var objectToArray = {
	  // `Object.entries` method
	  // https://tc39.github.io/ecma262/#sec-object.entries
	  entries: createMethod$5(true),
	  // `Object.values` method
	  // https://tc39.github.io/ecma262/#sec-object.values
	  values: createMethod$5(false)
	};

	var $entries = objectToArray.entries;

	// `Object.entries` method
	// https://tc39.github.io/ecma262/#sec-object.entries
	_export({ target: 'Object', stat: true }, {
	  entries: function entries(O) {
	    return $entries(O);
	  }
	});

	var onFreeze = internalMetadata.onFreeze;

	var nativeFreeze = Object.freeze;
	var FAILS_ON_PRIMITIVES = fails(function () { nativeFreeze(1); });

	// `Object.freeze` method
	// https://tc39.github.io/ecma262/#sec-object.freeze
	_export({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES, sham: !freezing }, {
	  freeze: function freeze(it) {
	    return nativeFreeze && isObject(it) ? nativeFreeze(onFreeze(it)) : it;
	  }
	});

	// `Object.fromEntries` method
	// https://github.com/tc39/proposal-object-from-entries
	_export({ target: 'Object', stat: true }, {
	  fromEntries: function fromEntries(iterable) {
	    var obj = {};
	    iterate_1(iterable, function (k, v) {
	      createProperty(obj, k, v);
	    }, undefined, true);
	    return obj;
	  }
	});

	var nativeGetOwnPropertyDescriptor$2 = objectGetOwnPropertyDescriptor.f;


	var FAILS_ON_PRIMITIVES$1 = fails(function () { nativeGetOwnPropertyDescriptor$2(1); });
	var FORCED$a = !descriptors || FAILS_ON_PRIMITIVES$1;

	// `Object.getOwnPropertyDescriptor` method
	// https://tc39.github.io/ecma262/#sec-object.getownpropertydescriptor
	_export({ target: 'Object', stat: true, forced: FORCED$a, sham: !descriptors }, {
	  getOwnPropertyDescriptor: function getOwnPropertyDescriptor(it, key) {
	    return nativeGetOwnPropertyDescriptor$2(toIndexedObject(it), key);
	  }
	});

	// `Object.getOwnPropertyDescriptors` method
	// https://tc39.github.io/ecma262/#sec-object.getownpropertydescriptors
	_export({ target: 'Object', stat: true, sham: !descriptors }, {
	  getOwnPropertyDescriptors: function getOwnPropertyDescriptors(object) {
	    var O = toIndexedObject(object);
	    var getOwnPropertyDescriptor = objectGetOwnPropertyDescriptor.f;
	    var keys = ownKeys(O);
	    var result = {};
	    var index = 0;
	    var key, descriptor;
	    while (keys.length > index) {
	      descriptor = getOwnPropertyDescriptor(O, key = keys[index++]);
	      if (descriptor !== undefined) createProperty(result, key, descriptor);
	    }
	    return result;
	  }
	});

	var nativeGetOwnPropertyNames$2 = objectGetOwnPropertyNamesExternal.f;

	var FAILS_ON_PRIMITIVES$2 = fails(function () { return !Object.getOwnPropertyNames(1); });

	// `Object.getOwnPropertyNames` method
	// https://tc39.github.io/ecma262/#sec-object.getownpropertynames
	_export({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES$2 }, {
	  getOwnPropertyNames: nativeGetOwnPropertyNames$2
	});

	var FAILS_ON_PRIMITIVES$3 = fails(function () { objectGetPrototypeOf(1); });

	// `Object.getPrototypeOf` method
	// https://tc39.github.io/ecma262/#sec-object.getprototypeof
	_export({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES$3, sham: !correctPrototypeGetter }, {
	  getPrototypeOf: function getPrototypeOf(it) {
	    return objectGetPrototypeOf(toObject(it));
	  }
	});

	// `SameValue` abstract operation
	// https://tc39.github.io/ecma262/#sec-samevalue
	var sameValue = Object.is || function is(x, y) {
	  // eslint-disable-next-line no-self-compare
	  return x === y ? x !== 0 || 1 / x === 1 / y : x != x && y != y;
	};

	// `Object.is` method
	// https://tc39.github.io/ecma262/#sec-object.is
	_export({ target: 'Object', stat: true }, {
	  is: sameValue
	});

	var nativeIsExtensible = Object.isExtensible;
	var FAILS_ON_PRIMITIVES$4 = fails(function () { });

	// `Object.isExtensible` method
	// https://tc39.github.io/ecma262/#sec-object.isextensible
	_export({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES$4 }, {
	  isExtensible: function isExtensible(it) {
	    return isObject(it) ? nativeIsExtensible ? nativeIsExtensible(it) : true : false;
	  }
	});

	var nativeIsFrozen = Object.isFrozen;
	var FAILS_ON_PRIMITIVES$5 = fails(function () { });

	// `Object.isFrozen` method
	// https://tc39.github.io/ecma262/#sec-object.isfrozen
	_export({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES$5 }, {
	  isFrozen: function isFrozen(it) {
	    return isObject(it) ? nativeIsFrozen ? nativeIsFrozen(it) : false : true;
	  }
	});

	var nativeIsSealed = Object.isSealed;
	var FAILS_ON_PRIMITIVES$6 = fails(function () { });

	// `Object.isSealed` method
	// https://tc39.github.io/ecma262/#sec-object.issealed
	_export({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES$6 }, {
	  isSealed: function isSealed(it) {
	    return isObject(it) ? nativeIsSealed ? nativeIsSealed(it) : false : true;
	  }
	});

	var FAILS_ON_PRIMITIVES$7 = fails(function () { objectKeys(1); });

	// `Object.keys` method
	// https://tc39.github.io/ecma262/#sec-object.keys
	_export({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES$7 }, {
	  keys: function keys(it) {
	    return objectKeys(toObject(it));
	  }
	});

	var getOwnPropertyDescriptor$3 = objectGetOwnPropertyDescriptor.f;

	// `Object.prototype.__lookupGetter__` method
	// https://tc39.github.io/ecma262/#sec-object.prototype.__lookupGetter__
	if (descriptors) {
	  _export({ target: 'Object', proto: true, forced: forcedObjectPrototypeAccessorsMethods }, {
	    __lookupGetter__: function __lookupGetter__(P) {
	      var O = toObject(this);
	      var key = toPrimitive(P, true);
	      var desc;
	      do {
	        if (desc = getOwnPropertyDescriptor$3(O, key)) return desc.get;
	      } while (O = objectGetPrototypeOf(O));
	    }
	  });
	}

	var getOwnPropertyDescriptor$4 = objectGetOwnPropertyDescriptor.f;

	// `Object.prototype.__lookupSetter__` method
	// https://tc39.github.io/ecma262/#sec-object.prototype.__lookupSetter__
	if (descriptors) {
	  _export({ target: 'Object', proto: true, forced: forcedObjectPrototypeAccessorsMethods }, {
	    __lookupSetter__: function __lookupSetter__(P) {
	      var O = toObject(this);
	      var key = toPrimitive(P, true);
	      var desc;
	      do {
	        if (desc = getOwnPropertyDescriptor$4(O, key)) return desc.set;
	      } while (O = objectGetPrototypeOf(O));
	    }
	  });
	}

	var onFreeze$1 = internalMetadata.onFreeze;



	var nativePreventExtensions = Object.preventExtensions;
	var FAILS_ON_PRIMITIVES$8 = fails(function () { nativePreventExtensions(1); });

	// `Object.preventExtensions` method
	// https://tc39.github.io/ecma262/#sec-object.preventextensions
	_export({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES$8, sham: !freezing }, {
	  preventExtensions: function preventExtensions(it) {
	    return nativePreventExtensions && isObject(it) ? nativePreventExtensions(onFreeze$1(it)) : it;
	  }
	});

	var onFreeze$2 = internalMetadata.onFreeze;



	var nativeSeal = Object.seal;
	var FAILS_ON_PRIMITIVES$9 = fails(function () { nativeSeal(1); });

	// `Object.seal` method
	// https://tc39.github.io/ecma262/#sec-object.seal
	_export({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES$9, sham: !freezing }, {
	  seal: function seal(it) {
	    return nativeSeal && isObject(it) ? nativeSeal(onFreeze$2(it)) : it;
	  }
	});

	// `Object.setPrototypeOf` method
	// https://tc39.github.io/ecma262/#sec-object.setprototypeof
	_export({ target: 'Object', stat: true }, {
	  setPrototypeOf: objectSetPrototypeOf
	});

	var TO_STRING_TAG$3 = wellKnownSymbol('toStringTag');
	var test$2 = {};

	test$2[TO_STRING_TAG$3] = 'z';

	// `Object.prototype.toString` method implementation
	// https://tc39.github.io/ecma262/#sec-object.prototype.tostring
	var objectToString = String(test$2) !== '[object z]' ? function toString() {
	  return '[object ' + classof(this) + ']';
	} : test$2.toString;

	var ObjectPrototype$3 = Object.prototype;

	// `Object.prototype.toString` method
	// https://tc39.github.io/ecma262/#sec-object.prototype.tostring
	if (objectToString !== ObjectPrototype$3.toString) {
	  redefine(ObjectPrototype$3, 'toString', objectToString, { unsafe: true });
	}

	var $values = objectToArray.values;

	// `Object.values` method
	// https://tc39.github.io/ecma262/#sec-object.values
	_export({ target: 'Object', stat: true }, {
	  values: function values(O) {
	    return $values(O);
	  }
	});

	// `parseFloat` method
	// https://tc39.github.io/ecma262/#sec-parsefloat-string
	_export({ global: true, forced: parseFloat != _parseFloat }, {
	  parseFloat: _parseFloat
	});

	// `parseInt` method
	// https://tc39.github.io/ecma262/#sec-parseint-string-radix
	_export({ global: true, forced: parseInt != _parseInt }, {
	  parseInt: _parseInt
	});

	var nativePromiseConstructor = global_1.Promise;

	var location = global_1.location;
	var set$1 = global_1.setImmediate;
	var clear = global_1.clearImmediate;
	var process = global_1.process;
	var MessageChannel = global_1.MessageChannel;
	var Dispatch = global_1.Dispatch;
	var counter = 0;
	var queue = {};
	var ONREADYSTATECHANGE = 'onreadystatechange';
	var defer, channel, port;

	var run = function (id) {
	  // eslint-disable-next-line no-prototype-builtins
	  if (queue.hasOwnProperty(id)) {
	    var fn = queue[id];
	    delete queue[id];
	    fn();
	  }
	};

	var runner = function (id) {
	  return function () {
	    run(id);
	  };
	};

	var listener = function (event) {
	  run(event.data);
	};

	var post = function (id) {
	  // old engines have not location.origin
	  global_1.postMessage(id + '', location.protocol + '//' + location.host);
	};

	// Node.js 0.9+ & IE10+ has setImmediate, otherwise:
	if (!set$1 || !clear) {
	  set$1 = function setImmediate(fn) {
	    var args = [];
	    var i = 1;
	    while (arguments.length > i) args.push(arguments[i++]);
	    queue[++counter] = function () {
	      // eslint-disable-next-line no-new-func
	      (typeof fn == 'function' ? fn : Function(fn)).apply(undefined, args);
	    };
	    defer(counter);
	    return counter;
	  };
	  clear = function clearImmediate(id) {
	    delete queue[id];
	  };
	  // Node.js 0.8-
	  if (classofRaw(process) == 'process') {
	    defer = function (id) {
	      process.nextTick(runner(id));
	    };
	  // Sphere (JS game engine) Dispatch API
	  } else if (Dispatch && Dispatch.now) {
	    defer = function (id) {
	      Dispatch.now(runner(id));
	    };
	  // Browsers with MessageChannel, includes WebWorkers
	  } else if (MessageChannel) {
	    channel = new MessageChannel();
	    port = channel.port2;
	    channel.port1.onmessage = listener;
	    defer = bindContext(port.postMessage, port, 1);
	  // Browsers with postMessage, skip WebWorkers
	  // IE8 has postMessage, but it's sync & typeof its postMessage is 'object'
	  } else if (global_1.addEventListener && typeof postMessage == 'function' && !global_1.importScripts && !fails(post)) {
	    defer = post;
	    global_1.addEventListener('message', listener, false);
	  // IE8-
	  } else if (ONREADYSTATECHANGE in documentCreateElement('script')) {
	    defer = function (id) {
	      html.appendChild(documentCreateElement('script'))[ONREADYSTATECHANGE] = function () {
	        html.removeChild(this);
	        run(id);
	      };
	    };
	  // Rest old browsers
	  } else {
	    defer = function (id) {
	      setTimeout(runner(id), 0);
	    };
	  }
	}

	var task = {
	  set: set$1,
	  clear: clear
	};

	var userAgent = getBuiltIn('navigator', 'userAgent') || '';

	var getOwnPropertyDescriptor$5 = objectGetOwnPropertyDescriptor.f;

	var macrotask = task.set;


	var MutationObserver$1 = global_1.MutationObserver || global_1.WebKitMutationObserver;
	var process$1 = global_1.process;
	var Promise$1 = global_1.Promise;
	var IS_NODE = classofRaw(process$1) == 'process';
	// Node.js 11 shows ExperimentalWarning on getting `queueMicrotask`
	var queueMicrotaskDescriptor = getOwnPropertyDescriptor$5(global_1, 'queueMicrotask');
	var queueMicrotask = queueMicrotaskDescriptor && queueMicrotaskDescriptor.value;

	var flush, head, last, notify, toggle, node, promise, then;

	// modern engines have queueMicrotask method
	if (!queueMicrotask) {
	  flush = function () {
	    var parent, fn;
	    if (IS_NODE && (parent = process$1.domain)) parent.exit();
	    while (head) {
	      fn = head.fn;
	      head = head.next;
	      try {
	        fn();
	      } catch (error) {
	        if (head) notify();
	        else last = undefined;
	        throw error;
	      }
	    } last = undefined;
	    if (parent) parent.enter();
	  };

	  // Node.js
	  if (IS_NODE) {
	    notify = function () {
	      process$1.nextTick(flush);
	    };
	  // browsers with MutationObserver, except iOS - https://github.com/zloirock/core-js/issues/339
	  } else if (MutationObserver$1 && !/(iphone|ipod|ipad).*applewebkit/i.test(userAgent)) {
	    toggle = true;
	    node = document.createTextNode('');
	    new MutationObserver$1(flush).observe(node, { characterData: true }); // eslint-disable-line no-new
	    notify = function () {
	      node.data = toggle = !toggle;
	    };
	  // environments with maybe non-completely correct, but existent Promise
	  } else if (Promise$1 && Promise$1.resolve) {
	    // Promise.resolve without an argument throws an error in LG WebOS 2
	    promise = Promise$1.resolve(undefined);
	    then = promise.then;
	    notify = function () {
	      then.call(promise, flush);
	    };
	  // for other environments - macrotask based on:
	  // - setImmediate
	  // - MessageChannel
	  // - window.postMessag
	  // - onreadystatechange
	  // - setTimeout
	  } else {
	    notify = function () {
	      // strange IE + webpack dev server bug - use .call(global)
	      macrotask.call(global_1, flush);
	    };
	  }
	}

	var microtask = queueMicrotask || function (fn) {
	  var task = { fn: fn, next: undefined };
	  if (last) last.next = task;
	  if (!head) {
	    head = task;
	    notify();
	  } last = task;
	};

	var PromiseCapability = function (C) {
	  var resolve, reject;
	  this.promise = new C(function ($$resolve, $$reject) {
	    if (resolve !== undefined || reject !== undefined) throw TypeError('Bad Promise constructor');
	    resolve = $$resolve;
	    reject = $$reject;
	  });
	  this.resolve = aFunction$1(resolve);
	  this.reject = aFunction$1(reject);
	};

	// 25.4.1.5 NewPromiseCapability(C)
	var f$7 = function (C) {
	  return new PromiseCapability(C);
	};

	var newPromiseCapability = {
		f: f$7
	};

	var promiseResolve = function (C, x) {
	  anObject(C);
	  if (isObject(x) && x.constructor === C) return x;
	  var promiseCapability = newPromiseCapability.f(C);
	  var resolve = promiseCapability.resolve;
	  resolve(x);
	  return promiseCapability.promise;
	};

	var hostReportErrors = function (a, b) {
	  var console = global_1.console;
	  if (console && console.error) {
	    arguments.length === 1 ? console.error(a) : console.error(a, b);
	  }
	};

	var perform = function (exec) {
	  try {
	    return { error: false, value: exec() };
	  } catch (error) {
	    return { error: true, value: error };
	  }
	};

	var task$1 = task.set;










	var SPECIES$5 = wellKnownSymbol('species');
	var PROMISE = 'Promise';
	var getInternalState$2 = internalState.get;
	var setInternalState$3 = internalState.set;
	var getInternalPromiseState = internalState.getterFor(PROMISE);
	var PromiseConstructor = nativePromiseConstructor;
	var TypeError$1 = global_1.TypeError;
	var document$2 = global_1.document;
	var process$2 = global_1.process;
	var $fetch = global_1.fetch;
	var versions = process$2 && process$2.versions;
	var v8 = versions && versions.v8 || '';
	var newPromiseCapability$1 = newPromiseCapability.f;
	var newGenericPromiseCapability = newPromiseCapability$1;
	var IS_NODE$1 = classofRaw(process$2) == 'process';
	var DISPATCH_EVENT = !!(document$2 && document$2.createEvent && global_1.dispatchEvent);
	var UNHANDLED_REJECTION = 'unhandledrejection';
	var REJECTION_HANDLED = 'rejectionhandled';
	var PENDING = 0;
	var FULFILLED = 1;
	var REJECTED = 2;
	var HANDLED = 1;
	var UNHANDLED = 2;
	var Internal, OwnPromiseCapability, PromiseWrapper, nativeThen;

	var FORCED$b = isForced_1(PROMISE, function () {
	  // correct subclassing with @@species support
	  var promise = PromiseConstructor.resolve(1);
	  var empty = function () { /* empty */ };
	  var FakePromise = (promise.constructor = {})[SPECIES$5] = function (exec) {
	    exec(empty, empty);
	  };
	  // unhandled rejections tracking support, NodeJS Promise without it fails @@species test
	  return !((IS_NODE$1 || typeof PromiseRejectionEvent == 'function')
	    && (!isPure || promise['finally'])
	    && promise.then(empty) instanceof FakePromise
	    // v8 6.6 (Node 10 and Chrome 66) have a bug with resolving custom thenables
	    // https://bugs.chromium.org/p/chromium/issues/detail?id=830565
	    // we can't detect it synchronously, so just check versions
	    && v8.indexOf('6.6') !== 0
	    && userAgent.indexOf('Chrome/66') === -1);
	});

	var INCORRECT_ITERATION$1 = FORCED$b || !checkCorrectnessOfIteration(function (iterable) {
	  PromiseConstructor.all(iterable)['catch'](function () { /* empty */ });
	});

	// helpers
	var isThenable = function (it) {
	  var then;
	  return isObject(it) && typeof (then = it.then) == 'function' ? then : false;
	};

	var notify$1 = function (promise, state, isReject) {
	  if (state.notified) return;
	  state.notified = true;
	  var chain = state.reactions;
	  microtask(function () {
	    var value = state.value;
	    var ok = state.state == FULFILLED;
	    var index = 0;
	    // variable length - can't use forEach
	    while (chain.length > index) {
	      var reaction = chain[index++];
	      var handler = ok ? reaction.ok : reaction.fail;
	      var resolve = reaction.resolve;
	      var reject = reaction.reject;
	      var domain = reaction.domain;
	      var result, then, exited;
	      try {
	        if (handler) {
	          if (!ok) {
	            if (state.rejection === UNHANDLED) onHandleUnhandled(promise, state);
	            state.rejection = HANDLED;
	          }
	          if (handler === true) result = value;
	          else {
	            if (domain) domain.enter();
	            result = handler(value); // can throw
	            if (domain) {
	              domain.exit();
	              exited = true;
	            }
	          }
	          if (result === reaction.promise) {
	            reject(TypeError$1('Promise-chain cycle'));
	          } else if (then = isThenable(result)) {
	            then.call(result, resolve, reject);
	          } else resolve(result);
	        } else reject(value);
	      } catch (error) {
	        if (domain && !exited) domain.exit();
	        reject(error);
	      }
	    }
	    state.reactions = [];
	    state.notified = false;
	    if (isReject && !state.rejection) onUnhandled(promise, state);
	  });
	};

	var dispatchEvent = function (name, promise, reason) {
	  var event, handler;
	  if (DISPATCH_EVENT) {
	    event = document$2.createEvent('Event');
	    event.promise = promise;
	    event.reason = reason;
	    event.initEvent(name, false, true);
	    global_1.dispatchEvent(event);
	  } else event = { promise: promise, reason: reason };
	  if (handler = global_1['on' + name]) handler(event);
	  else if (name === UNHANDLED_REJECTION) hostReportErrors('Unhandled promise rejection', reason);
	};

	var onUnhandled = function (promise, state) {
	  task$1.call(global_1, function () {
	    var value = state.value;
	    var IS_UNHANDLED = isUnhandled(state);
	    var result;
	    if (IS_UNHANDLED) {
	      result = perform(function () {
	        if (IS_NODE$1) {
	          process$2.emit('unhandledRejection', value, promise);
	        } else dispatchEvent(UNHANDLED_REJECTION, promise, value);
	      });
	      // Browsers should not trigger `rejectionHandled` event if it was handled here, NodeJS - should
	      state.rejection = IS_NODE$1 || isUnhandled(state) ? UNHANDLED : HANDLED;
	      if (result.error) throw result.value;
	    }
	  });
	};

	var isUnhandled = function (state) {
	  return state.rejection !== HANDLED && !state.parent;
	};

	var onHandleUnhandled = function (promise, state) {
	  task$1.call(global_1, function () {
	    if (IS_NODE$1) {
	      process$2.emit('rejectionHandled', promise);
	    } else dispatchEvent(REJECTION_HANDLED, promise, state.value);
	  });
	};

	var bind = function (fn, promise, state, unwrap) {
	  return function (value) {
	    fn(promise, state, value, unwrap);
	  };
	};

	var internalReject = function (promise, state, value, unwrap) {
	  if (state.done) return;
	  state.done = true;
	  if (unwrap) state = unwrap;
	  state.value = value;
	  state.state = REJECTED;
	  notify$1(promise, state, true);
	};

	var internalResolve = function (promise, state, value, unwrap) {
	  if (state.done) return;
	  state.done = true;
	  if (unwrap) state = unwrap;
	  try {
	    if (promise === value) throw TypeError$1("Promise can't be resolved itself");
	    var then = isThenable(value);
	    if (then) {
	      microtask(function () {
	        var wrapper = { done: false };
	        try {
	          then.call(value,
	            bind(internalResolve, promise, wrapper, state),
	            bind(internalReject, promise, wrapper, state)
	          );
	        } catch (error) {
	          internalReject(promise, wrapper, error, state);
	        }
	      });
	    } else {
	      state.value = value;
	      state.state = FULFILLED;
	      notify$1(promise, state, false);
	    }
	  } catch (error) {
	    internalReject(promise, { done: false }, error, state);
	  }
	};

	// constructor polyfill
	if (FORCED$b) {
	  // 25.4.3.1 Promise(executor)
	  PromiseConstructor = function Promise(executor) {
	    anInstance(this, PromiseConstructor, PROMISE);
	    aFunction$1(executor);
	    Internal.call(this);
	    var state = getInternalState$2(this);
	    try {
	      executor(bind(internalResolve, this, state), bind(internalReject, this, state));
	    } catch (error) {
	      internalReject(this, state, error);
	    }
	  };
	  // eslint-disable-next-line no-unused-vars
	  Internal = function Promise(executor) {
	    setInternalState$3(this, {
	      type: PROMISE,
	      done: false,
	      notified: false,
	      parent: false,
	      reactions: [],
	      rejection: false,
	      state: PENDING,
	      value: undefined
	    });
	  };
	  Internal.prototype = redefineAll(PromiseConstructor.prototype, {
	    // `Promise.prototype.then` method
	    // https://tc39.github.io/ecma262/#sec-promise.prototype.then
	    then: function then(onFulfilled, onRejected) {
	      var state = getInternalPromiseState(this);
	      var reaction = newPromiseCapability$1(speciesConstructor(this, PromiseConstructor));
	      reaction.ok = typeof onFulfilled == 'function' ? onFulfilled : true;
	      reaction.fail = typeof onRejected == 'function' && onRejected;
	      reaction.domain = IS_NODE$1 ? process$2.domain : undefined;
	      state.parent = true;
	      state.reactions.push(reaction);
	      if (state.state != PENDING) notify$1(this, state, false);
	      return reaction.promise;
	    },
	    // `Promise.prototype.catch` method
	    // https://tc39.github.io/ecma262/#sec-promise.prototype.catch
	    'catch': function (onRejected) {
	      return this.then(undefined, onRejected);
	    }
	  });
	  OwnPromiseCapability = function () {
	    var promise = new Internal();
	    var state = getInternalState$2(promise);
	    this.promise = promise;
	    this.resolve = bind(internalResolve, promise, state);
	    this.reject = bind(internalReject, promise, state);
	  };
	  newPromiseCapability.f = newPromiseCapability$1 = function (C) {
	    return C === PromiseConstructor || C === PromiseWrapper
	      ? new OwnPromiseCapability(C)
	      : newGenericPromiseCapability(C);
	  };

	  if (typeof nativePromiseConstructor == 'function') {
	    nativeThen = nativePromiseConstructor.prototype.then;

	    // wrap native Promise#then for native async functions
	    redefine(nativePromiseConstructor.prototype, 'then', function then(onFulfilled, onRejected) {
	      var that = this;
	      return new PromiseConstructor(function (resolve, reject) {
	        nativeThen.call(that, resolve, reject);
	      }).then(onFulfilled, onRejected);
	    });

	    // wrap fetch result
	    if (typeof $fetch == 'function') _export({ global: true, enumerable: true, forced: true }, {
	      // eslint-disable-next-line no-unused-vars
	      fetch: function fetch(input) {
	        return promiseResolve(PromiseConstructor, $fetch.apply(global_1, arguments));
	      }
	    });
	  }
	}

	_export({ global: true, wrap: true, forced: FORCED$b }, {
	  Promise: PromiseConstructor
	});

	setToStringTag(PromiseConstructor, PROMISE, false, true);
	setSpecies(PROMISE);

	PromiseWrapper = path[PROMISE];

	// statics
	_export({ target: PROMISE, stat: true, forced: FORCED$b }, {
	  // `Promise.reject` method
	  // https://tc39.github.io/ecma262/#sec-promise.reject
	  reject: function reject(r) {
	    var capability = newPromiseCapability$1(this);
	    capability.reject.call(undefined, r);
	    return capability.promise;
	  }
	});

	_export({ target: PROMISE, stat: true, forced: FORCED$b }, {
	  // `Promise.resolve` method
	  // https://tc39.github.io/ecma262/#sec-promise.resolve
	  resolve: function resolve(x) {
	    return promiseResolve(this, x);
	  }
	});

	_export({ target: PROMISE, stat: true, forced: INCORRECT_ITERATION$1 }, {
	  // `Promise.all` method
	  // https://tc39.github.io/ecma262/#sec-promise.all
	  all: function all(iterable) {
	    var C = this;
	    var capability = newPromiseCapability$1(C);
	    var resolve = capability.resolve;
	    var reject = capability.reject;
	    var result = perform(function () {
	      var $promiseResolve = aFunction$1(C.resolve);
	      var values = [];
	      var counter = 0;
	      var remaining = 1;
	      iterate_1(iterable, function (promise) {
	        var index = counter++;
	        var alreadyCalled = false;
	        values.push(undefined);
	        remaining++;
	        $promiseResolve.call(C, promise).then(function (value) {
	          if (alreadyCalled) return;
	          alreadyCalled = true;
	          values[index] = value;
	          --remaining || resolve(values);
	        }, reject);
	      });
	      --remaining || resolve(values);
	    });
	    if (result.error) reject(result.value);
	    return capability.promise;
	  },
	  // `Promise.race` method
	  // https://tc39.github.io/ecma262/#sec-promise.race
	  race: function race(iterable) {
	    var C = this;
	    var capability = newPromiseCapability$1(C);
	    var reject = capability.reject;
	    var result = perform(function () {
	      var $promiseResolve = aFunction$1(C.resolve);
	      iterate_1(iterable, function (promise) {
	        $promiseResolve.call(C, promise).then(capability.resolve, reject);
	      });
	    });
	    if (result.error) reject(result.value);
	    return capability.promise;
	  }
	});

	// `Promise.prototype.finally` method
	// https://tc39.github.io/ecma262/#sec-promise.prototype.finally
	_export({ target: 'Promise', proto: true, real: true }, {
	  'finally': function (onFinally) {
	    var C = speciesConstructor(this, getBuiltIn('Promise'));
	    var isFunction = typeof onFinally == 'function';
	    return this.then(
	      isFunction ? function (x) {
	        return promiseResolve(C, onFinally()).then(function () { return x; });
	      } : onFinally,
	      isFunction ? function (e) {
	        return promiseResolve(C, onFinally()).then(function () { throw e; });
	      } : onFinally
	    );
	  }
	});

	// patch native Promise.prototype for native async functions
	if (typeof nativePromiseConstructor == 'function' && !nativePromiseConstructor.prototype['finally']) {
	  redefine(nativePromiseConstructor.prototype, 'finally', getBuiltIn('Promise').prototype['finally']);
	}

	var nativeApply = getBuiltIn('Reflect', 'apply');
	var functionApply = Function.apply;

	// MS Edge argumentsList argument is optional
	var OPTIONAL_ARGUMENTS_LIST = !fails(function () {
	  nativeApply(function () { /* empty */ });
	});

	// `Reflect.apply` method
	// https://tc39.github.io/ecma262/#sec-reflect.apply
	_export({ target: 'Reflect', stat: true, forced: OPTIONAL_ARGUMENTS_LIST }, {
	  apply: function apply(target, thisArgument, argumentsList) {
	    aFunction$1(target);
	    anObject(argumentsList);
	    return nativeApply
	      ? nativeApply(target, thisArgument, argumentsList)
	      : functionApply.call(target, thisArgument, argumentsList);
	  }
	});

	var slice = [].slice;
	var factories = {};

	var construct = function (C, argsLength, args) {
	  if (!(argsLength in factories)) {
	    for (var list = [], i = 0; i < argsLength; i++) list[i] = 'a[' + i + ']';
	    // eslint-disable-next-line no-new-func
	    factories[argsLength] = Function('C,a', 'return new C(' + list.join(',') + ')');
	  } return factories[argsLength](C, args);
	};

	// `Function.prototype.bind` method implementation
	// https://tc39.github.io/ecma262/#sec-function.prototype.bind
	var functionBind = Function.bind || function bind(that /* , ...args */) {
	  var fn = aFunction$1(this);
	  var partArgs = slice.call(arguments, 1);
	  var boundFunction = function bound(/* args... */) {
	    var args = partArgs.concat(slice.call(arguments));
	    return this instanceof boundFunction ? construct(fn, args.length, args) : fn.apply(that, args);
	  };
	  if (isObject(fn.prototype)) boundFunction.prototype = fn.prototype;
	  return boundFunction;
	};

	var nativeConstruct = getBuiltIn('Reflect', 'construct');

	// `Reflect.construct` method
	// https://tc39.github.io/ecma262/#sec-reflect.construct
	// MS Edge supports only 2 arguments and argumentsList argument is optional
	// FF Nightly sets third argument as `new.target`, but does not create `this` from it
	var NEW_TARGET_BUG = fails(function () {
	  function F() { /* empty */ }
	  return !(nativeConstruct(function () { /* empty */ }, [], F) instanceof F);
	});
	var ARGS_BUG = !fails(function () {
	  nativeConstruct(function () { /* empty */ });
	});
	var FORCED$c = NEW_TARGET_BUG || ARGS_BUG;

	_export({ target: 'Reflect', stat: true, forced: FORCED$c, sham: FORCED$c }, {
	  construct: function construct(Target, args /* , newTarget */) {
	    aFunction$1(Target);
	    anObject(args);
	    var newTarget = arguments.length < 3 ? Target : aFunction$1(arguments[2]);
	    if (ARGS_BUG && !NEW_TARGET_BUG) return nativeConstruct(Target, args, newTarget);
	    if (Target == newTarget) {
	      // w/o altered newTarget, optimization for 0-4 arguments
	      switch (args.length) {
	        case 0: return new Target();
	        case 1: return new Target(args[0]);
	        case 2: return new Target(args[0], args[1]);
	        case 3: return new Target(args[0], args[1], args[2]);
	        case 4: return new Target(args[0], args[1], args[2], args[3]);
	      }
	      // w/o altered newTarget, lot of arguments case
	      var $args = [null];
	      $args.push.apply($args, args);
	      return new (functionBind.apply(Target, $args))();
	    }
	    // with altered newTarget, not support built-in constructors
	    var proto = newTarget.prototype;
	    var instance = objectCreate(isObject(proto) ? proto : Object.prototype);
	    var result = Function.apply.call(Target, instance, args);
	    return isObject(result) ? result : instance;
	  }
	});

	// MS Edge has broken Reflect.defineProperty - throwing instead of returning false
	var ERROR_INSTEAD_OF_FALSE = fails(function () {
	  // eslint-disable-next-line no-undef
	  Reflect.defineProperty(objectDefineProperty.f({}, 1, { value: 1 }), 1, { value: 2 });
	});

	// `Reflect.defineProperty` method
	// https://tc39.github.io/ecma262/#sec-reflect.defineproperty
	_export({ target: 'Reflect', stat: true, forced: ERROR_INSTEAD_OF_FALSE, sham: !descriptors }, {
	  defineProperty: function defineProperty(target, propertyKey, attributes) {
	    anObject(target);
	    var key = toPrimitive(propertyKey, true);
	    anObject(attributes);
	    try {
	      objectDefineProperty.f(target, key, attributes);
	      return true;
	    } catch (error) {
	      return false;
	    }
	  }
	});

	var getOwnPropertyDescriptor$6 = objectGetOwnPropertyDescriptor.f;

	// `Reflect.deleteProperty` method
	// https://tc39.github.io/ecma262/#sec-reflect.deleteproperty
	_export({ target: 'Reflect', stat: true }, {
	  deleteProperty: function deleteProperty(target, propertyKey) {
	    var descriptor = getOwnPropertyDescriptor$6(anObject(target), propertyKey);
	    return descriptor && !descriptor.configurable ? false : delete target[propertyKey];
	  }
	});

	// `Reflect.get` method
	// https://tc39.github.io/ecma262/#sec-reflect.get
	function get$1(target, propertyKey /* , receiver */) {
	  var receiver = arguments.length < 3 ? target : arguments[2];
	  var descriptor, prototype;
	  if (anObject(target) === receiver) return target[propertyKey];
	  if (descriptor = objectGetOwnPropertyDescriptor.f(target, propertyKey)) return has(descriptor, 'value')
	    ? descriptor.value
	    : descriptor.get === undefined
	      ? undefined
	      : descriptor.get.call(receiver);
	  if (isObject(prototype = objectGetPrototypeOf(target))) return get$1(prototype, propertyKey, receiver);
	}

	_export({ target: 'Reflect', stat: true }, {
	  get: get$1
	});

	// `Reflect.getOwnPropertyDescriptor` method
	// https://tc39.github.io/ecma262/#sec-reflect.getownpropertydescriptor
	_export({ target: 'Reflect', stat: true, sham: !descriptors }, {
	  getOwnPropertyDescriptor: function getOwnPropertyDescriptor(target, propertyKey) {
	    return objectGetOwnPropertyDescriptor.f(anObject(target), propertyKey);
	  }
	});

	// `Reflect.getPrototypeOf` method
	// https://tc39.github.io/ecma262/#sec-reflect.getprototypeof
	_export({ target: 'Reflect', stat: true, sham: !correctPrototypeGetter }, {
	  getPrototypeOf: function getPrototypeOf(target) {
	    return objectGetPrototypeOf(anObject(target));
	  }
	});

	// `Reflect.has` method
	// https://tc39.github.io/ecma262/#sec-reflect.has
	_export({ target: 'Reflect', stat: true }, {
	  has: function has(target, propertyKey) {
	    return propertyKey in target;
	  }
	});

	var objectIsExtensible = Object.isExtensible;

	// `Reflect.isExtensible` method
	// https://tc39.github.io/ecma262/#sec-reflect.isextensible
	_export({ target: 'Reflect', stat: true }, {
	  isExtensible: function isExtensible(target) {
	    anObject(target);
	    return objectIsExtensible ? objectIsExtensible(target) : true;
	  }
	});

	// `Reflect.ownKeys` method
	// https://tc39.github.io/ecma262/#sec-reflect.ownkeys
	_export({ target: 'Reflect', stat: true }, {
	  ownKeys: ownKeys
	});

	// `Reflect.preventExtensions` method
	// https://tc39.github.io/ecma262/#sec-reflect.preventextensions
	_export({ target: 'Reflect', stat: true, sham: !freezing }, {
	  preventExtensions: function preventExtensions(target) {
	    anObject(target);
	    try {
	      var objectPreventExtensions = getBuiltIn('Object', 'preventExtensions');
	      if (objectPreventExtensions) objectPreventExtensions(target);
	      return true;
	    } catch (error) {
	      return false;
	    }
	  }
	});

	// `Reflect.set` method
	// https://tc39.github.io/ecma262/#sec-reflect.set
	function set$2(target, propertyKey, V /* , receiver */) {
	  var receiver = arguments.length < 4 ? target : arguments[3];
	  var ownDescriptor = objectGetOwnPropertyDescriptor.f(anObject(target), propertyKey);
	  var existingDescriptor, prototype;
	  if (!ownDescriptor) {
	    if (isObject(prototype = objectGetPrototypeOf(target))) {
	      return set$2(prototype, propertyKey, V, receiver);
	    }
	    ownDescriptor = createPropertyDescriptor(0);
	  }
	  if (has(ownDescriptor, 'value')) {
	    if (ownDescriptor.writable === false || !isObject(receiver)) return false;
	    if (existingDescriptor = objectGetOwnPropertyDescriptor.f(receiver, propertyKey)) {
	      if (existingDescriptor.get || existingDescriptor.set || existingDescriptor.writable === false) return false;
	      existingDescriptor.value = V;
	      objectDefineProperty.f(receiver, propertyKey, existingDescriptor);
	    } else objectDefineProperty.f(receiver, propertyKey, createPropertyDescriptor(0, V));
	    return true;
	  }
	  return ownDescriptor.set === undefined ? false : (ownDescriptor.set.call(receiver, V), true);
	}

	_export({ target: 'Reflect', stat: true }, {
	  set: set$2
	});

	// `Reflect.setPrototypeOf` method
	// https://tc39.github.io/ecma262/#sec-reflect.setprototypeof
	if (objectSetPrototypeOf) _export({ target: 'Reflect', stat: true }, {
	  setPrototypeOf: function setPrototypeOf(target, proto) {
	    anObject(target);
	    aPossiblePrototype(proto);
	    try {
	      objectSetPrototypeOf(target, proto);
	      return true;
	    } catch (error) {
	      return false;
	    }
	  }
	});

	var MATCH = wellKnownSymbol('match');

	// `IsRegExp` abstract operation
	// https://tc39.github.io/ecma262/#sec-isregexp
	var isRegexp = function (it) {
	  var isRegExp;
	  return isObject(it) && ((isRegExp = it[MATCH]) !== undefined ? !!isRegExp : classofRaw(it) == 'RegExp');
	};

	// `RegExp.prototype.flags` getter implementation
	// https://tc39.github.io/ecma262/#sec-get-regexp.prototype.flags
	var regexpFlags = function () {
	  var that = anObject(this);
	  var result = '';
	  if (that.global) result += 'g';
	  if (that.ignoreCase) result += 'i';
	  if (that.multiline) result += 'm';
	  if (that.dotAll) result += 's';
	  if (that.unicode) result += 'u';
	  if (that.sticky) result += 'y';
	  return result;
	};

	var defineProperty$7 = objectDefineProperty.f;
	var getOwnPropertyNames$1 = objectGetOwnPropertyNames.f;







	var MATCH$1 = wellKnownSymbol('match');
	var NativeRegExp = global_1.RegExp;
	var RegExpPrototype = NativeRegExp.prototype;
	var re1 = /a/g;
	var re2 = /a/g;

	// "new" should create a new object, old webkit bug
	var CORRECT_NEW = new NativeRegExp(re1) !== re1;

	var FORCED$d = descriptors && isForced_1('RegExp', (!CORRECT_NEW || fails(function () {
	  re2[MATCH$1] = false;
	  // RegExp constructor can alter flags and IsRegExp works correct with @@match
	  return NativeRegExp(re1) != re1 || NativeRegExp(re2) == re2 || NativeRegExp(re1, 'i') != '/a/i';
	})));

	// `RegExp` constructor
	// https://tc39.github.io/ecma262/#sec-regexp-constructor
	if (FORCED$d) {
	  var RegExpWrapper = function RegExp(pattern, flags) {
	    var thisIsRegExp = this instanceof RegExpWrapper;
	    var patternIsRegExp = isRegexp(pattern);
	    var flagsAreUndefined = flags === undefined;
	    return !thisIsRegExp && patternIsRegExp && pattern.constructor === RegExpWrapper && flagsAreUndefined ? pattern
	      : inheritIfRequired(CORRECT_NEW
	        ? new NativeRegExp(patternIsRegExp && !flagsAreUndefined ? pattern.source : pattern, flags)
	        : NativeRegExp((patternIsRegExp = pattern instanceof RegExpWrapper)
	          ? pattern.source
	          : pattern, patternIsRegExp && flagsAreUndefined ? regexpFlags.call(pattern) : flags)
	      , thisIsRegExp ? this : RegExpPrototype, RegExpWrapper);
	  };
	  var proxy = function (key) {
	    key in RegExpWrapper || defineProperty$7(RegExpWrapper, key, {
	      configurable: true,
	      get: function () { return NativeRegExp[key]; },
	      set: function (it) { NativeRegExp[key] = it; }
	    });
	  };
	  var keys$2 = getOwnPropertyNames$1(NativeRegExp);
	  var index = 0;
	  while (keys$2.length > index) proxy(keys$2[index++]);
	  RegExpPrototype.constructor = RegExpWrapper;
	  RegExpWrapper.prototype = RegExpPrototype;
	  redefine(global_1, 'RegExp', RegExpWrapper);
	}

	// https://tc39.github.io/ecma262/#sec-get-regexp-@@species
	setSpecies('RegExp');

	var nativeExec = RegExp.prototype.exec;
	// This always refers to the native implementation, because the
	// String#replace polyfill uses ./fix-regexp-well-known-symbol-logic.js,
	// which loads this file before patching the method.
	var nativeReplace = String.prototype.replace;

	var patchedExec = nativeExec;

	var UPDATES_LAST_INDEX_WRONG = (function () {
	  var re1 = /a/;
	  var re2 = /b*/g;
	  nativeExec.call(re1, 'a');
	  nativeExec.call(re2, 'a');
	  return re1.lastIndex !== 0 || re2.lastIndex !== 0;
	})();

	// nonparticipating capturing group, copied from es5-shim's String#split patch.
	var NPCG_INCLUDED = /()??/.exec('')[1] !== undefined;

	var PATCH = UPDATES_LAST_INDEX_WRONG || NPCG_INCLUDED;

	if (PATCH) {
	  patchedExec = function exec(str) {
	    var re = this;
	    var lastIndex, reCopy, match, i;

	    if (NPCG_INCLUDED) {
	      reCopy = new RegExp('^' + re.source + '$(?!\\s)', regexpFlags.call(re));
	    }
	    if (UPDATES_LAST_INDEX_WRONG) lastIndex = re.lastIndex;

	    match = nativeExec.call(re, str);

	    if (UPDATES_LAST_INDEX_WRONG && match) {
	      re.lastIndex = re.global ? match.index + match[0].length : lastIndex;
	    }
	    if (NPCG_INCLUDED && match && match.length > 1) {
	      // Fix browsers whose `exec` methods don't consistently return `undefined`
	      // for NPCG, like IE8. NOTE: This doesn' work for /(.?)?/
	      nativeReplace.call(match[0], reCopy, function () {
	        for (i = 1; i < arguments.length - 2; i++) {
	          if (arguments[i] === undefined) match[i] = undefined;
	        }
	      });
	    }

	    return match;
	  };
	}

	var regexpExec = patchedExec;

	_export({ target: 'RegExp', proto: true, forced: /./.exec !== regexpExec }, {
	  exec: regexpExec
	});

	// `RegExp.prototype.flags` getter
	// https://tc39.github.io/ecma262/#sec-get-regexp.prototype.flags
	if (descriptors && /./g.flags != 'g') {
	  objectDefineProperty.f(RegExp.prototype, 'flags', {
	    configurable: true,
	    get: regexpFlags
	  });
	}

	var TO_STRING$1 = 'toString';
	var RegExpPrototype$1 = RegExp.prototype;
	var nativeToString = RegExpPrototype$1[TO_STRING$1];

	var NOT_GENERIC = fails(function () { return nativeToString.call({ source: 'a', flags: 'b' }) != '/a/b'; });
	// FF44- RegExp#toString has a wrong name
	var INCORRECT_NAME = nativeToString.name != TO_STRING$1;

	// `RegExp.prototype.toString` method
	// https://tc39.github.io/ecma262/#sec-regexp.prototype.tostring
	if (NOT_GENERIC || INCORRECT_NAME) {
	  redefine(RegExp.prototype, TO_STRING$1, function toString() {
	    var R = anObject(this);
	    var p = String(R.source);
	    var rf = R.flags;
	    var f = String(rf === undefined && R instanceof RegExp && !('flags' in RegExpPrototype$1) ? regexpFlags.call(R) : rf);
	    return '/' + p + '/' + f;
	  }, { unsafe: true });
	}

	// `Set` constructor
	// https://tc39.github.io/ecma262/#sec-set-objects
	var es_set = collection('Set', function (get) {
	  return function Set() { return get(this, arguments.length ? arguments[0] : undefined); };
	}, collectionStrong);

	// `String.prototype.{ codePointAt, at }` methods implementation
	var createMethod$6 = function (CONVERT_TO_STRING) {
	  return function ($this, pos) {
	    var S = String(requireObjectCoercible($this));
	    var position = toInteger(pos);
	    var size = S.length;
	    var first, second;
	    if (position < 0 || position >= size) return CONVERT_TO_STRING ? '' : undefined;
	    first = S.charCodeAt(position);
	    return first < 0xD800 || first > 0xDBFF || position + 1 === size
	      || (second = S.charCodeAt(position + 1)) < 0xDC00 || second > 0xDFFF
	        ? CONVERT_TO_STRING ? S.charAt(position) : first
	        : CONVERT_TO_STRING ? S.slice(position, position + 2) : (first - 0xD800 << 10) + (second - 0xDC00) + 0x10000;
	  };
	};

	var stringMultibyte = {
	  // `String.prototype.codePointAt` method
	  // https://tc39.github.io/ecma262/#sec-string.prototype.codepointat
	  codeAt: createMethod$6(false),
	  // `String.prototype.at` method
	  // https://github.com/mathiasbynens/String.prototype.at
	  charAt: createMethod$6(true)
	};

	var codeAt = stringMultibyte.codeAt;

	// `String.prototype.codePointAt` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.codepointat
	_export({ target: 'String', proto: true }, {
	  codePointAt: function codePointAt(pos) {
	    return codeAt(this, pos);
	  }
	});

	var notARegexp = function (it) {
	  if (isRegexp(it)) {
	    throw TypeError("The method doesn't accept regular expressions");
	  } return it;
	};

	var MATCH$2 = wellKnownSymbol('match');

	var correctIsRegexpLogic = function (METHOD_NAME) {
	  var regexp = /./;
	  try {
	    '/./'[METHOD_NAME](regexp);
	  } catch (e) {
	    try {
	      regexp[MATCH$2] = false;
	      return '/./'[METHOD_NAME](regexp);
	    } catch (f) { /* empty */ }
	  } return false;
	};

	var nativeEndsWith = ''.endsWith;
	var min$5 = Math.min;

	// `String.prototype.endsWith` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.endswith
	_export({ target: 'String', proto: true, forced: !correctIsRegexpLogic('endsWith') }, {
	  endsWith: function endsWith(searchString /* , endPosition = @length */) {
	    var that = String(requireObjectCoercible(this));
	    notARegexp(searchString);
	    var endPosition = arguments.length > 1 ? arguments[1] : undefined;
	    var len = toLength(that.length);
	    var end = endPosition === undefined ? len : min$5(toLength(endPosition), len);
	    var search = String(searchString);
	    return nativeEndsWith
	      ? nativeEndsWith.call(that, search, end)
	      : that.slice(end - search.length, end) === search;
	  }
	});

	var fromCharCode = String.fromCharCode;
	var nativeFromCodePoint = String.fromCodePoint;

	// length should be 1, old FF problem
	var INCORRECT_LENGTH = !!nativeFromCodePoint && nativeFromCodePoint.length != 1;

	// `String.fromCodePoint` method
	// https://tc39.github.io/ecma262/#sec-string.fromcodepoint
	_export({ target: 'String', stat: true, forced: INCORRECT_LENGTH }, {
	  fromCodePoint: function fromCodePoint(x) { // eslint-disable-line no-unused-vars
	    var elements = [];
	    var length = arguments.length;
	    var i = 0;
	    var code;
	    while (length > i) {
	      code = +arguments[i++];
	      if (toAbsoluteIndex(code, 0x10FFFF) !== code) throw RangeError(code + ' is not a valid code point');
	      elements.push(code < 0x10000
	        ? fromCharCode(code)
	        : fromCharCode(((code -= 0x10000) >> 10) + 0xD800, code % 0x400 + 0xDC00)
	      );
	    } return elements.join('');
	  }
	});

	// `String.prototype.includes` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.includes
	_export({ target: 'String', proto: true, forced: !correctIsRegexpLogic('includes') }, {
	  includes: function includes(searchString /* , position = 0 */) {
	    return !!~String(requireObjectCoercible(this))
	      .indexOf(notARegexp(searchString), arguments.length > 1 ? arguments[1] : undefined);
	  }
	});

	var charAt = stringMultibyte.charAt;



	var STRING_ITERATOR = 'String Iterator';
	var setInternalState$4 = internalState.set;
	var getInternalState$3 = internalState.getterFor(STRING_ITERATOR);

	// `String.prototype[@@iterator]` method
	// https://tc39.github.io/ecma262/#sec-string.prototype-@@iterator
	defineIterator(String, 'String', function (iterated) {
	  setInternalState$4(this, {
	    type: STRING_ITERATOR,
	    string: String(iterated),
	    index: 0
	  });
	// `%StringIteratorPrototype%.next` method
	// https://tc39.github.io/ecma262/#sec-%stringiteratorprototype%.next
	}, function next() {
	  var state = getInternalState$3(this);
	  var string = state.string;
	  var index = state.index;
	  var point;
	  if (index >= string.length) return { value: undefined, done: true };
	  point = charAt(string, index);
	  state.index += point.length;
	  return { value: point, done: false };
	});

	var SPECIES$6 = wellKnownSymbol('species');

	var REPLACE_SUPPORTS_NAMED_GROUPS = !fails(function () {
	  // #replace needs built-in support for named groups.
	  // #match works fine because it just return the exec results, even if it has
	  // a "grops" property.
	  var re = /./;
	  re.exec = function () {
	    var result = [];
	    result.groups = { a: '7' };
	    return result;
	  };
	  return ''.replace(re, '$<a>') !== '7';
	});

	// Chrome 51 has a buggy "split" implementation when RegExp#exec !== nativeExec
	// Weex JS has frozen built-in prototypes, so use try / catch wrapper
	var SPLIT_WORKS_WITH_OVERWRITTEN_EXEC = !fails(function () {
	  var re = /(?:)/;
	  var originalExec = re.exec;
	  re.exec = function () { return originalExec.apply(this, arguments); };
	  var result = 'ab'.split(re);
	  return result.length !== 2 || result[0] !== 'a' || result[1] !== 'b';
	});

	var fixRegexpWellKnownSymbolLogic = function (KEY, length, exec, sham) {
	  var SYMBOL = wellKnownSymbol(KEY);

	  var DELEGATES_TO_SYMBOL = !fails(function () {
	    // String methods call symbol-named RegEp methods
	    var O = {};
	    O[SYMBOL] = function () { return 7; };
	    return ''[KEY](O) != 7;
	  });

	  var DELEGATES_TO_EXEC = DELEGATES_TO_SYMBOL && !fails(function () {
	    // Symbol-named RegExp methods call .exec
	    var execCalled = false;
	    var re = /a/;
	    re.exec = function () { execCalled = true; return null; };

	    if (KEY === 'split') {
	      // RegExp[@@split] doesn't call the regex's exec method, but first creates
	      // a new one. We need to return the patched regex when creating the new one.
	      re.constructor = {};
	      re.constructor[SPECIES$6] = function () { return re; };
	    }

	    re[SYMBOL]('');
	    return !execCalled;
	  });

	  if (
	    !DELEGATES_TO_SYMBOL ||
	    !DELEGATES_TO_EXEC ||
	    (KEY === 'replace' && !REPLACE_SUPPORTS_NAMED_GROUPS) ||
	    (KEY === 'split' && !SPLIT_WORKS_WITH_OVERWRITTEN_EXEC)
	  ) {
	    var nativeRegExpMethod = /./[SYMBOL];
	    var methods = exec(SYMBOL, ''[KEY], function (nativeMethod, regexp, str, arg2, forceStringMethod) {
	      if (regexp.exec === regexpExec) {
	        if (DELEGATES_TO_SYMBOL && !forceStringMethod) {
	          // The native String method already delegates to @@method (this
	          // polyfilled function), leasing to infinite recursion.
	          // We avoid it by directly calling the native @@method method.
	          return { done: true, value: nativeRegExpMethod.call(regexp, str, arg2) };
	        }
	        return { done: true, value: nativeMethod.call(str, regexp, arg2) };
	      }
	      return { done: false };
	    });
	    var stringMethod = methods[0];
	    var regexMethod = methods[1];

	    redefine(String.prototype, KEY, stringMethod);
	    redefine(RegExp.prototype, SYMBOL, length == 2
	      // 21.2.5.8 RegExp.prototype[@@replace](string, replaceValue)
	      // 21.2.5.11 RegExp.prototype[@@split](string, limit)
	      ? function (string, arg) { return regexMethod.call(string, this, arg); }
	      // 21.2.5.6 RegExp.prototype[@@match](string)
	      // 21.2.5.9 RegExp.prototype[@@search](string)
	      : function (string) { return regexMethod.call(string, this); }
	    );
	    if (sham) hide(RegExp.prototype[SYMBOL], 'sham', true);
	  }
	};

	var charAt$1 = stringMultibyte.charAt;

	// `AdvanceStringIndex` abstract operation
	// https://tc39.github.io/ecma262/#sec-advancestringindex
	var advanceStringIndex = function (S, index, unicode) {
	  return index + (unicode ? charAt$1(S, index).length : 1);
	};

	// `RegExpExec` abstract operation
	// https://tc39.github.io/ecma262/#sec-regexpexec
	var regexpExecAbstract = function (R, S) {
	  var exec = R.exec;
	  if (typeof exec === 'function') {
	    var result = exec.call(R, S);
	    if (typeof result !== 'object') {
	      throw TypeError('RegExp exec method returned something other than an Object or null');
	    }
	    return result;
	  }

	  if (classofRaw(R) !== 'RegExp') {
	    throw TypeError('RegExp#exec called on incompatible receiver');
	  }

	  return regexpExec.call(R, S);
	};

	// @@match logic
	fixRegexpWellKnownSymbolLogic('match', 1, function (MATCH, nativeMatch, maybeCallNative) {
	  return [
	    // `String.prototype.match` method
	    // https://tc39.github.io/ecma262/#sec-string.prototype.match
	    function match(regexp) {
	      var O = requireObjectCoercible(this);
	      var matcher = regexp == undefined ? undefined : regexp[MATCH];
	      return matcher !== undefined ? matcher.call(regexp, O) : new RegExp(regexp)[MATCH](String(O));
	    },
	    // `RegExp.prototype[@@match]` method
	    // https://tc39.github.io/ecma262/#sec-regexp.prototype-@@match
	    function (regexp) {
	      var res = maybeCallNative(nativeMatch, regexp, this);
	      if (res.done) return res.value;

	      var rx = anObject(regexp);
	      var S = String(this);

	      if (!rx.global) return regexpExecAbstract(rx, S);

	      var fullUnicode = rx.unicode;
	      rx.lastIndex = 0;
	      var A = [];
	      var n = 0;
	      var result;
	      while ((result = regexpExecAbstract(rx, S)) !== null) {
	        var matchStr = String(result[0]);
	        A[n] = matchStr;
	        if (matchStr === '') rx.lastIndex = advanceStringIndex(S, toLength(rx.lastIndex), fullUnicode);
	        n++;
	      }
	      return n === 0 ? null : A;
	    }
	  ];
	});

	// https://github.com/zloirock/core-js/issues/280


	// eslint-disable-next-line unicorn/no-unsafe-regex
	var webkitStringPadBug = /Version\/10\.\d+(\.\d+)?( Mobile\/\w+)? Safari\//.test(userAgent);

	var $padEnd = stringPad.end;


	// `String.prototype.padEnd` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.padend
	_export({ target: 'String', proto: true, forced: webkitStringPadBug }, {
	  padEnd: function padEnd(maxLength /* , fillString = ' ' */) {
	    return $padEnd(this, maxLength, arguments.length > 1 ? arguments[1] : undefined);
	  }
	});

	var $padStart = stringPad.start;


	// `String.prototype.padStart` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.padstart
	_export({ target: 'String', proto: true, forced: webkitStringPadBug }, {
	  padStart: function padStart(maxLength /* , fillString = ' ' */) {
	    return $padStart(this, maxLength, arguments.length > 1 ? arguments[1] : undefined);
	  }
	});

	// `String.raw` method
	// https://tc39.github.io/ecma262/#sec-string.raw
	_export({ target: 'String', stat: true }, {
	  raw: function raw(template) {
	    var rawTemplate = toIndexedObject(template.raw);
	    var literalSegments = toLength(rawTemplate.length);
	    var argumentsLength = arguments.length;
	    var elements = [];
	    var i = 0;
	    while (literalSegments > i) {
	      elements.push(String(rawTemplate[i++]));
	      if (i < argumentsLength) elements.push(String(arguments[i]));
	    } return elements.join('');
	  }
	});

	// `String.prototype.repeat` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.repeat
	_export({ target: 'String', proto: true }, {
	  repeat: stringRepeat
	});

	var max$3 = Math.max;
	var min$6 = Math.min;
	var floor$5 = Math.floor;
	var SUBSTITUTION_SYMBOLS = /\$([$&'`]|\d\d?|<[^>]*>)/g;
	var SUBSTITUTION_SYMBOLS_NO_NAMED = /\$([$&'`]|\d\d?)/g;

	var maybeToString = function (it) {
	  return it === undefined ? it : String(it);
	};

	// @@replace logic
	fixRegexpWellKnownSymbolLogic('replace', 2, function (REPLACE, nativeReplace, maybeCallNative) {
	  return [
	    // `String.prototype.replace` method
	    // https://tc39.github.io/ecma262/#sec-string.prototype.replace
	    function replace(searchValue, replaceValue) {
	      var O = requireObjectCoercible(this);
	      var replacer = searchValue == undefined ? undefined : searchValue[REPLACE];
	      return replacer !== undefined
	        ? replacer.call(searchValue, O, replaceValue)
	        : nativeReplace.call(String(O), searchValue, replaceValue);
	    },
	    // `RegExp.prototype[@@replace]` method
	    // https://tc39.github.io/ecma262/#sec-regexp.prototype-@@replace
	    function (regexp, replaceValue) {
	      var res = maybeCallNative(nativeReplace, regexp, this, replaceValue);
	      if (res.done) return res.value;

	      var rx = anObject(regexp);
	      var S = String(this);

	      var functionalReplace = typeof replaceValue === 'function';
	      if (!functionalReplace) replaceValue = String(replaceValue);

	      var global = rx.global;
	      if (global) {
	        var fullUnicode = rx.unicode;
	        rx.lastIndex = 0;
	      }
	      var results = [];
	      while (true) {
	        var result = regexpExecAbstract(rx, S);
	        if (result === null) break;

	        results.push(result);
	        if (!global) break;

	        var matchStr = String(result[0]);
	        if (matchStr === '') rx.lastIndex = advanceStringIndex(S, toLength(rx.lastIndex), fullUnicode);
	      }

	      var accumulatedResult = '';
	      var nextSourcePosition = 0;
	      for (var i = 0; i < results.length; i++) {
	        result = results[i];

	        var matched = String(result[0]);
	        var position = max$3(min$6(toInteger(result.index), S.length), 0);
	        var captures = [];
	        // NOTE: This is equivalent to
	        //   captures = result.slice(1).map(maybeToString)
	        // but for some reason `nativeSlice.call(result, 1, result.length)` (called in
	        // the slice polyfill when slicing native arrays) "doesn't work" in safari 9 and
	        // causes a crash (https://pastebin.com/N21QzeQA) when trying to debug it.
	        for (var j = 1; j < result.length; j++) captures.push(maybeToString(result[j]));
	        var namedCaptures = result.groups;
	        if (functionalReplace) {
	          var replacerArgs = [matched].concat(captures, position, S);
	          if (namedCaptures !== undefined) replacerArgs.push(namedCaptures);
	          var replacement = String(replaceValue.apply(undefined, replacerArgs));
	        } else {
	          replacement = getSubstitution(matched, S, position, captures, namedCaptures, replaceValue);
	        }
	        if (position >= nextSourcePosition) {
	          accumulatedResult += S.slice(nextSourcePosition, position) + replacement;
	          nextSourcePosition = position + matched.length;
	        }
	      }
	      return accumulatedResult + S.slice(nextSourcePosition);
	    }
	  ];

	  // https://tc39.github.io/ecma262/#sec-getsubstitution
	  function getSubstitution(matched, str, position, captures, namedCaptures, replacement) {
	    var tailPos = position + matched.length;
	    var m = captures.length;
	    var symbols = SUBSTITUTION_SYMBOLS_NO_NAMED;
	    if (namedCaptures !== undefined) {
	      namedCaptures = toObject(namedCaptures);
	      symbols = SUBSTITUTION_SYMBOLS;
	    }
	    return nativeReplace.call(replacement, symbols, function (match, ch) {
	      var capture;
	      switch (ch.charAt(0)) {
	        case '$': return '$';
	        case '&': return matched;
	        case '`': return str.slice(0, position);
	        case "'": return str.slice(tailPos);
	        case '<':
	          capture = namedCaptures[ch.slice(1, -1)];
	          break;
	        default: // \d\d?
	          var n = +ch;
	          if (n === 0) return match;
	          if (n > m) {
	            var f = floor$5(n / 10);
	            if (f === 0) return match;
	            if (f <= m) return captures[f - 1] === undefined ? ch.charAt(1) : captures[f - 1] + ch.charAt(1);
	            return match;
	          }
	          capture = captures[n - 1];
	      }
	      return capture === undefined ? '' : capture;
	    });
	  }
	});

	// @@search logic
	fixRegexpWellKnownSymbolLogic('search', 1, function (SEARCH, nativeSearch, maybeCallNative) {
	  return [
	    // `String.prototype.search` method
	    // https://tc39.github.io/ecma262/#sec-string.prototype.search
	    function search(regexp) {
	      var O = requireObjectCoercible(this);
	      var searcher = regexp == undefined ? undefined : regexp[SEARCH];
	      return searcher !== undefined ? searcher.call(regexp, O) : new RegExp(regexp)[SEARCH](String(O));
	    },
	    // `RegExp.prototype[@@search]` method
	    // https://tc39.github.io/ecma262/#sec-regexp.prototype-@@search
	    function (regexp) {
	      var res = maybeCallNative(nativeSearch, regexp, this);
	      if (res.done) return res.value;

	      var rx = anObject(regexp);
	      var S = String(this);

	      var previousLastIndex = rx.lastIndex;
	      if (!sameValue(previousLastIndex, 0)) rx.lastIndex = 0;
	      var result = regexpExecAbstract(rx, S);
	      if (!sameValue(rx.lastIndex, previousLastIndex)) rx.lastIndex = previousLastIndex;
	      return result === null ? -1 : result.index;
	    }
	  ];
	});

	var arrayPush = [].push;
	var min$7 = Math.min;
	var MAX_UINT32 = 0xFFFFFFFF;

	// babel-minify transpiles RegExp('x', 'y') -> /x/y and it causes SyntaxError
	var SUPPORTS_Y = !fails(function () { return !RegExp(MAX_UINT32, 'y'); });

	// @@split logic
	fixRegexpWellKnownSymbolLogic('split', 2, function (SPLIT, nativeSplit, maybeCallNative) {
	  var internalSplit;
	  if (
	    'abbc'.split(/(b)*/)[1] == 'c' ||
	    'test'.split(/(?:)/, -1).length != 4 ||
	    'ab'.split(/(?:ab)*/).length != 2 ||
	    '.'.split(/(.?)(.?)/).length != 4 ||
	    '.'.split(/()()/).length > 1 ||
	    ''.split(/.?/).length
	  ) {
	    // based on es5-shim implementation, need to rework it
	    internalSplit = function (separator, limit) {
	      var string = String(requireObjectCoercible(this));
	      var lim = limit === undefined ? MAX_UINT32 : limit >>> 0;
	      if (lim === 0) return [];
	      if (separator === undefined) return [string];
	      // If `separator` is not a regex, use native split
	      if (!isRegexp(separator)) {
	        return nativeSplit.call(string, separator, lim);
	      }
	      var output = [];
	      var flags = (separator.ignoreCase ? 'i' : '') +
	                  (separator.multiline ? 'm' : '') +
	                  (separator.unicode ? 'u' : '') +
	                  (separator.sticky ? 'y' : '');
	      var lastLastIndex = 0;
	      // Make `global` and avoid `lastIndex` issues by working with a copy
	      var separatorCopy = new RegExp(separator.source, flags + 'g');
	      var match, lastIndex, lastLength;
	      while (match = regexpExec.call(separatorCopy, string)) {
	        lastIndex = separatorCopy.lastIndex;
	        if (lastIndex > lastLastIndex) {
	          output.push(string.slice(lastLastIndex, match.index));
	          if (match.length > 1 && match.index < string.length) arrayPush.apply(output, match.slice(1));
	          lastLength = match[0].length;
	          lastLastIndex = lastIndex;
	          if (output.length >= lim) break;
	        }
	        if (separatorCopy.lastIndex === match.index) separatorCopy.lastIndex++; // Avoid an infinite loop
	      }
	      if (lastLastIndex === string.length) {
	        if (lastLength || !separatorCopy.test('')) output.push('');
	      } else output.push(string.slice(lastLastIndex));
	      return output.length > lim ? output.slice(0, lim) : output;
	    };
	  // Chakra, V8
	  } else if ('0'.split(undefined, 0).length) {
	    internalSplit = function (separator, limit) {
	      return separator === undefined && limit === 0 ? [] : nativeSplit.call(this, separator, limit);
	    };
	  } else internalSplit = nativeSplit;

	  return [
	    // `String.prototype.split` method
	    // https://tc39.github.io/ecma262/#sec-string.prototype.split
	    function split(separator, limit) {
	      var O = requireObjectCoercible(this);
	      var splitter = separator == undefined ? undefined : separator[SPLIT];
	      return splitter !== undefined
	        ? splitter.call(separator, O, limit)
	        : internalSplit.call(String(O), separator, limit);
	    },
	    // `RegExp.prototype[@@split]` method
	    // https://tc39.github.io/ecma262/#sec-regexp.prototype-@@split
	    //
	    // NOTE: This cannot be properly polyfilled in engines that don't support
	    // the 'y' flag.
	    function (regexp, limit) {
	      var res = maybeCallNative(internalSplit, regexp, this, limit, internalSplit !== nativeSplit);
	      if (res.done) return res.value;

	      var rx = anObject(regexp);
	      var S = String(this);
	      var C = speciesConstructor(rx, RegExp);

	      var unicodeMatching = rx.unicode;
	      var flags = (rx.ignoreCase ? 'i' : '') +
	                  (rx.multiline ? 'm' : '') +
	                  (rx.unicode ? 'u' : '') +
	                  (SUPPORTS_Y ? 'y' : 'g');

	      // ^(? + rx + ) is needed, in combination with some S slicing, to
	      // simulate the 'y' flag.
	      var splitter = new C(SUPPORTS_Y ? rx : '^(?:' + rx.source + ')', flags);
	      var lim = limit === undefined ? MAX_UINT32 : limit >>> 0;
	      if (lim === 0) return [];
	      if (S.length === 0) return regexpExecAbstract(splitter, S) === null ? [S] : [];
	      var p = 0;
	      var q = 0;
	      var A = [];
	      while (q < S.length) {
	        splitter.lastIndex = SUPPORTS_Y ? q : 0;
	        var z = regexpExecAbstract(splitter, SUPPORTS_Y ? S : S.slice(q));
	        var e;
	        if (
	          z === null ||
	          (e = min$7(toLength(splitter.lastIndex + (SUPPORTS_Y ? 0 : q)), S.length)) === p
	        ) {
	          q = advanceStringIndex(S, q, unicodeMatching);
	        } else {
	          A.push(S.slice(p, q));
	          if (A.length === lim) return A;
	          for (var i = 1; i <= z.length - 1; i++) {
	            A.push(z[i]);
	            if (A.length === lim) return A;
	          }
	          q = p = e;
	        }
	      }
	      A.push(S.slice(p));
	      return A;
	    }
	  ];
	}, !SUPPORTS_Y);

	var nativeStartsWith = ''.startsWith;
	var min$8 = Math.min;

	// `String.prototype.startsWith` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.startswith
	_export({ target: 'String', proto: true, forced: !correctIsRegexpLogic('startsWith') }, {
	  startsWith: function startsWith(searchString /* , position = 0 */) {
	    var that = String(requireObjectCoercible(this));
	    notARegexp(searchString);
	    var index = toLength(min$8(arguments.length > 1 ? arguments[1] : undefined, that.length));
	    var search = String(searchString);
	    return nativeStartsWith
	      ? nativeStartsWith.call(that, search, index)
	      : that.slice(index, index + search.length) === search;
	  }
	});

	var non = '\u200B\u0085\u180E';

	// check that a method works with the correct list
	// of whitespaces and has a correct name
	var forcedStringTrimMethod = function (METHOD_NAME) {
	  return fails(function () {
	    return !!whitespaces[METHOD_NAME]() || non[METHOD_NAME]() != non || whitespaces[METHOD_NAME].name !== METHOD_NAME;
	  });
	};

	var $trim = stringTrim.trim;


	// `String.prototype.trim` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.trim
	_export({ target: 'String', proto: true, forced: forcedStringTrimMethod('trim') }, {
	  trim: function trim() {
	    return $trim(this);
	  }
	});

	var $trimEnd = stringTrim.end;


	var FORCED$e = forcedStringTrimMethod('trimEnd');

	var trimEnd = FORCED$e ? function trimEnd() {
	  return $trimEnd(this);
	} : ''.trimEnd;

	// `String.prototype.{ trimEnd, trimRight }` methods
	// https://github.com/tc39/ecmascript-string-left-right-trim
	_export({ target: 'String', proto: true, forced: FORCED$e }, {
	  trimEnd: trimEnd,
	  trimRight: trimEnd
	});

	var $trimStart = stringTrim.start;


	var FORCED$f = forcedStringTrimMethod('trimStart');

	var trimStart = FORCED$f ? function trimStart() {
	  return $trimStart(this);
	} : ''.trimStart;

	// `String.prototype.{ trimStart, trimLeft }` methods
	// https://github.com/tc39/ecmascript-string-left-right-trim
	_export({ target: 'String', proto: true, forced: FORCED$f }, {
	  trimStart: trimStart,
	  trimLeft: trimStart
	});

	var quot = /"/g;

	// B.2.3.2.1 CreateHTML(string, tag, attribute, value)
	// https://tc39.github.io/ecma262/#sec-createhtml
	var createHtml = function (string, tag, attribute, value) {
	  var S = String(requireObjectCoercible(string));
	  var p1 = '<' + tag;
	  if (attribute !== '') p1 += ' ' + attribute + '="' + String(value).replace(quot, '&quot;') + '"';
	  return p1 + '>' + S + '</' + tag + '>';
	};

	// check the existence of a method, lowercase
	// of a tag and escaping quotes in arguments
	var forcedStringHtmlMethod = function (METHOD_NAME) {
	  return fails(function () {
	    var test = ''[METHOD_NAME]('"');
	    return test !== test.toLowerCase() || test.split('"').length > 3;
	  });
	};

	// `String.prototype.anchor` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.anchor
	_export({ target: 'String', proto: true, forced: forcedStringHtmlMethod('anchor') }, {
	  anchor: function anchor(name) {
	    return createHtml(this, 'a', 'name', name);
	  }
	});

	// `String.prototype.big` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.big
	_export({ target: 'String', proto: true, forced: forcedStringHtmlMethod('big') }, {
	  big: function big() {
	    return createHtml(this, 'big', '', '');
	  }
	});

	// `String.prototype.blink` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.blink
	_export({ target: 'String', proto: true, forced: forcedStringHtmlMethod('blink') }, {
	  blink: function blink() {
	    return createHtml(this, 'blink', '', '');
	  }
	});

	// `String.prototype.bold` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.bold
	_export({ target: 'String', proto: true, forced: forcedStringHtmlMethod('bold') }, {
	  bold: function bold() {
	    return createHtml(this, 'b', '', '');
	  }
	});

	// `String.prototype.fixed` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.fixed
	_export({ target: 'String', proto: true, forced: forcedStringHtmlMethod('fixed') }, {
	  fixed: function fixed() {
	    return createHtml(this, 'tt', '', '');
	  }
	});

	// `String.prototype.fontcolor` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.fontcolor
	_export({ target: 'String', proto: true, forced: forcedStringHtmlMethod('fontcolor') }, {
	  fontcolor: function fontcolor(color) {
	    return createHtml(this, 'font', 'color', color);
	  }
	});

	// `String.prototype.fontsize` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.fontsize
	_export({ target: 'String', proto: true, forced: forcedStringHtmlMethod('fontsize') }, {
	  fontsize: function fontsize(size) {
	    return createHtml(this, 'font', 'size', size);
	  }
	});

	// `String.prototype.italics` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.italics
	_export({ target: 'String', proto: true, forced: forcedStringHtmlMethod('italics') }, {
	  italics: function italics() {
	    return createHtml(this, 'i', '', '');
	  }
	});

	// `String.prototype.link` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.link
	_export({ target: 'String', proto: true, forced: forcedStringHtmlMethod('link') }, {
	  link: function link(url) {
	    return createHtml(this, 'a', 'href', url);
	  }
	});

	// `String.prototype.small` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.small
	_export({ target: 'String', proto: true, forced: forcedStringHtmlMethod('small') }, {
	  small: function small() {
	    return createHtml(this, 'small', '', '');
	  }
	});

	// `String.prototype.strike` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.strike
	_export({ target: 'String', proto: true, forced: forcedStringHtmlMethod('strike') }, {
	  strike: function strike() {
	    return createHtml(this, 'strike', '', '');
	  }
	});

	// `String.prototype.sub` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.sub
	_export({ target: 'String', proto: true, forced: forcedStringHtmlMethod('sub') }, {
	  sub: function sub() {
	    return createHtml(this, 'sub', '', '');
	  }
	});

	// `String.prototype.sup` method
	// https://tc39.github.io/ecma262/#sec-string.prototype.sup
	_export({ target: 'String', proto: true, forced: forcedStringHtmlMethod('sup') }, {
	  sup: function sup() {
	    return createHtml(this, 'sup', '', '');
	  }
	});

	/* eslint-disable no-new */



	var NATIVE_ARRAY_BUFFER_VIEWS$2 = arrayBufferViewCore.NATIVE_ARRAY_BUFFER_VIEWS;

	var ArrayBuffer$3 = global_1.ArrayBuffer;
	var Int8Array$2 = global_1.Int8Array;

	var typedArraysConstructorsRequiresWrappers = !NATIVE_ARRAY_BUFFER_VIEWS$2 || !fails(function () {
	  Int8Array$2(1);
	}) || !fails(function () {
	  new Int8Array$2(-1);
	}) || !checkCorrectnessOfIteration(function (iterable) {
	  new Int8Array$2();
	  new Int8Array$2(null);
	  new Int8Array$2(1.5);
	  new Int8Array$2(iterable);
	}, true) || fails(function () {
	  // Safari 11 bug
	  return new Int8Array$2(new ArrayBuffer$3(2), 1, undefined).length !== 1;
	});

	var toOffset = function (it, BYTES) {
	  var offset = toInteger(it);
	  if (offset < 0 || offset % BYTES) throw RangeError('Wrong offset');
	  return offset;
	};

	var aTypedArrayConstructor$1 = arrayBufferViewCore.aTypedArrayConstructor;

	var typedArrayFrom = function from(source /* , mapfn, thisArg */) {
	  var O = toObject(source);
	  var argumentsLength = arguments.length;
	  var mapfn = argumentsLength > 1 ? arguments[1] : undefined;
	  var mapping = mapfn !== undefined;
	  var iteratorMethod = getIteratorMethod(O);
	  var i, length, result, step, iterator;
	  if (iteratorMethod != undefined && !isArrayIteratorMethod(iteratorMethod)) {
	    iterator = iteratorMethod.call(O);
	    O = [];
	    while (!(step = iterator.next()).done) {
	      O.push(step.value);
	    }
	  }
	  if (mapping && argumentsLength > 2) {
	    mapfn = bindContext(mapfn, arguments[2], 2);
	  }
	  length = toLength(O.length);
	  result = new (aTypedArrayConstructor$1(this))(length);
	  for (i = 0; length > i; i++) {
	    result[i] = mapping ? mapfn(O[i], i) : O[i];
	  }
	  return result;
	};

	var typedArrayConstructor = createCommonjsModule(function (module) {


















	var getOwnPropertyNames = objectGetOwnPropertyNames.f;

	var forEach = arrayIteration.forEach;





	var getInternalState = internalState.get;
	var setInternalState = internalState.set;
	var nativeDefineProperty = objectDefineProperty.f;
	var nativeGetOwnPropertyDescriptor = objectGetOwnPropertyDescriptor.f;
	var round = Math.round;
	var RangeError = global_1.RangeError;
	var ArrayBuffer = arrayBuffer.ArrayBuffer;
	var DataView = arrayBuffer.DataView;
	var NATIVE_ARRAY_BUFFER_VIEWS = arrayBufferViewCore.NATIVE_ARRAY_BUFFER_VIEWS;
	var TYPED_ARRAY_TAG = arrayBufferViewCore.TYPED_ARRAY_TAG;
	var TypedArray = arrayBufferViewCore.TypedArray;
	var TypedArrayPrototype = arrayBufferViewCore.TypedArrayPrototype;
	var aTypedArrayConstructor = arrayBufferViewCore.aTypedArrayConstructor;
	var isTypedArray = arrayBufferViewCore.isTypedArray;
	var BYTES_PER_ELEMENT = 'BYTES_PER_ELEMENT';
	var WRONG_LENGTH = 'Wrong length';

	var fromList = function (C, list) {
	  var index = 0;
	  var length = list.length;
	  var result = new (aTypedArrayConstructor(C))(length);
	  while (length > index) result[index] = list[index++];
	  return result;
	};

	var addGetter = function (it, key) {
	  nativeDefineProperty(it, key, { get: function () {
	    return getInternalState(this)[key];
	  } });
	};

	var isArrayBuffer = function (it) {
	  var klass;
	  return it instanceof ArrayBuffer || (klass = classof(it)) == 'ArrayBuffer' || klass == 'SharedArrayBuffer';
	};

	var isTypedArrayIndex = function (target, key) {
	  return isTypedArray(target)
	    && typeof key != 'symbol'
	    && key in target
	    && String(+key) == String(key);
	};

	var wrappedGetOwnPropertyDescriptor = function getOwnPropertyDescriptor(target, key) {
	  return isTypedArrayIndex(target, key = toPrimitive(key, true))
	    ? createPropertyDescriptor(2, target[key])
	    : nativeGetOwnPropertyDescriptor(target, key);
	};

	var wrappedDefineProperty = function defineProperty(target, key, descriptor) {
	  if (isTypedArrayIndex(target, key = toPrimitive(key, true))
	    && isObject(descriptor)
	    && has(descriptor, 'value')
	    && !has(descriptor, 'get')
	    && !has(descriptor, 'set')
	    // TODO: add validation descriptor w/o calling accessors
	    && !descriptor.configurable
	    && (!has(descriptor, 'writable') || descriptor.writable)
	    && (!has(descriptor, 'enumerable') || descriptor.enumerable)
	  ) {
	    target[key] = descriptor.value;
	    return target;
	  } return nativeDefineProperty(target, key, descriptor);
	};

	if (descriptors) {
	  if (!NATIVE_ARRAY_BUFFER_VIEWS) {
	    objectGetOwnPropertyDescriptor.f = wrappedGetOwnPropertyDescriptor;
	    objectDefineProperty.f = wrappedDefineProperty;
	    addGetter(TypedArrayPrototype, 'buffer');
	    addGetter(TypedArrayPrototype, 'byteOffset');
	    addGetter(TypedArrayPrototype, 'byteLength');
	    addGetter(TypedArrayPrototype, 'length');
	  }

	  _export({ target: 'Object', stat: true, forced: !NATIVE_ARRAY_BUFFER_VIEWS }, {
	    getOwnPropertyDescriptor: wrappedGetOwnPropertyDescriptor,
	    defineProperty: wrappedDefineProperty
	  });

	  // eslint-disable-next-line max-statements
	  module.exports = function (TYPE, BYTES, wrapper, CLAMPED) {
	    var CONSTRUCTOR_NAME = TYPE + (CLAMPED ? 'Clamped' : '') + 'Array';
	    var GETTER = 'get' + TYPE;
	    var SETTER = 'set' + TYPE;
	    var NativeTypedArrayConstructor = global_1[CONSTRUCTOR_NAME];
	    var TypedArrayConstructor = NativeTypedArrayConstructor;
	    var TypedArrayConstructorPrototype = TypedArrayConstructor && TypedArrayConstructor.prototype;
	    var exported = {};

	    var getter = function (that, index) {
	      var data = getInternalState(that);
	      return data.view[GETTER](index * BYTES + data.byteOffset, true);
	    };

	    var setter = function (that, index, value) {
	      var data = getInternalState(that);
	      if (CLAMPED) value = (value = round(value)) < 0 ? 0 : value > 0xFF ? 0xFF : value & 0xFF;
	      data.view[SETTER](index * BYTES + data.byteOffset, value, true);
	    };

	    var addElement = function (that, index) {
	      nativeDefineProperty(that, index, {
	        get: function () {
	          return getter(this, index);
	        },
	        set: function (value) {
	          return setter(this, index, value);
	        },
	        enumerable: true
	      });
	    };

	    if (!NATIVE_ARRAY_BUFFER_VIEWS) {
	      TypedArrayConstructor = wrapper(function (that, data, offset, $length) {
	        anInstance(that, TypedArrayConstructor, CONSTRUCTOR_NAME);
	        var index = 0;
	        var byteOffset = 0;
	        var buffer, byteLength, length;
	        if (!isObject(data)) {
	          length = toIndex(data);
	          byteLength = length * BYTES;
	          buffer = new ArrayBuffer(byteLength);
	        } else if (isArrayBuffer(data)) {
	          buffer = data;
	          byteOffset = toOffset(offset, BYTES);
	          var $len = data.byteLength;
	          if ($length === undefined) {
	            if ($len % BYTES) throw RangeError(WRONG_LENGTH);
	            byteLength = $len - byteOffset;
	            if (byteLength < 0) throw RangeError(WRONG_LENGTH);
	          } else {
	            byteLength = toLength($length) * BYTES;
	            if (byteLength + byteOffset > $len) throw RangeError(WRONG_LENGTH);
	          }
	          length = byteLength / BYTES;
	        } else if (isTypedArray(data)) {
	          return fromList(TypedArrayConstructor, data);
	        } else {
	          return typedArrayFrom.call(TypedArrayConstructor, data);
	        }
	        setInternalState(that, {
	          buffer: buffer,
	          byteOffset: byteOffset,
	          byteLength: byteLength,
	          length: length,
	          view: new DataView(buffer)
	        });
	        while (index < length) addElement(that, index++);
	      });

	      if (objectSetPrototypeOf) objectSetPrototypeOf(TypedArrayConstructor, TypedArray);
	      TypedArrayConstructorPrototype = TypedArrayConstructor.prototype = objectCreate(TypedArrayPrototype);
	    } else if (typedArraysConstructorsRequiresWrappers) {
	      TypedArrayConstructor = wrapper(function (dummy, data, typedArrayOffset, $length) {
	        anInstance(dummy, TypedArrayConstructor, CONSTRUCTOR_NAME);
	        if (!isObject(data)) return new NativeTypedArrayConstructor(toIndex(data));
	        if (isArrayBuffer(data)) return $length !== undefined
	          ? new NativeTypedArrayConstructor(data, toOffset(typedArrayOffset, BYTES), $length)
	          : typedArrayOffset !== undefined
	            ? new NativeTypedArrayConstructor(data, toOffset(typedArrayOffset, BYTES))
	            : new NativeTypedArrayConstructor(data);
	        if (isTypedArray(data)) return fromList(TypedArrayConstructor, data);
	        return typedArrayFrom.call(TypedArrayConstructor, data);
	      });

	      if (objectSetPrototypeOf) objectSetPrototypeOf(TypedArrayConstructor, TypedArray);
	      forEach(getOwnPropertyNames(NativeTypedArrayConstructor), function (key) {
	        if (!(key in TypedArrayConstructor)) hide(TypedArrayConstructor, key, NativeTypedArrayConstructor[key]);
	      });
	      TypedArrayConstructor.prototype = TypedArrayConstructorPrototype;
	    }

	    if (TypedArrayConstructorPrototype.constructor !== TypedArrayConstructor) {
	      hide(TypedArrayConstructorPrototype, 'constructor', TypedArrayConstructor);
	    }

	    if (TYPED_ARRAY_TAG) hide(TypedArrayConstructorPrototype, TYPED_ARRAY_TAG, CONSTRUCTOR_NAME);

	    exported[CONSTRUCTOR_NAME] = TypedArrayConstructor;

	    _export({
	      global: true, forced: TypedArrayConstructor != NativeTypedArrayConstructor, sham: !NATIVE_ARRAY_BUFFER_VIEWS
	    }, exported);

	    if (!(BYTES_PER_ELEMENT in TypedArrayConstructor)) {
	      hide(TypedArrayConstructor, BYTES_PER_ELEMENT, BYTES);
	    }

	    if (!(BYTES_PER_ELEMENT in TypedArrayConstructorPrototype)) {
	      hide(TypedArrayConstructorPrototype, BYTES_PER_ELEMENT, BYTES);
	    }

	    setSpecies(CONSTRUCTOR_NAME);
	  };
	} else module.exports = function () { /* empty */ };
	});

	// `Float32Array` constructor
	// https://tc39.github.io/ecma262/#sec-typedarray-objects
	typedArrayConstructor('Float32', 4, function (init) {
	  return function Float32Array(data, byteOffset, length) {
	    return init(this, data, byteOffset, length);
	  };
	});

	// `Float64Array` constructor
	// https://tc39.github.io/ecma262/#sec-typedarray-objects
	typedArrayConstructor('Float64', 8, function (init) {
	  return function Float64Array(data, byteOffset, length) {
	    return init(this, data, byteOffset, length);
	  };
	});

	// `Int8Array` constructor
	// https://tc39.github.io/ecma262/#sec-typedarray-objects
	typedArrayConstructor('Int8', 1, function (init) {
	  return function Int8Array(data, byteOffset, length) {
	    return init(this, data, byteOffset, length);
	  };
	});

	// `Int16Array` constructor
	// https://tc39.github.io/ecma262/#sec-typedarray-objects
	typedArrayConstructor('Int16', 2, function (init) {
	  return function Int16Array(data, byteOffset, length) {
	    return init(this, data, byteOffset, length);
	  };
	});

	// `Int32Array` constructor
	// https://tc39.github.io/ecma262/#sec-typedarray-objects
	typedArrayConstructor('Int32', 4, function (init) {
	  return function Int32Array(data, byteOffset, length) {
	    return init(this, data, byteOffset, length);
	  };
	});

	// `Uint8Array` constructor
	// https://tc39.github.io/ecma262/#sec-typedarray-objects
	typedArrayConstructor('Uint8', 1, function (init) {
	  return function Uint8Array(data, byteOffset, length) {
	    return init(this, data, byteOffset, length);
	  };
	});

	// `Uint8ClampedArray` constructor
	// https://tc39.github.io/ecma262/#sec-typedarray-objects
	typedArrayConstructor('Uint8', 1, function (init) {
	  return function Uint8ClampedArray(data, byteOffset, length) {
	    return init(this, data, byteOffset, length);
	  };
	}, true);

	// `Uint16Array` constructor
	// https://tc39.github.io/ecma262/#sec-typedarray-objects
	typedArrayConstructor('Uint16', 2, function (init) {
	  return function Uint16Array(data, byteOffset, length) {
	    return init(this, data, byteOffset, length);
	  };
	});

	// `Uint32Array` constructor
	// https://tc39.github.io/ecma262/#sec-typedarray-objects
	typedArrayConstructor('Uint32', 4, function (init) {
	  return function Uint32Array(data, byteOffset, length) {
	    return init(this, data, byteOffset, length);
	  };
	});

	var aTypedArray$1 = arrayBufferViewCore.aTypedArray;

	// `%TypedArray%.prototype.copyWithin` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.copywithin
	arrayBufferViewCore.exportProto('copyWithin', function copyWithin(target, start /* , end */) {
	  return arrayCopyWithin.call(aTypedArray$1(this), target, start, arguments.length > 2 ? arguments[2] : undefined);
	});

	var $every$1 = arrayIteration.every;

	var aTypedArray$2 = arrayBufferViewCore.aTypedArray;

	// `%TypedArray%.prototype.every` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.every
	arrayBufferViewCore.exportProto('every', function every(callbackfn /* , thisArg */) {
	  return $every$1(aTypedArray$2(this), callbackfn, arguments.length > 1 ? arguments[1] : undefined);
	});

	var aTypedArray$3 = arrayBufferViewCore.aTypedArray;

	// `%TypedArray%.prototype.fill` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.fill
	// eslint-disable-next-line no-unused-vars
	arrayBufferViewCore.exportProto('fill', function fill(value /* , start, end */) {
	  return arrayFill.apply(aTypedArray$3(this), arguments);
	});

	var $filter$1 = arrayIteration.filter;


	var aTypedArray$4 = arrayBufferViewCore.aTypedArray;
	var aTypedArrayConstructor$2 = arrayBufferViewCore.aTypedArrayConstructor;

	// `%TypedArray%.prototype.filter` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.filter
	arrayBufferViewCore.exportProto('filter', function filter(callbackfn /* , thisArg */) {
	  var list = $filter$1(aTypedArray$4(this), callbackfn, arguments.length > 1 ? arguments[1] : undefined);
	  var C = speciesConstructor(this, this.constructor);
	  var index = 0;
	  var length = list.length;
	  var result = new (aTypedArrayConstructor$2(C))(length);
	  while (length > index) result[index] = list[index++];
	  return result;
	});

	var $find$1 = arrayIteration.find;

	var aTypedArray$5 = arrayBufferViewCore.aTypedArray;

	// `%TypedArray%.prototype.find` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.find
	arrayBufferViewCore.exportProto('find', function find(predicate /* , thisArg */) {
	  return $find$1(aTypedArray$5(this), predicate, arguments.length > 1 ? arguments[1] : undefined);
	});

	var $findIndex$1 = arrayIteration.findIndex;

	var aTypedArray$6 = arrayBufferViewCore.aTypedArray;

	// `%TypedArray%.prototype.findIndex` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.findindex
	arrayBufferViewCore.exportProto('findIndex', function findIndex(predicate /* , thisArg */) {
	  return $findIndex$1(aTypedArray$6(this), predicate, arguments.length > 1 ? arguments[1] : undefined);
	});

	var $forEach$2 = arrayIteration.forEach;

	var aTypedArray$7 = arrayBufferViewCore.aTypedArray;

	// `%TypedArray%.prototype.forEach` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.foreach
	arrayBufferViewCore.exportProto('forEach', function forEach(callbackfn /* , thisArg */) {
	  $forEach$2(aTypedArray$7(this), callbackfn, arguments.length > 1 ? arguments[1] : undefined);
	});

	// `%TypedArray%.from` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.from
	arrayBufferViewCore.exportStatic('from', typedArrayFrom, typedArraysConstructorsRequiresWrappers);

	var $includes$1 = arrayIncludes.includes;

	var aTypedArray$8 = arrayBufferViewCore.aTypedArray;

	// `%TypedArray%.prototype.includes` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.includes
	arrayBufferViewCore.exportProto('includes', function includes(searchElement /* , fromIndex */) {
	  return $includes$1(aTypedArray$8(this), searchElement, arguments.length > 1 ? arguments[1] : undefined);
	});

	var $indexOf$1 = arrayIncludes.indexOf;

	var aTypedArray$9 = arrayBufferViewCore.aTypedArray;

	// `%TypedArray%.prototype.indexOf` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.indexof
	arrayBufferViewCore.exportProto('indexOf', function indexOf(searchElement /* , fromIndex */) {
	  return $indexOf$1(aTypedArray$9(this), searchElement, arguments.length > 1 ? arguments[1] : undefined);
	});

	var ITERATOR$5 = wellKnownSymbol('iterator');
	var Uint8Array = global_1.Uint8Array;
	var arrayValues = es_array_iterator.values;
	var arrayKeys = es_array_iterator.keys;
	var arrayEntries = es_array_iterator.entries;
	var aTypedArray$a = arrayBufferViewCore.aTypedArray;
	var exportProto$1 = arrayBufferViewCore.exportProto;
	var nativeTypedArrayIterator = Uint8Array && Uint8Array.prototype[ITERATOR$5];

	var CORRECT_ITER_NAME = !!nativeTypedArrayIterator
	  && (nativeTypedArrayIterator.name == 'values' || nativeTypedArrayIterator.name == undefined);

	var typedArrayValues = function values() {
	  return arrayValues.call(aTypedArray$a(this));
	};

	// `%TypedArray%.prototype.entries` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.entries
	exportProto$1('entries', function entries() {
	  return arrayEntries.call(aTypedArray$a(this));
	});
	// `%TypedArray%.prototype.keys` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.keys
	exportProto$1('keys', function keys() {
	  return arrayKeys.call(aTypedArray$a(this));
	});
	// `%TypedArray%.prototype.values` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.values
	exportProto$1('values', typedArrayValues, !CORRECT_ITER_NAME);
	// `%TypedArray%.prototype[@@iterator]` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype-@@iterator
	exportProto$1(ITERATOR$5, typedArrayValues, !CORRECT_ITER_NAME);

	var aTypedArray$b = arrayBufferViewCore.aTypedArray;
	var $join = [].join;

	// `%TypedArray%.prototype.join` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.join
	// eslint-disable-next-line no-unused-vars
	arrayBufferViewCore.exportProto('join', function join(separator) {
	  return $join.apply(aTypedArray$b(this), arguments);
	});

	var aTypedArray$c = arrayBufferViewCore.aTypedArray;

	// `%TypedArray%.prototype.lastIndexOf` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.lastindexof
	// eslint-disable-next-line no-unused-vars
	arrayBufferViewCore.exportProto('lastIndexOf', function lastIndexOf(searchElement /* , fromIndex */) {
	  return arrayLastIndexOf.apply(aTypedArray$c(this), arguments);
	});

	var $map$1 = arrayIteration.map;


	var aTypedArray$d = arrayBufferViewCore.aTypedArray;
	var aTypedArrayConstructor$3 = arrayBufferViewCore.aTypedArrayConstructor;

	// `%TypedArray%.prototype.map` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.map
	arrayBufferViewCore.exportProto('map', function map(mapfn /* , thisArg */) {
	  return $map$1(aTypedArray$d(this), mapfn, arguments.length > 1 ? arguments[1] : undefined, function (O, length) {
	    return new (aTypedArrayConstructor$3(speciesConstructor(O, O.constructor)))(length);
	  });
	});

	var aTypedArrayConstructor$4 = arrayBufferViewCore.aTypedArrayConstructor;

	// `%TypedArray%.of` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.of
	arrayBufferViewCore.exportStatic('of', function of(/* ...items */) {
	  var index = 0;
	  var length = arguments.length;
	  var result = new (aTypedArrayConstructor$4(this))(length);
	  while (length > index) result[index] = arguments[index++];
	  return result;
	}, typedArraysConstructorsRequiresWrappers);

	var $reduce$1 = arrayReduce.left;

	var aTypedArray$e = arrayBufferViewCore.aTypedArray;

	// `%TypedArray%.prototype.reduce` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.reduce
	arrayBufferViewCore.exportProto('reduce', function reduce(callbackfn /* , initialValue */) {
	  return $reduce$1(aTypedArray$e(this), callbackfn, arguments.length, arguments.length > 1 ? arguments[1] : undefined);
	});

	var $reduceRight$1 = arrayReduce.right;

	var aTypedArray$f = arrayBufferViewCore.aTypedArray;

	// `%TypedArray%.prototype.reduceRicht` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.reduceright
	arrayBufferViewCore.exportProto('reduceRight', function reduceRight(callbackfn /* , initialValue */) {
	  return $reduceRight$1(aTypedArray$f(this), callbackfn, arguments.length, arguments.length > 1 ? arguments[1] : undefined);
	});

	var aTypedArray$g = arrayBufferViewCore.aTypedArray;
	var floor$6 = Math.floor;

	// `%TypedArray%.prototype.reverse` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.reverse
	arrayBufferViewCore.exportProto('reverse', function reverse() {
	  var that = this;
	  var length = aTypedArray$g(that).length;
	  var middle = floor$6(length / 2);
	  var index = 0;
	  var value;
	  while (index < middle) {
	    value = that[index];
	    that[index++] = that[--length];
	    that[length] = value;
	  } return that;
	});

	var aTypedArray$h = arrayBufferViewCore.aTypedArray;

	var FORCED$g = fails(function () {
	  // eslint-disable-next-line no-undef
	  new Int8Array(1).set({});
	});

	// `%TypedArray%.prototype.set` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.set
	arrayBufferViewCore.exportProto('set', function set(arrayLike /* , offset */) {
	  aTypedArray$h(this);
	  var offset = toOffset(arguments.length > 1 ? arguments[1] : undefined, 1);
	  var length = this.length;
	  var src = toObject(arrayLike);
	  var len = toLength(src.length);
	  var index = 0;
	  if (len + offset > length) throw RangeError('Wrong length');
	  while (index < len) this[offset + index] = src[index++];
	}, FORCED$g);

	var aTypedArray$i = arrayBufferViewCore.aTypedArray;
	var aTypedArrayConstructor$5 = arrayBufferViewCore.aTypedArrayConstructor;
	var $slice = [].slice;

	var FORCED$h = fails(function () {
	  // eslint-disable-next-line no-undef
	  new Int8Array(1).slice();
	});

	// `%TypedArray%.prototype.slice` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.slice
	arrayBufferViewCore.exportProto('slice', function slice(start, end) {
	  var list = $slice.call(aTypedArray$i(this), start, end);
	  var C = speciesConstructor(this, this.constructor);
	  var index = 0;
	  var length = list.length;
	  var result = new (aTypedArrayConstructor$5(C))(length);
	  while (length > index) result[index] = list[index++];
	  return result;
	}, FORCED$h);

	var $some$1 = arrayIteration.some;

	var aTypedArray$j = arrayBufferViewCore.aTypedArray;

	// `%TypedArray%.prototype.some` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.some
	arrayBufferViewCore.exportProto('some', function some(callbackfn /* , thisArg */) {
	  return $some$1(aTypedArray$j(this), callbackfn, arguments.length > 1 ? arguments[1] : undefined);
	});

	var aTypedArray$k = arrayBufferViewCore.aTypedArray;
	var $sort = [].sort;

	// `%TypedArray%.prototype.sort` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.sort
	arrayBufferViewCore.exportProto('sort', function sort(comparefn) {
	  return $sort.call(aTypedArray$k(this), comparefn);
	});

	var aTypedArray$l = arrayBufferViewCore.aTypedArray;

	// `%TypedArray%.prototype.subarray` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.subarray
	arrayBufferViewCore.exportProto('subarray', function subarray(begin, end) {
	  var O = aTypedArray$l(this);
	  var length = O.length;
	  var beginIndex = toAbsoluteIndex(begin, length);
	  return new (speciesConstructor(O, O.constructor))(
	    O.buffer,
	    O.byteOffset + beginIndex * O.BYTES_PER_ELEMENT,
	    toLength((end === undefined ? length : toAbsoluteIndex(end, length)) - beginIndex)
	  );
	});

	var Int8Array$3 = global_1.Int8Array;
	var aTypedArray$m = arrayBufferViewCore.aTypedArray;
	var $toLocaleString = [].toLocaleString;
	var $slice$1 = [].slice;

	// iOS Safari 6.x fails here
	var TO_LOCALE_STRING_BUG = !!Int8Array$3 && fails(function () {
	  $toLocaleString.call(new Int8Array$3(1));
	});

	var FORCED$i = fails(function () {
	  return [1, 2].toLocaleString() != new Int8Array$3([1, 2]).toLocaleString();
	}) || !fails(function () {
	  Int8Array$3.prototype.toLocaleString.call([1, 2]);
	});

	// `%TypedArray%.prototype.toLocaleString` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.tolocalestring
	arrayBufferViewCore.exportProto('toLocaleString', function toLocaleString() {
	  return $toLocaleString.apply(TO_LOCALE_STRING_BUG ? $slice$1.call(aTypedArray$m(this)) : aTypedArray$m(this), arguments);
	}, FORCED$i);

	var Uint8Array$1 = global_1.Uint8Array;
	var Uint8ArrayPrototype = Uint8Array$1 && Uint8Array$1.prototype;
	var arrayToString = [].toString;
	var arrayJoin = [].join;

	if (fails(function () { arrayToString.call({}); })) {
	  arrayToString = function toString() {
	    return arrayJoin.call(this);
	  };
	}

	// `%TypedArray%.prototype.toString` method
	// https://tc39.github.io/ecma262/#sec-%typedarray%.prototype.tostring
	arrayBufferViewCore.exportProto('toString', arrayToString, (Uint8ArrayPrototype || {}).toString != arrayToString);

	var getWeakData = internalMetadata.getWeakData;








	var setInternalState$5 = internalState.set;
	var internalStateGetterFor$1 = internalState.getterFor;
	var find = arrayIteration.find;
	var findIndex = arrayIteration.findIndex;
	var id$1 = 0;

	// fallback for uncaught frozen keys
	var uncaughtFrozenStore = function (store) {
	  return store.frozen || (store.frozen = new UncaughtFrozenStore());
	};

	var UncaughtFrozenStore = function () {
	  this.entries = [];
	};

	var findUncaughtFrozen = function (store, key) {
	  return find(store.entries, function (it) {
	    return it[0] === key;
	  });
	};

	UncaughtFrozenStore.prototype = {
	  get: function (key) {
	    var entry = findUncaughtFrozen(this, key);
	    if (entry) return entry[1];
	  },
	  has: function (key) {
	    return !!findUncaughtFrozen(this, key);
	  },
	  set: function (key, value) {
	    var entry = findUncaughtFrozen(this, key);
	    if (entry) entry[1] = value;
	    else this.entries.push([key, value]);
	  },
	  'delete': function (key) {
	    var index = findIndex(this.entries, function (it) {
	      return it[0] === key;
	    });
	    if (~index) this.entries.splice(index, 1);
	    return !!~index;
	  }
	};

	var collectionWeak = {
	  getConstructor: function (wrapper, CONSTRUCTOR_NAME, IS_MAP, ADDER) {
	    var C = wrapper(function (that, iterable) {
	      anInstance(that, C, CONSTRUCTOR_NAME);
	      setInternalState$5(that, {
	        type: CONSTRUCTOR_NAME,
	        id: id$1++,
	        frozen: undefined
	      });
	      if (iterable != undefined) iterate_1(iterable, that[ADDER], that, IS_MAP);
	    });

	    var getInternalState = internalStateGetterFor$1(CONSTRUCTOR_NAME);

	    var define = function (that, key, value) {
	      var state = getInternalState(that);
	      var data = getWeakData(anObject(key), true);
	      if (data === true) uncaughtFrozenStore(state).set(key, value);
	      else data[state.id] = value;
	      return that;
	    };

	    redefineAll(C.prototype, {
	      // 23.3.3.2 WeakMap.prototype.delete(key)
	      // 23.4.3.3 WeakSet.prototype.delete(value)
	      'delete': function (key) {
	        var state = getInternalState(this);
	        if (!isObject(key)) return false;
	        var data = getWeakData(key);
	        if (data === true) return uncaughtFrozenStore(state)['delete'](key);
	        return data && has(data, state.id) && delete data[state.id];
	      },
	      // 23.3.3.4 WeakMap.prototype.has(key)
	      // 23.4.3.4 WeakSet.prototype.has(value)
	      has: function has$1(key) {
	        var state = getInternalState(this);
	        if (!isObject(key)) return false;
	        var data = getWeakData(key);
	        if (data === true) return uncaughtFrozenStore(state).has(key);
	        return data && has(data, state.id);
	      }
	    });

	    redefineAll(C.prototype, IS_MAP ? {
	      // 23.3.3.3 WeakMap.prototype.get(key)
	      get: function get(key) {
	        var state = getInternalState(this);
	        if (isObject(key)) {
	          var data = getWeakData(key);
	          if (data === true) return uncaughtFrozenStore(state).get(key);
	          return data ? data[state.id] : undefined;
	        }
	      },
	      // 23.3.3.5 WeakMap.prototype.set(key, value)
	      set: function set(key, value) {
	        return define(this, key, value);
	      }
	    } : {
	      // 23.4.3.1 WeakSet.prototype.add(value)
	      add: function add(value) {
	        return define(this, value, true);
	      }
	    });

	    return C;
	  }
	};

	var es_weakMap = createCommonjsModule(function (module) {






	var enforceIternalState = internalState.enforce;


	var IS_IE11 = !global_1.ActiveXObject && 'ActiveXObject' in global_1;
	var isExtensible = Object.isExtensible;
	var InternalWeakMap;

	var wrapper = function (get) {
	  return function WeakMap() {
	    return get(this, arguments.length ? arguments[0] : undefined);
	  };
	};

	// `WeakMap` constructor
	// https://tc39.github.io/ecma262/#sec-weakmap-constructor
	var $WeakMap = module.exports = collection('WeakMap', wrapper, collectionWeak, true, true);

	// IE11 WeakMap frozen keys fix
	// We can't use feature detection because it crash some old IE builds
	// https://github.com/zloirock/core-js/issues/485
	if (nativeWeakMap && IS_IE11) {
	  InternalWeakMap = collectionWeak.getConstructor(wrapper, 'WeakMap', true);
	  internalMetadata.REQUIRED = true;
	  var WeakMapPrototype = $WeakMap.prototype;
	  var nativeDelete = WeakMapPrototype['delete'];
	  var nativeHas = WeakMapPrototype.has;
	  var nativeGet = WeakMapPrototype.get;
	  var nativeSet = WeakMapPrototype.set;
	  redefineAll(WeakMapPrototype, {
	    'delete': function (key) {
	      if (isObject(key) && !isExtensible(key)) {
	        var state = enforceIternalState(this);
	        if (!state.frozen) state.frozen = new InternalWeakMap();
	        return nativeDelete.call(this, key) || state.frozen['delete'](key);
	      } return nativeDelete.call(this, key);
	    },
	    has: function has(key) {
	      if (isObject(key) && !isExtensible(key)) {
	        var state = enforceIternalState(this);
	        if (!state.frozen) state.frozen = new InternalWeakMap();
	        return nativeHas.call(this, key) || state.frozen.has(key);
	      } return nativeHas.call(this, key);
	    },
	    get: function get(key) {
	      if (isObject(key) && !isExtensible(key)) {
	        var state = enforceIternalState(this);
	        if (!state.frozen) state.frozen = new InternalWeakMap();
	        return nativeHas.call(this, key) ? nativeGet.call(this, key) : state.frozen.get(key);
	      } return nativeGet.call(this, key);
	    },
	    set: function set(key, value) {
	      if (isObject(key) && !isExtensible(key)) {
	        var state = enforceIternalState(this);
	        if (!state.frozen) state.frozen = new InternalWeakMap();
	        nativeHas.call(this, key) ? nativeSet.call(this, key, value) : state.frozen.set(key, value);
	      } else nativeSet.call(this, key, value);
	      return this;
	    }
	  });
	}
	});

	// `WeakSet` constructor
	// https://tc39.github.io/ecma262/#sec-weakset-constructor
	collection('WeakSet', function (get) {
	  return function WeakSet() { return get(this, arguments.length ? arguments[0] : undefined); };
	}, collectionWeak, false, true);

	var $AggregateError = function AggregateError(errors, message) {
	  var that = this;
	  if (!(that instanceof $AggregateError)) return new $AggregateError(errors, message);
	  if (objectSetPrototypeOf) {
	    that = objectSetPrototypeOf(new Error(message), objectGetPrototypeOf(that));
	  }
	  var errorsArray = [];
	  iterate_1(errors, errorsArray.push, errorsArray);
	  hide(that, 'errors', errorsArray);
	  if (message !== undefined) hide(that, 'message', String(message));
	  return that;
	};

	$AggregateError.prototype = objectCreate(Error.prototype, {
	  constructor: createPropertyDescriptor(5, $AggregateError),
	  name: createPropertyDescriptor(5, 'AggregateError')
	});

	_export({ global: true }, {
	  AggregateError: $AggregateError
	});

	var defineProperty$8 = objectDefineProperty.f;

	// `Array.prototype.lastIndex` getter
	// https://github.com/keithamus/proposal-array-last
	if (descriptors && !('lastIndex' in [])) {
	  defineProperty$8(Array.prototype, 'lastIndex', {
	    configurable: true,
	    get: function lastIndex() {
	      var O = toObject(this);
	      var len = toLength(O.length);
	      return len == 0 ? 0 : len - 1;
	    }
	  });

	  addToUnscopables('lastIndex');
	}

	var defineProperty$9 = objectDefineProperty.f;

	// `Array.prototype.lastIndex` accessor
	// https://github.com/keithamus/proposal-array-last
	if (descriptors && !('lastItem' in [])) {
	  defineProperty$9(Array.prototype, 'lastItem', {
	    configurable: true,
	    get: function lastItem() {
	      var O = toObject(this);
	      var len = toLength(O.length);
	      return len == 0 ? undefined : O[len - 1];
	    },
	    set: function lastItem(value) {
	      var O = toObject(this);
	      var len = toLength(O.length);
	      return O[len == 0 ? 0 : len - 1] = value;
	    }
	  });

	  addToUnscopables('lastItem');
	}

	// TODO: in core-js@4, move /modules/ dependencies to public entries for better optimization by tools like `preset-env`





	var Node = function () {
	  // keys
	  this.object = null;
	  this.symbol = null;
	  // child nodes
	  this.primitives = null;
	  this.objectsByIndex = objectCreate(null);
	};

	Node.prototype.get = function (key, initializer) {
	  return this[key] || (this[key] = initializer());
	};

	Node.prototype.next = function (i, it, IS_OBJECT) {
	  var store = IS_OBJECT
	    ? this.objectsByIndex[i] || (this.objectsByIndex[i] = new es_weakMap())
	    : this.primitives || (this.primitives = new es_map());
	  var entry = store.get(it);
	  if (!entry) store.set(it, entry = new Node());
	  return entry;
	};

	var root = new Node();

	var compositeKey = function () {
	  var active = root;
	  var length = arguments.length;
	  var i, it;
	  // for prevent leaking, start from objects
	  for (i = 0; i < length; i++) {
	    if (isObject(it = arguments[i])) active = active.next(i, it, true);
	  }
	  if (this === Object && active === root) throw TypeError('Composite keys must contain a non-primitive component');
	  for (i = 0; i < length; i++) {
	    if (!isObject(it = arguments[i])) active = active.next(i, it, false);
	  } return active;
	};

	var initializer = function () {
	  var freeze = getBuiltIn('Object', 'freeze');
	  return freeze ? freeze(objectCreate(null)) : objectCreate(null);
	};

	// https://github.com/tc39/proposal-richer-keys/tree/master/compositeKey
	_export({ global: true }, {
	  compositeKey: function compositeKey$1() {
	    return compositeKey.apply(Object, arguments).get('object', initializer);
	  }
	});

	// https://github.com/tc39/proposal-richer-keys/tree/master/compositeKey
	_export({ global: true }, {
	  compositeSymbol: function compositeSymbol() {
	    if (arguments.length === 1 && typeof arguments[0] === 'string') return getBuiltIn('Symbol')['for'](arguments[0]);
	    return compositeKey.apply(null, arguments).get('symbol', getBuiltIn('Symbol'));
	  }
	});

	// `globalThis` object
	// https://github.com/tc39/proposal-global
	_export({ global: true }, {
	  globalThis: global_1
	});

	// https://github.com/tc39/collection-methods
	var collectionDeleteAll = function (/* ...elements */) {
	  var collection = anObject(this);
	  var remover = aFunction$1(collection['delete']);
	  var allDeleted = true;
	  var wasDeleted;
	  for (var k = 0, len = arguments.length; k < len; k++) {
	    wasDeleted = remover.call(collection, arguments[k]);
	    allDeleted = allDeleted && wasDeleted;
	  }
	  return !!allDeleted;
	};

	// `Map.prototype.deleteAll` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Map', proto: true, real: true, forced: isPure }, {
	  deleteAll: function deleteAll(/* ...elements */) {
	    return collectionDeleteAll.apply(this, arguments);
	  }
	});

	var getIterator = function (it) {
	  var iteratorMethod = getIteratorMethod(it);
	  if (typeof iteratorMethod != 'function') {
	    throw TypeError(String(it) + ' is not iterable');
	  } return anObject(iteratorMethod.call(it));
	};

	var getMapIterator = function (it) {
	  // eslint-disable-next-line no-undef
	  return Map.prototype.entries.call(it);
	};

	// `Map.prototype.every` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Map', proto: true, real: true, forced: isPure }, {
	  every: function every(callbackfn /* , thisArg */) {
	    var map = anObject(this);
	    var iterator = getMapIterator(map);
	    var boundFunction = bindContext(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);
	    return !iterate_1(iterator, function (key, value) {
	      if (!boundFunction(value, key, map)) return iterate_1.stop();
	    }, undefined, true, true).stopped;
	  }
	});

	// `Map.prototype.filter` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Map', proto: true, real: true, forced: isPure }, {
	  filter: function filter(callbackfn /* , thisArg */) {
	    var map = anObject(this);
	    var iterator = getMapIterator(map);
	    var boundFunction = bindContext(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);
	    var newMap = new (speciesConstructor(map, getBuiltIn('Map')))();
	    var setter = aFunction$1(newMap.set);
	    iterate_1(iterator, function (key, value) {
	      if (boundFunction(value, key, map)) setter.call(newMap, key, value);
	    }, undefined, true, true);
	    return newMap;
	  }
	});

	// `Map.prototype.find` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Map', proto: true, real: true, forced: isPure }, {
	  find: function find(callbackfn /* , thisArg */) {
	    var map = anObject(this);
	    var iterator = getMapIterator(map);
	    var boundFunction = bindContext(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);
	    return iterate_1(iterator, function (key, value) {
	      if (boundFunction(value, key, map)) return iterate_1.stop(value);
	    }, undefined, true, true).result;
	  }
	});

	// `Map.prototype.findKey` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Map', proto: true, real: true, forced: isPure }, {
	  findKey: function findKey(callbackfn /* , thisArg */) {
	    var map = anObject(this);
	    var iterator = getMapIterator(map);
	    var boundFunction = bindContext(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);
	    return iterate_1(iterator, function (key, value) {
	      if (boundFunction(value, key, map)) return iterate_1.stop(key);
	    }, undefined, true, true).result;
	  }
	});

	// https://tc39.github.io/proposal-setmap-offrom/




	var collectionFrom = function from(source /* , mapFn, thisArg */) {
	  var length = arguments.length;
	  var mapFn = length > 1 ? arguments[1] : undefined;
	  var mapping, A, n, boundFunction;
	  aFunction$1(this);
	  mapping = mapFn !== undefined;
	  if (mapping) aFunction$1(mapFn);
	  if (source == undefined) return new this();
	  A = [];
	  if (mapping) {
	    n = 0;
	    boundFunction = bindContext(mapFn, length > 2 ? arguments[2] : undefined, 2);
	    iterate_1(source, function (nextItem) {
	      A.push(boundFunction(nextItem, n++));
	    });
	  } else {
	    iterate_1(source, A.push, A);
	  }
	  return new this(A);
	};

	// `Map.from` method
	// https://tc39.github.io/proposal-setmap-offrom/#sec-map.from
	_export({ target: 'Map', stat: true }, {
	  from: collectionFrom
	});

	// `Map.groupBy` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Map', stat: true }, {
	  groupBy: function groupBy(iterable, keyDerivative) {
	    var newMap = new this();
	    aFunction$1(keyDerivative);
	    var has = aFunction$1(newMap.has);
	    var get = aFunction$1(newMap.get);
	    var set = aFunction$1(newMap.set);
	    iterate_1(iterable, function (element) {
	      var derivedKey = keyDerivative(element);
	      if (!has.call(newMap, derivedKey)) set.call(newMap, derivedKey, [element]);
	      else get.call(newMap, derivedKey).push(element);
	    });
	    return newMap;
	  }
	});

	// `SameValueZero` abstract operation
	// https://tc39.github.io/ecma262/#sec-samevaluezero
	var sameValueZero = function (x, y) {
	  // eslint-disable-next-line no-self-compare
	  return x === y || x != x && y != y;
	};

	// `Map.prototype.includes` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Map', proto: true, real: true, forced: isPure }, {
	  includes: function includes(searchElement) {
	    return iterate_1(getMapIterator(anObject(this)), function (key, value) {
	      if (sameValueZero(value, searchElement)) return iterate_1.stop();
	    }, undefined, true, true).stopped;
	  }
	});

	// `Map.keyBy` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Map', stat: true }, {
	  keyBy: function keyBy(iterable, keyDerivative) {
	    var newMap = new this();
	    aFunction$1(keyDerivative);
	    var setter = aFunction$1(newMap.set);
	    iterate_1(iterable, function (element) {
	      setter.call(newMap, keyDerivative(element), element);
	    });
	    return newMap;
	  }
	});

	// `Map.prototype.includes` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Map', proto: true, real: true, forced: isPure }, {
	  keyOf: function keyOf(searchElement) {
	    return iterate_1(getMapIterator(anObject(this)), function (key, value) {
	      if (value === searchElement) return iterate_1.stop(key);
	    }, undefined, true, true).result;
	  }
	});

	// `Map.prototype.mapKeys` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Map', proto: true, real: true, forced: isPure }, {
	  mapKeys: function mapKeys(callbackfn /* , thisArg */) {
	    var map = anObject(this);
	    var iterator = getMapIterator(map);
	    var boundFunction = bindContext(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);
	    var newMap = new (speciesConstructor(map, getBuiltIn('Map')))();
	    var setter = aFunction$1(newMap.set);
	    iterate_1(iterator, function (key, value) {
	      setter.call(newMap, boundFunction(value, key, map), value);
	    }, undefined, true, true);
	    return newMap;
	  }
	});

	// `Map.prototype.mapValues` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Map', proto: true, real: true, forced: isPure }, {
	  mapValues: function mapValues(callbackfn /* , thisArg */) {
	    var map = anObject(this);
	    var iterator = getMapIterator(map);
	    var boundFunction = bindContext(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);
	    var newMap = new (speciesConstructor(map, getBuiltIn('Map')))();
	    var setter = aFunction$1(newMap.set);
	    iterate_1(iterator, function (key, value) {
	      setter.call(newMap, key, boundFunction(value, key, map));
	    }, undefined, true, true);
	    return newMap;
	  }
	});

	// `Map.prototype.merge` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Map', proto: true, real: true, forced: isPure }, {
	  // eslint-disable-next-line no-unused-vars
	  merge: function merge(iterable /* ...iterbles */) {
	    var map = anObject(this);
	    var setter = aFunction$1(map.set);
	    var i = 0;
	    while (i < arguments.length) {
	      iterate_1(arguments[i++], setter, map, true);
	    }
	    return map;
	  }
	});

	// https://tc39.github.io/proposal-setmap-offrom/
	var collectionOf = function of() {
	  var length = arguments.length;
	  var A = new Array(length);
	  while (length--) A[length] = arguments[length];
	  return new this(A);
	};

	// `Map.of` method
	// https://tc39.github.io/proposal-setmap-offrom/#sec-map.of
	_export({ target: 'Map', stat: true }, {
	  of: collectionOf
	});

	// `Map.prototype.reduce` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Map', proto: true, real: true, forced: isPure }, {
	  reduce: function reduce(callbackfn /* , initialValue */) {
	    var map = anObject(this);
	    var iterator = getMapIterator(map);
	    var accumulator, step;
	    aFunction$1(callbackfn);
	    if (arguments.length > 1) accumulator = arguments[1];
	    else {
	      step = iterator.next();
	      if (step.done) throw TypeError('Reduce of empty map with no initial value');
	      accumulator = step.value[1];
	    }
	    iterate_1(iterator, function (key, value) {
	      accumulator = callbackfn(accumulator, value, key, map);
	    }, undefined, true, true);
	    return accumulator;
	  }
	});

	// `Set.prototype.some` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Map', proto: true, real: true, forced: isPure }, {
	  some: function some(callbackfn /* , thisArg */) {
	    var map = anObject(this);
	    var iterator = getMapIterator(map);
	    var boundFunction = bindContext(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);
	    return iterate_1(iterator, function (key, value) {
	      if (boundFunction(value, key, map)) return iterate_1.stop();
	    }, undefined, true, true).stopped;
	  }
	});

	// `Set.prototype.update` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Map', proto: true, real: true, forced: isPure }, {
	  update: function update(key, callback /* , thunk */) {
	    var map = anObject(this);
	    var length = arguments.length;
	    aFunction$1(callback);
	    var isPresentInMap = map.has(key);
	    if (!isPresentInMap && length < 3) {
	      throw TypeError('Updating absent value');
	    }
	    var value = isPresentInMap ? map.get(key) : aFunction$1(length > 2 ? arguments[2] : undefined)(key, map);
	    map.set(key, callback(value, key, map));
	    return map;
	  }
	});

	var min$9 = Math.min;
	var max$4 = Math.max;

	// `Math.clamp` method
	// https://rwaldron.github.io/proposal-math-extensions/
	_export({ target: 'Math', stat: true }, {
	  clamp: function clamp(x, lower, upper) {
	    return min$9(upper, max$4(lower, x));
	  }
	});

	// `Math.DEG_PER_RAD` constant
	// https://rwaldron.github.io/proposal-math-extensions/
	_export({ target: 'Math', stat: true }, {
	  DEG_PER_RAD: Math.PI / 180
	});

	var RAD_PER_DEG = 180 / Math.PI;

	// `Math.degrees` method
	// https://rwaldron.github.io/proposal-math-extensions/
	_export({ target: 'Math', stat: true }, {
	  degrees: function degrees(radians) {
	    return radians * RAD_PER_DEG;
	  }
	});

	// `Math.scale` method implementation
	// https://rwaldron.github.io/proposal-math-extensions/
	var mathScale = Math.scale || function scale(x, inLow, inHigh, outLow, outHigh) {
	  if (
	    arguments.length === 0
	      /* eslint-disable no-self-compare */
	      || x != x
	      || inLow != inLow
	      || inHigh != inHigh
	      || outLow != outLow
	      || outHigh != outHigh
	      /* eslint-enable no-self-compare */
	  ) return NaN;
	  if (x === Infinity || x === -Infinity) return x;
	  return (x - inLow) * (outHigh - outLow) / (inHigh - inLow) + outLow;
	};

	// `Math.fscale` method
	// https://rwaldron.github.io/proposal-math-extensions/
	_export({ target: 'Math', stat: true }, {
	  fscale: function fscale(x, inLow, inHigh, outLow, outHigh) {
	    return mathFround(mathScale(x, inLow, inHigh, outLow, outHigh));
	  }
	});

	// `Math.iaddh` method
	// https://gist.github.com/BrendanEich/4294d5c212a6d2254703
	_export({ target: 'Math', stat: true }, {
	  iaddh: function iaddh(x0, x1, y0, y1) {
	    var $x0 = x0 >>> 0;
	    var $x1 = x1 >>> 0;
	    var $y0 = y0 >>> 0;
	    return $x1 + (y1 >>> 0) + (($x0 & $y0 | ($x0 | $y0) & ~($x0 + $y0 >>> 0)) >>> 31) | 0;
	  }
	});

	// `Math.imulh` method
	// https://gist.github.com/BrendanEich/4294d5c212a6d2254703
	_export({ target: 'Math', stat: true }, {
	  imulh: function imulh(u, v) {
	    var UINT16 = 0xFFFF;
	    var $u = +u;
	    var $v = +v;
	    var u0 = $u & UINT16;
	    var v0 = $v & UINT16;
	    var u1 = $u >> 16;
	    var v1 = $v >> 16;
	    var t = (u1 * v0 >>> 0) + (u0 * v0 >>> 16);
	    return u1 * v1 + (t >> 16) + ((u0 * v1 >>> 0) + (t & UINT16) >> 16);
	  }
	});

	// `Math.isubh` method
	// https://gist.github.com/BrendanEich/4294d5c212a6d2254703
	_export({ target: 'Math', stat: true }, {
	  isubh: function isubh(x0, x1, y0, y1) {
	    var $x0 = x0 >>> 0;
	    var $x1 = x1 >>> 0;
	    var $y0 = y0 >>> 0;
	    return $x1 - (y1 >>> 0) - ((~$x0 & $y0 | ~($x0 ^ $y0) & $x0 - $y0 >>> 0) >>> 31) | 0;
	  }
	});

	// `Math.RAD_PER_DEG` constant
	// https://rwaldron.github.io/proposal-math-extensions/
	_export({ target: 'Math', stat: true }, {
	  RAD_PER_DEG: 180 / Math.PI
	});

	var DEG_PER_RAD = Math.PI / 180;

	// `Math.radians` method
	// https://rwaldron.github.io/proposal-math-extensions/
	_export({ target: 'Math', stat: true }, {
	  radians: function radians(degrees) {
	    return degrees * DEG_PER_RAD;
	  }
	});

	// `Math.scale` method
	// https://rwaldron.github.io/proposal-math-extensions/
	_export({ target: 'Math', stat: true }, {
	  scale: mathScale
	});

	var SEEDED_RANDOM = 'Seeded Random';
	var SEEDED_RANDOM_GENERATOR = SEEDED_RANDOM + ' Generator';
	var setInternalState$6 = internalState.set;
	var getInternalState$4 = internalState.getterFor(SEEDED_RANDOM_GENERATOR);
	var SEED_TYPE_ERROR = 'Math.seededPRNG() argument should have a "seed" field with a finite value.';

	var $SeededRandomGenerator = createIteratorConstructor(function SeededRandomGenerator(seed) {
	  setInternalState$6(this, {
	    type: SEEDED_RANDOM_GENERATOR,
	    seed: seed % 2147483647
	  });
	}, SEEDED_RANDOM, function next() {
	  var state = getInternalState$4(this);
	  var seed = state.seed = (state.seed * 1103515245 + 12345) % 2147483647;
	  return { value: (seed & 1073741823) / 1073741823, done: false };
	});

	// `Math.seededPRNG` method
	// https://github.com/tc39/proposal-seeded-random
	// based on https://github.com/tc39/proposal-seeded-random/blob/78b8258835b57fc2100d076151ab506bc3202ae6/demo.html
	_export({ target: 'Math', stat: true, forced: true }, {
	  seededPRNG: function seededPRNG(it) {
	    var seed = anObject(it).seed;
	    if (!numberIsFinite(seed)) throw TypeError(SEED_TYPE_ERROR);
	    return new $SeededRandomGenerator(seed);
	  }
	});

	// `Math.signbit` method
	// https://github.com/tc39/proposal-Math.signbit
	_export({ target: 'Math', stat: true }, {
	  signbit: function signbit(x) {
	    // eslint-disable-next-line no-self-compare
	    return (x = +x) != x ? x : x == 0 ? 1 / x == Infinity : x > 0;
	  }
	});

	// `Math.umulh` method
	// https://gist.github.com/BrendanEich/4294d5c212a6d2254703
	_export({ target: 'Math', stat: true }, {
	  umulh: function umulh(u, v) {
	    var UINT16 = 0xFFFF;
	    var $u = +u;
	    var $v = +v;
	    var u0 = $u & UINT16;
	    var v0 = $v & UINT16;
	    var u1 = $u >>> 16;
	    var v1 = $v >>> 16;
	    var t = (u1 * v0 >>> 0) + (u0 * v0 >>> 16);
	    return u1 * v1 + (t >>> 16) + ((u0 * v1 >>> 0) + (t & UINT16) >>> 16);
	  }
	});

	var INVALID_NUMBER_REPRESENTATION = 'Invalid number representation';
	var INVALID_RADIX = 'Invalid radix';
	var valid = /^[\da-z]+$/;

	// `Number.fromString` method
	// https://github.com/tc39/proposal-number-fromstring
	_export({ target: 'Number', stat: true }, {
	  fromString: function fromString(string, radix) {
	    var sign = 1;
	    var R, mathNum;
	    if (typeof string != 'string') throw TypeError(INVALID_NUMBER_REPRESENTATION);
	    if (!string.length) throw SyntaxError(INVALID_NUMBER_REPRESENTATION);
	    if (string.charAt(0) == '-') {
	      sign = -1;
	      string = string.slice(1);
	      if (!string.length) throw SyntaxError(INVALID_NUMBER_REPRESENTATION);
	    }
	    R = radix === undefined ? 10 : toInteger(radix);
	    if (R < 2 || R > 36) throw RangeError(INVALID_RADIX);
	    if (!valid.test(string) || (mathNum = _parseInt(string, R)).toString(R) !== string) {
	      throw SyntaxError(INVALID_NUMBER_REPRESENTATION);
	    }
	    return sign * mathNum;
	  }
	});

	// https://github.com/tc39/proposal-observable







	var defineProperty$a = objectDefineProperty.f;








	var OBSERVABLE = wellKnownSymbol('observable');
	var getInternalState$5 = internalState.get;
	var setInternalState$7 = internalState.set;

	var getMethod = function (fn) {
	  return fn == null ? undefined : aFunction$1(fn);
	};

	var cleanupSubscription = function (subscriptionState) {
	  var cleanup = subscriptionState.cleanup;
	  if (cleanup) {
	    subscriptionState.cleanup = undefined;
	    try {
	      cleanup();
	    } catch (error) {
	      hostReportErrors(error);
	    }
	  }
	};

	var subscriptionClosed = function (subscriptionState) {
	  return subscriptionState.observer === undefined;
	};

	var close = function (subscription, subscriptionState) {
	  if (!descriptors) {
	    subscription.closed = true;
	    var subscriptionObserver = subscriptionState.subscriptionObserver;
	    if (subscriptionObserver) subscriptionObserver.closed = true;
	  } subscriptionState.observer = undefined;
	};

	var Subscription = function (observer, subscriber) {
	  var subscriptionState = setInternalState$7(this, {
	    cleanup: undefined,
	    observer: anObject(observer),
	    subscriptionObserver: undefined
	  });
	  var start;
	  if (!descriptors) this.closed = false;
	  try {
	    if (start = getMethod(observer.start)) start.call(observer, this);
	  } catch (error) {
	    hostReportErrors(error);
	  }
	  if (subscriptionClosed(subscriptionState)) return;
	  var subscriptionObserver = subscriptionState.subscriptionObserver = new SubscriptionObserver(this);
	  try {
	    var cleanup = subscriber(subscriptionObserver);
	    var subscription = cleanup;
	    if (cleanup != null) subscriptionState.cleanup = typeof cleanup.unsubscribe === 'function'
	      ? function () { subscription.unsubscribe(); }
	      : aFunction$1(cleanup);
	  } catch (error) {
	    subscriptionObserver.error(error);
	    return;
	  } if (subscriptionClosed(subscriptionState)) cleanupSubscription(subscriptionState);
	};

	Subscription.prototype = redefineAll({}, {
	  unsubscribe: function unsubscribe() {
	    var subscriptionState = getInternalState$5(this);
	    if (!subscriptionClosed(subscriptionState)) {
	      close(this, subscriptionState);
	      cleanupSubscription(subscriptionState);
	    }
	  }
	});

	if (descriptors) defineProperty$a(Subscription.prototype, 'closed', {
	  configurable: true,
	  get: function () {
	    return subscriptionClosed(getInternalState$5(this));
	  }
	});

	var SubscriptionObserver = function (subscription) {
	  setInternalState$7(this, { subscription: subscription });
	  if (!descriptors) this.closed = false;
	};

	SubscriptionObserver.prototype = redefineAll({}, {
	  next: function next(value) {
	    var subscriptionState = getInternalState$5(getInternalState$5(this).subscription);
	    if (!subscriptionClosed(subscriptionState)) {
	      var observer = subscriptionState.observer;
	      try {
	        var nextMethod = getMethod(observer.next);
	        if (nextMethod) nextMethod.call(observer, value);
	      } catch (error) {
	        hostReportErrors(error);
	      }
	    }
	  },
	  error: function error(value) {
	    var subscription = getInternalState$5(this).subscription;
	    var subscriptionState = getInternalState$5(subscription);
	    if (!subscriptionClosed(subscriptionState)) {
	      var observer = subscriptionState.observer;
	      close(subscription, subscriptionState);
	      try {
	        var errorMethod = getMethod(observer.error);
	        if (errorMethod) errorMethod.call(observer, value);
	        else hostReportErrors(value);
	      } catch (err) {
	        hostReportErrors(err);
	      } cleanupSubscription(subscriptionState);
	    }
	  },
	  complete: function complete() {
	    var subscription = getInternalState$5(this).subscription;
	    var subscriptionState = getInternalState$5(subscription);
	    if (!subscriptionClosed(subscriptionState)) {
	      var observer = subscriptionState.observer;
	      close(subscription, subscriptionState);
	      try {
	        var completeMethod = getMethod(observer.complete);
	        if (completeMethod) completeMethod.call(observer);
	      } catch (error) {
	        hostReportErrors(error);
	      } cleanupSubscription(subscriptionState);
	    }
	  }
	});

	if (descriptors) defineProperty$a(SubscriptionObserver.prototype, 'closed', {
	  configurable: true,
	  get: function () {
	    return subscriptionClosed(getInternalState$5(getInternalState$5(this).subscription));
	  }
	});

	var $Observable = function Observable(subscriber) {
	  anInstance(this, $Observable, 'Observable');
	  setInternalState$7(this, { subscriber: aFunction$1(subscriber) });
	};

	redefineAll($Observable.prototype, {
	  subscribe: function subscribe(observer) {
	    var length = arguments.length;
	    return new Subscription(typeof observer === 'function' ? {
	      next: observer,
	      error: length > 1 ? arguments[1] : undefined,
	      complete: length > 2 ? arguments[2] : undefined
	    } : isObject(observer) ? observer : {}, getInternalState$5(this).subscriber);
	  }
	});

	redefineAll($Observable, {
	  from: function from(x) {
	    var C = typeof this === 'function' ? this : $Observable;
	    var observableMethod = getMethod(anObject(x)[OBSERVABLE]);
	    if (observableMethod) {
	      var observable = anObject(observableMethod.call(x));
	      return observable.constructor === C ? observable : new C(function (observer) {
	        return observable.subscribe(observer);
	      });
	    }
	    var iterator = getIterator(x);
	    return new C(function (observer) {
	      iterate_1(iterator, function (it) {
	        observer.next(it);
	        if (observer.closed) return iterate_1.stop();
	      }, undefined, false, true);
	      observer.complete();
	    });
	  },
	  of: function of() {
	    var C = typeof this === 'function' ? this : $Observable;
	    var length = arguments.length;
	    var items = new Array(length);
	    var index = 0;
	    while (index < length) items[index] = arguments[index++];
	    return new C(function (observer) {
	      for (var i = 0; i < length; i++) {
	        observer.next(items[i]);
	        if (observer.closed) return;
	      } observer.complete();
	    });
	  }
	});

	hide($Observable.prototype, OBSERVABLE, function () { return this; });

	_export({ global: true }, {
	  Observable: $Observable
	});

	setSpecies('Observable');

	// `Promise.allSettled` method
	// https://github.com/tc39/proposal-promise-allSettled
	_export({ target: 'Promise', stat: true }, {
	  allSettled: function allSettled(iterable) {
	    var C = this;
	    var capability = newPromiseCapability.f(C);
	    var resolve = capability.resolve;
	    var reject = capability.reject;
	    var result = perform(function () {
	      var promiseResolve = aFunction$1(C.resolve);
	      var values = [];
	      var counter = 0;
	      var remaining = 1;
	      iterate_1(iterable, function (promise) {
	        var index = counter++;
	        var alreadyCalled = false;
	        values.push(undefined);
	        remaining++;
	        promiseResolve.call(C, promise).then(function (value) {
	          if (alreadyCalled) return;
	          alreadyCalled = true;
	          values[index] = { status: 'fulfilled', value: value };
	          --remaining || resolve(values);
	        }, function (e) {
	          if (alreadyCalled) return;
	          alreadyCalled = true;
	          values[index] = { status: 'rejected', reason: e };
	          --remaining || resolve(values);
	        });
	      });
	      --remaining || resolve(values);
	    });
	    if (result.error) reject(result.value);
	    return capability.promise;
	  }
	});

	var PROMISE_ANY_ERROR = 'No one promise resolved';

	// `Promise.any` method
	// https://github.com/tc39/proposal-promise-any
	_export({ target: 'Promise', stat: true }, {
	  any: function any(iterable) {
	    var C = this;
	    var capability = newPromiseCapability.f(C);
	    var resolve = capability.resolve;
	    var reject = capability.reject;
	    var result = perform(function () {
	      var promiseResolve = aFunction$1(C.resolve);
	      var errors = [];
	      var counter = 0;
	      var remaining = 1;
	      var alreadyResolved = false;
	      iterate_1(iterable, function (promise) {
	        var index = counter++;
	        var alreadyRejected = false;
	        errors.push(undefined);
	        remaining++;
	        promiseResolve.call(C, promise).then(function (value) {
	          if (alreadyRejected || alreadyResolved) return;
	          alreadyResolved = true;
	          resolve(value);
	        }, function (e) {
	          if (alreadyRejected || alreadyResolved) return;
	          alreadyRejected = true;
	          errors[index] = e;
	          --remaining || reject(new (getBuiltIn('AggregateError'))(errors, PROMISE_ANY_ERROR));
	        });
	      });
	      --remaining || reject(new (getBuiltIn('AggregateError'))(errors, PROMISE_ANY_ERROR));
	    });
	    if (result.error) reject(result.value);
	    return capability.promise;
	  }
	});

	// `Promise.try` method
	// https://github.com/tc39/proposal-promise-try
	_export({ target: 'Promise', stat: true }, {
	  'try': function (callbackfn) {
	    var promiseCapability = newPromiseCapability.f(this);
	    var result = perform(callbackfn);
	    (result.error ? promiseCapability.reject : promiseCapability.resolve)(result.value);
	    return promiseCapability.promise;
	  }
	});

	// TODO: in core-js@4, move /modules/ dependencies to public entries for better optimization by tools like `preset-env`




	var metadata = shared('metadata');
	var store$2 = metadata.store || (metadata.store = new es_weakMap());

	var getOrCreateMetadataMap = function (target, targetKey, create) {
	  var targetMetadata = store$2.get(target);
	  if (!targetMetadata) {
	    if (!create) return;
	    store$2.set(target, targetMetadata = new es_map());
	  }
	  var keyMetadata = targetMetadata.get(targetKey);
	  if (!keyMetadata) {
	    if (!create) return;
	    targetMetadata.set(targetKey, keyMetadata = new es_map());
	  } return keyMetadata;
	};

	var ordinaryHasOwnMetadata = function (MetadataKey, O, P) {
	  var metadataMap = getOrCreateMetadataMap(O, P, false);
	  return metadataMap === undefined ? false : metadataMap.has(MetadataKey);
	};

	var ordinaryGetOwnMetadata = function (MetadataKey, O, P) {
	  var metadataMap = getOrCreateMetadataMap(O, P, false);
	  return metadataMap === undefined ? undefined : metadataMap.get(MetadataKey);
	};

	var ordinaryDefineOwnMetadata = function (MetadataKey, MetadataValue, O, P) {
	  getOrCreateMetadataMap(O, P, true).set(MetadataKey, MetadataValue);
	};

	var ordinaryOwnMetadataKeys = function (target, targetKey) {
	  var metadataMap = getOrCreateMetadataMap(target, targetKey, false);
	  var keys = [];
	  if (metadataMap) metadataMap.forEach(function (_, key) { keys.push(key); });
	  return keys;
	};

	var toMetadataKey = function (it) {
	  return it === undefined || typeof it == 'symbol' ? it : String(it);
	};

	var reflectMetadata = {
	  store: store$2,
	  getMap: getOrCreateMetadataMap,
	  has: ordinaryHasOwnMetadata,
	  get: ordinaryGetOwnMetadata,
	  set: ordinaryDefineOwnMetadata,
	  keys: ordinaryOwnMetadataKeys,
	  toKey: toMetadataKey
	};

	var toMetadataKey$1 = reflectMetadata.toKey;
	var ordinaryDefineOwnMetadata$1 = reflectMetadata.set;

	// `Reflect.defineMetadata` method
	// https://github.com/rbuckton/reflect-metadata
	_export({ target: 'Reflect', stat: true }, {
	  defineMetadata: function defineMetadata(metadataKey, metadataValue, target /* , targetKey */) {
	    var targetKey = arguments.length < 4 ? undefined : toMetadataKey$1(arguments[3]);
	    ordinaryDefineOwnMetadata$1(metadataKey, metadataValue, anObject(target), targetKey);
	  }
	});

	var toMetadataKey$2 = reflectMetadata.toKey;
	var getOrCreateMetadataMap$1 = reflectMetadata.getMap;
	var store$3 = reflectMetadata.store;

	// `Reflect.deleteMetadata` method
	// https://github.com/rbuckton/reflect-metadata
	_export({ target: 'Reflect', stat: true }, {
	  deleteMetadata: function deleteMetadata(metadataKey, target /* , targetKey */) {
	    var targetKey = arguments.length < 3 ? undefined : toMetadataKey$2(arguments[2]);
	    var metadataMap = getOrCreateMetadataMap$1(anObject(target), targetKey, false);
	    if (metadataMap === undefined || !metadataMap['delete'](metadataKey)) return false;
	    if (metadataMap.size) return true;
	    var targetMetadata = store$3.get(target);
	    targetMetadata['delete'](targetKey);
	    return !!targetMetadata.size || store$3['delete'](target);
	  }
	});

	var ordinaryHasOwnMetadata$1 = reflectMetadata.has;
	var ordinaryGetOwnMetadata$1 = reflectMetadata.get;
	var toMetadataKey$3 = reflectMetadata.toKey;

	var ordinaryGetMetadata = function (MetadataKey, O, P) {
	  var hasOwn = ordinaryHasOwnMetadata$1(MetadataKey, O, P);
	  if (hasOwn) return ordinaryGetOwnMetadata$1(MetadataKey, O, P);
	  var parent = objectGetPrototypeOf(O);
	  return parent !== null ? ordinaryGetMetadata(MetadataKey, parent, P) : undefined;
	};

	// `Reflect.getMetadata` method
	// https://github.com/rbuckton/reflect-metadata
	_export({ target: 'Reflect', stat: true }, {
	  getMetadata: function getMetadata(metadataKey, target /* , targetKey */) {
	    var targetKey = arguments.length < 3 ? undefined : toMetadataKey$3(arguments[2]);
	    return ordinaryGetMetadata(metadataKey, anObject(target), targetKey);
	  }
	});

	// TODO: in core-js@4, move /modules/ dependencies to public entries for better optimization by tools like `preset-env`






	var ordinaryOwnMetadataKeys$1 = reflectMetadata.keys;
	var toMetadataKey$4 = reflectMetadata.toKey;

	var from = function (iter) {
	  var result = [];
	  iterate_1(iter, result.push, result);
	  return result;
	};

	var ordinaryMetadataKeys = function (O, P) {
	  var oKeys = ordinaryOwnMetadataKeys$1(O, P);
	  var parent = objectGetPrototypeOf(O);
	  if (parent === null) return oKeys;
	  var pKeys = ordinaryMetadataKeys(parent, P);
	  return pKeys.length ? oKeys.length ? from(new es_set(oKeys.concat(pKeys))) : pKeys : oKeys;
	};

	// `Reflect.getMetadataKeys` method
	// https://github.com/rbuckton/reflect-metadata
	_export({ target: 'Reflect', stat: true }, {
	  getMetadataKeys: function getMetadataKeys(target /* , targetKey */) {
	    var targetKey = arguments.length < 2 ? undefined : toMetadataKey$4(arguments[1]);
	    return ordinaryMetadataKeys(anObject(target), targetKey);
	  }
	});

	var ordinaryGetOwnMetadata$2 = reflectMetadata.get;
	var toMetadataKey$5 = reflectMetadata.toKey;

	// `Reflect.getOwnMetadata` method
	// https://github.com/rbuckton/reflect-metadata
	_export({ target: 'Reflect', stat: true }, {
	  getOwnMetadata: function getOwnMetadata(metadataKey, target /* , targetKey */) {
	    var targetKey = arguments.length < 3 ? undefined : toMetadataKey$5(arguments[2]);
	    return ordinaryGetOwnMetadata$2(metadataKey, anObject(target), targetKey);
	  }
	});

	var ordinaryOwnMetadataKeys$2 = reflectMetadata.keys;
	var toMetadataKey$6 = reflectMetadata.toKey;

	// `Reflect.getOwnMetadataKeys` method
	// https://github.com/rbuckton/reflect-metadata
	_export({ target: 'Reflect', stat: true }, {
	  getOwnMetadataKeys: function getOwnMetadataKeys(target /* , targetKey */) {
	    var targetKey = arguments.length < 2 ? undefined : toMetadataKey$6(arguments[1]);
	    return ordinaryOwnMetadataKeys$2(anObject(target), targetKey);
	  }
	});

	var ordinaryHasOwnMetadata$2 = reflectMetadata.has;
	var toMetadataKey$7 = reflectMetadata.toKey;

	var ordinaryHasMetadata = function (MetadataKey, O, P) {
	  var hasOwn = ordinaryHasOwnMetadata$2(MetadataKey, O, P);
	  if (hasOwn) return true;
	  var parent = objectGetPrototypeOf(O);
	  return parent !== null ? ordinaryHasMetadata(MetadataKey, parent, P) : false;
	};

	// `Reflect.hasMetadata` method
	// https://github.com/rbuckton/reflect-metadata
	_export({ target: 'Reflect', stat: true }, {
	  hasMetadata: function hasMetadata(metadataKey, target /* , targetKey */) {
	    var targetKey = arguments.length < 3 ? undefined : toMetadataKey$7(arguments[2]);
	    return ordinaryHasMetadata(metadataKey, anObject(target), targetKey);
	  }
	});

	var ordinaryHasOwnMetadata$3 = reflectMetadata.has;
	var toMetadataKey$8 = reflectMetadata.toKey;

	// `Reflect.hasOwnMetadata` method
	// https://github.com/rbuckton/reflect-metadata
	_export({ target: 'Reflect', stat: true }, {
	  hasOwnMetadata: function hasOwnMetadata(metadataKey, target /* , targetKey */) {
	    var targetKey = arguments.length < 3 ? undefined : toMetadataKey$8(arguments[2]);
	    return ordinaryHasOwnMetadata$3(metadataKey, anObject(target), targetKey);
	  }
	});

	var toMetadataKey$9 = reflectMetadata.toKey;
	var ordinaryDefineOwnMetadata$2 = reflectMetadata.set;

	// `Reflect.metadata` method
	// https://github.com/rbuckton/reflect-metadata
	_export({ target: 'Reflect', stat: true }, {
	  metadata: function metadata(metadataKey, metadataValue) {
	    return function decorator(target, key) {
	      ordinaryDefineOwnMetadata$2(metadataKey, metadataValue, anObject(target), toMetadataKey$9(key));
	    };
	  }
	});

	// https://github.com/tc39/collection-methods
	var collectionAddAll = function (/* ...elements */) {
	  var set = anObject(this);
	  var adder = aFunction$1(set.add);
	  for (var k = 0, len = arguments.length; k < len; k++) {
	    adder.call(set, arguments[k]);
	  }
	  return set;
	};

	// `Set.prototype.addAll` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Set', proto: true, real: true, forced: isPure }, {
	  addAll: function addAll(/* ...elements */) {
	    return collectionAddAll.apply(this, arguments);
	  }
	});

	// `Set.prototype.deleteAll` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Set', proto: true, real: true, forced: isPure }, {
	  deleteAll: function deleteAll(/* ...elements */) {
	    return collectionDeleteAll.apply(this, arguments);
	  }
	});

	// `Set.prototype.difference` method
	// https://github.com/tc39/proposal-set-methods
	_export({ target: 'Set', proto: true, real: true, forced: isPure }, {
	  difference: function difference(iterable) {
	    var set = anObject(this);
	    var newSet = new (speciesConstructor(set, getBuiltIn('Set')))(set);
	    var remover = aFunction$1(newSet['delete']);
	    iterate_1(iterable, function (value) {
	      remover.call(newSet, value);
	    });
	    return newSet;
	  }
	});

	var getSetIterator = function (it) {
	  // eslint-disable-next-line no-undef
	  return Set.prototype.values.call(it);
	};

	// `Set.prototype.every` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Set', proto: true, real: true, forced: isPure }, {
	  every: function every(callbackfn /* , thisArg */) {
	    var set = anObject(this);
	    var iterator = getSetIterator(set);
	    var boundFunction = bindContext(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);
	    return !iterate_1(iterator, function (value) {
	      if (!boundFunction(value, value, set)) return iterate_1.stop();
	    }, undefined, false, true).stopped;
	  }
	});

	// `Set.prototype.filter` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Set', proto: true, real: true, forced: isPure }, {
	  filter: function filter(callbackfn /* , thisArg */) {
	    var set = anObject(this);
	    var iterator = getSetIterator(set);
	    var boundFunction = bindContext(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);
	    var newSet = new (speciesConstructor(set, getBuiltIn('Set')))();
	    var adder = aFunction$1(newSet.add);
	    iterate_1(iterator, function (value) {
	      if (boundFunction(value, value, set)) adder.call(newSet, value);
	    }, undefined, false, true);
	    return newSet;
	  }
	});

	// `Set.prototype.find` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Set', proto: true, real: true, forced: isPure }, {
	  find: function find(callbackfn /* , thisArg */) {
	    var set = anObject(this);
	    var iterator = getSetIterator(set);
	    var boundFunction = bindContext(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);
	    return iterate_1(iterator, function (value) {
	      if (boundFunction(value, value, set)) return iterate_1.stop(value);
	    }, undefined, false, true).result;
	  }
	});

	// `Set.from` method
	// https://tc39.github.io/proposal-setmap-offrom/#sec-set.from
	_export({ target: 'Set', stat: true }, {
	  from: collectionFrom
	});

	// `Set.prototype.intersection` method
	// https://github.com/tc39/proposal-set-methods
	_export({ target: 'Set', proto: true, real: true, forced: isPure }, {
	  intersection: function intersection(iterable) {
	    var set = anObject(this);
	    var newSet = new (speciesConstructor(set, getBuiltIn('Set')))();
	    var hasCheck = aFunction$1(set.has);
	    var adder = aFunction$1(newSet.add);
	    iterate_1(iterable, function (value) {
	      if (hasCheck.call(set, value)) adder.call(newSet, value);
	    });
	    return newSet;
	  }
	});

	// `Set.prototype.isDisjointFrom` method
	// https://tc39.github.io/proposal-set-methods/#Set.prototype.isDisjointFrom
	_export({ target: 'Set', proto: true, real: true, forced: isPure }, {
	  isDisjointFrom: function isDisjointFrom(iterable) {
	    var set = anObject(this);
	    var hasCheck = aFunction$1(set.has);
	    return !iterate_1(iterable, function (value) {
	      if (hasCheck.call(set, value) === true) return iterate_1.stop();
	    }).stopped;
	  }
	});

	// `Set.prototype.isSubsetOf` method
	// https://tc39.github.io/proposal-set-methods/#Set.prototype.isSubsetOf
	_export({ target: 'Set', proto: true, real: true, forced: isPure }, {
	  isSubsetOf: function isSubsetOf(iterable) {
	    var iterator = getIterator(this);
	    var otherSet = anObject(iterable);
	    var hasCheck = otherSet.has;
	    if (typeof hasCheck != 'function') {
	      otherSet = new (getBuiltIn('Set'))(iterable);
	      hasCheck = aFunction$1(otherSet.has);
	    }
	    return !iterate_1(iterator, function (value) {
	      if (hasCheck.call(otherSet, value) === false) return iterate_1.stop();
	    }, undefined, false, true).stopped;
	  }
	});

	// `Set.prototype.isSupersetOf` method
	// https://tc39.github.io/proposal-set-methods/#Set.prototype.isSupersetOf
	_export({ target: 'Set', proto: true, real: true, forced: isPure }, {
	  isSupersetOf: function isSupersetOf(iterable) {
	    var set = anObject(this);
	    var hasCheck = aFunction$1(set.has);
	    return !iterate_1(iterable, function (value) {
	      if (hasCheck.call(set, value) === false) return iterate_1.stop();
	    }).stopped;
	  }
	});

	// `Set.prototype.join` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Set', proto: true, real: true, forced: isPure }, {
	  join: function join(separator) {
	    var set = anObject(this);
	    var iterator = getSetIterator(set);
	    var sep = separator === undefined ? ',' : String(separator);
	    var result = [];
	    iterate_1(iterator, result.push, result, false, true);
	    return result.join(sep);
	  }
	});

	// `Set.prototype.map` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Set', proto: true, real: true, forced: isPure }, {
	  map: function map(callbackfn /* , thisArg */) {
	    var set = anObject(this);
	    var iterator = getSetIterator(set);
	    var boundFunction = bindContext(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);
	    var newSet = new (speciesConstructor(set, getBuiltIn('Set')))();
	    var adder = aFunction$1(newSet.add);
	    iterate_1(iterator, function (value) {
	      adder.call(newSet, boundFunction(value, value, set));
	    }, undefined, false, true);
	    return newSet;
	  }
	});

	// `Set.of` method
	// https://tc39.github.io/proposal-setmap-offrom/#sec-set.of
	_export({ target: 'Set', stat: true }, {
	  of: collectionOf
	});

	// `Set.prototype.reduce` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Set', proto: true, real: true, forced: isPure }, {
	  reduce: function reduce(callbackfn /* , initialValue */) {
	    var set = anObject(this);
	    var iterator = getSetIterator(set);
	    var accumulator, step;
	    aFunction$1(callbackfn);
	    if (arguments.length > 1) accumulator = arguments[1];
	    else {
	      step = iterator.next();
	      if (step.done) throw TypeError('Reduce of empty set with no initial value');
	      accumulator = step.value;
	    }
	    iterate_1(iterator, function (value) {
	      accumulator = callbackfn(accumulator, value, value, set);
	    }, undefined, false, true);
	    return accumulator;
	  }
	});

	// `Set.prototype.some` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'Set', proto: true, real: true, forced: isPure }, {
	  some: function some(callbackfn /* , thisArg */) {
	    var set = anObject(this);
	    var iterator = getSetIterator(set);
	    var boundFunction = bindContext(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);
	    return iterate_1(iterator, function (value) {
	      if (boundFunction(value, value, set)) return iterate_1.stop();
	    }, undefined, false, true).stopped;
	  }
	});

	// `Set.prototype.symmetricDifference` method
	// https://github.com/tc39/proposal-set-methods
	_export({ target: 'Set', proto: true, real: true, forced: isPure }, {
	  symmetricDifference: function symmetricDifference(iterable) {
	    var set = anObject(this);
	    var newSet = new (speciesConstructor(set, getBuiltIn('Set')))(set);
	    var remover = aFunction$1(newSet['delete']);
	    var adder = aFunction$1(newSet.add);
	    iterate_1(iterable, function (value) {
	      remover.call(newSet, value) || adder.call(newSet, value);
	    });
	    return newSet;
	  }
	});

	// `Set.prototype.union` method
	// https://github.com/tc39/proposal-set-methods
	_export({ target: 'Set', proto: true, real: true, forced: isPure }, {
	  union: function union(iterable) {
	    var set = anObject(this);
	    var newSet = new (speciesConstructor(set, getBuiltIn('Set')))(set);
	    iterate_1(iterable, aFunction$1(newSet.add), newSet);
	    return newSet;
	  }
	});

	var charAt$2 = stringMultibyte.charAt;

	// `String.prototype.at` method
	// https://github.com/mathiasbynens/String.prototype.at
	_export({ target: 'String', proto: true }, {
	  at: function at(pos) {
	    return charAt$2(this, pos);
	  }
	});

	var codeAt$1 = stringMultibyte.codeAt;
	var charAt$3 = stringMultibyte.charAt;
	var STRING_ITERATOR$1 = 'String Iterator';
	var setInternalState$8 = internalState.set;
	var getInternalState$6 = internalState.getterFor(STRING_ITERATOR$1);

	// TODO: unify with String#@@iterator
	var $StringIterator = createIteratorConstructor(function StringIterator(string) {
	  setInternalState$8(this, {
	    type: STRING_ITERATOR$1,
	    string: string,
	    index: 0
	  });
	}, 'String', function next() {
	  var state = getInternalState$6(this);
	  var string = state.string;
	  var index = state.index;
	  var point;
	  if (index >= string.length) return { value: undefined, done: true };
	  point = charAt$3(string, index);
	  state.index += point.length;
	  return { value: { codePoint: codeAt$1(point, 0), position: index }, done: false };
	});

	// `String.prototype.codePoints` method
	// https://github.com/tc39/proposal-string-prototype-codepoints
	_export({ target: 'String', proto: true }, {
	  codePoints: function codePoints() {
	    return new $StringIterator(String(requireObjectCoercible(this)));
	  }
	});

	// `Symbol.matchAll` well-known symbol
	defineWellKnownSymbol('matchAll');

	var MATCH_ALL = wellKnownSymbol('matchAll');
	var REGEXP_STRING = 'RegExp String';
	var REGEXP_STRING_ITERATOR = REGEXP_STRING + ' Iterator';
	var setInternalState$9 = internalState.set;
	var getInternalState$7 = internalState.getterFor(REGEXP_STRING_ITERATOR);
	var RegExpPrototype$2 = RegExp.prototype;
	var regExpBuiltinExec = RegExpPrototype$2.exec;

	var regExpExec = function (R, S) {
	  var exec = R.exec;
	  var result;
	  if (typeof exec == 'function') {
	    result = exec.call(R, S);
	    if (typeof result != 'object') throw TypeError('Incorrect exec result');
	    return result;
	  } return regExpBuiltinExec.call(R, S);
	};

	// eslint-disable-next-line max-len
	var $RegExpStringIterator = createIteratorConstructor(function RegExpStringIterator(regexp, string, global, fullUnicode) {
	  setInternalState$9(this, {
	    type: REGEXP_STRING_ITERATOR,
	    regexp: regexp,
	    string: string,
	    global: global,
	    unicode: fullUnicode,
	    done: false
	  });
	}, REGEXP_STRING, function next() {
	  var state = getInternalState$7(this);
	  if (state.done) return { value: undefined, done: true };
	  var R = state.regexp;
	  var S = state.string;
	  var match = regExpExec(R, S);
	  if (match === null) return { value: undefined, done: state.done = true };
	  if (state.global) {
	    if (String(match[0]) == '') R.lastIndex = advanceStringIndex(S, toLength(R.lastIndex), state.unicode);
	    return { value: match, done: false };
	  }
	  state.done = true;
	  return { value: match, done: false };
	});

	var $matchAll = function (string) {
	  var R = anObject(this);
	  var S = String(string);
	  var C, flagsValue, flags, matcher, global, fullUnicode;
	  C = speciesConstructor(R, RegExp);
	  flagsValue = R.flags;
	  if (flagsValue === undefined && R instanceof RegExp && !('flags' in RegExpPrototype$2)) {
	    flagsValue = regexpFlags.call(R);
	  }
	  flags = flagsValue === undefined ? '' : String(flagsValue);
	  matcher = new C(C === RegExp ? R.source : R, flags);
	  global = !!~flags.indexOf('g');
	  fullUnicode = !!~flags.indexOf('u');
	  matcher.lastIndex = toLength(R.lastIndex);
	  return new $RegExpStringIterator(matcher, S, global, fullUnicode);
	};

	// `String.prototype.matchAll` method
	// https://github.com/tc39/proposal-string-matchall
	_export({ target: 'String', proto: true }, {
	  matchAll: function matchAll(regexp) {
	    var O = requireObjectCoercible(this);
	    var S, matcher, rx;
	    if (regexp != null) {
	      matcher = regexp[MATCH_ALL];
	      if (matcher === undefined && isPure && classof(regexp) == 'RegExp') matcher = $matchAll;
	      if (matcher != null) return aFunction$1(matcher).call(regexp, O);
	    }
	    S = String(O);
	    rx = new RegExp(regexp, 'g');
	    return rx[MATCH_ALL](S);
	  }
	});

	MATCH_ALL in RegExpPrototype$2 || hide(RegExpPrototype$2, MATCH_ALL, $matchAll);

	var REPLACE_ALL = wellKnownSymbol('replaceAll');
	var RegExpPrototype$3 = RegExp.prototype;

	var $replaceAll = function (string, replaceValue) {
	  var rx = anObject(this);
	  var flags = String('flags' in RegExpPrototype$3 ? rx.flags : regexpFlags.call(rx));
	  if (!~flags.indexOf('g')) {
	    rx = new (speciesConstructor(rx, RegExp))(rx.source, flags + 'g');
	  }
	  return String(string).replace(rx, replaceValue);
	};

	// `String.prototype.replaceAll` method
	// https://github.com/tc39/proposal-string-replace-all
	_export({ target: 'String', proto: true }, {
	  replaceAll: function replaceAll(searchValue, replaceValue) {
	    var O = requireObjectCoercible(this);
	    var replacer, string, searchString, template, result, index;
	    if (searchValue != null) {
	      replacer = searchValue[REPLACE_ALL];
	      if (replacer !== undefined) {
	        return replacer.call(searchValue, O, replaceValue);
	      }
	    }
	    string = String(O);
	    searchString = String(searchValue);
	    template = string.split(searchString);
	    if (typeof replaceValue !== 'function') {
	      return template.join(String(replaceValue));
	    }
	    result = template[0];
	    for (index = 1; index < template.length; index++) {
	      result += String(replaceValue(searchString, index - 1, string));
	      result += template[index];
	    }
	    return result;
	  }
	});

	REPLACE_ALL in RegExpPrototype$3 || hide(RegExpPrototype$3, REPLACE_ALL, $replaceAll);

	// `Symbol.dispose` well-known symbol
	// https://github.com/tc39/proposal-using-statement
	defineWellKnownSymbol('dispose');

	// `Symbol.observable` well-known symbol
	// https://github.com/tc39/proposal-observable
	defineWellKnownSymbol('observable');

	// `Symbol.patternMatch` well-known symbol
	// https://github.com/tc39/proposal-pattern-matching
	defineWellKnownSymbol('patternMatch');

	// `WeakMap.prototype.deleteAll` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'WeakMap', proto: true, real: true, forced: isPure }, {
	  deleteAll: function deleteAll(/* ...elements */) {
	    return collectionDeleteAll.apply(this, arguments);
	  }
	});

	// `WeakMap.from` method
	// https://tc39.github.io/proposal-setmap-offrom/#sec-weakmap.from
	_export({ target: 'WeakMap', stat: true }, {
	  from: collectionFrom
	});

	// `WeakMap.of` method
	// https://tc39.github.io/proposal-setmap-offrom/#sec-weakmap.of
	_export({ target: 'WeakMap', stat: true }, {
	  of: collectionOf
	});

	// `WeakSet.prototype.addAll` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'WeakSet', proto: true, real: true, forced: isPure }, {
	  addAll: function addAll(/* ...elements */) {
	    return collectionAddAll.apply(this, arguments);
	  }
	});

	// `WeakSet.prototype.deleteAll` method
	// https://github.com/tc39/proposal-collection-methods
	_export({ target: 'WeakSet', proto: true, real: true, forced: isPure }, {
	  deleteAll: function deleteAll(/* ...elements */) {
	    return collectionDeleteAll.apply(this, arguments);
	  }
	});

	// `WeakSet.from` method
	// https://tc39.github.io/proposal-setmap-offrom/#sec-weakset.from
	_export({ target: 'WeakSet', stat: true }, {
	  from: collectionFrom
	});

	// `WeakSet.of` method
	// https://tc39.github.io/proposal-setmap-offrom/#sec-weakset.of
	_export({ target: 'WeakSet', stat: true }, {
	  of: collectionOf
	});

	// iterable DOM collections
	// flag - `iterable` interface - 'entries', 'keys', 'values', 'forEach' methods
	var domIterables = {
	  CSSRuleList: 0,
	  CSSStyleDeclaration: 0,
	  CSSValueList: 0,
	  ClientRectList: 0,
	  DOMRectList: 0,
	  DOMStringList: 0,
	  DOMTokenList: 1,
	  DataTransferItemList: 0,
	  FileList: 0,
	  HTMLAllCollection: 0,
	  HTMLCollection: 0,
	  HTMLFormElement: 0,
	  HTMLSelectElement: 0,
	  MediaList: 0,
	  MimeTypeArray: 0,
	  NamedNodeMap: 0,
	  NodeList: 1,
	  PaintRequestList: 0,
	  Plugin: 0,
	  PluginArray: 0,
	  SVGLengthList: 0,
	  SVGNumberList: 0,
	  SVGPathSegList: 0,
	  SVGPointList: 0,
	  SVGStringList: 0,
	  SVGTransformList: 0,
	  SourceBufferList: 0,
	  StyleSheetList: 0,
	  TextTrackCueList: 0,
	  TextTrackList: 0,
	  TouchList: 0
	};

	for (var COLLECTION_NAME in domIterables) {
	  var Collection = global_1[COLLECTION_NAME];
	  var CollectionPrototype = Collection && Collection.prototype;
	  // some Chrome versions have non-configurable methods on DOMTokenList
	  if (CollectionPrototype && CollectionPrototype.forEach !== arrayForEach) try {
	    hide(CollectionPrototype, 'forEach', arrayForEach);
	  } catch (error) {
	    CollectionPrototype.forEach = arrayForEach;
	  }
	}

	var ITERATOR$6 = wellKnownSymbol('iterator');
	var TO_STRING_TAG$4 = wellKnownSymbol('toStringTag');
	var ArrayValues = es_array_iterator.values;

	for (var COLLECTION_NAME$1 in domIterables) {
	  var Collection$1 = global_1[COLLECTION_NAME$1];
	  var CollectionPrototype$1 = Collection$1 && Collection$1.prototype;
	  if (CollectionPrototype$1) {
	    // some Chrome versions have non-configurable methods on DOMTokenList
	    if (CollectionPrototype$1[ITERATOR$6] !== ArrayValues) try {
	      hide(CollectionPrototype$1, ITERATOR$6, ArrayValues);
	    } catch (error) {
	      CollectionPrototype$1[ITERATOR$6] = ArrayValues;
	    }
	    if (!CollectionPrototype$1[TO_STRING_TAG$4]) hide(CollectionPrototype$1, TO_STRING_TAG$4, COLLECTION_NAME$1);
	    if (domIterables[COLLECTION_NAME$1]) for (var METHOD_NAME in es_array_iterator) {
	      // some Chrome versions have non-configurable methods on DOMTokenList
	      if (CollectionPrototype$1[METHOD_NAME] !== es_array_iterator[METHOD_NAME]) try {
	        hide(CollectionPrototype$1, METHOD_NAME, es_array_iterator[METHOD_NAME]);
	      } catch (error) {
	        CollectionPrototype$1[METHOD_NAME] = es_array_iterator[METHOD_NAME];
	      }
	    }
	  }
	}

	var FORCED$j = !global_1.setImmediate || !global_1.clearImmediate;

	// http://w3c.github.io/setImmediate/
	_export({ global: true, bind: true, enumerable: true, forced: FORCED$j }, {
	  // `setImmediate` method
	  // http://w3c.github.io/setImmediate/#si-setImmediate
	  setImmediate: task.set,
	  // `clearImmediate` method
	  // http://w3c.github.io/setImmediate/#si-clearImmediate
	  clearImmediate: task.clear
	});

	var process$3 = global_1.process;
	var isNode = classofRaw(process$3) == 'process';

	// `queueMicrotask` method
	// https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#dom-queuemicrotask
	_export({ global: true, enumerable: true, noTargetGet: true }, {
	  queueMicrotask: function queueMicrotask(fn) {
	    var domain = isNode && process$3.domain;
	    microtask(domain ? domain.bind(fn) : fn);
	  }
	});

	var ITERATOR$7 = wellKnownSymbol('iterator');

	var nativeUrl = !fails(function () {
	  var url = new URL('b?e=1', 'http://a');
	  var searchParams = url.searchParams;
	  url.pathname = 'c%20d';
	  return !searchParams.sort
	    || url.href !== 'http://a/c%20d?e=1'
	    || searchParams.get('e') !== '1'
	    || String(new URLSearchParams('?a=1')) !== 'a=1'
	    || !searchParams[ITERATOR$7]
	    // throws in Edge
	    || new URL('https://a@b').username !== 'a'
	    || new URLSearchParams(new URLSearchParams('a=b')).get('a') !== 'b'
	    // not punycoded in Edge
	    || new URL('http://тест').host !== 'xn--e1aybc'
	    // not escaped in Chrome 62-
	    || new URL('http://a#б').hash !== '#%D0%B1';
	});

	// based on https://github.com/bestiejs/punycode.js/blob/master/punycode.js
	var maxInt = 2147483647; // aka. 0x7FFFFFFF or 2^31-1
	var base = 36;
	var tMin = 1;
	var tMax = 26;
	var skew = 38;
	var damp = 700;
	var initialBias = 72;
	var initialN = 128; // 0x80
	var delimiter = '-'; // '\x2D'
	var regexNonASCII = /[^\0-\u007E]/; // non-ASCII chars
	var regexSeparators = /[.\u3002\uFF0E\uFF61]/g; // RFC 3490 separators
	var OVERFLOW_ERROR = 'Overflow: input needs wider integers to process';
	var baseMinusTMin = base - tMin;
	var floor$7 = Math.floor;
	var stringFromCharCode = String.fromCharCode;

	/**
	 * Creates an array containing the numeric code points of each Unicode
	 * character in the string. While JavaScript uses UCS-2 internally,
	 * this function will convert a pair of surrogate halves (each of which
	 * UCS-2 exposes as separate characters) into a single code point,
	 * matching UTF-16.
	 */
	var ucs2decode = function (string) {
	  var output = [];
	  var counter = 0;
	  var length = string.length;
	  while (counter < length) {
	    var value = string.charCodeAt(counter++);
	    if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
	      // It's a high surrogate, and there is a next character.
	      var extra = string.charCodeAt(counter++);
	      if ((extra & 0xFC00) == 0xDC00) { // Low surrogate.
	        output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
	      } else {
	        // It's an unmatched surrogate; only append this code unit, in case the
	        // next code unit is the high surrogate of a surrogate pair.
	        output.push(value);
	        counter--;
	      }
	    } else {
	      output.push(value);
	    }
	  }
	  return output;
	};

	/**
	 * Converts a digit/integer into a basic code point.
	 */
	var digitToBasic = function (digit) {
	  //  0..25 map to ASCII a..z or A..Z
	  // 26..35 map to ASCII 0..9
	  return digit + 22 + 75 * (digit < 26);
	};

	/**
	 * Bias adaptation function as per section 3.4 of RFC 3492.
	 * https://tools.ietf.org/html/rfc3492#section-3.4
	 */
	var adapt = function (delta, numPoints, firstTime) {
	  var k = 0;
	  delta = firstTime ? floor$7(delta / damp) : delta >> 1;
	  delta += floor$7(delta / numPoints);
	  for (; delta > baseMinusTMin * tMax >> 1; k += base) {
	    delta = floor$7(delta / baseMinusTMin);
	  }
	  return floor$7(k + (baseMinusTMin + 1) * delta / (delta + skew));
	};

	/**
	 * Converts a string of Unicode symbols (e.g. a domain name label) to a
	 * Punycode string of ASCII-only symbols.
	 */
	// eslint-disable-next-line  max-statements
	var encode = function (input) {
	  var output = [];

	  // Convert the input in UCS-2 to an array of Unicode code points.
	  input = ucs2decode(input);

	  // Cache the length.
	  var inputLength = input.length;

	  // Initialize the state.
	  var n = initialN;
	  var delta = 0;
	  var bias = initialBias;
	  var i, currentValue;

	  // Handle the basic code points.
	  for (i = 0; i < input.length; i++) {
	    currentValue = input[i];
	    if (currentValue < 0x80) {
	      output.push(stringFromCharCode(currentValue));
	    }
	  }

	  var basicLength = output.length; // number of basic code points.
	  var handledCPCount = basicLength; // number of code points that have been handled;

	  // Finish the basic string with a delimiter unless it's empty.
	  if (basicLength) {
	    output.push(delimiter);
	  }

	  // Main encoding loop:
	  while (handledCPCount < inputLength) {
	    // All non-basic code points < n have been handled already. Find the next larger one:
	    var m = maxInt;
	    for (i = 0; i < input.length; i++) {
	      currentValue = input[i];
	      if (currentValue >= n && currentValue < m) {
	        m = currentValue;
	      }
	    }

	    // Increase `delta` enough to advance the decoder's <n,i> state to <m,0>, but guard against overflow.
	    var handledCPCountPlusOne = handledCPCount + 1;
	    if (m - n > floor$7((maxInt - delta) / handledCPCountPlusOne)) {
	      throw RangeError(OVERFLOW_ERROR);
	    }

	    delta += (m - n) * handledCPCountPlusOne;
	    n = m;

	    for (i = 0; i < input.length; i++) {
	      currentValue = input[i];
	      if (currentValue < n && ++delta > maxInt) {
	        throw RangeError(OVERFLOW_ERROR);
	      }
	      if (currentValue == n) {
	        // Represent delta as a generalized variable-length integer.
	        var q = delta;
	        for (var k = base; /* no condition */; k += base) {
	          var t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);
	          if (q < t) break;
	          var qMinusT = q - t;
	          var baseMinusT = base - t;
	          output.push(stringFromCharCode(digitToBasic(t + qMinusT % baseMinusT)));
	          q = floor$7(qMinusT / baseMinusT);
	        }

	        output.push(stringFromCharCode(digitToBasic(q)));
	        bias = adapt(delta, handledCPCountPlusOne, handledCPCount == basicLength);
	        delta = 0;
	        ++handledCPCount;
	      }
	    }

	    ++delta;
	    ++n;
	  }
	  return output.join('');
	};

	var punycodeToAscii = function (input) {
	  var encoded = [];
	  var labels = input.toLowerCase().replace(regexSeparators, '\u002E').split('.');
	  var i, label;
	  for (i = 0; i < labels.length; i++) {
	    label = labels[i];
	    encoded.push(regexNonASCII.test(label) ? 'xn--' + encode(label) : label);
	  }
	  return encoded.join('.');
	};

	// TODO: in core-js@4, move /modules/ dependencies to public entries for better optimization by tools like `preset-env`

















	var ITERATOR$8 = wellKnownSymbol('iterator');
	var URL_SEARCH_PARAMS = 'URLSearchParams';
	var URL_SEARCH_PARAMS_ITERATOR = URL_SEARCH_PARAMS + 'Iterator';
	var setInternalState$a = internalState.set;
	var getInternalParamsState = internalState.getterFor(URL_SEARCH_PARAMS);
	var getInternalIteratorState = internalState.getterFor(URL_SEARCH_PARAMS_ITERATOR);

	var plus = /\+/g;
	var sequences = Array(4);

	var percentSequence = function (bytes) {
	  return sequences[bytes - 1] || (sequences[bytes - 1] = RegExp('((?:%[\\da-f]{2}){' + bytes + '})', 'gi'));
	};

	var percentDecode = function (sequence) {
	  try {
	    return decodeURIComponent(sequence);
	  } catch (error) {
	    return sequence;
	  }
	};

	var deserialize = function (it) {
	  var result = it.replace(plus, ' ');
	  var bytes = 4;
	  try {
	    return decodeURIComponent(result);
	  } catch (error) {
	    while (bytes) {
	      result = result.replace(percentSequence(bytes--), percentDecode);
	    }
	    return result;
	  }
	};

	var find$1 = /[!'()~]|%20/g;

	var replace = {
	  '!': '%21',
	  "'": '%27',
	  '(': '%28',
	  ')': '%29',
	  '~': '%7E',
	  '%20': '+'
	};

	var replacer = function (match) {
	  return replace[match];
	};

	var serialize = function (it) {
	  return encodeURIComponent(it).replace(find$1, replacer);
	};

	var parseSearchParams = function (result, query) {
	  if (query) {
	    var attributes = query.split('&');
	    var index = 0;
	    var attribute, entry;
	    while (index < attributes.length) {
	      attribute = attributes[index++];
	      if (attribute.length) {
	        entry = attribute.split('=');
	        result.push({
	          key: deserialize(entry.shift()),
	          value: deserialize(entry.join('='))
	        });
	      }
	    }
	  }
	};

	var updateSearchParams = function (query) {
	  this.entries.length = 0;
	  parseSearchParams(this.entries, query);
	};

	var validateArgumentsLength = function (passed, required) {
	  if (passed < required) throw TypeError('Not enough arguments');
	};

	var URLSearchParamsIterator = createIteratorConstructor(function Iterator(params, kind) {
	  setInternalState$a(this, {
	    type: URL_SEARCH_PARAMS_ITERATOR,
	    iterator: getIterator(getInternalParamsState(params).entries),
	    kind: kind
	  });
	}, 'Iterator', function next() {
	  var state = getInternalIteratorState(this);
	  var kind = state.kind;
	  var step = state.iterator.next();
	  var entry = step.value;
	  if (!step.done) {
	    step.value = kind === 'keys' ? entry.key : kind === 'values' ? entry.value : [entry.key, entry.value];
	  } return step;
	});

	// `URLSearchParams` constructor
	// https://url.spec.whatwg.org/#interface-urlsearchparams
	var URLSearchParamsConstructor = function URLSearchParams(/* init */) {
	  anInstance(this, URLSearchParamsConstructor, URL_SEARCH_PARAMS);
	  var init = arguments.length > 0 ? arguments[0] : undefined;
	  var that = this;
	  var entries = [];
	  var iteratorMethod, iterator, step, entryIterator, first, second, key;

	  setInternalState$a(that, {
	    type: URL_SEARCH_PARAMS,
	    entries: entries,
	    updateURL: function () { /* empty */ },
	    updateSearchParams: updateSearchParams
	  });

	  if (init !== undefined) {
	    if (isObject(init)) {
	      iteratorMethod = getIteratorMethod(init);
	      if (typeof iteratorMethod === 'function') {
	        iterator = iteratorMethod.call(init);
	        while (!(step = iterator.next()).done) {
	          entryIterator = getIterator(anObject(step.value));
	          if (
	            (first = entryIterator.next()).done ||
	            (second = entryIterator.next()).done ||
	            !entryIterator.next().done
	          ) throw TypeError('Expected sequence with length 2');
	          entries.push({ key: first.value + '', value: second.value + '' });
	        }
	      } else for (key in init) if (has(init, key)) entries.push({ key: key, value: init[key] + '' });
	    } else {
	      parseSearchParams(entries, typeof init === 'string' ? init.charAt(0) === '?' ? init.slice(1) : init : init + '');
	    }
	  }
	};

	var URLSearchParamsPrototype = URLSearchParamsConstructor.prototype;

	redefineAll(URLSearchParamsPrototype, {
	  // `URLSearchParams.prototype.appent` method
	  // https://url.spec.whatwg.org/#dom-urlsearchparams-append
	  append: function append(name, value) {
	    validateArgumentsLength(arguments.length, 2);
	    var state = getInternalParamsState(this);
	    state.entries.push({ key: name + '', value: value + '' });
	    state.updateURL();
	  },
	  // `URLSearchParams.prototype.delete` method
	  // https://url.spec.whatwg.org/#dom-urlsearchparams-delete
	  'delete': function (name) {
	    validateArgumentsLength(arguments.length, 1);
	    var state = getInternalParamsState(this);
	    var entries = state.entries;
	    var key = name + '';
	    var index = 0;
	    while (index < entries.length) {
	      if (entries[index].key === key) entries.splice(index, 1);
	      else index++;
	    }
	    state.updateURL();
	  },
	  // `URLSearchParams.prototype.get` method
	  // https://url.spec.whatwg.org/#dom-urlsearchparams-get
	  get: function get(name) {
	    validateArgumentsLength(arguments.length, 1);
	    var entries = getInternalParamsState(this).entries;
	    var key = name + '';
	    var index = 0;
	    for (; index < entries.length; index++) {
	      if (entries[index].key === key) return entries[index].value;
	    }
	    return null;
	  },
	  // `URLSearchParams.prototype.getAll` method
	  // https://url.spec.whatwg.org/#dom-urlsearchparams-getall
	  getAll: function getAll(name) {
	    validateArgumentsLength(arguments.length, 1);
	    var entries = getInternalParamsState(this).entries;
	    var key = name + '';
	    var result = [];
	    var index = 0;
	    for (; index < entries.length; index++) {
	      if (entries[index].key === key) result.push(entries[index].value);
	    }
	    return result;
	  },
	  // `URLSearchParams.prototype.has` method
	  // https://url.spec.whatwg.org/#dom-urlsearchparams-has
	  has: function has(name) {
	    validateArgumentsLength(arguments.length, 1);
	    var entries = getInternalParamsState(this).entries;
	    var key = name + '';
	    var index = 0;
	    while (index < entries.length) {
	      if (entries[index++].key === key) return true;
	    }
	    return false;
	  },
	  // `URLSearchParams.prototype.set` method
	  // https://url.spec.whatwg.org/#dom-urlsearchparams-set
	  set: function set(name, value) {
	    validateArgumentsLength(arguments.length, 1);
	    var state = getInternalParamsState(this);
	    var entries = state.entries;
	    var found = false;
	    var key = name + '';
	    var val = value + '';
	    var index = 0;
	    var entry;
	    for (; index < entries.length; index++) {
	      entry = entries[index];
	      if (entry.key === key) {
	        if (found) entries.splice(index--, 1);
	        else {
	          found = true;
	          entry.value = val;
	        }
	      }
	    }
	    if (!found) entries.push({ key: key, value: val });
	    state.updateURL();
	  },
	  // `URLSearchParams.prototype.sort` method
	  // https://url.spec.whatwg.org/#dom-urlsearchparams-sort
	  sort: function sort() {
	    var state = getInternalParamsState(this);
	    var entries = state.entries;
	    // Array#sort is not stable in some engines
	    var slice = entries.slice();
	    var entry, entriesIndex, sliceIndex;
	    entries.length = 0;
	    for (sliceIndex = 0; sliceIndex < slice.length; sliceIndex++) {
	      entry = slice[sliceIndex];
	      for (entriesIndex = 0; entriesIndex < sliceIndex; entriesIndex++) {
	        if (entries[entriesIndex].key > entry.key) {
	          entries.splice(entriesIndex, 0, entry);
	          break;
	        }
	      }
	      if (entriesIndex === sliceIndex) entries.push(entry);
	    }
	    state.updateURL();
	  },
	  // `URLSearchParams.prototype.forEach` method
	  forEach: function forEach(callback /* , thisArg */) {
	    var entries = getInternalParamsState(this).entries;
	    var boundFunction = bindContext(callback, arguments.length > 1 ? arguments[1] : undefined, 3);
	    var index = 0;
	    var entry;
	    while (index < entries.length) {
	      entry = entries[index++];
	      boundFunction(entry.value, entry.key, this);
	    }
	  },
	  // `URLSearchParams.prototype.keys` method
	  keys: function keys() {
	    return new URLSearchParamsIterator(this, 'keys');
	  },
	  // `URLSearchParams.prototype.values` method
	  values: function values() {
	    return new URLSearchParamsIterator(this, 'values');
	  },
	  // `URLSearchParams.prototype.entries` method
	  entries: function entries() {
	    return new URLSearchParamsIterator(this, 'entries');
	  }
	}, { enumerable: true });

	// `URLSearchParams.prototype[@@iterator]` method
	redefine(URLSearchParamsPrototype, ITERATOR$8, URLSearchParamsPrototype.entries);

	// `URLSearchParams.prototype.toString` method
	// https://url.spec.whatwg.org/#urlsearchparams-stringification-behavior
	redefine(URLSearchParamsPrototype, 'toString', function toString() {
	  var entries = getInternalParamsState(this).entries;
	  var result = [];
	  var index = 0;
	  var entry;
	  while (index < entries.length) {
	    entry = entries[index++];
	    result.push(serialize(entry.key) + '=' + serialize(entry.value));
	  } return result.join('&');
	}, { enumerable: true });

	setToStringTag(URLSearchParamsConstructor, URL_SEARCH_PARAMS);

	_export({ global: true, forced: !nativeUrl }, {
	  URLSearchParams: URLSearchParamsConstructor
	});

	var web_urlSearchParams = {
	  URLSearchParams: URLSearchParamsConstructor,
	  getState: getInternalParamsState
	};

	// TODO: in core-js@4, move /modules/ dependencies to public entries for better optimization by tools like `preset-env`











	var codeAt$2 = stringMultibyte.codeAt;





	var NativeURL = global_1.URL;
	var URLSearchParams$1 = web_urlSearchParams.URLSearchParams;
	var getInternalSearchParamsState = web_urlSearchParams.getState;
	var setInternalState$b = internalState.set;
	var getInternalURLState = internalState.getterFor('URL');
	var floor$8 = Math.floor;
	var pow$3 = Math.pow;

	var INVALID_AUTHORITY = 'Invalid authority';
	var INVALID_SCHEME = 'Invalid scheme';
	var INVALID_HOST = 'Invalid host';
	var INVALID_PORT = 'Invalid port';

	var ALPHA = /[A-Za-z]/;
	var ALPHANUMERIC = /[\d+\-.A-Za-z]/;
	var DIGIT = /\d/;
	var HEX_START = /^(0x|0X)/;
	var OCT = /^[0-7]+$/;
	var DEC = /^\d+$/;
	var HEX = /^[\dA-Fa-f]+$/;
	// eslint-disable-next-line no-control-regex
	var FORBIDDEN_HOST_CODE_POINT = /[\u0000\u0009\u000A\u000D #%/:?@[\\]]/;
	// eslint-disable-next-line no-control-regex
	var FORBIDDEN_HOST_CODE_POINT_EXCLUDING_PERCENT = /[\u0000\u0009\u000A\u000D #/:?@[\\]]/;
	// eslint-disable-next-line no-control-regex
	var LEADING_AND_TRAILING_C0_CONTROL_OR_SPACE = /^[\u0000-\u001F ]+|[\u0000-\u001F ]+$/g;
	// eslint-disable-next-line no-control-regex
	var TAB_AND_NEW_LINE = /[\u0009\u000A\u000D]/g;
	var EOF;

	var parseHost = function (url, input) {
	  var result, codePoints, index;
	  if (input.charAt(0) == '[') {
	    if (input.charAt(input.length - 1) != ']') return INVALID_HOST;
	    result = parseIPv6(input.slice(1, -1));
	    if (!result) return INVALID_HOST;
	    url.host = result;
	  // opaque host
	  } else if (!isSpecial(url)) {
	    if (FORBIDDEN_HOST_CODE_POINT_EXCLUDING_PERCENT.test(input)) return INVALID_HOST;
	    result = '';
	    codePoints = arrayFrom(input);
	    for (index = 0; index < codePoints.length; index++) {
	      result += percentEncode(codePoints[index], C0ControlPercentEncodeSet);
	    }
	    url.host = result;
	  } else {
	    input = punycodeToAscii(input);
	    if (FORBIDDEN_HOST_CODE_POINT.test(input)) return INVALID_HOST;
	    result = parseIPv4(input);
	    if (result === null) return INVALID_HOST;
	    url.host = result;
	  }
	};

	var parseIPv4 = function (input) {
	  var parts = input.split('.');
	  var partsLength, numbers, index, part, radix, number, ipv4;
	  if (parts.length && parts[parts.length - 1] == '') {
	    parts.pop();
	  }
	  partsLength = parts.length;
	  if (partsLength > 4) return input;
	  numbers = [];
	  for (index = 0; index < partsLength; index++) {
	    part = parts[index];
	    if (part == '') return input;
	    radix = 10;
	    if (part.length > 1 && part.charAt(0) == '0') {
	      radix = HEX_START.test(part) ? 16 : 8;
	      part = part.slice(radix == 8 ? 1 : 2);
	    }
	    if (part === '') {
	      number = 0;
	    } else {
	      if (!(radix == 10 ? DEC : radix == 8 ? OCT : HEX).test(part)) return input;
	      number = parseInt(part, radix);
	    }
	    numbers.push(number);
	  }
	  for (index = 0; index < partsLength; index++) {
	    number = numbers[index];
	    if (index == partsLength - 1) {
	      if (number >= pow$3(256, 5 - partsLength)) return null;
	    } else if (number > 255) return null;
	  }
	  ipv4 = numbers.pop();
	  for (index = 0; index < numbers.length; index++) {
	    ipv4 += numbers[index] * pow$3(256, 3 - index);
	  }
	  return ipv4;
	};

	// eslint-disable-next-line max-statements
	var parseIPv6 = function (input) {
	  var address = [0, 0, 0, 0, 0, 0, 0, 0];
	  var pieceIndex = 0;
	  var compress = null;
	  var pointer = 0;
	  var value, length, numbersSeen, ipv4Piece, number, swaps, swap;

	  var char = function () {
	    return input.charAt(pointer);
	  };

	  if (char() == ':') {
	    if (input.charAt(1) != ':') return;
	    pointer += 2;
	    pieceIndex++;
	    compress = pieceIndex;
	  }
	  while (char()) {
	    if (pieceIndex == 8) return;
	    if (char() == ':') {
	      if (compress !== null) return;
	      pointer++;
	      pieceIndex++;
	      compress = pieceIndex;
	      continue;
	    }
	    value = length = 0;
	    while (length < 4 && HEX.test(char())) {
	      value = value * 16 + parseInt(char(), 16);
	      pointer++;
	      length++;
	    }
	    if (char() == '.') {
	      if (length == 0) return;
	      pointer -= length;
	      if (pieceIndex > 6) return;
	      numbersSeen = 0;
	      while (char()) {
	        ipv4Piece = null;
	        if (numbersSeen > 0) {
	          if (char() == '.' && numbersSeen < 4) pointer++;
	          else return;
	        }
	        if (!DIGIT.test(char())) return;
	        while (DIGIT.test(char())) {
	          number = parseInt(char(), 10);
	          if (ipv4Piece === null) ipv4Piece = number;
	          else if (ipv4Piece == 0) return;
	          else ipv4Piece = ipv4Piece * 10 + number;
	          if (ipv4Piece > 255) return;
	          pointer++;
	        }
	        address[pieceIndex] = address[pieceIndex] * 256 + ipv4Piece;
	        numbersSeen++;
	        if (numbersSeen == 2 || numbersSeen == 4) pieceIndex++;
	      }
	      if (numbersSeen != 4) return;
	      break;
	    } else if (char() == ':') {
	      pointer++;
	      if (!char()) return;
	    } else if (char()) return;
	    address[pieceIndex++] = value;
	  }
	  if (compress !== null) {
	    swaps = pieceIndex - compress;
	    pieceIndex = 7;
	    while (pieceIndex != 0 && swaps > 0) {
	      swap = address[pieceIndex];
	      address[pieceIndex--] = address[compress + swaps - 1];
	      address[compress + --swaps] = swap;
	    }
	  } else if (pieceIndex != 8) return;
	  return address;
	};

	var findLongestZeroSequence = function (ipv6) {
	  var maxIndex = null;
	  var maxLength = 1;
	  var currStart = null;
	  var currLength = 0;
	  var index = 0;
	  for (; index < 8; index++) {
	    if (ipv6[index] !== 0) {
	      if (currLength > maxLength) {
	        maxIndex = currStart;
	        maxLength = currLength;
	      }
	      currStart = null;
	      currLength = 0;
	    } else {
	      if (currStart === null) currStart = index;
	      ++currLength;
	    }
	  }
	  if (currLength > maxLength) {
	    maxIndex = currStart;
	    maxLength = currLength;
	  }
	  return maxIndex;
	};

	var serializeHost = function (host) {
	  var result, index, compress, ignore0;
	  // ipv4
	  if (typeof host == 'number') {
	    result = [];
	    for (index = 0; index < 4; index++) {
	      result.unshift(host % 256);
	      host = floor$8(host / 256);
	    } return result.join('.');
	  // ipv6
	  } else if (typeof host == 'object') {
	    result = '';
	    compress = findLongestZeroSequence(host);
	    for (index = 0; index < 8; index++) {
	      if (ignore0 && host[index] === 0) continue;
	      if (ignore0) ignore0 = false;
	      if (compress === index) {
	        result += index ? ':' : '::';
	        ignore0 = true;
	      } else {
	        result += host[index].toString(16);
	        if (index < 7) result += ':';
	      }
	    }
	    return '[' + result + ']';
	  } return host;
	};

	var C0ControlPercentEncodeSet = {};
	var fragmentPercentEncodeSet = objectAssign({}, C0ControlPercentEncodeSet, {
	  ' ': 1, '"': 1, '<': 1, '>': 1, '`': 1
	});
	var pathPercentEncodeSet = objectAssign({}, fragmentPercentEncodeSet, {
	  '#': 1, '?': 1, '{': 1, '}': 1
	});
	var userinfoPercentEncodeSet = objectAssign({}, pathPercentEncodeSet, {
	  '/': 1, ':': 1, ';': 1, '=': 1, '@': 1, '[': 1, '\\': 1, ']': 1, '^': 1, '|': 1
	});

	var percentEncode = function (char, set) {
	  var code = codeAt$2(char, 0);
	  return code > 0x20 && code < 0x7F && !has(set, char) ? char : encodeURIComponent(char);
	};

	var specialSchemes = {
	  ftp: 21,
	  file: null,
	  gopher: 70,
	  http: 80,
	  https: 443,
	  ws: 80,
	  wss: 443
	};

	var isSpecial = function (url) {
	  return has(specialSchemes, url.scheme);
	};

	var includesCredentials = function (url) {
	  return url.username != '' || url.password != '';
	};

	var cannotHaveUsernamePasswordPort = function (url) {
	  return !url.host || url.cannotBeABaseURL || url.scheme == 'file';
	};

	var isWindowsDriveLetter = function (string, normalized) {
	  var second;
	  return string.length == 2 && ALPHA.test(string.charAt(0))
	    && ((second = string.charAt(1)) == ':' || (!normalized && second == '|'));
	};

	var startsWithWindowsDriveLetter = function (string) {
	  var third;
	  return string.length > 1 && isWindowsDriveLetter(string.slice(0, 2)) && (
	    string.length == 2 ||
	    ((third = string.charAt(2)) === '/' || third === '\\' || third === '?' || third === '#')
	  );
	};

	var shortenURLsPath = function (url) {
	  var path = url.path;
	  var pathSize = path.length;
	  if (pathSize && (url.scheme != 'file' || pathSize != 1 || !isWindowsDriveLetter(path[0], true))) {
	    path.pop();
	  }
	};

	var isSingleDot = function (segment) {
	  return segment === '.' || segment.toLowerCase() === '%2e';
	};

	var isDoubleDot = function (segment) {
	  segment = segment.toLowerCase();
	  return segment === '..' || segment === '%2e.' || segment === '.%2e' || segment === '%2e%2e';
	};

	// States:
	var SCHEME_START = {};
	var SCHEME = {};
	var NO_SCHEME = {};
	var SPECIAL_RELATIVE_OR_AUTHORITY = {};
	var PATH_OR_AUTHORITY = {};
	var RELATIVE = {};
	var RELATIVE_SLASH = {};
	var SPECIAL_AUTHORITY_SLASHES = {};
	var SPECIAL_AUTHORITY_IGNORE_SLASHES = {};
	var AUTHORITY = {};
	var HOST = {};
	var HOSTNAME = {};
	var PORT = {};
	var FILE = {};
	var FILE_SLASH = {};
	var FILE_HOST = {};
	var PATH_START = {};
	var PATH = {};
	var CANNOT_BE_A_BASE_URL_PATH = {};
	var QUERY = {};
	var FRAGMENT = {};

	// eslint-disable-next-line max-statements
	var parseURL = function (url, input, stateOverride, base) {
	  var state = stateOverride || SCHEME_START;
	  var pointer = 0;
	  var buffer = '';
	  var seenAt = false;
	  var seenBracket = false;
	  var seenPasswordToken = false;
	  var codePoints, char, bufferCodePoints, failure;

	  if (!stateOverride) {
	    url.scheme = '';
	    url.username = '';
	    url.password = '';
	    url.host = null;
	    url.port = null;
	    url.path = [];
	    url.query = null;
	    url.fragment = null;
	    url.cannotBeABaseURL = false;
	    input = input.replace(LEADING_AND_TRAILING_C0_CONTROL_OR_SPACE, '');
	  }

	  input = input.replace(TAB_AND_NEW_LINE, '');

	  codePoints = arrayFrom(input);

	  while (pointer <= codePoints.length) {
	    char = codePoints[pointer];
	    switch (state) {
	      case SCHEME_START:
	        if (char && ALPHA.test(char)) {
	          buffer += char.toLowerCase();
	          state = SCHEME;
	        } else if (!stateOverride) {
	          state = NO_SCHEME;
	          continue;
	        } else return INVALID_SCHEME;
	        break;

	      case SCHEME:
	        if (char && (ALPHANUMERIC.test(char) || char == '+' || char == '-' || char == '.')) {
	          buffer += char.toLowerCase();
	        } else if (char == ':') {
	          if (stateOverride && (
	            (isSpecial(url) != has(specialSchemes, buffer)) ||
	            (buffer == 'file' && (includesCredentials(url) || url.port !== null)) ||
	            (url.scheme == 'file' && !url.host)
	          )) return;
	          url.scheme = buffer;
	          if (stateOverride) {
	            if (isSpecial(url) && specialSchemes[url.scheme] == url.port) url.port = null;
	            return;
	          }
	          buffer = '';
	          if (url.scheme == 'file') {
	            state = FILE;
	          } else if (isSpecial(url) && base && base.scheme == url.scheme) {
	            state = SPECIAL_RELATIVE_OR_AUTHORITY;
	          } else if (isSpecial(url)) {
	            state = SPECIAL_AUTHORITY_SLASHES;
	          } else if (codePoints[pointer + 1] == '/') {
	            state = PATH_OR_AUTHORITY;
	            pointer++;
	          } else {
	            url.cannotBeABaseURL = true;
	            url.path.push('');
	            state = CANNOT_BE_A_BASE_URL_PATH;
	          }
	        } else if (!stateOverride) {
	          buffer = '';
	          state = NO_SCHEME;
	          pointer = 0;
	          continue;
	        } else return INVALID_SCHEME;
	        break;

	      case NO_SCHEME:
	        if (!base || (base.cannotBeABaseURL && char != '#')) return INVALID_SCHEME;
	        if (base.cannotBeABaseURL && char == '#') {
	          url.scheme = base.scheme;
	          url.path = base.path.slice();
	          url.query = base.query;
	          url.fragment = '';
	          url.cannotBeABaseURL = true;
	          state = FRAGMENT;
	          break;
	        }
	        state = base.scheme == 'file' ? FILE : RELATIVE;
	        continue;

	      case SPECIAL_RELATIVE_OR_AUTHORITY:
	        if (char == '/' && codePoints[pointer + 1] == '/') {
	          state = SPECIAL_AUTHORITY_IGNORE_SLASHES;
	          pointer++;
	        } else {
	          state = RELATIVE;
	          continue;
	        } break;

	      case PATH_OR_AUTHORITY:
	        if (char == '/') {
	          state = AUTHORITY;
	          break;
	        } else {
	          state = PATH;
	          continue;
	        }

	      case RELATIVE:
	        url.scheme = base.scheme;
	        if (char == EOF) {
	          url.username = base.username;
	          url.password = base.password;
	          url.host = base.host;
	          url.port = base.port;
	          url.path = base.path.slice();
	          url.query = base.query;
	        } else if (char == '/' || (char == '\\' && isSpecial(url))) {
	          state = RELATIVE_SLASH;
	        } else if (char == '?') {
	          url.username = base.username;
	          url.password = base.password;
	          url.host = base.host;
	          url.port = base.port;
	          url.path = base.path.slice();
	          url.query = '';
	          state = QUERY;
	        } else if (char == '#') {
	          url.username = base.username;
	          url.password = base.password;
	          url.host = base.host;
	          url.port = base.port;
	          url.path = base.path.slice();
	          url.query = base.query;
	          url.fragment = '';
	          state = FRAGMENT;
	        } else {
	          url.username = base.username;
	          url.password = base.password;
	          url.host = base.host;
	          url.port = base.port;
	          url.path = base.path.slice();
	          url.path.pop();
	          state = PATH;
	          continue;
	        } break;

	      case RELATIVE_SLASH:
	        if (isSpecial(url) && (char == '/' || char == '\\')) {
	          state = SPECIAL_AUTHORITY_IGNORE_SLASHES;
	        } else if (char == '/') {
	          state = AUTHORITY;
	        } else {
	          url.username = base.username;
	          url.password = base.password;
	          url.host = base.host;
	          url.port = base.port;
	          state = PATH;
	          continue;
	        } break;

	      case SPECIAL_AUTHORITY_SLASHES:
	        state = SPECIAL_AUTHORITY_IGNORE_SLASHES;
	        if (char != '/' || buffer.charAt(pointer + 1) != '/') continue;
	        pointer++;
	        break;

	      case SPECIAL_AUTHORITY_IGNORE_SLASHES:
	        if (char != '/' && char != '\\') {
	          state = AUTHORITY;
	          continue;
	        } break;

	      case AUTHORITY:
	        if (char == '@') {
	          if (seenAt) buffer = '%40' + buffer;
	          seenAt = true;
	          bufferCodePoints = arrayFrom(buffer);
	          for (var i = 0; i < bufferCodePoints.length; i++) {
	            var codePoint = bufferCodePoints[i];
	            if (codePoint == ':' && !seenPasswordToken) {
	              seenPasswordToken = true;
	              continue;
	            }
	            var encodedCodePoints = percentEncode(codePoint, userinfoPercentEncodeSet);
	            if (seenPasswordToken) url.password += encodedCodePoints;
	            else url.username += encodedCodePoints;
	          }
	          buffer = '';
	        } else if (
	          char == EOF || char == '/' || char == '?' || char == '#' ||
	          (char == '\\' && isSpecial(url))
	        ) {
	          if (seenAt && buffer == '') return INVALID_AUTHORITY;
	          pointer -= arrayFrom(buffer).length + 1;
	          buffer = '';
	          state = HOST;
	        } else buffer += char;
	        break;

	      case HOST:
	      case HOSTNAME:
	        if (stateOverride && url.scheme == 'file') {
	          state = FILE_HOST;
	          continue;
	        } else if (char == ':' && !seenBracket) {
	          if (buffer == '') return INVALID_HOST;
	          failure = parseHost(url, buffer);
	          if (failure) return failure;
	          buffer = '';
	          state = PORT;
	          if (stateOverride == HOSTNAME) return;
	        } else if (
	          char == EOF || char == '/' || char == '?' || char == '#' ||
	          (char == '\\' && isSpecial(url))
	        ) {
	          if (isSpecial(url) && buffer == '') return INVALID_HOST;
	          if (stateOverride && buffer == '' && (includesCredentials(url) || url.port !== null)) return;
	          failure = parseHost(url, buffer);
	          if (failure) return failure;
	          buffer = '';
	          state = PATH_START;
	          if (stateOverride) return;
	          continue;
	        } else {
	          if (char == '[') seenBracket = true;
	          else if (char == ']') seenBracket = false;
	          buffer += char;
	        } break;

	      case PORT:
	        if (DIGIT.test(char)) {
	          buffer += char;
	        } else if (
	          char == EOF || char == '/' || char == '?' || char == '#' ||
	          (char == '\\' && isSpecial(url)) ||
	          stateOverride
	        ) {
	          if (buffer != '') {
	            var port = parseInt(buffer, 10);
	            if (port > 0xFFFF) return INVALID_PORT;
	            url.port = (isSpecial(url) && port === specialSchemes[url.scheme]) ? null : port;
	            buffer = '';
	          }
	          if (stateOverride) return;
	          state = PATH_START;
	          continue;
	        } else return INVALID_PORT;
	        break;

	      case FILE:
	        url.scheme = 'file';
	        if (char == '/' || char == '\\') state = FILE_SLASH;
	        else if (base && base.scheme == 'file') {
	          if (char == EOF) {
	            url.host = base.host;
	            url.path = base.path.slice();
	            url.query = base.query;
	          } else if (char == '?') {
	            url.host = base.host;
	            url.path = base.path.slice();
	            url.query = '';
	            state = QUERY;
	          } else if (char == '#') {
	            url.host = base.host;
	            url.path = base.path.slice();
	            url.query = base.query;
	            url.fragment = '';
	            state = FRAGMENT;
	          } else {
	            if (!startsWithWindowsDriveLetter(codePoints.slice(pointer).join(''))) {
	              url.host = base.host;
	              url.path = base.path.slice();
	              shortenURLsPath(url);
	            }
	            state = PATH;
	            continue;
	          }
	        } else {
	          state = PATH;
	          continue;
	        } break;

	      case FILE_SLASH:
	        if (char == '/' || char == '\\') {
	          state = FILE_HOST;
	          break;
	        }
	        if (base && base.scheme == 'file' && !startsWithWindowsDriveLetter(codePoints.slice(pointer).join(''))) {
	          if (isWindowsDriveLetter(base.path[0], true)) url.path.push(base.path[0]);
	          else url.host = base.host;
	        }
	        state = PATH;
	        continue;

	      case FILE_HOST:
	        if (char == EOF || char == '/' || char == '\\' || char == '?' || char == '#') {
	          if (!stateOverride && isWindowsDriveLetter(buffer)) {
	            state = PATH;
	          } else if (buffer == '') {
	            url.host = '';
	            if (stateOverride) return;
	            state = PATH_START;
	          } else {
	            failure = parseHost(url, buffer);
	            if (failure) return failure;
	            if (url.host == 'localhost') url.host = '';
	            if (stateOverride) return;
	            buffer = '';
	            state = PATH_START;
	          } continue;
	        } else buffer += char;
	        break;

	      case PATH_START:
	        if (isSpecial(url)) {
	          state = PATH;
	          if (char != '/' && char != '\\') continue;
	        } else if (!stateOverride && char == '?') {
	          url.query = '';
	          state = QUERY;
	        } else if (!stateOverride && char == '#') {
	          url.fragment = '';
	          state = FRAGMENT;
	        } else if (char != EOF) {
	          state = PATH;
	          if (char != '/') continue;
	        } break;

	      case PATH:
	        if (
	          char == EOF || char == '/' ||
	          (char == '\\' && isSpecial(url)) ||
	          (!stateOverride && (char == '?' || char == '#'))
	        ) {
	          if (isDoubleDot(buffer)) {
	            shortenURLsPath(url);
	            if (char != '/' && !(char == '\\' && isSpecial(url))) {
	              url.path.push('');
	            }
	          } else if (isSingleDot(buffer)) {
	            if (char != '/' && !(char == '\\' && isSpecial(url))) {
	              url.path.push('');
	            }
	          } else {
	            if (url.scheme == 'file' && !url.path.length && isWindowsDriveLetter(buffer)) {
	              if (url.host) url.host = '';
	              buffer = buffer.charAt(0) + ':'; // normalize windows drive letter
	            }
	            url.path.push(buffer);
	          }
	          buffer = '';
	          if (url.scheme == 'file' && (char == EOF || char == '?' || char == '#')) {
	            while (url.path.length > 1 && url.path[0] === '') {
	              url.path.shift();
	            }
	          }
	          if (char == '?') {
	            url.query = '';
	            state = QUERY;
	          } else if (char == '#') {
	            url.fragment = '';
	            state = FRAGMENT;
	          }
	        } else {
	          buffer += percentEncode(char, pathPercentEncodeSet);
	        } break;

	      case CANNOT_BE_A_BASE_URL_PATH:
	        if (char == '?') {
	          url.query = '';
	          state = QUERY;
	        } else if (char == '#') {
	          url.fragment = '';
	          state = FRAGMENT;
	        } else if (char != EOF) {
	          url.path[0] += percentEncode(char, C0ControlPercentEncodeSet);
	        } break;

	      case QUERY:
	        if (!stateOverride && char == '#') {
	          url.fragment = '';
	          state = FRAGMENT;
	        } else if (char != EOF) {
	          if (char == "'" && isSpecial(url)) url.query += '%27';
	          else if (char == '#') url.query += '%23';
	          else url.query += percentEncode(char, C0ControlPercentEncodeSet);
	        } break;

	      case FRAGMENT:
	        if (char != EOF) url.fragment += percentEncode(char, fragmentPercentEncodeSet);
	        break;
	    }

	    pointer++;
	  }
	};

	// `URL` constructor
	// https://url.spec.whatwg.org/#url-class
	var URLConstructor = function URL(url /* , base */) {
	  var that = anInstance(this, URLConstructor, 'URL');
	  var base = arguments.length > 1 ? arguments[1] : undefined;
	  var urlString = String(url);
	  var state = setInternalState$b(that, { type: 'URL' });
	  var baseState, failure;
	  if (base !== undefined) {
	    if (base instanceof URLConstructor) baseState = getInternalURLState(base);
	    else {
	      failure = parseURL(baseState = {}, String(base));
	      if (failure) throw TypeError(failure);
	    }
	  }
	  failure = parseURL(state, urlString, null, baseState);
	  if (failure) throw TypeError(failure);
	  var searchParams = state.searchParams = new URLSearchParams$1();
	  var searchParamsState = getInternalSearchParamsState(searchParams);
	  searchParamsState.updateSearchParams(state.query);
	  searchParamsState.updateURL = function () {
	    state.query = String(searchParams) || null;
	  };
	  if (!descriptors) {
	    that.href = serializeURL.call(that);
	    that.origin = getOrigin.call(that);
	    that.protocol = getProtocol.call(that);
	    that.username = getUsername.call(that);
	    that.password = getPassword.call(that);
	    that.host = getHost.call(that);
	    that.hostname = getHostname.call(that);
	    that.port = getPort.call(that);
	    that.pathname = getPathname.call(that);
	    that.search = getSearch.call(that);
	    that.searchParams = getSearchParams.call(that);
	    that.hash = getHash.call(that);
	  }
	};

	var URLPrototype = URLConstructor.prototype;

	var serializeURL = function () {
	  var url = getInternalURLState(this);
	  var scheme = url.scheme;
	  var username = url.username;
	  var password = url.password;
	  var host = url.host;
	  var port = url.port;
	  var path = url.path;
	  var query = url.query;
	  var fragment = url.fragment;
	  var output = scheme + ':';
	  if (host !== null) {
	    output += '//';
	    if (includesCredentials(url)) {
	      output += username + (password ? ':' + password : '') + '@';
	    }
	    output += serializeHost(host);
	    if (port !== null) output += ':' + port;
	  } else if (scheme == 'file') output += '//';
	  output += url.cannotBeABaseURL ? path[0] : path.length ? '/' + path.join('/') : '';
	  if (query !== null) output += '?' + query;
	  if (fragment !== null) output += '#' + fragment;
	  return output;
	};

	var getOrigin = function () {
	  var url = getInternalURLState(this);
	  var scheme = url.scheme;
	  var port = url.port;
	  if (scheme == 'blob') try {
	    return new URL(scheme.path[0]).origin;
	  } catch (error) {
	    return 'null';
	  }
	  if (scheme == 'file' || !isSpecial(url)) return 'null';
	  return scheme + '://' + serializeHost(url.host) + (port !== null ? ':' + port : '');
	};

	var getProtocol = function () {
	  return getInternalURLState(this).scheme + ':';
	};

	var getUsername = function () {
	  return getInternalURLState(this).username;
	};

	var getPassword = function () {
	  return getInternalURLState(this).password;
	};

	var getHost = function () {
	  var url = getInternalURLState(this);
	  var host = url.host;
	  var port = url.port;
	  return host === null ? ''
	    : port === null ? serializeHost(host)
	    : serializeHost(host) + ':' + port;
	};

	var getHostname = function () {
	  var host = getInternalURLState(this).host;
	  return host === null ? '' : serializeHost(host);
	};

	var getPort = function () {
	  var port = getInternalURLState(this).port;
	  return port === null ? '' : String(port);
	};

	var getPathname = function () {
	  var url = getInternalURLState(this);
	  var path = url.path;
	  return url.cannotBeABaseURL ? path[0] : path.length ? '/' + path.join('/') : '';
	};

	var getSearch = function () {
	  var query = getInternalURLState(this).query;
	  return query ? '?' + query : '';
	};

	var getSearchParams = function () {
	  return getInternalURLState(this).searchParams;
	};

	var getHash = function () {
	  var fragment = getInternalURLState(this).fragment;
	  return fragment ? '#' + fragment : '';
	};

	var accessorDescriptor = function (getter, setter) {
	  return { get: getter, set: setter, configurable: true, enumerable: true };
	};

	if (descriptors) {
	  objectDefineProperties(URLPrototype, {
	    // `URL.prototype.href` accessors pair
	    // https://url.spec.whatwg.org/#dom-url-href
	    href: accessorDescriptor(serializeURL, function (href) {
	      var url = getInternalURLState(this);
	      var urlString = String(href);
	      var failure = parseURL(url, urlString);
	      if (failure) throw TypeError(failure);
	      getInternalSearchParamsState(url.searchParams).updateSearchParams(url.query);
	    }),
	    // `URL.prototype.origin` getter
	    // https://url.spec.whatwg.org/#dom-url-origin
	    origin: accessorDescriptor(getOrigin),
	    // `URL.prototype.protocol` accessors pair
	    // https://url.spec.whatwg.org/#dom-url-protocol
	    protocol: accessorDescriptor(getProtocol, function (protocol) {
	      var url = getInternalURLState(this);
	      parseURL(url, String(protocol) + ':', SCHEME_START);
	    }),
	    // `URL.prototype.username` accessors pair
	    // https://url.spec.whatwg.org/#dom-url-username
	    username: accessorDescriptor(getUsername, function (username) {
	      var url = getInternalURLState(this);
	      var codePoints = arrayFrom(String(username));
	      if (cannotHaveUsernamePasswordPort(url)) return;
	      url.username = '';
	      for (var i = 0; i < codePoints.length; i++) {
	        url.username += percentEncode(codePoints[i], userinfoPercentEncodeSet);
	      }
	    }),
	    // `URL.prototype.password` accessors pair
	    // https://url.spec.whatwg.org/#dom-url-password
	    password: accessorDescriptor(getPassword, function (password) {
	      var url = getInternalURLState(this);
	      var codePoints = arrayFrom(String(password));
	      if (cannotHaveUsernamePasswordPort(url)) return;
	      url.password = '';
	      for (var i = 0; i < codePoints.length; i++) {
	        url.password += percentEncode(codePoints[i], userinfoPercentEncodeSet);
	      }
	    }),
	    // `URL.prototype.host` accessors pair
	    // https://url.spec.whatwg.org/#dom-url-host
	    host: accessorDescriptor(getHost, function (host) {
	      var url = getInternalURLState(this);
	      if (url.cannotBeABaseURL) return;
	      parseURL(url, String(host), HOST);
	    }),
	    // `URL.prototype.hostname` accessors pair
	    // https://url.spec.whatwg.org/#dom-url-hostname
	    hostname: accessorDescriptor(getHostname, function (hostname) {
	      var url = getInternalURLState(this);
	      if (url.cannotBeABaseURL) return;
	      parseURL(url, String(hostname), HOSTNAME);
	    }),
	    // `URL.prototype.port` accessors pair
	    // https://url.spec.whatwg.org/#dom-url-port
	    port: accessorDescriptor(getPort, function (port) {
	      var url = getInternalURLState(this);
	      if (cannotHaveUsernamePasswordPort(url)) return;
	      port = String(port);
	      if (port == '') url.port = null;
	      else parseURL(url, port, PORT);
	    }),
	    // `URL.prototype.pathname` accessors pair
	    // https://url.spec.whatwg.org/#dom-url-pathname
	    pathname: accessorDescriptor(getPathname, function (pathname) {
	      var url = getInternalURLState(this);
	      if (url.cannotBeABaseURL) return;
	      url.path = [];
	      parseURL(url, pathname + '', PATH_START);
	    }),
	    // `URL.prototype.search` accessors pair
	    // https://url.spec.whatwg.org/#dom-url-search
	    search: accessorDescriptor(getSearch, function (search) {
	      var url = getInternalURLState(this);
	      search = String(search);
	      if (search == '') {
	        url.query = null;
	      } else {
	        if ('?' == search.charAt(0)) search = search.slice(1);
	        url.query = '';
	        parseURL(url, search, QUERY);
	      }
	      getInternalSearchParamsState(url.searchParams).updateSearchParams(url.query);
	    }),
	    // `URL.prototype.searchParams` getter
	    // https://url.spec.whatwg.org/#dom-url-searchparams
	    searchParams: accessorDescriptor(getSearchParams),
	    // `URL.prototype.hash` accessors pair
	    // https://url.spec.whatwg.org/#dom-url-hash
	    hash: accessorDescriptor(getHash, function (hash) {
	      var url = getInternalURLState(this);
	      hash = String(hash);
	      if (hash == '') {
	        url.fragment = null;
	        return;
	      }
	      if ('#' == hash.charAt(0)) hash = hash.slice(1);
	      url.fragment = '';
	      parseURL(url, hash, FRAGMENT);
	    })
	  });
	}

	// `URL.prototype.toJSON` method
	// https://url.spec.whatwg.org/#dom-url-tojson
	redefine(URLPrototype, 'toJSON', function toJSON() {
	  return serializeURL.call(this);
	}, { enumerable: true });

	// `URL.prototype.toString` method
	// https://url.spec.whatwg.org/#URL-stringification-behavior
	redefine(URLPrototype, 'toString', function toString() {
	  return serializeURL.call(this);
	}, { enumerable: true });

	if (NativeURL) {
	  var nativeCreateObjectURL = NativeURL.createObjectURL;
	  var nativeRevokeObjectURL = NativeURL.revokeObjectURL;
	  // `URL.createObjectURL` method
	  // https://developer.mozilla.org/en-US/docs/Web/API/URL/createObjectURL
	  // eslint-disable-next-line no-unused-vars
	  if (nativeCreateObjectURL) redefine(URLConstructor, 'createObjectURL', function createObjectURL(blob) {
	    return nativeCreateObjectURL.apply(NativeURL, arguments);
	  });
	  // `URL.revokeObjectURL` method
	  // https://developer.mozilla.org/en-US/docs/Web/API/URL/revokeObjectURL
	  // eslint-disable-next-line no-unused-vars
	  if (nativeRevokeObjectURL) redefine(URLConstructor, 'revokeObjectURL', function revokeObjectURL(url) {
	    return nativeRevokeObjectURL.apply(NativeURL, arguments);
	  });
	}

	setToStringTag(URLConstructor, 'URL');

	_export({ global: true, forced: !nativeUrl, sham: !descriptors }, {
	  URL: URLConstructor
	});

	// `URL.prototype.toJSON` method
	// https://url.spec.whatwg.org/#dom-url-tojson
	_export({ target: 'URL', proto: true, enumerable: true }, {
	  toJSON: function toJSON() {
	    return URL.prototype.toString.call(this);
	  }
	});

	function _typeof(obj) {
	  if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") {
	    _typeof = function (obj) {
	      return typeof obj;
	    };
	  } else {
	    _typeof = function (obj) {
	      return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
	    };
	  }

	  return _typeof(obj);
	}

	function _classCallCheck(instance, Constructor) {
	  if (!(instance instanceof Constructor)) {
	    throw new TypeError("Cannot call a class as a function");
	  }
	}

	function _defineProperties(target, props) {
	  for (var i = 0; i < props.length; i++) {
	    var descriptor = props[i];
	    descriptor.enumerable = descriptor.enumerable || false;
	    descriptor.configurable = true;
	    if ("value" in descriptor) descriptor.writable = true;
	    Object.defineProperty(target, descriptor.key, descriptor);
	  }
	}

	function _createClass(Constructor, protoProps, staticProps) {
	  if (protoProps) _defineProperties(Constructor.prototype, protoProps);
	  if (staticProps) _defineProperties(Constructor, staticProps);
	  return Constructor;
	}

	function _inherits(subClass, superClass) {
	  if (typeof superClass !== "function" && superClass !== null) {
	    throw new TypeError("Super expression must either be null or a function");
	  }

	  subClass.prototype = Object.create(superClass && superClass.prototype, {
	    constructor: {
	      value: subClass,
	      writable: true,
	      configurable: true
	    }
	  });
	  if (superClass) _setPrototypeOf(subClass, superClass);
	}

	function _getPrototypeOf(o) {
	  _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {
	    return o.__proto__ || Object.getPrototypeOf(o);
	  };
	  return _getPrototypeOf(o);
	}

	function _setPrototypeOf(o, p) {
	  _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {
	    o.__proto__ = p;
	    return o;
	  };

	  return _setPrototypeOf(o, p);
	}

	function _assertThisInitialized(self) {
	  if (self === void 0) {
	    throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
	  }

	  return self;
	}

	function _possibleConstructorReturn(self, call) {
	  if (call && (typeof call === "object" || typeof call === "function")) {
	    return call;
	  }

	  return _assertThisInitialized(self);
	}

	function _superPropBase(object, property) {
	  while (!Object.prototype.hasOwnProperty.call(object, property)) {
	    object = _getPrototypeOf(object);
	    if (object === null) break;
	  }

	  return object;
	}

	function _get(target, property, receiver) {
	  if (typeof Reflect !== "undefined" && Reflect.get) {
	    _get = Reflect.get;
	  } else {
	    _get = function _get(target, property, receiver) {
	      var base = _superPropBase(target, property);

	      if (!base) return;
	      var desc = Object.getOwnPropertyDescriptor(base, property);

	      if (desc.get) {
	        return desc.get.call(receiver);
	      }

	      return desc.value;
	    };
	  }

	  return _get(target, property, receiver || target);
	}

	function _toConsumableArray(arr) {
	  return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _nonIterableSpread();
	}

	function _arrayWithoutHoles(arr) {
	  if (Array.isArray(arr)) {
	    for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) arr2[i] = arr[i];

	    return arr2;
	  }
	}

	function _iterableToArray(iter) {
	  if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === "[object Arguments]") return Array.from(iter);
	}

	function _nonIterableSpread() {
	  throw new TypeError("Invalid attempt to spread non-iterable instance");
	}

	var lodash = createCommonjsModule(function (module, exports) {
	(function() {

	  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
	  var undefined$1;

	  /** Used as the semantic version number. */
	  var VERSION = '4.17.11';

	  /** Used as the size to enable large array optimizations. */
	  var LARGE_ARRAY_SIZE = 200;

	  /** Error message constants. */
	  var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.',
	      FUNC_ERROR_TEXT = 'Expected a function';

	  /** Used to stand-in for `undefined` hash values. */
	  var HASH_UNDEFINED = '__lodash_hash_undefined__';

	  /** Used as the maximum memoize cache size. */
	  var MAX_MEMOIZE_SIZE = 500;

	  /** Used as the internal argument placeholder. */
	  var PLACEHOLDER = '__lodash_placeholder__';

	  /** Used to compose bitmasks for cloning. */
	  var CLONE_DEEP_FLAG = 1,
	      CLONE_FLAT_FLAG = 2,
	      CLONE_SYMBOLS_FLAG = 4;

	  /** Used to compose bitmasks for value comparisons. */
	  var COMPARE_PARTIAL_FLAG = 1,
	      COMPARE_UNORDERED_FLAG = 2;

	  /** Used to compose bitmasks for function metadata. */
	  var WRAP_BIND_FLAG = 1,
	      WRAP_BIND_KEY_FLAG = 2,
	      WRAP_CURRY_BOUND_FLAG = 4,
	      WRAP_CURRY_FLAG = 8,
	      WRAP_CURRY_RIGHT_FLAG = 16,
	      WRAP_PARTIAL_FLAG = 32,
	      WRAP_PARTIAL_RIGHT_FLAG = 64,
	      WRAP_ARY_FLAG = 128,
	      WRAP_REARG_FLAG = 256,
	      WRAP_FLIP_FLAG = 512;

	  /** Used as default options for `_.truncate`. */
	  var DEFAULT_TRUNC_LENGTH = 30,
	      DEFAULT_TRUNC_OMISSION = '...';

	  /** Used to detect hot functions by number of calls within a span of milliseconds. */
	  var HOT_COUNT = 800,
	      HOT_SPAN = 16;

	  /** Used to indicate the type of lazy iteratees. */
	  var LAZY_FILTER_FLAG = 1,
	      LAZY_MAP_FLAG = 2,
	      LAZY_WHILE_FLAG = 3;

	  /** Used as references for various `Number` constants. */
	  var INFINITY = 1 / 0,
	      MAX_SAFE_INTEGER = 9007199254740991,
	      MAX_INTEGER = 1.7976931348623157e+308,
	      NAN = 0 / 0;

	  /** Used as references for the maximum length and index of an array. */
	  var MAX_ARRAY_LENGTH = 4294967295,
	      MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,
	      HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;

	  /** Used to associate wrap methods with their bit flags. */
	  var wrapFlags = [
	    ['ary', WRAP_ARY_FLAG],
	    ['bind', WRAP_BIND_FLAG],
	    ['bindKey', WRAP_BIND_KEY_FLAG],
	    ['curry', WRAP_CURRY_FLAG],
	    ['curryRight', WRAP_CURRY_RIGHT_FLAG],
	    ['flip', WRAP_FLIP_FLAG],
	    ['partial', WRAP_PARTIAL_FLAG],
	    ['partialRight', WRAP_PARTIAL_RIGHT_FLAG],
	    ['rearg', WRAP_REARG_FLAG]
	  ];

	  /** `Object#toString` result references. */
	  var argsTag = '[object Arguments]',
	      arrayTag = '[object Array]',
	      asyncTag = '[object AsyncFunction]',
	      boolTag = '[object Boolean]',
	      dateTag = '[object Date]',
	      domExcTag = '[object DOMException]',
	      errorTag = '[object Error]',
	      funcTag = '[object Function]',
	      genTag = '[object GeneratorFunction]',
	      mapTag = '[object Map]',
	      numberTag = '[object Number]',
	      nullTag = '[object Null]',
	      objectTag = '[object Object]',
	      promiseTag = '[object Promise]',
	      proxyTag = '[object Proxy]',
	      regexpTag = '[object RegExp]',
	      setTag = '[object Set]',
	      stringTag = '[object String]',
	      symbolTag = '[object Symbol]',
	      undefinedTag = '[object Undefined]',
	      weakMapTag = '[object WeakMap]',
	      weakSetTag = '[object WeakSet]';

	  var arrayBufferTag = '[object ArrayBuffer]',
	      dataViewTag = '[object DataView]',
	      float32Tag = '[object Float32Array]',
	      float64Tag = '[object Float64Array]',
	      int8Tag = '[object Int8Array]',
	      int16Tag = '[object Int16Array]',
	      int32Tag = '[object Int32Array]',
	      uint8Tag = '[object Uint8Array]',
	      uint8ClampedTag = '[object Uint8ClampedArray]',
	      uint16Tag = '[object Uint16Array]',
	      uint32Tag = '[object Uint32Array]';

	  /** Used to match empty string literals in compiled template source. */
	  var reEmptyStringLeading = /\b__p \+= '';/g,
	      reEmptyStringMiddle = /\b(__p \+=) '' \+/g,
	      reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g;

	  /** Used to match HTML entities and HTML characters. */
	  var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,
	      reUnescapedHtml = /[&<>"']/g,
	      reHasEscapedHtml = RegExp(reEscapedHtml.source),
	      reHasUnescapedHtml = RegExp(reUnescapedHtml.source);

	  /** Used to match template delimiters. */
	  var reEscape = /<%-([\s\S]+?)%>/g,
	      reEvaluate = /<%([\s\S]+?)%>/g,
	      reInterpolate = /<%=([\s\S]+?)%>/g;

	  /** Used to match property names within property paths. */
	  var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/,
	      reIsPlainProp = /^\w*$/,
	      rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;

	  /**
	   * Used to match `RegExp`
	   * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
	   */
	  var reRegExpChar = /[\\^$.*+?()[\]{}|]/g,
	      reHasRegExpChar = RegExp(reRegExpChar.source);

	  /** Used to match leading and trailing whitespace. */
	  var reTrim = /^\s+|\s+$/g,
	      reTrimStart = /^\s+/,
	      reTrimEnd = /\s+$/;

	  /** Used to match wrap detail comments. */
	  var reWrapComment = /\{(?:\n\/\* \[wrapped with .+\] \*\/)?\n?/,
	      reWrapDetails = /\{\n\/\* \[wrapped with (.+)\] \*/,
	      reSplitDetails = /,? & /;

	  /** Used to match words composed of alphanumeric characters. */
	  var reAsciiWord = /[^\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]+/g;

	  /** Used to match backslashes in property paths. */
	  var reEscapeChar = /\\(\\)?/g;

	  /**
	   * Used to match
	   * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).
	   */
	  var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g;

	  /** Used to match `RegExp` flags from their coerced string values. */
	  var reFlags = /\w*$/;

	  /** Used to detect bad signed hexadecimal string values. */
	  var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;

	  /** Used to detect binary string values. */
	  var reIsBinary = /^0b[01]+$/i;

	  /** Used to detect host constructors (Safari). */
	  var reIsHostCtor = /^\[object .+?Constructor\]$/;

	  /** Used to detect octal string values. */
	  var reIsOctal = /^0o[0-7]+$/i;

	  /** Used to detect unsigned integer values. */
	  var reIsUint = /^(?:0|[1-9]\d*)$/;

	  /** Used to match Latin Unicode letters (excluding mathematical operators). */
	  var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g;

	  /** Used to ensure capturing order of template delimiters. */
	  var reNoMatch = /($^)/;

	  /** Used to match unescaped characters in compiled string literals. */
	  var reUnescapedString = /['\n\r\u2028\u2029\\]/g;

	  /** Used to compose unicode character classes. */
	  var rsAstralRange = '\\ud800-\\udfff',
	      rsComboMarksRange = '\\u0300-\\u036f',
	      reComboHalfMarksRange = '\\ufe20-\\ufe2f',
	      rsComboSymbolsRange = '\\u20d0-\\u20ff',
	      rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,
	      rsDingbatRange = '\\u2700-\\u27bf',
	      rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff',
	      rsMathOpRange = '\\xac\\xb1\\xd7\\xf7',
	      rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf',
	      rsPunctuationRange = '\\u2000-\\u206f',
	      rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000',
	      rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde',
	      rsVarRange = '\\ufe0e\\ufe0f',
	      rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;

	  /** Used to compose unicode capture groups. */
	  var rsApos = "['\u2019]",
	      rsAstral = '[' + rsAstralRange + ']',
	      rsBreak = '[' + rsBreakRange + ']',
	      rsCombo = '[' + rsComboRange + ']',
	      rsDigits = '\\d+',
	      rsDingbat = '[' + rsDingbatRange + ']',
	      rsLower = '[' + rsLowerRange + ']',
	      rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',
	      rsFitz = '\\ud83c[\\udffb-\\udfff]',
	      rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
	      rsNonAstral = '[^' + rsAstralRange + ']',
	      rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
	      rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
	      rsUpper = '[' + rsUpperRange + ']',
	      rsZWJ = '\\u200d';

	  /** Used to compose unicode regexes. */
	  var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',
	      rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',
	      rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',
	      rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',
	      reOptMod = rsModifier + '?',
	      rsOptVar = '[' + rsVarRange + ']?',
	      rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
	      rsOrdLower = '\\d*(?:1st|2nd|3rd|(?![123])\\dth)(?=\\b|[A-Z_])',
	      rsOrdUpper = '\\d*(?:1ST|2ND|3RD|(?![123])\\dTH)(?=\\b|[a-z_])',
	      rsSeq = rsOptVar + reOptMod + rsOptJoin,
	      rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,
	      rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';

	  /** Used to match apostrophes. */
	  var reApos = RegExp(rsApos, 'g');

	  /**
	   * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and
	   * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).
	   */
	  var reComboMark = RegExp(rsCombo, 'g');

	  /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
	  var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');

	  /** Used to match complex or compound words. */
	  var reUnicodeWord = RegExp([
	    rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',
	    rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')',
	    rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower,
	    rsUpper + '+' + rsOptContrUpper,
	    rsOrdUpper,
	    rsOrdLower,
	    rsDigits,
	    rsEmoji
	  ].join('|'), 'g');

	  /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */
	  var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange  + rsComboRange + rsVarRange + ']');

	  /** Used to detect strings that need a more robust regexp to match words. */
	  var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;

	  /** Used to assign default `context` object properties. */
	  var contextProps = [
	    'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array',
	    'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object',
	    'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array',
	    'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap',
	    '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout'
	  ];

	  /** Used to make template sourceURLs easier to identify. */
	  var templateCounter = -1;

	  /** Used to identify `toStringTag` values of typed arrays. */
	  var typedArrayTags = {};
	  typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =
	  typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =
	  typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =
	  typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =
	  typedArrayTags[uint32Tag] = true;
	  typedArrayTags[argsTag] = typedArrayTags[arrayTag] =
	  typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =
	  typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =
	  typedArrayTags[errorTag] = typedArrayTags[funcTag] =
	  typedArrayTags[mapTag] = typedArrayTags[numberTag] =
	  typedArrayTags[objectTag] = typedArrayTags[regexpTag] =
	  typedArrayTags[setTag] = typedArrayTags[stringTag] =
	  typedArrayTags[weakMapTag] = false;

	  /** Used to identify `toStringTag` values supported by `_.clone`. */
	  var cloneableTags = {};
	  cloneableTags[argsTag] = cloneableTags[arrayTag] =
	  cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =
	  cloneableTags[boolTag] = cloneableTags[dateTag] =
	  cloneableTags[float32Tag] = cloneableTags[float64Tag] =
	  cloneableTags[int8Tag] = cloneableTags[int16Tag] =
	  cloneableTags[int32Tag] = cloneableTags[mapTag] =
	  cloneableTags[numberTag] = cloneableTags[objectTag] =
	  cloneableTags[regexpTag] = cloneableTags[setTag] =
	  cloneableTags[stringTag] = cloneableTags[symbolTag] =
	  cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =
	  cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;
	  cloneableTags[errorTag] = cloneableTags[funcTag] =
	  cloneableTags[weakMapTag] = false;

	  /** Used to map Latin Unicode letters to basic Latin letters. */
	  var deburredLetters = {
	    // Latin-1 Supplement block.
	    '\xc0': 'A',  '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A',
	    '\xe0': 'a',  '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a',
	    '\xc7': 'C',  '\xe7': 'c',
	    '\xd0': 'D',  '\xf0': 'd',
	    '\xc8': 'E',  '\xc9': 'E', '\xca': 'E', '\xcb': 'E',
	    '\xe8': 'e',  '\xe9': 'e', '\xea': 'e', '\xeb': 'e',
	    '\xcc': 'I',  '\xcd': 'I', '\xce': 'I', '\xcf': 'I',
	    '\xec': 'i',  '\xed': 'i', '\xee': 'i', '\xef': 'i',
	    '\xd1': 'N',  '\xf1': 'n',
	    '\xd2': 'O',  '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O',
	    '\xf2': 'o',  '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o',
	    '\xd9': 'U',  '\xda': 'U', '\xdb': 'U', '\xdc': 'U',
	    '\xf9': 'u',  '\xfa': 'u', '\xfb': 'u', '\xfc': 'u',
	    '\xdd': 'Y',  '\xfd': 'y', '\xff': 'y',
	    '\xc6': 'Ae', '\xe6': 'ae',
	    '\xde': 'Th', '\xfe': 'th',
	    '\xdf': 'ss',
	    // Latin Extended-A block.
	    '\u0100': 'A',  '\u0102': 'A', '\u0104': 'A',
	    '\u0101': 'a',  '\u0103': 'a', '\u0105': 'a',
	    '\u0106': 'C',  '\u0108': 'C', '\u010a': 'C', '\u010c': 'C',
	    '\u0107': 'c',  '\u0109': 'c', '\u010b': 'c', '\u010d': 'c',
	    '\u010e': 'D',  '\u0110': 'D', '\u010f': 'd', '\u0111': 'd',
	    '\u0112': 'E',  '\u0114': 'E', '\u0116': 'E', '\u0118': 'E', '\u011a': 'E',
	    '\u0113': 'e',  '\u0115': 'e', '\u0117': 'e', '\u0119': 'e', '\u011b': 'e',
	    '\u011c': 'G',  '\u011e': 'G', '\u0120': 'G', '\u0122': 'G',
	    '\u011d': 'g',  '\u011f': 'g', '\u0121': 'g', '\u0123': 'g',
	    '\u0124': 'H',  '\u0126': 'H', '\u0125': 'h', '\u0127': 'h',
	    '\u0128': 'I',  '\u012a': 'I', '\u012c': 'I', '\u012e': 'I', '\u0130': 'I',
	    '\u0129': 'i',  '\u012b': 'i', '\u012d': 'i', '\u012f': 'i', '\u0131': 'i',
	    '\u0134': 'J',  '\u0135': 'j',
	    '\u0136': 'K',  '\u0137': 'k', '\u0138': 'k',
	    '\u0139': 'L',  '\u013b': 'L', '\u013d': 'L', '\u013f': 'L', '\u0141': 'L',
	    '\u013a': 'l',  '\u013c': 'l', '\u013e': 'l', '\u0140': 'l', '\u0142': 'l',
	    '\u0143': 'N',  '\u0145': 'N', '\u0147': 'N', '\u014a': 'N',
	    '\u0144': 'n',  '\u0146': 'n', '\u0148': 'n', '\u014b': 'n',
	    '\u014c': 'O',  '\u014e': 'O', '\u0150': 'O',
	    '\u014d': 'o',  '\u014f': 'o', '\u0151': 'o',
	    '\u0154': 'R',  '\u0156': 'R', '\u0158': 'R',
	    '\u0155': 'r',  '\u0157': 'r', '\u0159': 'r',
	    '\u015a': 'S',  '\u015c': 'S', '\u015e': 'S', '\u0160': 'S',
	    '\u015b': 's',  '\u015d': 's', '\u015f': 's', '\u0161': 's',
	    '\u0162': 'T',  '\u0164': 'T', '\u0166': 'T',
	    '\u0163': 't',  '\u0165': 't', '\u0167': 't',
	    '\u0168': 'U',  '\u016a': 'U', '\u016c': 'U', '\u016e': 'U', '\u0170': 'U', '\u0172': 'U',
	    '\u0169': 'u',  '\u016b': 'u', '\u016d': 'u', '\u016f': 'u', '\u0171': 'u', '\u0173': 'u',
	    '\u0174': 'W',  '\u0175': 'w',
	    '\u0176': 'Y',  '\u0177': 'y', '\u0178': 'Y',
	    '\u0179': 'Z',  '\u017b': 'Z', '\u017d': 'Z',
	    '\u017a': 'z',  '\u017c': 'z', '\u017e': 'z',
	    '\u0132': 'IJ', '\u0133': 'ij',
	    '\u0152': 'Oe', '\u0153': 'oe',
	    '\u0149': "'n", '\u017f': 's'
	  };

	  /** Used to map characters to HTML entities. */
	  var htmlEscapes = {
	    '&': '&amp;',
	    '<': '&lt;',
	    '>': '&gt;',
	    '"': '&quot;',
	    "'": '&#39;'
	  };

	  /** Used to map HTML entities to characters. */
	  var htmlUnescapes = {
	    '&amp;': '&',
	    '&lt;': '<',
	    '&gt;': '>',
	    '&quot;': '"',
	    '&#39;': "'"
	  };

	  /** Used to escape characters for inclusion in compiled string literals. */
	  var stringEscapes = {
	    '\\': '\\',
	    "'": "'",
	    '\n': 'n',
	    '\r': 'r',
	    '\u2028': 'u2028',
	    '\u2029': 'u2029'
	  };

	  /** Built-in method references without a dependency on `root`. */
	  var freeParseFloat = parseFloat,
	      freeParseInt = parseInt;

	  /** Detect free variable `global` from Node.js. */
	  var freeGlobal = typeof commonjsGlobal == 'object' && commonjsGlobal && commonjsGlobal.Object === Object && commonjsGlobal;

	  /** Detect free variable `self`. */
	  var freeSelf = typeof self == 'object' && self && self.Object === Object && self;

	  /** Used as a reference to the global object. */
	  var root = freeGlobal || freeSelf || Function('return this')();

	  /** Detect free variable `exports`. */
	  var freeExports = exports && !exports.nodeType && exports;

	  /** Detect free variable `module`. */
	  var freeModule = freeExports && 'object' == 'object' && module && !module.nodeType && module;

	  /** Detect the popular CommonJS extension `module.exports`. */
	  var moduleExports = freeModule && freeModule.exports === freeExports;

	  /** Detect free variable `process` from Node.js. */
	  var freeProcess = moduleExports && freeGlobal.process;

	  /** Used to access faster Node.js helpers. */
	  var nodeUtil = (function() {
	    try {
	      // Use `util.types` for Node.js 10+.
	      var types = freeModule && freeModule.require && freeModule.require('util').types;

	      if (types) {
	        return types;
	      }

	      // Legacy `process.binding('util')` for Node.js < 10.
	      return freeProcess && freeProcess.binding && freeProcess.binding('util');
	    } catch (e) {}
	  }());

	  /* Node.js helper references. */
	  var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer,
	      nodeIsDate = nodeUtil && nodeUtil.isDate,
	      nodeIsMap = nodeUtil && nodeUtil.isMap,
	      nodeIsRegExp = nodeUtil && nodeUtil.isRegExp,
	      nodeIsSet = nodeUtil && nodeUtil.isSet,
	      nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;

	  /*--------------------------------------------------------------------------*/

	  /**
	   * A faster alternative to `Function#apply`, this function invokes `func`
	   * with the `this` binding of `thisArg` and the arguments of `args`.
	   *
	   * @private
	   * @param {Function} func The function to invoke.
	   * @param {*} thisArg The `this` binding of `func`.
	   * @param {Array} args The arguments to invoke `func` with.
	   * @returns {*} Returns the result of `func`.
	   */
	  function apply(func, thisArg, args) {
	    switch (args.length) {
	      case 0: return func.call(thisArg);
	      case 1: return func.call(thisArg, args[0]);
	      case 2: return func.call(thisArg, args[0], args[1]);
	      case 3: return func.call(thisArg, args[0], args[1], args[2]);
	    }
	    return func.apply(thisArg, args);
	  }

	  /**
	   * A specialized version of `baseAggregator` for arrays.
	   *
	   * @private
	   * @param {Array} [array] The array to iterate over.
	   * @param {Function} setter The function to set `accumulator` values.
	   * @param {Function} iteratee The iteratee to transform keys.
	   * @param {Object} accumulator The initial aggregated object.
	   * @returns {Function} Returns `accumulator`.
	   */
	  function arrayAggregator(array, setter, iteratee, accumulator) {
	    var index = -1,
	        length = array == null ? 0 : array.length;

	    while (++index < length) {
	      var value = array[index];
	      setter(accumulator, value, iteratee(value), array);
	    }
	    return accumulator;
	  }

	  /**
	   * A specialized version of `_.forEach` for arrays without support for
	   * iteratee shorthands.
	   *
	   * @private
	   * @param {Array} [array] The array to iterate over.
	   * @param {Function} iteratee The function invoked per iteration.
	   * @returns {Array} Returns `array`.
	   */
	  function arrayEach(array, iteratee) {
	    var index = -1,
	        length = array == null ? 0 : array.length;

	    while (++index < length) {
	      if (iteratee(array[index], index, array) === false) {
	        break;
	      }
	    }
	    return array;
	  }

	  /**
	   * A specialized version of `_.forEachRight` for arrays without support for
	   * iteratee shorthands.
	   *
	   * @private
	   * @param {Array} [array] The array to iterate over.
	   * @param {Function} iteratee The function invoked per iteration.
	   * @returns {Array} Returns `array`.
	   */
	  function arrayEachRight(array, iteratee) {
	    var length = array == null ? 0 : array.length;

	    while (length--) {
	      if (iteratee(array[length], length, array) === false) {
	        break;
	      }
	    }
	    return array;
	  }

	  /**
	   * A specialized version of `_.every` for arrays without support for
	   * iteratee shorthands.
	   *
	   * @private
	   * @param {Array} [array] The array to iterate over.
	   * @param {Function} predicate The function invoked per iteration.
	   * @returns {boolean} Returns `true` if all elements pass the predicate check,
	   *  else `false`.
	   */
	  function arrayEvery(array, predicate) {
	    var index = -1,
	        length = array == null ? 0 : array.length;

	    while (++index < length) {
	      if (!predicate(array[index], index, array)) {
	        return false;
	      }
	    }
	    return true;
	  }

	  /**
	   * A specialized version of `_.filter` for arrays without support for
	   * iteratee shorthands.
	   *
	   * @private
	   * @param {Array} [array] The array to iterate over.
	   * @param {Function} predicate The function invoked per iteration.
	   * @returns {Array} Returns the new filtered array.
	   */
	  function arrayFilter(array, predicate) {
	    var index = -1,
	        length = array == null ? 0 : array.length,
	        resIndex = 0,
	        result = [];

	    while (++index < length) {
	      var value = array[index];
	      if (predicate(value, index, array)) {
	        result[resIndex++] = value;
	      }
	    }
	    return result;
	  }

	  /**
	   * A specialized version of `_.includes` for arrays without support for
	   * specifying an index to search from.
	   *
	   * @private
	   * @param {Array} [array] The array to inspect.
	   * @param {*} target The value to search for.
	   * @returns {boolean} Returns `true` if `target` is found, else `false`.
	   */
	  function arrayIncludes(array, value) {
	    var length = array == null ? 0 : array.length;
	    return !!length && baseIndexOf(array, value, 0) > -1;
	  }

	  /**
	   * This function is like `arrayIncludes` except that it accepts a comparator.
	   *
	   * @private
	   * @param {Array} [array] The array to inspect.
	   * @param {*} target The value to search for.
	   * @param {Function} comparator The comparator invoked per element.
	   * @returns {boolean} Returns `true` if `target` is found, else `false`.
	   */
	  function arrayIncludesWith(array, value, comparator) {
	    var index = -1,
	        length = array == null ? 0 : array.length;

	    while (++index < length) {
	      if (comparator(value, array[index])) {
	        return true;
	      }
	    }
	    return false;
	  }

	  /**
	   * A specialized version of `_.map` for arrays without support for iteratee
	   * shorthands.
	   *
	   * @private
	   * @param {Array} [array] The array to iterate over.
	   * @param {Function} iteratee The function invoked per iteration.
	   * @returns {Array} Returns the new mapped array.
	   */
	  function arrayMap(array, iteratee) {
	    var index = -1,
	        length = array == null ? 0 : array.length,
	        result = Array(length);

	    while (++index < length) {
	      result[index] = iteratee(array[index], index, array);
	    }
	    return result;
	  }

	  /**
	   * Appends the elements of `values` to `array`.
	   *
	   * @private
	   * @param {Array} array The array to modify.
	   * @param {Array} values The values to append.
	   * @returns {Array} Returns `array`.
	   */
	  function arrayPush(array, values) {
	    var index = -1,
	        length = values.length,
	        offset = array.length;

	    while (++index < length) {
	      array[offset + index] = values[index];
	    }
	    return array;
	  }

	  /**
	   * A specialized version of `_.reduce` for arrays without support for
	   * iteratee shorthands.
	   *
	   * @private
	   * @param {Array} [array] The array to iterate over.
	   * @param {Function} iteratee The function invoked per iteration.
	   * @param {*} [accumulator] The initial value.
	   * @param {boolean} [initAccum] Specify using the first element of `array` as
	   *  the initial value.
	   * @returns {*} Returns the accumulated value.
	   */
	  function arrayReduce(array, iteratee, accumulator, initAccum) {
	    var index = -1,
	        length = array == null ? 0 : array.length;

	    if (initAccum && length) {
	      accumulator = array[++index];
	    }
	    while (++index < length) {
	      accumulator = iteratee(accumulator, array[index], index, array);
	    }
	    return accumulator;
	  }

	  /**
	   * A specialized version of `_.reduceRight` for arrays without support for
	   * iteratee shorthands.
	   *
	   * @private
	   * @param {Array} [array] The array to iterate over.
	   * @param {Function} iteratee The function invoked per iteration.
	   * @param {*} [accumulator] The initial value.
	   * @param {boolean} [initAccum] Specify using the last element of `array` as
	   *  the initial value.
	   * @returns {*} Returns the accumulated value.
	   */
	  function arrayReduceRight(array, iteratee, accumulator, initAccum) {
	    var length = array == null ? 0 : array.length;
	    if (initAccum && length) {
	      accumulator = array[--length];
	    }
	    while (length--) {
	      accumulator = iteratee(accumulator, array[length], length, array);
	    }
	    return accumulator;
	  }

	  /**
	   * A specialized version of `_.some` for arrays without support for iteratee
	   * shorthands.
	   *
	   * @private
	   * @param {Array} [array] The array to iterate over.
	   * @param {Function} predicate The function invoked per iteration.
	   * @returns {boolean} Returns `true` if any element passes the predicate check,
	   *  else `false`.
	   */
	  function arraySome(array, predicate) {
	    var index = -1,
	        length = array == null ? 0 : array.length;

	    while (++index < length) {
	      if (predicate(array[index], index, array)) {
	        return true;
	      }
	    }
	    return false;
	  }

	  /**
	   * Gets the size of an ASCII `string`.
	   *
	   * @private
	   * @param {string} string The string inspect.
	   * @returns {number} Returns the string size.
	   */
	  var asciiSize = baseProperty('length');

	  /**
	   * Converts an ASCII `string` to an array.
	   *
	   * @private
	   * @param {string} string The string to convert.
	   * @returns {Array} Returns the converted array.
	   */
	  function asciiToArray(string) {
	    return string.split('');
	  }

	  /**
	   * Splits an ASCII `string` into an array of its words.
	   *
	   * @private
	   * @param {string} The string to inspect.
	   * @returns {Array} Returns the words of `string`.
	   */
	  function asciiWords(string) {
	    return string.match(reAsciiWord) || [];
	  }

	  /**
	   * The base implementation of methods like `_.findKey` and `_.findLastKey`,
	   * without support for iteratee shorthands, which iterates over `collection`
	   * using `eachFunc`.
	   *
	   * @private
	   * @param {Array|Object} collection The collection to inspect.
	   * @param {Function} predicate The function invoked per iteration.
	   * @param {Function} eachFunc The function to iterate over `collection`.
	   * @returns {*} Returns the found element or its key, else `undefined`.
	   */
	  function baseFindKey(collection, predicate, eachFunc) {
	    var result;
	    eachFunc(collection, function(value, key, collection) {
	      if (predicate(value, key, collection)) {
	        result = key;
	        return false;
	      }
	    });
	    return result;
	  }

	  /**
	   * The base implementation of `_.findIndex` and `_.findLastIndex` without
	   * support for iteratee shorthands.
	   *
	   * @private
	   * @param {Array} array The array to inspect.
	   * @param {Function} predicate The function invoked per iteration.
	   * @param {number} fromIndex The index to search from.
	   * @param {boolean} [fromRight] Specify iterating from right to left.
	   * @returns {number} Returns the index of the matched value, else `-1`.
	   */
	  function baseFindIndex(array, predicate, fromIndex, fromRight) {
	    var length = array.length,
	        index = fromIndex + (fromRight ? 1 : -1);

	    while ((fromRight ? index-- : ++index < length)) {
	      if (predicate(array[index], index, array)) {
	        return index;
	      }
	    }
	    return -1;
	  }

	  /**
	   * The base implementation of `_.indexOf` without `fromIndex` bounds checks.
	   *
	   * @private
	   * @param {Array} array The array to inspect.
	   * @param {*} value The value to search for.
	   * @param {number} fromIndex The index to search from.
	   * @returns {number} Returns the index of the matched value, else `-1`.
	   */
	  function baseIndexOf(array, value, fromIndex) {
	    return value === value
	      ? strictIndexOf(array, value, fromIndex)
	      : baseFindIndex(array, baseIsNaN, fromIndex);
	  }

	  /**
	   * This function is like `baseIndexOf` except that it accepts a comparator.
	   *
	   * @private
	   * @param {Array} array The array to inspect.
	   * @param {*} value The value to search for.
	   * @param {number} fromIndex The index to search from.
	   * @param {Function} comparator The comparator invoked per element.
	   * @returns {number} Returns the index of the matched value, else `-1`.
	   */
	  function baseIndexOfWith(array, value, fromIndex, comparator) {
	    var index = fromIndex - 1,
	        length = array.length;

	    while (++index < length) {
	      if (comparator(array[index], value)) {
	        return index;
	      }
	    }
	    return -1;
	  }

	  /**
	   * The base implementation of `_.isNaN` without support for number objects.
	   *
	   * @private
	   * @param {*} value The value to check.
	   * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
	   */
	  function baseIsNaN(value) {
	    return value !== value;
	  }

	  /**
	   * The base implementation of `_.mean` and `_.meanBy` without support for
	   * iteratee shorthands.
	   *
	   * @private
	   * @param {Array} array The array to iterate over.
	   * @param {Function} iteratee The function invoked per iteration.
	   * @returns {number} Returns the mean.
	   */
	  function baseMean(array, iteratee) {
	    var length = array == null ? 0 : array.length;
	    return length ? (baseSum(array, iteratee) / length) : NAN;
	  }

	  /**
	   * The base implementation of `_.property` without support for deep paths.
	   *
	   * @private
	   * @param {string} key The key of the property to get.
	   * @returns {Function} Returns the new accessor function.
	   */
	  function baseProperty(key) {
	    return function(object) {
	      return object == null ? undefined$1 : object[key];
	    };
	  }

	  /**
	   * The base implementation of `_.propertyOf` without support for deep paths.
	   *
	   * @private
	   * @param {Object} object The object to query.
	   * @returns {Function} Returns the new accessor function.
	   */
	  function basePropertyOf(object) {
	    return function(key) {
	      return object == null ? undefined$1 : object[key];
	    };
	  }

	  /**
	   * The base implementation of `_.reduce` and `_.reduceRight`, without support
	   * for iteratee shorthands, which iterates over `collection` using `eachFunc`.
	   *
	   * @private
	   * @param {Array|Object} collection The collection to iterate over.
	   * @param {Function} iteratee The function invoked per iteration.
	   * @param {*} accumulator The initial value.
	   * @param {boolean} initAccum Specify using the first or last element of
	   *  `collection` as the initial value.
	   * @param {Function} eachFunc The function to iterate over `collection`.
	   * @returns {*} Returns the accumulated value.
	   */
	  function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {
	    eachFunc(collection, function(value, index, collection) {
	      accumulator = initAccum
	        ? (initAccum = false, value)
	        : iteratee(accumulator, value, index, collection);
	    });
	    return accumulator;
	  }

	  /**
	   * The base implementation of `_.sortBy` which uses `comparer` to define the
	   * sort order of `array` and replaces criteria objects with their corresponding
	   * values.
	   *
	   * @private
	   * @param {Array} array The array to sort.
	   * @param {Function} comparer The function to define sort order.
	   * @returns {Array} Returns `array`.
	   */
	  function baseSortBy(array, comparer) {
	    var length = array.length;

	    array.sort(comparer);
	    while (length--) {
	      array[length] = array[length].value;
	    }
	    return array;
	  }

	  /**
	   * The base implementation of `_.sum` and `_.sumBy` without support for
	   * iteratee shorthands.
	   *
	   * @private
	   * @param {Array} array The array to iterate over.
	   * @param {Function} iteratee The function invoked per iteration.
	   * @returns {number} Returns the sum.
	   */
	  function baseSum(array, iteratee) {
	    var result,
	        index = -1,
	        length = array.length;

	    while (++index < length) {
	      var current = iteratee(array[index]);
	      if (current !== undefined$1) {
	        result = result === undefined$1 ? current : (result + current);
	      }
	    }
	    return result;
	  }

	  /**
	   * The base implementation of `_.times` without support for iteratee shorthands
	   * or max array length checks.
	   *
	   * @private
	   * @param {number} n The number of times to invoke `iteratee`.
	   * @param {Function} iteratee The function invoked per iteration.
	   * @returns {Array} Returns the array of results.
	   */
	  function baseTimes(n, iteratee) {
	    var index = -1,
	        result = Array(n);

	    while (++index < n) {
	      result[index] = iteratee(index);
	    }
	    return result;
	  }

	  /**
	   * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array
	   * of key-value pairs for `object` corresponding to the property names of `props`.
	   *
	   * @private
	   * @param {Object} object The object to query.
	   * @param {Array} props The property names to get values for.
	   * @returns {Object} Returns the key-value pairs.
	   */
	  function baseToPairs(object, props) {
	    return arrayMap(props, function(key) {
	      return [key, object[key]];
	    });
	  }

	  /**
	   * The base implementation of `_.unary` without support for storing metadata.
	   *
	   * @private
	   * @param {Function} func The function to cap arguments for.
	   * @returns {Function} Returns the new capped function.
	   */
	  function baseUnary(func) {
	    return function(value) {
	      return func(value);
	    };
	  }

	  /**
	   * The base implementation of `_.values` and `_.valuesIn` which creates an
	   * array of `object` property values corresponding to the property names
	   * of `props`.
	   *
	   * @private
	   * @param {Object} object The object to query.
	   * @param {Array} props The property names to get values for.
	   * @returns {Object} Returns the array of property values.
	   */
	  function baseValues(object, props) {
	    return arrayMap(props, function(key) {
	      return object[key];
	    });
	  }

	  /**
	   * Checks if a `cache` value for `key` exists.
	   *
	   * @private
	   * @param {Object} cache The cache to query.
	   * @param {string} key The key of the entry to check.
	   * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
	   */
	  function cacheHas(cache, key) {
	    return cache.has(key);
	  }

	  /**
	   * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol
	   * that is not found in the character symbols.
	   *
	   * @private
	   * @param {Array} strSymbols The string symbols to inspect.
	   * @param {Array} chrSymbols The character symbols to find.
	   * @returns {number} Returns the index of the first unmatched string symbol.
	   */
	  function charsStartIndex(strSymbols, chrSymbols) {
	    var index = -1,
	        length = strSymbols.length;

	    while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
	    return index;
	  }

	  /**
	   * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol
	   * that is not found in the character symbols.
	   *
	   * @private
	   * @param {Array} strSymbols The string symbols to inspect.
	   * @param {Array} chrSymbols The character symbols to find.
	   * @returns {number} Returns the index of the last unmatched string symbol.
	   */
	  function charsEndIndex(strSymbols, chrSymbols) {
	    var index = strSymbols.length;

	    while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
	    return index;
	  }

	  /**
	   * Gets the number of `placeholder` occurrences in `array`.
	   *
	   * @private
	   * @param {Array} array The array to inspect.
	   * @param {*} placeholder The placeholder to search for.
	   * @returns {number} Returns the placeholder count.
	   */
	  function countHolders(array, placeholder) {
	    var length = array.length,
	        result = 0;

	    while (length--) {
	      if (array[length] === placeholder) {
	        ++result;
	      }
	    }
	    return result;
	  }

	  /**
	   * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A
	   * letters to basic Latin letters.
	   *
	   * @private
	   * @param {string} letter The matched letter to deburr.
	   * @returns {string} Returns the deburred letter.
	   */
	  var deburrLetter = basePropertyOf(deburredLetters);

	  /**
	   * Used by `_.escape` to convert characters to HTML entities.
	   *
	   * @private
	   * @param {string} chr The matched character to escape.
	   * @returns {string} Returns the escaped character.
	   */
	  var escapeHtmlChar = basePropertyOf(htmlEscapes);

	  /**
	   * Used by `_.template` to escape characters for inclusion in compiled string literals.
	   *
	   * @private
	   * @param {string} chr The matched character to escape.
	   * @returns {string} Returns the escaped character.
	   */
	  function escapeStringChar(chr) {
	    return '\\' + stringEscapes[chr];
	  }

	  /**
	   * Gets the value at `key` of `object`.
	   *
	   * @private
	   * @param {Object} [object] The object to query.
	   * @param {string} key The key of the property to get.
	   * @returns {*} Returns the property value.
	   */
	  function getValue(object, key) {
	    return object == null ? undefined$1 : object[key];
	  }

	  /**
	   * Checks if `string` contains Unicode symbols.
	   *
	   * @private
	   * @param {string} string The string to inspect.
	   * @returns {boolean} Returns `true` if a symbol is found, else `false`.
	   */
	  function hasUnicode(string) {
	    return reHasUnicode.test(string);
	  }

	  /**
	   * Checks if `string` contains a word composed of Unicode symbols.
	   *
	   * @private
	   * @param {string} string The string to inspect.
	   * @returns {boolean} Returns `true` if a word is found, else `false`.
	   */
	  function hasUnicodeWord(string) {
	    return reHasUnicodeWord.test(string);
	  }

	  /**
	   * Converts `iterator` to an array.
	   *
	   * @private
	   * @param {Object} iterator The iterator to convert.
	   * @returns {Array} Returns the converted array.
	   */
	  function iteratorToArray(iterator) {
	    var data,
	        result = [];

	    while (!(data = iterator.next()).done) {
	      result.push(data.value);
	    }
	    return result;
	  }

	  /**
	   * Converts `map` to its key-value pairs.
	   *
	   * @private
	   * @param {Object} map The map to convert.
	   * @returns {Array} Returns the key-value pairs.
	   */
	  function mapToArray(map) {
	    var index = -1,
	        result = Array(map.size);

	    map.forEach(function(value, key) {
	      result[++index] = [key, value];
	    });
	    return result;
	  }

	  /**
	   * Creates a unary function that invokes `func` with its argument transformed.
	   *
	   * @private
	   * @param {Function} func The function to wrap.
	   * @param {Function} transform The argument transform.
	   * @returns {Function} Returns the new function.
	   */
	  function overArg(func, transform) {
	    return function(arg) {
	      return func(transform(arg));
	    };
	  }

	  /**
	   * Replaces all `placeholder` elements in `array` with an internal placeholder
	   * and returns an array of their indexes.
	   *
	   * @private
	   * @param {Array} array The array to modify.
	   * @param {*} placeholder The placeholder to replace.
	   * @returns {Array} Returns the new array of placeholder indexes.
	   */
	  function replaceHolders(array, placeholder) {
	    var index = -1,
	        length = array.length,
	        resIndex = 0,
	        result = [];

	    while (++index < length) {
	      var value = array[index];
	      if (value === placeholder || value === PLACEHOLDER) {
	        array[index] = PLACEHOLDER;
	        result[resIndex++] = index;
	      }
	    }
	    return result;
	  }

	  /**
	   * Converts `set` to an array of its values.
	   *
	   * @private
	   * @param {Object} set The set to convert.
	   * @returns {Array} Returns the values.
	   */
	  function setToArray(set) {
	    var index = -1,
	        result = Array(set.size);

	    set.forEach(function(value) {
	      result[++index] = value;
	    });
	    return result;
	  }

	  /**
	   * Converts `set` to its value-value pairs.
	   *
	   * @private
	   * @param {Object} set The set to convert.
	   * @returns {Array} Returns the value-value pairs.
	   */
	  function setToPairs(set) {
	    var index = -1,
	        result = Array(set.size);

	    set.forEach(function(value) {
	      result[++index] = [value, value];
	    });
	    return result;
	  }

	  /**
	   * A specialized version of `_.indexOf` which performs strict equality
	   * comparisons of values, i.e. `===`.
	   *
	   * @private
	   * @param {Array} array The array to inspect.
	   * @param {*} value The value to search for.
	   * @param {number} fromIndex The index to search from.
	   * @returns {number} Returns the index of the matched value, else `-1`.
	   */
	  function strictIndexOf(array, value, fromIndex) {
	    var index = fromIndex - 1,
	        length = array.length;

	    while (++index < length) {
	      if (array[index] === value) {
	        return index;
	      }
	    }
	    return -1;
	  }

	  /**
	   * A specialized version of `_.lastIndexOf` which performs strict equality
	   * comparisons of values, i.e. `===`.
	   *
	   * @private
	   * @param {Array} array The array to inspect.
	   * @param {*} value The value to search for.
	   * @param {number} fromIndex The index to search from.
	   * @returns {number} Returns the index of the matched value, else `-1`.
	   */
	  function strictLastIndexOf(array, value, fromIndex) {
	    var index = fromIndex + 1;
	    while (index--) {
	      if (array[index] === value) {
	        return index;
	      }
	    }
	    return index;
	  }

	  /**
	   * Gets the number of symbols in `string`.
	   *
	   * @private
	   * @param {string} string The string to inspect.
	   * @returns {number} Returns the string size.
	   */
	  function stringSize(string) {
	    return hasUnicode(string)
	      ? unicodeSize(string)
	      : asciiSize(string);
	  }

	  /**
	   * Converts `string` to an array.
	   *
	   * @private
	   * @param {string} string The string to convert.
	   * @returns {Array} Returns the converted array.
	   */
	  function stringToArray(string) {
	    return hasUnicode(string)
	      ? unicodeToArray(string)
	      : asciiToArray(string);
	  }

	  /**
	   * Used by `_.unescape` to convert HTML entities to characters.
	   *
	   * @private
	   * @param {string} chr The matched character to unescape.
	   * @returns {string} Returns the unescaped character.
	   */
	  var unescapeHtmlChar = basePropertyOf(htmlUnescapes);

	  /**
	   * Gets the size of a Unicode `string`.
	   *
	   * @private
	   * @param {string} string The string inspect.
	   * @returns {number} Returns the string size.
	   */
	  function unicodeSize(string) {
	    var result = reUnicode.lastIndex = 0;
	    while (reUnicode.test(string)) {
	      ++result;
	    }
	    return result;
	  }

	  /**
	   * Converts a Unicode `string` to an array.
	   *
	   * @private
	   * @param {string} string The string to convert.
	   * @returns {Array} Returns the converted array.
	   */
	  function unicodeToArray(string) {
	    return string.match(reUnicode) || [];
	  }

	  /**
	   * Splits a Unicode `string` into an array of its words.
	   *
	   * @private
	   * @param {string} The string to inspect.
	   * @returns {Array} Returns the words of `string`.
	   */
	  function unicodeWords(string) {
	    return string.match(reUnicodeWord) || [];
	  }

	  /*--------------------------------------------------------------------------*/

	  /**
	   * Create a new pristine `lodash` function using the `context` object.
	   *
	   * @static
	   * @memberOf _
	   * @since 1.1.0
	   * @category Util
	   * @param {Object} [context=root] The context object.
	   * @returns {Function} Returns a new `lodash` function.
	   * @example
	   *
	   * _.mixin({ 'foo': _.constant('foo') });
	   *
	   * var lodash = _.runInContext();
	   * lodash.mixin({ 'bar': lodash.constant('bar') });
	   *
	   * _.isFunction(_.foo);
	   * // => true
	   * _.isFunction(_.bar);
	   * // => false
	   *
	   * lodash.isFunction(lodash.foo);
	   * // => false
	   * lodash.isFunction(lodash.bar);
	   * // => true
	   *
	   * // Create a suped-up `defer` in Node.js.
	   * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;
	   */
	  var runInContext = (function runInContext(context) {
	    context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps));

	    /** Built-in constructor references. */
	    var Array = context.Array,
	        Date = context.Date,
	        Error = context.Error,
	        Function = context.Function,
	        Math = context.Math,
	        Object = context.Object,
	        RegExp = context.RegExp,
	        String = context.String,
	        TypeError = context.TypeError;

	    /** Used for built-in method references. */
	    var arrayProto = Array.prototype,
	        funcProto = Function.prototype,
	        objectProto = Object.prototype;

	    /** Used to detect overreaching core-js shims. */
	    var coreJsData = context['__core-js_shared__'];

	    /** Used to resolve the decompiled source of functions. */
	    var funcToString = funcProto.toString;

	    /** Used to check objects for own properties. */
	    var hasOwnProperty = objectProto.hasOwnProperty;

	    /** Used to generate unique IDs. */
	    var idCounter = 0;

	    /** Used to detect methods masquerading as native. */
	    var maskSrcKey = (function() {
	      var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');
	      return uid ? ('Symbol(src)_1.' + uid) : '';
	    }());

	    /**
	     * Used to resolve the
	     * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
	     * of values.
	     */
	    var nativeObjectToString = objectProto.toString;

	    /** Used to infer the `Object` constructor. */
	    var objectCtorString = funcToString.call(Object);

	    /** Used to restore the original `_` reference in `_.noConflict`. */
	    var oldDash = root._;

	    /** Used to detect if a method is native. */
	    var reIsNative = RegExp('^' +
	      funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&')
	      .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
	    );

	    /** Built-in value references. */
	    var Buffer = moduleExports ? context.Buffer : undefined$1,
	        Symbol = context.Symbol,
	        Uint8Array = context.Uint8Array,
	        allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined$1,
	        getPrototype = overArg(Object.getPrototypeOf, Object),
	        objectCreate = Object.create,
	        propertyIsEnumerable = objectProto.propertyIsEnumerable,
	        splice = arrayProto.splice,
	        spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined$1,
	        symIterator = Symbol ? Symbol.iterator : undefined$1,
	        symToStringTag = Symbol ? Symbol.toStringTag : undefined$1;

	    var defineProperty = (function() {
	      try {
	        var func = getNative(Object, 'defineProperty');
	        func({}, '', {});
	        return func;
	      } catch (e) {}
	    }());

	    /** Mocked built-ins. */
	    var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout,
	        ctxNow = Date && Date.now !== root.Date.now && Date.now,
	        ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout;

	    /* Built-in method references for those with the same name as other `lodash` methods. */
	    var nativeCeil = Math.ceil,
	        nativeFloor = Math.floor,
	        nativeGetSymbols = Object.getOwnPropertySymbols,
	        nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined$1,
	        nativeIsFinite = context.isFinite,
	        nativeJoin = arrayProto.join,
	        nativeKeys = overArg(Object.keys, Object),
	        nativeMax = Math.max,
	        nativeMin = Math.min,
	        nativeNow = Date.now,
	        nativeParseInt = context.parseInt,
	        nativeRandom = Math.random,
	        nativeReverse = arrayProto.reverse;

	    /* Built-in method references that are verified to be native. */
	    var DataView = getNative(context, 'DataView'),
	        Map = getNative(context, 'Map'),
	        Promise = getNative(context, 'Promise'),
	        Set = getNative(context, 'Set'),
	        WeakMap = getNative(context, 'WeakMap'),
	        nativeCreate = getNative(Object, 'create');

	    /** Used to store function metadata. */
	    var metaMap = WeakMap && new WeakMap;

	    /** Used to lookup unminified function names. */
	    var realNames = {};

	    /** Used to detect maps, sets, and weakmaps. */
	    var dataViewCtorString = toSource(DataView),
	        mapCtorString = toSource(Map),
	        promiseCtorString = toSource(Promise),
	        setCtorString = toSource(Set),
	        weakMapCtorString = toSource(WeakMap);

	    /** Used to convert symbols to primitives and strings. */
	    var symbolProto = Symbol ? Symbol.prototype : undefined$1,
	        symbolValueOf = symbolProto ? symbolProto.valueOf : undefined$1,
	        symbolToString = symbolProto ? symbolProto.toString : undefined$1;

	    /*------------------------------------------------------------------------*/

	    /**
	     * Creates a `lodash` object which wraps `value` to enable implicit method
	     * chain sequences. Methods that operate on and return arrays, collections,
	     * and functions can be chained together. Methods that retrieve a single value
	     * or may return a primitive value will automatically end the chain sequence
	     * and return the unwrapped value. Otherwise, the value must be unwrapped
	     * with `_#value`.
	     *
	     * Explicit chain sequences, which must be unwrapped with `_#value`, may be
	     * enabled using `_.chain`.
	     *
	     * The execution of chained methods is lazy, that is, it's deferred until
	     * `_#value` is implicitly or explicitly called.
	     *
	     * Lazy evaluation allows several methods to support shortcut fusion.
	     * Shortcut fusion is an optimization to merge iteratee calls; this avoids
	     * the creation of intermediate arrays and can greatly reduce the number of
	     * iteratee executions. Sections of a chain sequence qualify for shortcut
	     * fusion if the section is applied to an array and iteratees accept only
	     * one argument. The heuristic for whether a section qualifies for shortcut
	     * fusion is subject to change.
	     *
	     * Chaining is supported in custom builds as long as the `_#value` method is
	     * directly or indirectly included in the build.
	     *
	     * In addition to lodash methods, wrappers have `Array` and `String` methods.
	     *
	     * The wrapper `Array` methods are:
	     * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`
	     *
	     * The wrapper `String` methods are:
	     * `replace` and `split`
	     *
	     * The wrapper methods that support shortcut fusion are:
	     * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,
	     * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,
	     * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`
	     *
	     * The chainable wrapper methods are:
	     * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,
	     * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,
	     * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,
	     * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,
	     * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,
	     * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,
	     * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,
	     * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,
	     * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,
	     * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,
	     * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,
	     * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,
	     * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,
	     * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,
	     * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,
	     * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,
	     * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,
	     * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,
	     * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,
	     * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,
	     * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,
	     * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,
	     * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,
	     * `zipObject`, `zipObjectDeep`, and `zipWith`
	     *
	     * The wrapper methods that are **not** chainable by default are:
	     * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,
	     * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,
	     * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,
	     * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,
	     * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,
	     * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,
	     * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,
	     * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,
	     * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,
	     * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,
	     * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,
	     * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,
	     * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,
	     * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,
	     * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,
	     * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,
	     * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,
	     * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,
	     * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,
	     * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,
	     * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,
	     * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,
	     * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,
	     * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,
	     * `upperFirst`, `value`, and `words`
	     *
	     * @name _
	     * @constructor
	     * @category Seq
	     * @param {*} value The value to wrap in a `lodash` instance.
	     * @returns {Object} Returns the new `lodash` wrapper instance.
	     * @example
	     *
	     * function square(n) {
	     *   return n * n;
	     * }
	     *
	     * var wrapped = _([1, 2, 3]);
	     *
	     * // Returns an unwrapped value.
	     * wrapped.reduce(_.add);
	     * // => 6
	     *
	     * // Returns a wrapped value.
	     * var squares = wrapped.map(square);
	     *
	     * _.isArray(squares);
	     * // => false
	     *
	     * _.isArray(squares.value());
	     * // => true
	     */
	    function lodash(value) {
	      if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {
	        if (value instanceof LodashWrapper) {
	          return value;
	        }
	        if (hasOwnProperty.call(value, '__wrapped__')) {
	          return wrapperClone(value);
	        }
	      }
	      return new LodashWrapper(value);
	    }

	    /**
	     * The base implementation of `_.create` without support for assigning
	     * properties to the created object.
	     *
	     * @private
	     * @param {Object} proto The object to inherit from.
	     * @returns {Object} Returns the new object.
	     */
	    var baseCreate = (function() {
	      function object() {}
	      return function(proto) {
	        if (!isObject(proto)) {
	          return {};
	        }
	        if (objectCreate) {
	          return objectCreate(proto);
	        }
	        object.prototype = proto;
	        var result = new object;
	        object.prototype = undefined$1;
	        return result;
	      };
	    }());

	    /**
	     * The function whose prototype chain sequence wrappers inherit from.
	     *
	     * @private
	     */
	    function baseLodash() {
	      // No operation performed.
	    }

	    /**
	     * The base constructor for creating `lodash` wrapper objects.
	     *
	     * @private
	     * @param {*} value The value to wrap.
	     * @param {boolean} [chainAll] Enable explicit method chain sequences.
	     */
	    function LodashWrapper(value, chainAll) {
	      this.__wrapped__ = value;
	      this.__actions__ = [];
	      this.__chain__ = !!chainAll;
	      this.__index__ = 0;
	      this.__values__ = undefined$1;
	    }

	    /**
	     * By default, the template delimiters used by lodash are like those in
	     * embedded Ruby (ERB) as well as ES2015 template strings. Change the
	     * following template settings to use alternative delimiters.
	     *
	     * @static
	     * @memberOf _
	     * @type {Object}
	     */
	    lodash.templateSettings = {

	      /**
	       * Used to detect `data` property values to be HTML-escaped.
	       *
	       * @memberOf _.templateSettings
	       * @type {RegExp}
	       */
	      'escape': reEscape,

	      /**
	       * Used to detect code to be evaluated.
	       *
	       * @memberOf _.templateSettings
	       * @type {RegExp}
	       */
	      'evaluate': reEvaluate,

	      /**
	       * Used to detect `data` property values to inject.
	       *
	       * @memberOf _.templateSettings
	       * @type {RegExp}
	       */
	      'interpolate': reInterpolate,

	      /**
	       * Used to reference the data object in the template text.
	       *
	       * @memberOf _.templateSettings
	       * @type {string}
	       */
	      'variable': '',

	      /**
	       * Used to import variables into the compiled template.
	       *
	       * @memberOf _.templateSettings
	       * @type {Object}
	       */
	      'imports': {

	        /**
	         * A reference to the `lodash` function.
	         *
	         * @memberOf _.templateSettings.imports
	         * @type {Function}
	         */
	        '_': lodash
	      }
	    };

	    // Ensure wrappers are instances of `baseLodash`.
	    lodash.prototype = baseLodash.prototype;
	    lodash.prototype.constructor = lodash;

	    LodashWrapper.prototype = baseCreate(baseLodash.prototype);
	    LodashWrapper.prototype.constructor = LodashWrapper;

	    /*------------------------------------------------------------------------*/

	    /**
	     * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.
	     *
	     * @private
	     * @constructor
	     * @param {*} value The value to wrap.
	     */
	    function LazyWrapper(value) {
	      this.__wrapped__ = value;
	      this.__actions__ = [];
	      this.__dir__ = 1;
	      this.__filtered__ = false;
	      this.__iteratees__ = [];
	      this.__takeCount__ = MAX_ARRAY_LENGTH;
	      this.__views__ = [];
	    }

	    /**
	     * Creates a clone of the lazy wrapper object.
	     *
	     * @private
	     * @name clone
	     * @memberOf LazyWrapper
	     * @returns {Object} Returns the cloned `LazyWrapper` object.
	     */
	    function lazyClone() {
	      var result = new LazyWrapper(this.__wrapped__);
	      result.__actions__ = copyArray(this.__actions__);
	      result.__dir__ = this.__dir__;
	      result.__filtered__ = this.__filtered__;
	      result.__iteratees__ = copyArray(this.__iteratees__);
	      result.__takeCount__ = this.__takeCount__;
	      result.__views__ = copyArray(this.__views__);
	      return result;
	    }

	    /**
	     * Reverses the direction of lazy iteration.
	     *
	     * @private
	     * @name reverse
	     * @memberOf LazyWrapper
	     * @returns {Object} Returns the new reversed `LazyWrapper` object.
	     */
	    function lazyReverse() {
	      if (this.__filtered__) {
	        var result = new LazyWrapper(this);
	        result.__dir__ = -1;
	        result.__filtered__ = true;
	      } else {
	        result = this.clone();
	        result.__dir__ *= -1;
	      }
	      return result;
	    }

	    /**
	     * Extracts the unwrapped value from its lazy wrapper.
	     *
	     * @private
	     * @name value
	     * @memberOf LazyWrapper
	     * @returns {*} Returns the unwrapped value.
	     */
	    function lazyValue() {
	      var array = this.__wrapped__.value(),
	          dir = this.__dir__,
	          isArr = isArray(array),
	          isRight = dir < 0,
	          arrLength = isArr ? array.length : 0,
	          view = getView(0, arrLength, this.__views__),
	          start = view.start,
	          end = view.end,
	          length = end - start,
	          index = isRight ? end : (start - 1),
	          iteratees = this.__iteratees__,
	          iterLength = iteratees.length,
	          resIndex = 0,
	          takeCount = nativeMin(length, this.__takeCount__);

	      if (!isArr || (!isRight && arrLength == length && takeCount == length)) {
	        return baseWrapperValue(array, this.__actions__);
	      }
	      var result = [];

	      outer:
	      while (length-- && resIndex < takeCount) {
	        index += dir;

	        var iterIndex = -1,
	            value = array[index];

	        while (++iterIndex < iterLength) {
	          var data = iteratees[iterIndex],
	              iteratee = data.iteratee,
	              type = data.type,
	              computed = iteratee(value);

	          if (type == LAZY_MAP_FLAG) {
	            value = computed;
	          } else if (!computed) {
	            if (type == LAZY_FILTER_FLAG) {
	              continue outer;
	            } else {
	              break outer;
	            }
	          }
	        }
	        result[resIndex++] = value;
	      }
	      return result;
	    }

	    // Ensure `LazyWrapper` is an instance of `baseLodash`.
	    LazyWrapper.prototype = baseCreate(baseLodash.prototype);
	    LazyWrapper.prototype.constructor = LazyWrapper;

	    /*------------------------------------------------------------------------*/

	    /**
	     * Creates a hash object.
	     *
	     * @private
	     * @constructor
	     * @param {Array} [entries] The key-value pairs to cache.
	     */
	    function Hash(entries) {
	      var index = -1,
	          length = entries == null ? 0 : entries.length;

	      this.clear();
	      while (++index < length) {
	        var entry = entries[index];
	        this.set(entry[0], entry[1]);
	      }
	    }

	    /**
	     * Removes all key-value entries from the hash.
	     *
	     * @private
	     * @name clear
	     * @memberOf Hash
	     */
	    function hashClear() {
	      this.__data__ = nativeCreate ? nativeCreate(null) : {};
	      this.size = 0;
	    }

	    /**
	     * Removes `key` and its value from the hash.
	     *
	     * @private
	     * @name delete
	     * @memberOf Hash
	     * @param {Object} hash The hash to modify.
	     * @param {string} key The key of the value to remove.
	     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
	     */
	    function hashDelete(key) {
	      var result = this.has(key) && delete this.__data__[key];
	      this.size -= result ? 1 : 0;
	      return result;
	    }

	    /**
	     * Gets the hash value for `key`.
	     *
	     * @private
	     * @name get
	     * @memberOf Hash
	     * @param {string} key The key of the value to get.
	     * @returns {*} Returns the entry value.
	     */
	    function hashGet(key) {
	      var data = this.__data__;
	      if (nativeCreate) {
	        var result = data[key];
	        return result === HASH_UNDEFINED ? undefined$1 : result;
	      }
	      return hasOwnProperty.call(data, key) ? data[key] : undefined$1;
	    }

	    /**
	     * Checks if a hash value for `key` exists.
	     *
	     * @private
	     * @name has
	     * @memberOf Hash
	     * @param {string} key The key of the entry to check.
	     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
	     */
	    function hashHas(key) {
	      var data = this.__data__;
	      return nativeCreate ? (data[key] !== undefined$1) : hasOwnProperty.call(data, key);
	    }

	    /**
	     * Sets the hash `key` to `value`.
	     *
	     * @private
	     * @name set
	     * @memberOf Hash
	     * @param {string} key The key of the value to set.
	     * @param {*} value The value to set.
	     * @returns {Object} Returns the hash instance.
	     */
	    function hashSet(key, value) {
	      var data = this.__data__;
	      this.size += this.has(key) ? 0 : 1;
	      data[key] = (nativeCreate && value === undefined$1) ? HASH_UNDEFINED : value;
	      return this;
	    }

	    // Add methods to `Hash`.
	    Hash.prototype.clear = hashClear;
	    Hash.prototype['delete'] = hashDelete;
	    Hash.prototype.get = hashGet;
	    Hash.prototype.has = hashHas;
	    Hash.prototype.set = hashSet;

	    /*------------------------------------------------------------------------*/

	    /**
	     * Creates an list cache object.
	     *
	     * @private
	     * @constructor
	     * @param {Array} [entries] The key-value pairs to cache.
	     */
	    function ListCache(entries) {
	      var index = -1,
	          length = entries == null ? 0 : entries.length;

	      this.clear();
	      while (++index < length) {
	        var entry = entries[index];
	        this.set(entry[0], entry[1]);
	      }
	    }

	    /**
	     * Removes all key-value entries from the list cache.
	     *
	     * @private
	     * @name clear
	     * @memberOf ListCache
	     */
	    function listCacheClear() {
	      this.__data__ = [];
	      this.size = 0;
	    }

	    /**
	     * Removes `key` and its value from the list cache.
	     *
	     * @private
	     * @name delete
	     * @memberOf ListCache
	     * @param {string} key The key of the value to remove.
	     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
	     */
	    function listCacheDelete(key) {
	      var data = this.__data__,
	          index = assocIndexOf(data, key);

	      if (index < 0) {
	        return false;
	      }
	      var lastIndex = data.length - 1;
	      if (index == lastIndex) {
	        data.pop();
	      } else {
	        splice.call(data, index, 1);
	      }
	      --this.size;
	      return true;
	    }

	    /**
	     * Gets the list cache value for `key`.
	     *
	     * @private
	     * @name get
	     * @memberOf ListCache
	     * @param {string} key The key of the value to get.
	     * @returns {*} Returns the entry value.
	     */
	    function listCacheGet(key) {
	      var data = this.__data__,
	          index = assocIndexOf(data, key);

	      return index < 0 ? undefined$1 : data[index][1];
	    }

	    /**
	     * Checks if a list cache value for `key` exists.
	     *
	     * @private
	     * @name has
	     * @memberOf ListCache
	     * @param {string} key The key of the entry to check.
	     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
	     */
	    function listCacheHas(key) {
	      return assocIndexOf(this.__data__, key) > -1;
	    }

	    /**
	     * Sets the list cache `key` to `value`.
	     *
	     * @private
	     * @name set
	     * @memberOf ListCache
	     * @param {string} key The key of the value to set.
	     * @param {*} value The value to set.
	     * @returns {Object} Returns the list cache instance.
	     */
	    function listCacheSet(key, value) {
	      var data = this.__data__,
	          index = assocIndexOf(data, key);

	      if (index < 0) {
	        ++this.size;
	        data.push([key, value]);
	      } else {
	        data[index][1] = value;
	      }
	      return this;
	    }

	    // Add methods to `ListCache`.
	    ListCache.prototype.clear = listCacheClear;
	    ListCache.prototype['delete'] = listCacheDelete;
	    ListCache.prototype.get = listCacheGet;
	    ListCache.prototype.has = listCacheHas;
	    ListCache.prototype.set = listCacheSet;

	    /*------------------------------------------------------------------------*/

	    /**
	     * Creates a map cache object to store key-value pairs.
	     *
	     * @private
	     * @constructor
	     * @param {Array} [entries] The key-value pairs to cache.
	     */
	    function MapCache(entries) {
	      var index = -1,
	          length = entries == null ? 0 : entries.length;

	      this.clear();
	      while (++index < length) {
	        var entry = entries[index];
	        this.set(entry[0], entry[1]);
	      }
	    }

	    /**
	     * Removes all key-value entries from the map.
	     *
	     * @private
	     * @name clear
	     * @memberOf MapCache
	     */
	    function mapCacheClear() {
	      this.size = 0;
	      this.__data__ = {
	        'hash': new Hash,
	        'map': new (Map || ListCache),
	        'string': new Hash
	      };
	    }

	    /**
	     * Removes `key` and its value from the map.
	     *
	     * @private
	     * @name delete
	     * @memberOf MapCache
	     * @param {string} key The key of the value to remove.
	     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
	     */
	    function mapCacheDelete(key) {
	      var result = getMapData(this, key)['delete'](key);
	      this.size -= result ? 1 : 0;
	      return result;
	    }

	    /**
	     * Gets the map value for `key`.
	     *
	     * @private
	     * @name get
	     * @memberOf MapCache
	     * @param {string} key The key of the value to get.
	     * @returns {*} Returns the entry value.
	     */
	    function mapCacheGet(key) {
	      return getMapData(this, key).get(key);
	    }

	    /**
	     * Checks if a map value for `key` exists.
	     *
	     * @private
	     * @name has
	     * @memberOf MapCache
	     * @param {string} key The key of the entry to check.
	     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
	     */
	    function mapCacheHas(key) {
	      return getMapData(this, key).has(key);
	    }

	    /**
	     * Sets the map `key` to `value`.
	     *
	     * @private
	     * @name set
	     * @memberOf MapCache
	     * @param {string} key The key of the value to set.
	     * @param {*} value The value to set.
	     * @returns {Object} Returns the map cache instance.
	     */
	    function mapCacheSet(key, value) {
	      var data = getMapData(this, key),
	          size = data.size;

	      data.set(key, value);
	      this.size += data.size == size ? 0 : 1;
	      return this;
	    }

	    // Add methods to `MapCache`.
	    MapCache.prototype.clear = mapCacheClear;
	    MapCache.prototype['delete'] = mapCacheDelete;
	    MapCache.prototype.get = mapCacheGet;
	    MapCache.prototype.has = mapCacheHas;
	    MapCache.prototype.set = mapCacheSet;

	    /*------------------------------------------------------------------------*/

	    /**
	     *
	     * Creates an array cache object to store unique values.
	     *
	     * @private
	     * @constructor
	     * @param {Array} [values] The values to cache.
	     */
	    function SetCache(values) {
	      var index = -1,
	          length = values == null ? 0 : values.length;

	      this.__data__ = new MapCache;
	      while (++index < length) {
	        this.add(values[index]);
	      }
	    }

	    /**
	     * Adds `value` to the array cache.
	     *
	     * @private
	     * @name add
	     * @memberOf SetCache
	     * @alias push
	     * @param {*} value The value to cache.
	     * @returns {Object} Returns the cache instance.
	     */
	    function setCacheAdd(value) {
	      this.__data__.set(value, HASH_UNDEFINED);
	      return this;
	    }

	    /**
	     * Checks if `value` is in the array cache.
	     *
	     * @private
	     * @name has
	     * @memberOf SetCache
	     * @param {*} value The value to search for.
	     * @returns {number} Returns `true` if `value` is found, else `false`.
	     */
	    function setCacheHas(value) {
	      return this.__data__.has(value);
	    }

	    // Add methods to `SetCache`.
	    SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;
	    SetCache.prototype.has = setCacheHas;

	    /*------------------------------------------------------------------------*/

	    /**
	     * Creates a stack cache object to store key-value pairs.
	     *
	     * @private
	     * @constructor
	     * @param {Array} [entries] The key-value pairs to cache.
	     */
	    function Stack(entries) {
	      var data = this.__data__ = new ListCache(entries);
	      this.size = data.size;
	    }

	    /**
	     * Removes all key-value entries from the stack.
	     *
	     * @private
	     * @name clear
	     * @memberOf Stack
	     */
	    function stackClear() {
	      this.__data__ = new ListCache;
	      this.size = 0;
	    }

	    /**
	     * Removes `key` and its value from the stack.
	     *
	     * @private
	     * @name delete
	     * @memberOf Stack
	     * @param {string} key The key of the value to remove.
	     * @returns {boolean} Returns `true` if the entry was removed, else `false`.
	     */
	    function stackDelete(key) {
	      var data = this.__data__,
	          result = data['delete'](key);

	      this.size = data.size;
	      return result;
	    }

	    /**
	     * Gets the stack value for `key`.
	     *
	     * @private
	     * @name get
	     * @memberOf Stack
	     * @param {string} key The key of the value to get.
	     * @returns {*} Returns the entry value.
	     */
	    function stackGet(key) {
	      return this.__data__.get(key);
	    }

	    /**
	     * Checks if a stack value for `key` exists.
	     *
	     * @private
	     * @name has
	     * @memberOf Stack
	     * @param {string} key The key of the entry to check.
	     * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
	     */
	    function stackHas(key) {
	      return this.__data__.has(key);
	    }

	    /**
	     * Sets the stack `key` to `value`.
	     *
	     * @private
	     * @name set
	     * @memberOf Stack
	     * @param {string} key The key of the value to set.
	     * @param {*} value The value to set.
	     * @returns {Object} Returns the stack cache instance.
	     */
	    function stackSet(key, value) {
	      var data = this.__data__;
	      if (data instanceof ListCache) {
	        var pairs = data.__data__;
	        if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {
	          pairs.push([key, value]);
	          this.size = ++data.size;
	          return this;
	        }
	        data = this.__data__ = new MapCache(pairs);
	      }
	      data.set(key, value);
	      this.size = data.size;
	      return this;
	    }

	    // Add methods to `Stack`.
	    Stack.prototype.clear = stackClear;
	    Stack.prototype['delete'] = stackDelete;
	    Stack.prototype.get = stackGet;
	    Stack.prototype.has = stackHas;
	    Stack.prototype.set = stackSet;

	    /*------------------------------------------------------------------------*/

	    /**
	     * Creates an array of the enumerable property names of the array-like `value`.
	     *
	     * @private
	     * @param {*} value The value to query.
	     * @param {boolean} inherited Specify returning inherited property names.
	     * @returns {Array} Returns the array of property names.
	     */
	    function arrayLikeKeys(value, inherited) {
	      var isArr = isArray(value),
	          isArg = !isArr && isArguments(value),
	          isBuff = !isArr && !isArg && isBuffer(value),
	          isType = !isArr && !isArg && !isBuff && isTypedArray(value),
	          skipIndexes = isArr || isArg || isBuff || isType,
	          result = skipIndexes ? baseTimes(value.length, String) : [],
	          length = result.length;

	      for (var key in value) {
	        if ((inherited || hasOwnProperty.call(value, key)) &&
	            !(skipIndexes && (
	               // Safari 9 has enumerable `arguments.length` in strict mode.
	               key == 'length' ||
	               // Node.js 0.10 has enumerable non-index properties on buffers.
	               (isBuff && (key == 'offset' || key == 'parent')) ||
	               // PhantomJS 2 has enumerable non-index properties on typed arrays.
	               (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||
	               // Skip index properties.
	               isIndex(key, length)
	            ))) {
	          result.push(key);
	        }
	      }
	      return result;
	    }

	    /**
	     * A specialized version of `_.sample` for arrays.
	     *
	     * @private
	     * @param {Array} array The array to sample.
	     * @returns {*} Returns the random element.
	     */
	    function arraySample(array) {
	      var length = array.length;
	      return length ? array[baseRandom(0, length - 1)] : undefined$1;
	    }

	    /**
	     * A specialized version of `_.sampleSize` for arrays.
	     *
	     * @private
	     * @param {Array} array The array to sample.
	     * @param {number} n The number of elements to sample.
	     * @returns {Array} Returns the random elements.
	     */
	    function arraySampleSize(array, n) {
	      return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));
	    }

	    /**
	     * A specialized version of `_.shuffle` for arrays.
	     *
	     * @private
	     * @param {Array} array The array to shuffle.
	     * @returns {Array} Returns the new shuffled array.
	     */
	    function arrayShuffle(array) {
	      return shuffleSelf(copyArray(array));
	    }

	    /**
	     * This function is like `assignValue` except that it doesn't assign
	     * `undefined` values.
	     *
	     * @private
	     * @param {Object} object The object to modify.
	     * @param {string} key The key of the property to assign.
	     * @param {*} value The value to assign.
	     */
	    function assignMergeValue(object, key, value) {
	      if ((value !== undefined$1 && !eq(object[key], value)) ||
	          (value === undefined$1 && !(key in object))) {
	        baseAssignValue(object, key, value);
	      }
	    }

	    /**
	     * Assigns `value` to `key` of `object` if the existing value is not equivalent
	     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
	     * for equality comparisons.
	     *
	     * @private
	     * @param {Object} object The object to modify.
	     * @param {string} key The key of the property to assign.
	     * @param {*} value The value to assign.
	     */
	    function assignValue(object, key, value) {
	      var objValue = object[key];
	      if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||
	          (value === undefined$1 && !(key in object))) {
	        baseAssignValue(object, key, value);
	      }
	    }

	    /**
	     * Gets the index at which the `key` is found in `array` of key-value pairs.
	     *
	     * @private
	     * @param {Array} array The array to inspect.
	     * @param {*} key The key to search for.
	     * @returns {number} Returns the index of the matched value, else `-1`.
	     */
	    function assocIndexOf(array, key) {
	      var length = array.length;
	      while (length--) {
	        if (eq(array[length][0], key)) {
	          return length;
	        }
	      }
	      return -1;
	    }

	    /**
	     * Aggregates elements of `collection` on `accumulator` with keys transformed
	     * by `iteratee` and values set by `setter`.
	     *
	     * @private
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} setter The function to set `accumulator` values.
	     * @param {Function} iteratee The iteratee to transform keys.
	     * @param {Object} accumulator The initial aggregated object.
	     * @returns {Function} Returns `accumulator`.
	     */
	    function baseAggregator(collection, setter, iteratee, accumulator) {
	      baseEach(collection, function(value, key, collection) {
	        setter(accumulator, value, iteratee(value), collection);
	      });
	      return accumulator;
	    }

	    /**
	     * The base implementation of `_.assign` without support for multiple sources
	     * or `customizer` functions.
	     *
	     * @private
	     * @param {Object} object The destination object.
	     * @param {Object} source The source object.
	     * @returns {Object} Returns `object`.
	     */
	    function baseAssign(object, source) {
	      return object && copyObject(source, keys(source), object);
	    }

	    /**
	     * The base implementation of `_.assignIn` without support for multiple sources
	     * or `customizer` functions.
	     *
	     * @private
	     * @param {Object} object The destination object.
	     * @param {Object} source The source object.
	     * @returns {Object} Returns `object`.
	     */
	    function baseAssignIn(object, source) {
	      return object && copyObject(source, keysIn(source), object);
	    }

	    /**
	     * The base implementation of `assignValue` and `assignMergeValue` without
	     * value checks.
	     *
	     * @private
	     * @param {Object} object The object to modify.
	     * @param {string} key The key of the property to assign.
	     * @param {*} value The value to assign.
	     */
	    function baseAssignValue(object, key, value) {
	      if (key == '__proto__' && defineProperty) {
	        defineProperty(object, key, {
	          'configurable': true,
	          'enumerable': true,
	          'value': value,
	          'writable': true
	        });
	      } else {
	        object[key] = value;
	      }
	    }

	    /**
	     * The base implementation of `_.at` without support for individual paths.
	     *
	     * @private
	     * @param {Object} object The object to iterate over.
	     * @param {string[]} paths The property paths to pick.
	     * @returns {Array} Returns the picked elements.
	     */
	    function baseAt(object, paths) {
	      var index = -1,
	          length = paths.length,
	          result = Array(length),
	          skip = object == null;

	      while (++index < length) {
	        result[index] = skip ? undefined$1 : get(object, paths[index]);
	      }
	      return result;
	    }

	    /**
	     * The base implementation of `_.clamp` which doesn't coerce arguments.
	     *
	     * @private
	     * @param {number} number The number to clamp.
	     * @param {number} [lower] The lower bound.
	     * @param {number} upper The upper bound.
	     * @returns {number} Returns the clamped number.
	     */
	    function baseClamp(number, lower, upper) {
	      if (number === number) {
	        if (upper !== undefined$1) {
	          number = number <= upper ? number : upper;
	        }
	        if (lower !== undefined$1) {
	          number = number >= lower ? number : lower;
	        }
	      }
	      return number;
	    }

	    /**
	     * The base implementation of `_.clone` and `_.cloneDeep` which tracks
	     * traversed objects.
	     *
	     * @private
	     * @param {*} value The value to clone.
	     * @param {boolean} bitmask The bitmask flags.
	     *  1 - Deep clone
	     *  2 - Flatten inherited properties
	     *  4 - Clone symbols
	     * @param {Function} [customizer] The function to customize cloning.
	     * @param {string} [key] The key of `value`.
	     * @param {Object} [object] The parent object of `value`.
	     * @param {Object} [stack] Tracks traversed objects and their clone counterparts.
	     * @returns {*} Returns the cloned value.
	     */
	    function baseClone(value, bitmask, customizer, key, object, stack) {
	      var result,
	          isDeep = bitmask & CLONE_DEEP_FLAG,
	          isFlat = bitmask & CLONE_FLAT_FLAG,
	          isFull = bitmask & CLONE_SYMBOLS_FLAG;

	      if (customizer) {
	        result = object ? customizer(value, key, object, stack) : customizer(value);
	      }
	      if (result !== undefined$1) {
	        return result;
	      }
	      if (!isObject(value)) {
	        return value;
	      }
	      var isArr = isArray(value);
	      if (isArr) {
	        result = initCloneArray(value);
	        if (!isDeep) {
	          return copyArray(value, result);
	        }
	      } else {
	        var tag = getTag(value),
	            isFunc = tag == funcTag || tag == genTag;

	        if (isBuffer(value)) {
	          return cloneBuffer(value, isDeep);
	        }
	        if (tag == objectTag || tag == argsTag || (isFunc && !object)) {
	          result = (isFlat || isFunc) ? {} : initCloneObject(value);
	          if (!isDeep) {
	            return isFlat
	              ? copySymbolsIn(value, baseAssignIn(result, value))
	              : copySymbols(value, baseAssign(result, value));
	          }
	        } else {
	          if (!cloneableTags[tag]) {
	            return object ? value : {};
	          }
	          result = initCloneByTag(value, tag, isDeep);
	        }
	      }
	      // Check for circular references and return its corresponding clone.
	      stack || (stack = new Stack);
	      var stacked = stack.get(value);
	      if (stacked) {
	        return stacked;
	      }
	      stack.set(value, result);

	      if (isSet(value)) {
	        value.forEach(function(subValue) {
	          result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));
	        });

	        return result;
	      }

	      if (isMap(value)) {
	        value.forEach(function(subValue, key) {
	          result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));
	        });

	        return result;
	      }

	      var keysFunc = isFull
	        ? (isFlat ? getAllKeysIn : getAllKeys)
	        : (isFlat ? keysIn : keys);

	      var props = isArr ? undefined$1 : keysFunc(value);
	      arrayEach(props || value, function(subValue, key) {
	        if (props) {
	          key = subValue;
	          subValue = value[key];
	        }
	        // Recursively populate clone (susceptible to call stack limits).
	        assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));
	      });
	      return result;
	    }

	    /**
	     * The base implementation of `_.conforms` which doesn't clone `source`.
	     *
	     * @private
	     * @param {Object} source The object of property predicates to conform to.
	     * @returns {Function} Returns the new spec function.
	     */
	    function baseConforms(source) {
	      var props = keys(source);
	      return function(object) {
	        return baseConformsTo(object, source, props);
	      };
	    }

	    /**
	     * The base implementation of `_.conformsTo` which accepts `props` to check.
	     *
	     * @private
	     * @param {Object} object The object to inspect.
	     * @param {Object} source The object of property predicates to conform to.
	     * @returns {boolean} Returns `true` if `object` conforms, else `false`.
	     */
	    function baseConformsTo(object, source, props) {
	      var length = props.length;
	      if (object == null) {
	        return !length;
	      }
	      object = Object(object);
	      while (length--) {
	        var key = props[length],
	            predicate = source[key],
	            value = object[key];

	        if ((value === undefined$1 && !(key in object)) || !predicate(value)) {
	          return false;
	        }
	      }
	      return true;
	    }

	    /**
	     * The base implementation of `_.delay` and `_.defer` which accepts `args`
	     * to provide to `func`.
	     *
	     * @private
	     * @param {Function} func The function to delay.
	     * @param {number} wait The number of milliseconds to delay invocation.
	     * @param {Array} args The arguments to provide to `func`.
	     * @returns {number|Object} Returns the timer id or timeout object.
	     */
	    function baseDelay(func, wait, args) {
	      if (typeof func != 'function') {
	        throw new TypeError(FUNC_ERROR_TEXT);
	      }
	      return setTimeout(function() { func.apply(undefined$1, args); }, wait);
	    }

	    /**
	     * The base implementation of methods like `_.difference` without support
	     * for excluding multiple arrays or iteratee shorthands.
	     *
	     * @private
	     * @param {Array} array The array to inspect.
	     * @param {Array} values The values to exclude.
	     * @param {Function} [iteratee] The iteratee invoked per element.
	     * @param {Function} [comparator] The comparator invoked per element.
	     * @returns {Array} Returns the new array of filtered values.
	     */
	    function baseDifference(array, values, iteratee, comparator) {
	      var index = -1,
	          includes = arrayIncludes,
	          isCommon = true,
	          length = array.length,
	          result = [],
	          valuesLength = values.length;

	      if (!length) {
	        return result;
	      }
	      if (iteratee) {
	        values = arrayMap(values, baseUnary(iteratee));
	      }
	      if (comparator) {
	        includes = arrayIncludesWith;
	        isCommon = false;
	      }
	      else if (values.length >= LARGE_ARRAY_SIZE) {
	        includes = cacheHas;
	        isCommon = false;
	        values = new SetCache(values);
	      }
	      outer:
	      while (++index < length) {
	        var value = array[index],
	            computed = iteratee == null ? value : iteratee(value);

	        value = (comparator || value !== 0) ? value : 0;
	        if (isCommon && computed === computed) {
	          var valuesIndex = valuesLength;
	          while (valuesIndex--) {
	            if (values[valuesIndex] === computed) {
	              continue outer;
	            }
	          }
	          result.push(value);
	        }
	        else if (!includes(values, computed, comparator)) {
	          result.push(value);
	        }
	      }
	      return result;
	    }

	    /**
	     * The base implementation of `_.forEach` without support for iteratee shorthands.
	     *
	     * @private
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} iteratee The function invoked per iteration.
	     * @returns {Array|Object} Returns `collection`.
	     */
	    var baseEach = createBaseEach(baseForOwn);

	    /**
	     * The base implementation of `_.forEachRight` without support for iteratee shorthands.
	     *
	     * @private
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} iteratee The function invoked per iteration.
	     * @returns {Array|Object} Returns `collection`.
	     */
	    var baseEachRight = createBaseEach(baseForOwnRight, true);

	    /**
	     * The base implementation of `_.every` without support for iteratee shorthands.
	     *
	     * @private
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} predicate The function invoked per iteration.
	     * @returns {boolean} Returns `true` if all elements pass the predicate check,
	     *  else `false`
	     */
	    function baseEvery(collection, predicate) {
	      var result = true;
	      baseEach(collection, function(value, index, collection) {
	        result = !!predicate(value, index, collection);
	        return result;
	      });
	      return result;
	    }

	    /**
	     * The base implementation of methods like `_.max` and `_.min` which accepts a
	     * `comparator` to determine the extremum value.
	     *
	     * @private
	     * @param {Array} array The array to iterate over.
	     * @param {Function} iteratee The iteratee invoked per iteration.
	     * @param {Function} comparator The comparator used to compare values.
	     * @returns {*} Returns the extremum value.
	     */
	    function baseExtremum(array, iteratee, comparator) {
	      var index = -1,
	          length = array.length;

	      while (++index < length) {
	        var value = array[index],
	            current = iteratee(value);

	        if (current != null && (computed === undefined$1
	              ? (current === current && !isSymbol(current))
	              : comparator(current, computed)
	            )) {
	          var computed = current,
	              result = value;
	        }
	      }
	      return result;
	    }

	    /**
	     * The base implementation of `_.fill` without an iteratee call guard.
	     *
	     * @private
	     * @param {Array} array The array to fill.
	     * @param {*} value The value to fill `array` with.
	     * @param {number} [start=0] The start position.
	     * @param {number} [end=array.length] The end position.
	     * @returns {Array} Returns `array`.
	     */
	    function baseFill(array, value, start, end) {
	      var length = array.length;

	      start = toInteger(start);
	      if (start < 0) {
	        start = -start > length ? 0 : (length + start);
	      }
	      end = (end === undefined$1 || end > length) ? length : toInteger(end);
	      if (end < 0) {
	        end += length;
	      }
	      end = start > end ? 0 : toLength(end);
	      while (start < end) {
	        array[start++] = value;
	      }
	      return array;
	    }

	    /**
	     * The base implementation of `_.filter` without support for iteratee shorthands.
	     *
	     * @private
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} predicate The function invoked per iteration.
	     * @returns {Array} Returns the new filtered array.
	     */
	    function baseFilter(collection, predicate) {
	      var result = [];
	      baseEach(collection, function(value, index, collection) {
	        if (predicate(value, index, collection)) {
	          result.push(value);
	        }
	      });
	      return result;
	    }

	    /**
	     * The base implementation of `_.flatten` with support for restricting flattening.
	     *
	     * @private
	     * @param {Array} array The array to flatten.
	     * @param {number} depth The maximum recursion depth.
	     * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.
	     * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.
	     * @param {Array} [result=[]] The initial result value.
	     * @returns {Array} Returns the new flattened array.
	     */
	    function baseFlatten(array, depth, predicate, isStrict, result) {
	      var index = -1,
	          length = array.length;

	      predicate || (predicate = isFlattenable);
	      result || (result = []);

	      while (++index < length) {
	        var value = array[index];
	        if (depth > 0 && predicate(value)) {
	          if (depth > 1) {
	            // Recursively flatten arrays (susceptible to call stack limits).
	            baseFlatten(value, depth - 1, predicate, isStrict, result);
	          } else {
	            arrayPush(result, value);
	          }
	        } else if (!isStrict) {
	          result[result.length] = value;
	        }
	      }
	      return result;
	    }

	    /**
	     * The base implementation of `baseForOwn` which iterates over `object`
	     * properties returned by `keysFunc` and invokes `iteratee` for each property.
	     * Iteratee functions may exit iteration early by explicitly returning `false`.
	     *
	     * @private
	     * @param {Object} object The object to iterate over.
	     * @param {Function} iteratee The function invoked per iteration.
	     * @param {Function} keysFunc The function to get the keys of `object`.
	     * @returns {Object} Returns `object`.
	     */
	    var baseFor = createBaseFor();

	    /**
	     * This function is like `baseFor` except that it iterates over properties
	     * in the opposite order.
	     *
	     * @private
	     * @param {Object} object The object to iterate over.
	     * @param {Function} iteratee The function invoked per iteration.
	     * @param {Function} keysFunc The function to get the keys of `object`.
	     * @returns {Object} Returns `object`.
	     */
	    var baseForRight = createBaseFor(true);

	    /**
	     * The base implementation of `_.forOwn` without support for iteratee shorthands.
	     *
	     * @private
	     * @param {Object} object The object to iterate over.
	     * @param {Function} iteratee The function invoked per iteration.
	     * @returns {Object} Returns `object`.
	     */
	    function baseForOwn(object, iteratee) {
	      return object && baseFor(object, iteratee, keys);
	    }

	    /**
	     * The base implementation of `_.forOwnRight` without support for iteratee shorthands.
	     *
	     * @private
	     * @param {Object} object The object to iterate over.
	     * @param {Function} iteratee The function invoked per iteration.
	     * @returns {Object} Returns `object`.
	     */
	    function baseForOwnRight(object, iteratee) {
	      return object && baseForRight(object, iteratee, keys);
	    }

	    /**
	     * The base implementation of `_.functions` which creates an array of
	     * `object` function property names filtered from `props`.
	     *
	     * @private
	     * @param {Object} object The object to inspect.
	     * @param {Array} props The property names to filter.
	     * @returns {Array} Returns the function names.
	     */
	    function baseFunctions(object, props) {
	      return arrayFilter(props, function(key) {
	        return isFunction(object[key]);
	      });
	    }

	    /**
	     * The base implementation of `_.get` without support for default values.
	     *
	     * @private
	     * @param {Object} object The object to query.
	     * @param {Array|string} path The path of the property to get.
	     * @returns {*} Returns the resolved value.
	     */
	    function baseGet(object, path) {
	      path = castPath(path, object);

	      var index = 0,
	          length = path.length;

	      while (object != null && index < length) {
	        object = object[toKey(path[index++])];
	      }
	      return (index && index == length) ? object : undefined$1;
	    }

	    /**
	     * The base implementation of `getAllKeys` and `getAllKeysIn` which uses
	     * `keysFunc` and `symbolsFunc` to get the enumerable property names and
	     * symbols of `object`.
	     *
	     * @private
	     * @param {Object} object The object to query.
	     * @param {Function} keysFunc The function to get the keys of `object`.
	     * @param {Function} symbolsFunc The function to get the symbols of `object`.
	     * @returns {Array} Returns the array of property names and symbols.
	     */
	    function baseGetAllKeys(object, keysFunc, symbolsFunc) {
	      var result = keysFunc(object);
	      return isArray(object) ? result : arrayPush(result, symbolsFunc(object));
	    }

	    /**
	     * The base implementation of `getTag` without fallbacks for buggy environments.
	     *
	     * @private
	     * @param {*} value The value to query.
	     * @returns {string} Returns the `toStringTag`.
	     */
	    function baseGetTag(value) {
	      if (value == null) {
	        return value === undefined$1 ? undefinedTag : nullTag;
	      }
	      return (symToStringTag && symToStringTag in Object(value))
	        ? getRawTag(value)
	        : objectToString(value);
	    }

	    /**
	     * The base implementation of `_.gt` which doesn't coerce arguments.
	     *
	     * @private
	     * @param {*} value The value to compare.
	     * @param {*} other The other value to compare.
	     * @returns {boolean} Returns `true` if `value` is greater than `other`,
	     *  else `false`.
	     */
	    function baseGt(value, other) {
	      return value > other;
	    }

	    /**
	     * The base implementation of `_.has` without support for deep paths.
	     *
	     * @private
	     * @param {Object} [object] The object to query.
	     * @param {Array|string} key The key to check.
	     * @returns {boolean} Returns `true` if `key` exists, else `false`.
	     */
	    function baseHas(object, key) {
	      return object != null && hasOwnProperty.call(object, key);
	    }

	    /**
	     * The base implementation of `_.hasIn` without support for deep paths.
	     *
	     * @private
	     * @param {Object} [object] The object to query.
	     * @param {Array|string} key The key to check.
	     * @returns {boolean} Returns `true` if `key` exists, else `false`.
	     */
	    function baseHasIn(object, key) {
	      return object != null && key in Object(object);
	    }

	    /**
	     * The base implementation of `_.inRange` which doesn't coerce arguments.
	     *
	     * @private
	     * @param {number} number The number to check.
	     * @param {number} start The start of the range.
	     * @param {number} end The end of the range.
	     * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
	     */
	    function baseInRange(number, start, end) {
	      return number >= nativeMin(start, end) && number < nativeMax(start, end);
	    }

	    /**
	     * The base implementation of methods like `_.intersection`, without support
	     * for iteratee shorthands, that accepts an array of arrays to inspect.
	     *
	     * @private
	     * @param {Array} arrays The arrays to inspect.
	     * @param {Function} [iteratee] The iteratee invoked per element.
	     * @param {Function} [comparator] The comparator invoked per element.
	     * @returns {Array} Returns the new array of shared values.
	     */
	    function baseIntersection(arrays, iteratee, comparator) {
	      var includes = comparator ? arrayIncludesWith : arrayIncludes,
	          length = arrays[0].length,
	          othLength = arrays.length,
	          othIndex = othLength,
	          caches = Array(othLength),
	          maxLength = Infinity,
	          result = [];

	      while (othIndex--) {
	        var array = arrays[othIndex];
	        if (othIndex && iteratee) {
	          array = arrayMap(array, baseUnary(iteratee));
	        }
	        maxLength = nativeMin(array.length, maxLength);
	        caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120))
	          ? new SetCache(othIndex && array)
	          : undefined$1;
	      }
	      array = arrays[0];

	      var index = -1,
	          seen = caches[0];

	      outer:
	      while (++index < length && result.length < maxLength) {
	        var value = array[index],
	            computed = iteratee ? iteratee(value) : value;

	        value = (comparator || value !== 0) ? value : 0;
	        if (!(seen
	              ? cacheHas(seen, computed)
	              : includes(result, computed, comparator)
	            )) {
	          othIndex = othLength;
	          while (--othIndex) {
	            var cache = caches[othIndex];
	            if (!(cache
	                  ? cacheHas(cache, computed)
	                  : includes(arrays[othIndex], computed, comparator))
	                ) {
	              continue outer;
	            }
	          }
	          if (seen) {
	            seen.push(computed);
	          }
	          result.push(value);
	        }
	      }
	      return result;
	    }

	    /**
	     * The base implementation of `_.invert` and `_.invertBy` which inverts
	     * `object` with values transformed by `iteratee` and set by `setter`.
	     *
	     * @private
	     * @param {Object} object The object to iterate over.
	     * @param {Function} setter The function to set `accumulator` values.
	     * @param {Function} iteratee The iteratee to transform values.
	     * @param {Object} accumulator The initial inverted object.
	     * @returns {Function} Returns `accumulator`.
	     */
	    function baseInverter(object, setter, iteratee, accumulator) {
	      baseForOwn(object, function(value, key, object) {
	        setter(accumulator, iteratee(value), key, object);
	      });
	      return accumulator;
	    }

	    /**
	     * The base implementation of `_.invoke` without support for individual
	     * method arguments.
	     *
	     * @private
	     * @param {Object} object The object to query.
	     * @param {Array|string} path The path of the method to invoke.
	     * @param {Array} args The arguments to invoke the method with.
	     * @returns {*} Returns the result of the invoked method.
	     */
	    function baseInvoke(object, path, args) {
	      path = castPath(path, object);
	      object = parent(object, path);
	      var func = object == null ? object : object[toKey(last(path))];
	      return func == null ? undefined$1 : apply(func, object, args);
	    }

	    /**
	     * The base implementation of `_.isArguments`.
	     *
	     * @private
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is an `arguments` object,
	     */
	    function baseIsArguments(value) {
	      return isObjectLike(value) && baseGetTag(value) == argsTag;
	    }

	    /**
	     * The base implementation of `_.isArrayBuffer` without Node.js optimizations.
	     *
	     * @private
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
	     */
	    function baseIsArrayBuffer(value) {
	      return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;
	    }

	    /**
	     * The base implementation of `_.isDate` without Node.js optimizations.
	     *
	     * @private
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
	     */
	    function baseIsDate(value) {
	      return isObjectLike(value) && baseGetTag(value) == dateTag;
	    }

	    /**
	     * The base implementation of `_.isEqual` which supports partial comparisons
	     * and tracks traversed objects.
	     *
	     * @private
	     * @param {*} value The value to compare.
	     * @param {*} other The other value to compare.
	     * @param {boolean} bitmask The bitmask flags.
	     *  1 - Unordered comparison
	     *  2 - Partial comparison
	     * @param {Function} [customizer] The function to customize comparisons.
	     * @param {Object} [stack] Tracks traversed `value` and `other` objects.
	     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
	     */
	    function baseIsEqual(value, other, bitmask, customizer, stack) {
	      if (value === other) {
	        return true;
	      }
	      if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {
	        return value !== value && other !== other;
	      }
	      return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);
	    }

	    /**
	     * A specialized version of `baseIsEqual` for arrays and objects which performs
	     * deep comparisons and tracks traversed objects enabling objects with circular
	     * references to be compared.
	     *
	     * @private
	     * @param {Object} object The object to compare.
	     * @param {Object} other The other object to compare.
	     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
	     * @param {Function} customizer The function to customize comparisons.
	     * @param {Function} equalFunc The function to determine equivalents of values.
	     * @param {Object} [stack] Tracks traversed `object` and `other` objects.
	     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
	     */
	    function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {
	      var objIsArr = isArray(object),
	          othIsArr = isArray(other),
	          objTag = objIsArr ? arrayTag : getTag(object),
	          othTag = othIsArr ? arrayTag : getTag(other);

	      objTag = objTag == argsTag ? objectTag : objTag;
	      othTag = othTag == argsTag ? objectTag : othTag;

	      var objIsObj = objTag == objectTag,
	          othIsObj = othTag == objectTag,
	          isSameTag = objTag == othTag;

	      if (isSameTag && isBuffer(object)) {
	        if (!isBuffer(other)) {
	          return false;
	        }
	        objIsArr = true;
	        objIsObj = false;
	      }
	      if (isSameTag && !objIsObj) {
	        stack || (stack = new Stack);
	        return (objIsArr || isTypedArray(object))
	          ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)
	          : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);
	      }
	      if (!(bitmask & COMPARE_PARTIAL_FLAG)) {
	        var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
	            othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');

	        if (objIsWrapped || othIsWrapped) {
	          var objUnwrapped = objIsWrapped ? object.value() : object,
	              othUnwrapped = othIsWrapped ? other.value() : other;

	          stack || (stack = new Stack);
	          return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);
	        }
	      }
	      if (!isSameTag) {
	        return false;
	      }
	      stack || (stack = new Stack);
	      return equalObjects(object, other, bitmask, customizer, equalFunc, stack);
	    }

	    /**
	     * The base implementation of `_.isMap` without Node.js optimizations.
	     *
	     * @private
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a map, else `false`.
	     */
	    function baseIsMap(value) {
	      return isObjectLike(value) && getTag(value) == mapTag;
	    }

	    /**
	     * The base implementation of `_.isMatch` without support for iteratee shorthands.
	     *
	     * @private
	     * @param {Object} object The object to inspect.
	     * @param {Object} source The object of property values to match.
	     * @param {Array} matchData The property names, values, and compare flags to match.
	     * @param {Function} [customizer] The function to customize comparisons.
	     * @returns {boolean} Returns `true` if `object` is a match, else `false`.
	     */
	    function baseIsMatch(object, source, matchData, customizer) {
	      var index = matchData.length,
	          length = index,
	          noCustomizer = !customizer;

	      if (object == null) {
	        return !length;
	      }
	      object = Object(object);
	      while (index--) {
	        var data = matchData[index];
	        if ((noCustomizer && data[2])
	              ? data[1] !== object[data[0]]
	              : !(data[0] in object)
	            ) {
	          return false;
	        }
	      }
	      while (++index < length) {
	        data = matchData[index];
	        var key = data[0],
	            objValue = object[key],
	            srcValue = data[1];

	        if (noCustomizer && data[2]) {
	          if (objValue === undefined$1 && !(key in object)) {
	            return false;
	          }
	        } else {
	          var stack = new Stack;
	          if (customizer) {
	            var result = customizer(objValue, srcValue, key, object, source, stack);
	          }
	          if (!(result === undefined$1
	                ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)
	                : result
	              )) {
	            return false;
	          }
	        }
	      }
	      return true;
	    }

	    /**
	     * The base implementation of `_.isNative` without bad shim checks.
	     *
	     * @private
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a native function,
	     *  else `false`.
	     */
	    function baseIsNative(value) {
	      if (!isObject(value) || isMasked(value)) {
	        return false;
	      }
	      var pattern = isFunction(value) ? reIsNative : reIsHostCtor;
	      return pattern.test(toSource(value));
	    }

	    /**
	     * The base implementation of `_.isRegExp` without Node.js optimizations.
	     *
	     * @private
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
	     */
	    function baseIsRegExp(value) {
	      return isObjectLike(value) && baseGetTag(value) == regexpTag;
	    }

	    /**
	     * The base implementation of `_.isSet` without Node.js optimizations.
	     *
	     * @private
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a set, else `false`.
	     */
	    function baseIsSet(value) {
	      return isObjectLike(value) && getTag(value) == setTag;
	    }

	    /**
	     * The base implementation of `_.isTypedArray` without Node.js optimizations.
	     *
	     * @private
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
	     */
	    function baseIsTypedArray(value) {
	      return isObjectLike(value) &&
	        isLength(value.length) && !!typedArrayTags[baseGetTag(value)];
	    }

	    /**
	     * The base implementation of `_.iteratee`.
	     *
	     * @private
	     * @param {*} [value=_.identity] The value to convert to an iteratee.
	     * @returns {Function} Returns the iteratee.
	     */
	    function baseIteratee(value) {
	      // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.
	      // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.
	      if (typeof value == 'function') {
	        return value;
	      }
	      if (value == null) {
	        return identity;
	      }
	      if (typeof value == 'object') {
	        return isArray(value)
	          ? baseMatchesProperty(value[0], value[1])
	          : baseMatches(value);
	      }
	      return property(value);
	    }

	    /**
	     * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.
	     *
	     * @private
	     * @param {Object} object The object to query.
	     * @returns {Array} Returns the array of property names.
	     */
	    function baseKeys(object) {
	      if (!isPrototype(object)) {
	        return nativeKeys(object);
	      }
	      var result = [];
	      for (var key in Object(object)) {
	        if (hasOwnProperty.call(object, key) && key != 'constructor') {
	          result.push(key);
	        }
	      }
	      return result;
	    }

	    /**
	     * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.
	     *
	     * @private
	     * @param {Object} object The object to query.
	     * @returns {Array} Returns the array of property names.
	     */
	    function baseKeysIn(object) {
	      if (!isObject(object)) {
	        return nativeKeysIn(object);
	      }
	      var isProto = isPrototype(object),
	          result = [];

	      for (var key in object) {
	        if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {
	          result.push(key);
	        }
	      }
	      return result;
	    }

	    /**
	     * The base implementation of `_.lt` which doesn't coerce arguments.
	     *
	     * @private
	     * @param {*} value The value to compare.
	     * @param {*} other The other value to compare.
	     * @returns {boolean} Returns `true` if `value` is less than `other`,
	     *  else `false`.
	     */
	    function baseLt(value, other) {
	      return value < other;
	    }

	    /**
	     * The base implementation of `_.map` without support for iteratee shorthands.
	     *
	     * @private
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} iteratee The function invoked per iteration.
	     * @returns {Array} Returns the new mapped array.
	     */
	    function baseMap(collection, iteratee) {
	      var index = -1,
	          result = isArrayLike(collection) ? Array(collection.length) : [];

	      baseEach(collection, function(value, key, collection) {
	        result[++index] = iteratee(value, key, collection);
	      });
	      return result;
	    }

	    /**
	     * The base implementation of `_.matches` which doesn't clone `source`.
	     *
	     * @private
	     * @param {Object} source The object of property values to match.
	     * @returns {Function} Returns the new spec function.
	     */
	    function baseMatches(source) {
	      var matchData = getMatchData(source);
	      if (matchData.length == 1 && matchData[0][2]) {
	        return matchesStrictComparable(matchData[0][0], matchData[0][1]);
	      }
	      return function(object) {
	        return object === source || baseIsMatch(object, source, matchData);
	      };
	    }

	    /**
	     * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.
	     *
	     * @private
	     * @param {string} path The path of the property to get.
	     * @param {*} srcValue The value to match.
	     * @returns {Function} Returns the new spec function.
	     */
	    function baseMatchesProperty(path, srcValue) {
	      if (isKey(path) && isStrictComparable(srcValue)) {
	        return matchesStrictComparable(toKey(path), srcValue);
	      }
	      return function(object) {
	        var objValue = get(object, path);
	        return (objValue === undefined$1 && objValue === srcValue)
	          ? hasIn(object, path)
	          : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);
	      };
	    }

	    /**
	     * The base implementation of `_.merge` without support for multiple sources.
	     *
	     * @private
	     * @param {Object} object The destination object.
	     * @param {Object} source The source object.
	     * @param {number} srcIndex The index of `source`.
	     * @param {Function} [customizer] The function to customize merged values.
	     * @param {Object} [stack] Tracks traversed source values and their merged
	     *  counterparts.
	     */
	    function baseMerge(object, source, srcIndex, customizer, stack) {
	      if (object === source) {
	        return;
	      }
	      baseFor(source, function(srcValue, key) {
	        if (isObject(srcValue)) {
	          stack || (stack = new Stack);
	          baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);
	        }
	        else {
	          var newValue = customizer
	            ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack)
	            : undefined$1;

	          if (newValue === undefined$1) {
	            newValue = srcValue;
	          }
	          assignMergeValue(object, key, newValue);
	        }
	      }, keysIn);
	    }

	    /**
	     * A specialized version of `baseMerge` for arrays and objects which performs
	     * deep merges and tracks traversed objects enabling objects with circular
	     * references to be merged.
	     *
	     * @private
	     * @param {Object} object The destination object.
	     * @param {Object} source The source object.
	     * @param {string} key The key of the value to merge.
	     * @param {number} srcIndex The index of `source`.
	     * @param {Function} mergeFunc The function to merge values.
	     * @param {Function} [customizer] The function to customize assigned values.
	     * @param {Object} [stack] Tracks traversed source values and their merged
	     *  counterparts.
	     */
	    function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {
	      var objValue = safeGet(object, key),
	          srcValue = safeGet(source, key),
	          stacked = stack.get(srcValue);

	      if (stacked) {
	        assignMergeValue(object, key, stacked);
	        return;
	      }
	      var newValue = customizer
	        ? customizer(objValue, srcValue, (key + ''), object, source, stack)
	        : undefined$1;

	      var isCommon = newValue === undefined$1;

	      if (isCommon) {
	        var isArr = isArray(srcValue),
	            isBuff = !isArr && isBuffer(srcValue),
	            isTyped = !isArr && !isBuff && isTypedArray(srcValue);

	        newValue = srcValue;
	        if (isArr || isBuff || isTyped) {
	          if (isArray(objValue)) {
	            newValue = objValue;
	          }
	          else if (isArrayLikeObject(objValue)) {
	            newValue = copyArray(objValue);
	          }
	          else if (isBuff) {
	            isCommon = false;
	            newValue = cloneBuffer(srcValue, true);
	          }
	          else if (isTyped) {
	            isCommon = false;
	            newValue = cloneTypedArray(srcValue, true);
	          }
	          else {
	            newValue = [];
	          }
	        }
	        else if (isPlainObject(srcValue) || isArguments(srcValue)) {
	          newValue = objValue;
	          if (isArguments(objValue)) {
	            newValue = toPlainObject(objValue);
	          }
	          else if (!isObject(objValue) || isFunction(objValue)) {
	            newValue = initCloneObject(srcValue);
	          }
	        }
	        else {
	          isCommon = false;
	        }
	      }
	      if (isCommon) {
	        // Recursively merge objects and arrays (susceptible to call stack limits).
	        stack.set(srcValue, newValue);
	        mergeFunc(newValue, srcValue, srcIndex, customizer, stack);
	        stack['delete'](srcValue);
	      }
	      assignMergeValue(object, key, newValue);
	    }

	    /**
	     * The base implementation of `_.nth` which doesn't coerce arguments.
	     *
	     * @private
	     * @param {Array} array The array to query.
	     * @param {number} n The index of the element to return.
	     * @returns {*} Returns the nth element of `array`.
	     */
	    function baseNth(array, n) {
	      var length = array.length;
	      if (!length) {
	        return;
	      }
	      n += n < 0 ? length : 0;
	      return isIndex(n, length) ? array[n] : undefined$1;
	    }

	    /**
	     * The base implementation of `_.orderBy` without param guards.
	     *
	     * @private
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.
	     * @param {string[]} orders The sort orders of `iteratees`.
	     * @returns {Array} Returns the new sorted array.
	     */
	    function baseOrderBy(collection, iteratees, orders) {
	      var index = -1;
	      iteratees = arrayMap(iteratees.length ? iteratees : [identity], baseUnary(getIteratee()));

	      var result = baseMap(collection, function(value, key, collection) {
	        var criteria = arrayMap(iteratees, function(iteratee) {
	          return iteratee(value);
	        });
	        return { 'criteria': criteria, 'index': ++index, 'value': value };
	      });

	      return baseSortBy(result, function(object, other) {
	        return compareMultiple(object, other, orders);
	      });
	    }

	    /**
	     * The base implementation of `_.pick` without support for individual
	     * property identifiers.
	     *
	     * @private
	     * @param {Object} object The source object.
	     * @param {string[]} paths The property paths to pick.
	     * @returns {Object} Returns the new object.
	     */
	    function basePick(object, paths) {
	      return basePickBy(object, paths, function(value, path) {
	        return hasIn(object, path);
	      });
	    }

	    /**
	     * The base implementation of  `_.pickBy` without support for iteratee shorthands.
	     *
	     * @private
	     * @param {Object} object The source object.
	     * @param {string[]} paths The property paths to pick.
	     * @param {Function} predicate The function invoked per property.
	     * @returns {Object} Returns the new object.
	     */
	    function basePickBy(object, paths, predicate) {
	      var index = -1,
	          length = paths.length,
	          result = {};

	      while (++index < length) {
	        var path = paths[index],
	            value = baseGet(object, path);

	        if (predicate(value, path)) {
	          baseSet(result, castPath(path, object), value);
	        }
	      }
	      return result;
	    }

	    /**
	     * A specialized version of `baseProperty` which supports deep paths.
	     *
	     * @private
	     * @param {Array|string} path The path of the property to get.
	     * @returns {Function} Returns the new accessor function.
	     */
	    function basePropertyDeep(path) {
	      return function(object) {
	        return baseGet(object, path);
	      };
	    }

	    /**
	     * The base implementation of `_.pullAllBy` without support for iteratee
	     * shorthands.
	     *
	     * @private
	     * @param {Array} array The array to modify.
	     * @param {Array} values The values to remove.
	     * @param {Function} [iteratee] The iteratee invoked per element.
	     * @param {Function} [comparator] The comparator invoked per element.
	     * @returns {Array} Returns `array`.
	     */
	    function basePullAll(array, values, iteratee, comparator) {
	      var indexOf = comparator ? baseIndexOfWith : baseIndexOf,
	          index = -1,
	          length = values.length,
	          seen = array;

	      if (array === values) {
	        values = copyArray(values);
	      }
	      if (iteratee) {
	        seen = arrayMap(array, baseUnary(iteratee));
	      }
	      while (++index < length) {
	        var fromIndex = 0,
	            value = values[index],
	            computed = iteratee ? iteratee(value) : value;

	        while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {
	          if (seen !== array) {
	            splice.call(seen, fromIndex, 1);
	          }
	          splice.call(array, fromIndex, 1);
	        }
	      }
	      return array;
	    }

	    /**
	     * The base implementation of `_.pullAt` without support for individual
	     * indexes or capturing the removed elements.
	     *
	     * @private
	     * @param {Array} array The array to modify.
	     * @param {number[]} indexes The indexes of elements to remove.
	     * @returns {Array} Returns `array`.
	     */
	    function basePullAt(array, indexes) {
	      var length = array ? indexes.length : 0,
	          lastIndex = length - 1;

	      while (length--) {
	        var index = indexes[length];
	        if (length == lastIndex || index !== previous) {
	          var previous = index;
	          if (isIndex(index)) {
	            splice.call(array, index, 1);
	          } else {
	            baseUnset(array, index);
	          }
	        }
	      }
	      return array;
	    }

	    /**
	     * The base implementation of `_.random` without support for returning
	     * floating-point numbers.
	     *
	     * @private
	     * @param {number} lower The lower bound.
	     * @param {number} upper The upper bound.
	     * @returns {number} Returns the random number.
	     */
	    function baseRandom(lower, upper) {
	      return lower + nativeFloor(nativeRandom() * (upper - lower + 1));
	    }

	    /**
	     * The base implementation of `_.range` and `_.rangeRight` which doesn't
	     * coerce arguments.
	     *
	     * @private
	     * @param {number} start The start of the range.
	     * @param {number} end The end of the range.
	     * @param {number} step The value to increment or decrement by.
	     * @param {boolean} [fromRight] Specify iterating from right to left.
	     * @returns {Array} Returns the range of numbers.
	     */
	    function baseRange(start, end, step, fromRight) {
	      var index = -1,
	          length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),
	          result = Array(length);

	      while (length--) {
	        result[fromRight ? length : ++index] = start;
	        start += step;
	      }
	      return result;
	    }

	    /**
	     * The base implementation of `_.repeat` which doesn't coerce arguments.
	     *
	     * @private
	     * @param {string} string The string to repeat.
	     * @param {number} n The number of times to repeat the string.
	     * @returns {string} Returns the repeated string.
	     */
	    function baseRepeat(string, n) {
	      var result = '';
	      if (!string || n < 1 || n > MAX_SAFE_INTEGER) {
	        return result;
	      }
	      // Leverage the exponentiation by squaring algorithm for a faster repeat.
	      // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.
	      do {
	        if (n % 2) {
	          result += string;
	        }
	        n = nativeFloor(n / 2);
	        if (n) {
	          string += string;
	        }
	      } while (n);

	      return result;
	    }

	    /**
	     * The base implementation of `_.rest` which doesn't validate or coerce arguments.
	     *
	     * @private
	     * @param {Function} func The function to apply a rest parameter to.
	     * @param {number} [start=func.length-1] The start position of the rest parameter.
	     * @returns {Function} Returns the new function.
	     */
	    function baseRest(func, start) {
	      return setToString(overRest(func, start, identity), func + '');
	    }

	    /**
	     * The base implementation of `_.sample`.
	     *
	     * @private
	     * @param {Array|Object} collection The collection to sample.
	     * @returns {*} Returns the random element.
	     */
	    function baseSample(collection) {
	      return arraySample(values(collection));
	    }

	    /**
	     * The base implementation of `_.sampleSize` without param guards.
	     *
	     * @private
	     * @param {Array|Object} collection The collection to sample.
	     * @param {number} n The number of elements to sample.
	     * @returns {Array} Returns the random elements.
	     */
	    function baseSampleSize(collection, n) {
	      var array = values(collection);
	      return shuffleSelf(array, baseClamp(n, 0, array.length));
	    }

	    /**
	     * The base implementation of `_.set`.
	     *
	     * @private
	     * @param {Object} object The object to modify.
	     * @param {Array|string} path The path of the property to set.
	     * @param {*} value The value to set.
	     * @param {Function} [customizer] The function to customize path creation.
	     * @returns {Object} Returns `object`.
	     */
	    function baseSet(object, path, value, customizer) {
	      if (!isObject(object)) {
	        return object;
	      }
	      path = castPath(path, object);

	      var index = -1,
	          length = path.length,
	          lastIndex = length - 1,
	          nested = object;

	      while (nested != null && ++index < length) {
	        var key = toKey(path[index]),
	            newValue = value;

	        if (index != lastIndex) {
	          var objValue = nested[key];
	          newValue = customizer ? customizer(objValue, key, nested) : undefined$1;
	          if (newValue === undefined$1) {
	            newValue = isObject(objValue)
	              ? objValue
	              : (isIndex(path[index + 1]) ? [] : {});
	          }
	        }
	        assignValue(nested, key, newValue);
	        nested = nested[key];
	      }
	      return object;
	    }

	    /**
	     * The base implementation of `setData` without support for hot loop shorting.
	     *
	     * @private
	     * @param {Function} func The function to associate metadata with.
	     * @param {*} data The metadata.
	     * @returns {Function} Returns `func`.
	     */
	    var baseSetData = !metaMap ? identity : function(func, data) {
	      metaMap.set(func, data);
	      return func;
	    };

	    /**
	     * The base implementation of `setToString` without support for hot loop shorting.
	     *
	     * @private
	     * @param {Function} func The function to modify.
	     * @param {Function} string The `toString` result.
	     * @returns {Function} Returns `func`.
	     */
	    var baseSetToString = !defineProperty ? identity : function(func, string) {
	      return defineProperty(func, 'toString', {
	        'configurable': true,
	        'enumerable': false,
	        'value': constant(string),
	        'writable': true
	      });
	    };

	    /**
	     * The base implementation of `_.shuffle`.
	     *
	     * @private
	     * @param {Array|Object} collection The collection to shuffle.
	     * @returns {Array} Returns the new shuffled array.
	     */
	    function baseShuffle(collection) {
	      return shuffleSelf(values(collection));
	    }

	    /**
	     * The base implementation of `_.slice` without an iteratee call guard.
	     *
	     * @private
	     * @param {Array} array The array to slice.
	     * @param {number} [start=0] The start position.
	     * @param {number} [end=array.length] The end position.
	     * @returns {Array} Returns the slice of `array`.
	     */
	    function baseSlice(array, start, end) {
	      var index = -1,
	          length = array.length;

	      if (start < 0) {
	        start = -start > length ? 0 : (length + start);
	      }
	      end = end > length ? length : end;
	      if (end < 0) {
	        end += length;
	      }
	      length = start > end ? 0 : ((end - start) >>> 0);
	      start >>>= 0;

	      var result = Array(length);
	      while (++index < length) {
	        result[index] = array[index + start];
	      }
	      return result;
	    }

	    /**
	     * The base implementation of `_.some` without support for iteratee shorthands.
	     *
	     * @private
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} predicate The function invoked per iteration.
	     * @returns {boolean} Returns `true` if any element passes the predicate check,
	     *  else `false`.
	     */
	    function baseSome(collection, predicate) {
	      var result;

	      baseEach(collection, function(value, index, collection) {
	        result = predicate(value, index, collection);
	        return !result;
	      });
	      return !!result;
	    }

	    /**
	     * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which
	     * performs a binary search of `array` to determine the index at which `value`
	     * should be inserted into `array` in order to maintain its sort order.
	     *
	     * @private
	     * @param {Array} array The sorted array to inspect.
	     * @param {*} value The value to evaluate.
	     * @param {boolean} [retHighest] Specify returning the highest qualified index.
	     * @returns {number} Returns the index at which `value` should be inserted
	     *  into `array`.
	     */
	    function baseSortedIndex(array, value, retHighest) {
	      var low = 0,
	          high = array == null ? low : array.length;

	      if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {
	        while (low < high) {
	          var mid = (low + high) >>> 1,
	              computed = array[mid];

	          if (computed !== null && !isSymbol(computed) &&
	              (retHighest ? (computed <= value) : (computed < value))) {
	            low = mid + 1;
	          } else {
	            high = mid;
	          }
	        }
	        return high;
	      }
	      return baseSortedIndexBy(array, value, identity, retHighest);
	    }

	    /**
	     * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`
	     * which invokes `iteratee` for `value` and each element of `array` to compute
	     * their sort ranking. The iteratee is invoked with one argument; (value).
	     *
	     * @private
	     * @param {Array} array The sorted array to inspect.
	     * @param {*} value The value to evaluate.
	     * @param {Function} iteratee The iteratee invoked per element.
	     * @param {boolean} [retHighest] Specify returning the highest qualified index.
	     * @returns {number} Returns the index at which `value` should be inserted
	     *  into `array`.
	     */
	    function baseSortedIndexBy(array, value, iteratee, retHighest) {
	      value = iteratee(value);

	      var low = 0,
	          high = array == null ? 0 : array.length,
	          valIsNaN = value !== value,
	          valIsNull = value === null,
	          valIsSymbol = isSymbol(value),
	          valIsUndefined = value === undefined$1;

	      while (low < high) {
	        var mid = nativeFloor((low + high) / 2),
	            computed = iteratee(array[mid]),
	            othIsDefined = computed !== undefined$1,
	            othIsNull = computed === null,
	            othIsReflexive = computed === computed,
	            othIsSymbol = isSymbol(computed);

	        if (valIsNaN) {
	          var setLow = retHighest || othIsReflexive;
	        } else if (valIsUndefined) {
	          setLow = othIsReflexive && (retHighest || othIsDefined);
	        } else if (valIsNull) {
	          setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);
	        } else if (valIsSymbol) {
	          setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);
	        } else if (othIsNull || othIsSymbol) {
	          setLow = false;
	        } else {
	          setLow = retHighest ? (computed <= value) : (computed < value);
	        }
	        if (setLow) {
	          low = mid + 1;
	        } else {
	          high = mid;
	        }
	      }
	      return nativeMin(high, MAX_ARRAY_INDEX);
	    }

	    /**
	     * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without
	     * support for iteratee shorthands.
	     *
	     * @private
	     * @param {Array} array The array to inspect.
	     * @param {Function} [iteratee] The iteratee invoked per element.
	     * @returns {Array} Returns the new duplicate free array.
	     */
	    function baseSortedUniq(array, iteratee) {
	      var index = -1,
	          length = array.length,
	          resIndex = 0,
	          result = [];

	      while (++index < length) {
	        var value = array[index],
	            computed = iteratee ? iteratee(value) : value;

	        if (!index || !eq(computed, seen)) {
	          var seen = computed;
	          result[resIndex++] = value === 0 ? 0 : value;
	        }
	      }
	      return result;
	    }

	    /**
	     * The base implementation of `_.toNumber` which doesn't ensure correct
	     * conversions of binary, hexadecimal, or octal string values.
	     *
	     * @private
	     * @param {*} value The value to process.
	     * @returns {number} Returns the number.
	     */
	    function baseToNumber(value) {
	      if (typeof value == 'number') {
	        return value;
	      }
	      if (isSymbol(value)) {
	        return NAN;
	      }
	      return +value;
	    }

	    /**
	     * The base implementation of `_.toString` which doesn't convert nullish
	     * values to empty strings.
	     *
	     * @private
	     * @param {*} value The value to process.
	     * @returns {string} Returns the string.
	     */
	    function baseToString(value) {
	      // Exit early for strings to avoid a performance hit in some environments.
	      if (typeof value == 'string') {
	        return value;
	      }
	      if (isArray(value)) {
	        // Recursively convert values (susceptible to call stack limits).
	        return arrayMap(value, baseToString) + '';
	      }
	      if (isSymbol(value)) {
	        return symbolToString ? symbolToString.call(value) : '';
	      }
	      var result = (value + '');
	      return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
	    }

	    /**
	     * The base implementation of `_.uniqBy` without support for iteratee shorthands.
	     *
	     * @private
	     * @param {Array} array The array to inspect.
	     * @param {Function} [iteratee] The iteratee invoked per element.
	     * @param {Function} [comparator] The comparator invoked per element.
	     * @returns {Array} Returns the new duplicate free array.
	     */
	    function baseUniq(array, iteratee, comparator) {
	      var index = -1,
	          includes = arrayIncludes,
	          length = array.length,
	          isCommon = true,
	          result = [],
	          seen = result;

	      if (comparator) {
	        isCommon = false;
	        includes = arrayIncludesWith;
	      }
	      else if (length >= LARGE_ARRAY_SIZE) {
	        var set = iteratee ? null : createSet(array);
	        if (set) {
	          return setToArray(set);
	        }
	        isCommon = false;
	        includes = cacheHas;
	        seen = new SetCache;
	      }
	      else {
	        seen = iteratee ? [] : result;
	      }
	      outer:
	      while (++index < length) {
	        var value = array[index],
	            computed = iteratee ? iteratee(value) : value;

	        value = (comparator || value !== 0) ? value : 0;
	        if (isCommon && computed === computed) {
	          var seenIndex = seen.length;
	          while (seenIndex--) {
	            if (seen[seenIndex] === computed) {
	              continue outer;
	            }
	          }
	          if (iteratee) {
	            seen.push(computed);
	          }
	          result.push(value);
	        }
	        else if (!includes(seen, computed, comparator)) {
	          if (seen !== result) {
	            seen.push(computed);
	          }
	          result.push(value);
	        }
	      }
	      return result;
	    }

	    /**
	     * The base implementation of `_.unset`.
	     *
	     * @private
	     * @param {Object} object The object to modify.
	     * @param {Array|string} path The property path to unset.
	     * @returns {boolean} Returns `true` if the property is deleted, else `false`.
	     */
	    function baseUnset(object, path) {
	      path = castPath(path, object);
	      object = parent(object, path);
	      return object == null || delete object[toKey(last(path))];
	    }

	    /**
	     * The base implementation of `_.update`.
	     *
	     * @private
	     * @param {Object} object The object to modify.
	     * @param {Array|string} path The path of the property to update.
	     * @param {Function} updater The function to produce the updated value.
	     * @param {Function} [customizer] The function to customize path creation.
	     * @returns {Object} Returns `object`.
	     */
	    function baseUpdate(object, path, updater, customizer) {
	      return baseSet(object, path, updater(baseGet(object, path)), customizer);
	    }

	    /**
	     * The base implementation of methods like `_.dropWhile` and `_.takeWhile`
	     * without support for iteratee shorthands.
	     *
	     * @private
	     * @param {Array} array The array to query.
	     * @param {Function} predicate The function invoked per iteration.
	     * @param {boolean} [isDrop] Specify dropping elements instead of taking them.
	     * @param {boolean} [fromRight] Specify iterating from right to left.
	     * @returns {Array} Returns the slice of `array`.
	     */
	    function baseWhile(array, predicate, isDrop, fromRight) {
	      var length = array.length,
	          index = fromRight ? length : -1;

	      while ((fromRight ? index-- : ++index < length) &&
	        predicate(array[index], index, array)) {}

	      return isDrop
	        ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))
	        : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));
	    }

	    /**
	     * The base implementation of `wrapperValue` which returns the result of
	     * performing a sequence of actions on the unwrapped `value`, where each
	     * successive action is supplied the return value of the previous.
	     *
	     * @private
	     * @param {*} value The unwrapped value.
	     * @param {Array} actions Actions to perform to resolve the unwrapped value.
	     * @returns {*} Returns the resolved value.
	     */
	    function baseWrapperValue(value, actions) {
	      var result = value;
	      if (result instanceof LazyWrapper) {
	        result = result.value();
	      }
	      return arrayReduce(actions, function(result, action) {
	        return action.func.apply(action.thisArg, arrayPush([result], action.args));
	      }, result);
	    }

	    /**
	     * The base implementation of methods like `_.xor`, without support for
	     * iteratee shorthands, that accepts an array of arrays to inspect.
	     *
	     * @private
	     * @param {Array} arrays The arrays to inspect.
	     * @param {Function} [iteratee] The iteratee invoked per element.
	     * @param {Function} [comparator] The comparator invoked per element.
	     * @returns {Array} Returns the new array of values.
	     */
	    function baseXor(arrays, iteratee, comparator) {
	      var length = arrays.length;
	      if (length < 2) {
	        return length ? baseUniq(arrays[0]) : [];
	      }
	      var index = -1,
	          result = Array(length);

	      while (++index < length) {
	        var array = arrays[index],
	            othIndex = -1;

	        while (++othIndex < length) {
	          if (othIndex != index) {
	            result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);
	          }
	        }
	      }
	      return baseUniq(baseFlatten(result, 1), iteratee, comparator);
	    }

	    /**
	     * This base implementation of `_.zipObject` which assigns values using `assignFunc`.
	     *
	     * @private
	     * @param {Array} props The property identifiers.
	     * @param {Array} values The property values.
	     * @param {Function} assignFunc The function to assign values.
	     * @returns {Object} Returns the new object.
	     */
	    function baseZipObject(props, values, assignFunc) {
	      var index = -1,
	          length = props.length,
	          valsLength = values.length,
	          result = {};

	      while (++index < length) {
	        var value = index < valsLength ? values[index] : undefined$1;
	        assignFunc(result, props[index], value);
	      }
	      return result;
	    }

	    /**
	     * Casts `value` to an empty array if it's not an array like object.
	     *
	     * @private
	     * @param {*} value The value to inspect.
	     * @returns {Array|Object} Returns the cast array-like object.
	     */
	    function castArrayLikeObject(value) {
	      return isArrayLikeObject(value) ? value : [];
	    }

	    /**
	     * Casts `value` to `identity` if it's not a function.
	     *
	     * @private
	     * @param {*} value The value to inspect.
	     * @returns {Function} Returns cast function.
	     */
	    function castFunction(value) {
	      return typeof value == 'function' ? value : identity;
	    }

	    /**
	     * Casts `value` to a path array if it's not one.
	     *
	     * @private
	     * @param {*} value The value to inspect.
	     * @param {Object} [object] The object to query keys on.
	     * @returns {Array} Returns the cast property path array.
	     */
	    function castPath(value, object) {
	      if (isArray(value)) {
	        return value;
	      }
	      return isKey(value, object) ? [value] : stringToPath(toString(value));
	    }

	    /**
	     * A `baseRest` alias which can be replaced with `identity` by module
	     * replacement plugins.
	     *
	     * @private
	     * @type {Function}
	     * @param {Function} func The function to apply a rest parameter to.
	     * @returns {Function} Returns the new function.
	     */
	    var castRest = baseRest;

	    /**
	     * Casts `array` to a slice if it's needed.
	     *
	     * @private
	     * @param {Array} array The array to inspect.
	     * @param {number} start The start position.
	     * @param {number} [end=array.length] The end position.
	     * @returns {Array} Returns the cast slice.
	     */
	    function castSlice(array, start, end) {
	      var length = array.length;
	      end = end === undefined$1 ? length : end;
	      return (!start && end >= length) ? array : baseSlice(array, start, end);
	    }

	    /**
	     * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout).
	     *
	     * @private
	     * @param {number|Object} id The timer id or timeout object of the timer to clear.
	     */
	    var clearTimeout = ctxClearTimeout || function(id) {
	      return root.clearTimeout(id);
	    };

	    /**
	     * Creates a clone of  `buffer`.
	     *
	     * @private
	     * @param {Buffer} buffer The buffer to clone.
	     * @param {boolean} [isDeep] Specify a deep clone.
	     * @returns {Buffer} Returns the cloned buffer.
	     */
	    function cloneBuffer(buffer, isDeep) {
	      if (isDeep) {
	        return buffer.slice();
	      }
	      var length = buffer.length,
	          result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);

	      buffer.copy(result);
	      return result;
	    }

	    /**
	     * Creates a clone of `arrayBuffer`.
	     *
	     * @private
	     * @param {ArrayBuffer} arrayBuffer The array buffer to clone.
	     * @returns {ArrayBuffer} Returns the cloned array buffer.
	     */
	    function cloneArrayBuffer(arrayBuffer) {
	      var result = new arrayBuffer.constructor(arrayBuffer.byteLength);
	      new Uint8Array(result).set(new Uint8Array(arrayBuffer));
	      return result;
	    }

	    /**
	     * Creates a clone of `dataView`.
	     *
	     * @private
	     * @param {Object} dataView The data view to clone.
	     * @param {boolean} [isDeep] Specify a deep clone.
	     * @returns {Object} Returns the cloned data view.
	     */
	    function cloneDataView(dataView, isDeep) {
	      var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;
	      return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);
	    }

	    /**
	     * Creates a clone of `regexp`.
	     *
	     * @private
	     * @param {Object} regexp The regexp to clone.
	     * @returns {Object} Returns the cloned regexp.
	     */
	    function cloneRegExp(regexp) {
	      var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));
	      result.lastIndex = regexp.lastIndex;
	      return result;
	    }

	    /**
	     * Creates a clone of the `symbol` object.
	     *
	     * @private
	     * @param {Object} symbol The symbol object to clone.
	     * @returns {Object} Returns the cloned symbol object.
	     */
	    function cloneSymbol(symbol) {
	      return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};
	    }

	    /**
	     * Creates a clone of `typedArray`.
	     *
	     * @private
	     * @param {Object} typedArray The typed array to clone.
	     * @param {boolean} [isDeep] Specify a deep clone.
	     * @returns {Object} Returns the cloned typed array.
	     */
	    function cloneTypedArray(typedArray, isDeep) {
	      var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;
	      return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);
	    }

	    /**
	     * Compares values to sort them in ascending order.
	     *
	     * @private
	     * @param {*} value The value to compare.
	     * @param {*} other The other value to compare.
	     * @returns {number} Returns the sort order indicator for `value`.
	     */
	    function compareAscending(value, other) {
	      if (value !== other) {
	        var valIsDefined = value !== undefined$1,
	            valIsNull = value === null,
	            valIsReflexive = value === value,
	            valIsSymbol = isSymbol(value);

	        var othIsDefined = other !== undefined$1,
	            othIsNull = other === null,
	            othIsReflexive = other === other,
	            othIsSymbol = isSymbol(other);

	        if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||
	            (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||
	            (valIsNull && othIsDefined && othIsReflexive) ||
	            (!valIsDefined && othIsReflexive) ||
	            !valIsReflexive) {
	          return 1;
	        }
	        if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||
	            (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||
	            (othIsNull && valIsDefined && valIsReflexive) ||
	            (!othIsDefined && valIsReflexive) ||
	            !othIsReflexive) {
	          return -1;
	        }
	      }
	      return 0;
	    }

	    /**
	     * Used by `_.orderBy` to compare multiple properties of a value to another
	     * and stable sort them.
	     *
	     * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,
	     * specify an order of "desc" for descending or "asc" for ascending sort order
	     * of corresponding values.
	     *
	     * @private
	     * @param {Object} object The object to compare.
	     * @param {Object} other The other object to compare.
	     * @param {boolean[]|string[]} orders The order to sort by for each property.
	     * @returns {number} Returns the sort order indicator for `object`.
	     */
	    function compareMultiple(object, other, orders) {
	      var index = -1,
	          objCriteria = object.criteria,
	          othCriteria = other.criteria,
	          length = objCriteria.length,
	          ordersLength = orders.length;

	      while (++index < length) {
	        var result = compareAscending(objCriteria[index], othCriteria[index]);
	        if (result) {
	          if (index >= ordersLength) {
	            return result;
	          }
	          var order = orders[index];
	          return result * (order == 'desc' ? -1 : 1);
	        }
	      }
	      // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications
	      // that causes it, under certain circumstances, to provide the same value for
	      // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247
	      // for more details.
	      //
	      // This also ensures a stable sort in V8 and other engines.
	      // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.
	      return object.index - other.index;
	    }

	    /**
	     * Creates an array that is the composition of partially applied arguments,
	     * placeholders, and provided arguments into a single array of arguments.
	     *
	     * @private
	     * @param {Array} args The provided arguments.
	     * @param {Array} partials The arguments to prepend to those provided.
	     * @param {Array} holders The `partials` placeholder indexes.
	     * @params {boolean} [isCurried] Specify composing for a curried function.
	     * @returns {Array} Returns the new array of composed arguments.
	     */
	    function composeArgs(args, partials, holders, isCurried) {
	      var argsIndex = -1,
	          argsLength = args.length,
	          holdersLength = holders.length,
	          leftIndex = -1,
	          leftLength = partials.length,
	          rangeLength = nativeMax(argsLength - holdersLength, 0),
	          result = Array(leftLength + rangeLength),
	          isUncurried = !isCurried;

	      while (++leftIndex < leftLength) {
	        result[leftIndex] = partials[leftIndex];
	      }
	      while (++argsIndex < holdersLength) {
	        if (isUncurried || argsIndex < argsLength) {
	          result[holders[argsIndex]] = args[argsIndex];
	        }
	      }
	      while (rangeLength--) {
	        result[leftIndex++] = args[argsIndex++];
	      }
	      return result;
	    }

	    /**
	     * This function is like `composeArgs` except that the arguments composition
	     * is tailored for `_.partialRight`.
	     *
	     * @private
	     * @param {Array} args The provided arguments.
	     * @param {Array} partials The arguments to append to those provided.
	     * @param {Array} holders The `partials` placeholder indexes.
	     * @params {boolean} [isCurried] Specify composing for a curried function.
	     * @returns {Array} Returns the new array of composed arguments.
	     */
	    function composeArgsRight(args, partials, holders, isCurried) {
	      var argsIndex = -1,
	          argsLength = args.length,
	          holdersIndex = -1,
	          holdersLength = holders.length,
	          rightIndex = -1,
	          rightLength = partials.length,
	          rangeLength = nativeMax(argsLength - holdersLength, 0),
	          result = Array(rangeLength + rightLength),
	          isUncurried = !isCurried;

	      while (++argsIndex < rangeLength) {
	        result[argsIndex] = args[argsIndex];
	      }
	      var offset = argsIndex;
	      while (++rightIndex < rightLength) {
	        result[offset + rightIndex] = partials[rightIndex];
	      }
	      while (++holdersIndex < holdersLength) {
	        if (isUncurried || argsIndex < argsLength) {
	          result[offset + holders[holdersIndex]] = args[argsIndex++];
	        }
	      }
	      return result;
	    }

	    /**
	     * Copies the values of `source` to `array`.
	     *
	     * @private
	     * @param {Array} source The array to copy values from.
	     * @param {Array} [array=[]] The array to copy values to.
	     * @returns {Array} Returns `array`.
	     */
	    function copyArray(source, array) {
	      var index = -1,
	          length = source.length;

	      array || (array = Array(length));
	      while (++index < length) {
	        array[index] = source[index];
	      }
	      return array;
	    }

	    /**
	     * Copies properties of `source` to `object`.
	     *
	     * @private
	     * @param {Object} source The object to copy properties from.
	     * @param {Array} props The property identifiers to copy.
	     * @param {Object} [object={}] The object to copy properties to.
	     * @param {Function} [customizer] The function to customize copied values.
	     * @returns {Object} Returns `object`.
	     */
	    function copyObject(source, props, object, customizer) {
	      var isNew = !object;
	      object || (object = {});

	      var index = -1,
	          length = props.length;

	      while (++index < length) {
	        var key = props[index];

	        var newValue = customizer
	          ? customizer(object[key], source[key], key, object, source)
	          : undefined$1;

	        if (newValue === undefined$1) {
	          newValue = source[key];
	        }
	        if (isNew) {
	          baseAssignValue(object, key, newValue);
	        } else {
	          assignValue(object, key, newValue);
	        }
	      }
	      return object;
	    }

	    /**
	     * Copies own symbols of `source` to `object`.
	     *
	     * @private
	     * @param {Object} source The object to copy symbols from.
	     * @param {Object} [object={}] The object to copy symbols to.
	     * @returns {Object} Returns `object`.
	     */
	    function copySymbols(source, object) {
	      return copyObject(source, getSymbols(source), object);
	    }

	    /**
	     * Copies own and inherited symbols of `source` to `object`.
	     *
	     * @private
	     * @param {Object} source The object to copy symbols from.
	     * @param {Object} [object={}] The object to copy symbols to.
	     * @returns {Object} Returns `object`.
	     */
	    function copySymbolsIn(source, object) {
	      return copyObject(source, getSymbolsIn(source), object);
	    }

	    /**
	     * Creates a function like `_.groupBy`.
	     *
	     * @private
	     * @param {Function} setter The function to set accumulator values.
	     * @param {Function} [initializer] The accumulator object initializer.
	     * @returns {Function} Returns the new aggregator function.
	     */
	    function createAggregator(setter, initializer) {
	      return function(collection, iteratee) {
	        var func = isArray(collection) ? arrayAggregator : baseAggregator,
	            accumulator = initializer ? initializer() : {};

	        return func(collection, setter, getIteratee(iteratee, 2), accumulator);
	      };
	    }

	    /**
	     * Creates a function like `_.assign`.
	     *
	     * @private
	     * @param {Function} assigner The function to assign values.
	     * @returns {Function} Returns the new assigner function.
	     */
	    function createAssigner(assigner) {
	      return baseRest(function(object, sources) {
	        var index = -1,
	            length = sources.length,
	            customizer = length > 1 ? sources[length - 1] : undefined$1,
	            guard = length > 2 ? sources[2] : undefined$1;

	        customizer = (assigner.length > 3 && typeof customizer == 'function')
	          ? (length--, customizer)
	          : undefined$1;

	        if (guard && isIterateeCall(sources[0], sources[1], guard)) {
	          customizer = length < 3 ? undefined$1 : customizer;
	          length = 1;
	        }
	        object = Object(object);
	        while (++index < length) {
	          var source = sources[index];
	          if (source) {
	            assigner(object, source, index, customizer);
	          }
	        }
	        return object;
	      });
	    }

	    /**
	     * Creates a `baseEach` or `baseEachRight` function.
	     *
	     * @private
	     * @param {Function} eachFunc The function to iterate over a collection.
	     * @param {boolean} [fromRight] Specify iterating from right to left.
	     * @returns {Function} Returns the new base function.
	     */
	    function createBaseEach(eachFunc, fromRight) {
	      return function(collection, iteratee) {
	        if (collection == null) {
	          return collection;
	        }
	        if (!isArrayLike(collection)) {
	          return eachFunc(collection, iteratee);
	        }
	        var length = collection.length,
	            index = fromRight ? length : -1,
	            iterable = Object(collection);

	        while ((fromRight ? index-- : ++index < length)) {
	          if (iteratee(iterable[index], index, iterable) === false) {
	            break;
	          }
	        }
	        return collection;
	      };
	    }

	    /**
	     * Creates a base function for methods like `_.forIn` and `_.forOwn`.
	     *
	     * @private
	     * @param {boolean} [fromRight] Specify iterating from right to left.
	     * @returns {Function} Returns the new base function.
	     */
	    function createBaseFor(fromRight) {
	      return function(object, iteratee, keysFunc) {
	        var index = -1,
	            iterable = Object(object),
	            props = keysFunc(object),
	            length = props.length;

	        while (length--) {
	          var key = props[fromRight ? length : ++index];
	          if (iteratee(iterable[key], key, iterable) === false) {
	            break;
	          }
	        }
	        return object;
	      };
	    }

	    /**
	     * Creates a function that wraps `func` to invoke it with the optional `this`
	     * binding of `thisArg`.
	     *
	     * @private
	     * @param {Function} func The function to wrap.
	     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
	     * @param {*} [thisArg] The `this` binding of `func`.
	     * @returns {Function} Returns the new wrapped function.
	     */
	    function createBind(func, bitmask, thisArg) {
	      var isBind = bitmask & WRAP_BIND_FLAG,
	          Ctor = createCtor(func);

	      function wrapper() {
	        var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
	        return fn.apply(isBind ? thisArg : this, arguments);
	      }
	      return wrapper;
	    }

	    /**
	     * Creates a function like `_.lowerFirst`.
	     *
	     * @private
	     * @param {string} methodName The name of the `String` case method to use.
	     * @returns {Function} Returns the new case function.
	     */
	    function createCaseFirst(methodName) {
	      return function(string) {
	        string = toString(string);

	        var strSymbols = hasUnicode(string)
	          ? stringToArray(string)
	          : undefined$1;

	        var chr = strSymbols
	          ? strSymbols[0]
	          : string.charAt(0);

	        var trailing = strSymbols
	          ? castSlice(strSymbols, 1).join('')
	          : string.slice(1);

	        return chr[methodName]() + trailing;
	      };
	    }

	    /**
	     * Creates a function like `_.camelCase`.
	     *
	     * @private
	     * @param {Function} callback The function to combine each word.
	     * @returns {Function} Returns the new compounder function.
	     */
	    function createCompounder(callback) {
	      return function(string) {
	        return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');
	      };
	    }

	    /**
	     * Creates a function that produces an instance of `Ctor` regardless of
	     * whether it was invoked as part of a `new` expression or by `call` or `apply`.
	     *
	     * @private
	     * @param {Function} Ctor The constructor to wrap.
	     * @returns {Function} Returns the new wrapped function.
	     */
	    function createCtor(Ctor) {
	      return function() {
	        // Use a `switch` statement to work with class constructors. See
	        // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist
	        // for more details.
	        var args = arguments;
	        switch (args.length) {
	          case 0: return new Ctor;
	          case 1: return new Ctor(args[0]);
	          case 2: return new Ctor(args[0], args[1]);
	          case 3: return new Ctor(args[0], args[1], args[2]);
	          case 4: return new Ctor(args[0], args[1], args[2], args[3]);
	          case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]);
	          case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);
	          case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);
	        }
	        var thisBinding = baseCreate(Ctor.prototype),
	            result = Ctor.apply(thisBinding, args);

	        // Mimic the constructor's `return` behavior.
	        // See https://es5.github.io/#x13.2.2 for more details.
	        return isObject(result) ? result : thisBinding;
	      };
	    }

	    /**
	     * Creates a function that wraps `func` to enable currying.
	     *
	     * @private
	     * @param {Function} func The function to wrap.
	     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
	     * @param {number} arity The arity of `func`.
	     * @returns {Function} Returns the new wrapped function.
	     */
	    function createCurry(func, bitmask, arity) {
	      var Ctor = createCtor(func);

	      function wrapper() {
	        var length = arguments.length,
	            args = Array(length),
	            index = length,
	            placeholder = getHolder(wrapper);

	        while (index--) {
	          args[index] = arguments[index];
	        }
	        var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder)
	          ? []
	          : replaceHolders(args, placeholder);

	        length -= holders.length;
	        if (length < arity) {
	          return createRecurry(
	            func, bitmask, createHybrid, wrapper.placeholder, undefined$1,
	            args, holders, undefined$1, undefined$1, arity - length);
	        }
	        var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
	        return apply(fn, this, args);
	      }
	      return wrapper;
	    }

	    /**
	     * Creates a `_.find` or `_.findLast` function.
	     *
	     * @private
	     * @param {Function} findIndexFunc The function to find the collection index.
	     * @returns {Function} Returns the new find function.
	     */
	    function createFind(findIndexFunc) {
	      return function(collection, predicate, fromIndex) {
	        var iterable = Object(collection);
	        if (!isArrayLike(collection)) {
	          var iteratee = getIteratee(predicate, 3);
	          collection = keys(collection);
	          predicate = function(key) { return iteratee(iterable[key], key, iterable); };
	        }
	        var index = findIndexFunc(collection, predicate, fromIndex);
	        return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined$1;
	      };
	    }

	    /**
	     * Creates a `_.flow` or `_.flowRight` function.
	     *
	     * @private
	     * @param {boolean} [fromRight] Specify iterating from right to left.
	     * @returns {Function} Returns the new flow function.
	     */
	    function createFlow(fromRight) {
	      return flatRest(function(funcs) {
	        var length = funcs.length,
	            index = length,
	            prereq = LodashWrapper.prototype.thru;

	        if (fromRight) {
	          funcs.reverse();
	        }
	        while (index--) {
	          var func = funcs[index];
	          if (typeof func != 'function') {
	            throw new TypeError(FUNC_ERROR_TEXT);
	          }
	          if (prereq && !wrapper && getFuncName(func) == 'wrapper') {
	            var wrapper = new LodashWrapper([], true);
	          }
	        }
	        index = wrapper ? index : length;
	        while (++index < length) {
	          func = funcs[index];

	          var funcName = getFuncName(func),
	              data = funcName == 'wrapper' ? getData(func) : undefined$1;

	          if (data && isLaziable(data[0]) &&
	                data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) &&
	                !data[4].length && data[9] == 1
	              ) {
	            wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);
	          } else {
	            wrapper = (func.length == 1 && isLaziable(func))
	              ? wrapper[funcName]()
	              : wrapper.thru(func);
	          }
	        }
	        return function() {
	          var args = arguments,
	              value = args[0];

	          if (wrapper && args.length == 1 && isArray(value)) {
	            return wrapper.plant(value).value();
	          }
	          var index = 0,
	              result = length ? funcs[index].apply(this, args) : value;

	          while (++index < length) {
	            result = funcs[index].call(this, result);
	          }
	          return result;
	        };
	      });
	    }

	    /**
	     * Creates a function that wraps `func` to invoke it with optional `this`
	     * binding of `thisArg`, partial application, and currying.
	     *
	     * @private
	     * @param {Function|string} func The function or method name to wrap.
	     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
	     * @param {*} [thisArg] The `this` binding of `func`.
	     * @param {Array} [partials] The arguments to prepend to those provided to
	     *  the new function.
	     * @param {Array} [holders] The `partials` placeholder indexes.
	     * @param {Array} [partialsRight] The arguments to append to those provided
	     *  to the new function.
	     * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.
	     * @param {Array} [argPos] The argument positions of the new function.
	     * @param {number} [ary] The arity cap of `func`.
	     * @param {number} [arity] The arity of `func`.
	     * @returns {Function} Returns the new wrapped function.
	     */
	    function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {
	      var isAry = bitmask & WRAP_ARY_FLAG,
	          isBind = bitmask & WRAP_BIND_FLAG,
	          isBindKey = bitmask & WRAP_BIND_KEY_FLAG,
	          isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),
	          isFlip = bitmask & WRAP_FLIP_FLAG,
	          Ctor = isBindKey ? undefined$1 : createCtor(func);

	      function wrapper() {
	        var length = arguments.length,
	            args = Array(length),
	            index = length;

	        while (index--) {
	          args[index] = arguments[index];
	        }
	        if (isCurried) {
	          var placeholder = getHolder(wrapper),
	              holdersCount = countHolders(args, placeholder);
	        }
	        if (partials) {
	          args = composeArgs(args, partials, holders, isCurried);
	        }
	        if (partialsRight) {
	          args = composeArgsRight(args, partialsRight, holdersRight, isCurried);
	        }
	        length -= holdersCount;
	        if (isCurried && length < arity) {
	          var newHolders = replaceHolders(args, placeholder);
	          return createRecurry(
	            func, bitmask, createHybrid, wrapper.placeholder, thisArg,
	            args, newHolders, argPos, ary, arity - length
	          );
	        }
	        var thisBinding = isBind ? thisArg : this,
	            fn = isBindKey ? thisBinding[func] : func;

	        length = args.length;
	        if (argPos) {
	          args = reorder(args, argPos);
	        } else if (isFlip && length > 1) {
	          args.reverse();
	        }
	        if (isAry && ary < length) {
	          args.length = ary;
	        }
	        if (this && this !== root && this instanceof wrapper) {
	          fn = Ctor || createCtor(fn);
	        }
	        return fn.apply(thisBinding, args);
	      }
	      return wrapper;
	    }

	    /**
	     * Creates a function like `_.invertBy`.
	     *
	     * @private
	     * @param {Function} setter The function to set accumulator values.
	     * @param {Function} toIteratee The function to resolve iteratees.
	     * @returns {Function} Returns the new inverter function.
	     */
	    function createInverter(setter, toIteratee) {
	      return function(object, iteratee) {
	        return baseInverter(object, setter, toIteratee(iteratee), {});
	      };
	    }

	    /**
	     * Creates a function that performs a mathematical operation on two values.
	     *
	     * @private
	     * @param {Function} operator The function to perform the operation.
	     * @param {number} [defaultValue] The value used for `undefined` arguments.
	     * @returns {Function} Returns the new mathematical operation function.
	     */
	    function createMathOperation(operator, defaultValue) {
	      return function(value, other) {
	        var result;
	        if (value === undefined$1 && other === undefined$1) {
	          return defaultValue;
	        }
	        if (value !== undefined$1) {
	          result = value;
	        }
	        if (other !== undefined$1) {
	          if (result === undefined$1) {
	            return other;
	          }
	          if (typeof value == 'string' || typeof other == 'string') {
	            value = baseToString(value);
	            other = baseToString(other);
	          } else {
	            value = baseToNumber(value);
	            other = baseToNumber(other);
	          }
	          result = operator(value, other);
	        }
	        return result;
	      };
	    }

	    /**
	     * Creates a function like `_.over`.
	     *
	     * @private
	     * @param {Function} arrayFunc The function to iterate over iteratees.
	     * @returns {Function} Returns the new over function.
	     */
	    function createOver(arrayFunc) {
	      return flatRest(function(iteratees) {
	        iteratees = arrayMap(iteratees, baseUnary(getIteratee()));
	        return baseRest(function(args) {
	          var thisArg = this;
	          return arrayFunc(iteratees, function(iteratee) {
	            return apply(iteratee, thisArg, args);
	          });
	        });
	      });
	    }

	    /**
	     * Creates the padding for `string` based on `length`. The `chars` string
	     * is truncated if the number of characters exceeds `length`.
	     *
	     * @private
	     * @param {number} length The padding length.
	     * @param {string} [chars=' '] The string used as padding.
	     * @returns {string} Returns the padding for `string`.
	     */
	    function createPadding(length, chars) {
	      chars = chars === undefined$1 ? ' ' : baseToString(chars);

	      var charsLength = chars.length;
	      if (charsLength < 2) {
	        return charsLength ? baseRepeat(chars, length) : chars;
	      }
	      var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));
	      return hasUnicode(chars)
	        ? castSlice(stringToArray(result), 0, length).join('')
	        : result.slice(0, length);
	    }

	    /**
	     * Creates a function that wraps `func` to invoke it with the `this` binding
	     * of `thisArg` and `partials` prepended to the arguments it receives.
	     *
	     * @private
	     * @param {Function} func The function to wrap.
	     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
	     * @param {*} thisArg The `this` binding of `func`.
	     * @param {Array} partials The arguments to prepend to those provided to
	     *  the new function.
	     * @returns {Function} Returns the new wrapped function.
	     */
	    function createPartial(func, bitmask, thisArg, partials) {
	      var isBind = bitmask & WRAP_BIND_FLAG,
	          Ctor = createCtor(func);

	      function wrapper() {
	        var argsIndex = -1,
	            argsLength = arguments.length,
	            leftIndex = -1,
	            leftLength = partials.length,
	            args = Array(leftLength + argsLength),
	            fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;

	        while (++leftIndex < leftLength) {
	          args[leftIndex] = partials[leftIndex];
	        }
	        while (argsLength--) {
	          args[leftIndex++] = arguments[++argsIndex];
	        }
	        return apply(fn, isBind ? thisArg : this, args);
	      }
	      return wrapper;
	    }

	    /**
	     * Creates a `_.range` or `_.rangeRight` function.
	     *
	     * @private
	     * @param {boolean} [fromRight] Specify iterating from right to left.
	     * @returns {Function} Returns the new range function.
	     */
	    function createRange(fromRight) {
	      return function(start, end, step) {
	        if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {
	          end = step = undefined$1;
	        }
	        // Ensure the sign of `-0` is preserved.
	        start = toFinite(start);
	        if (end === undefined$1) {
	          end = start;
	          start = 0;
	        } else {
	          end = toFinite(end);
	        }
	        step = step === undefined$1 ? (start < end ? 1 : -1) : toFinite(step);
	        return baseRange(start, end, step, fromRight);
	      };
	    }

	    /**
	     * Creates a function that performs a relational operation on two values.
	     *
	     * @private
	     * @param {Function} operator The function to perform the operation.
	     * @returns {Function} Returns the new relational operation function.
	     */
	    function createRelationalOperation(operator) {
	      return function(value, other) {
	        if (!(typeof value == 'string' && typeof other == 'string')) {
	          value = toNumber(value);
	          other = toNumber(other);
	        }
	        return operator(value, other);
	      };
	    }

	    /**
	     * Creates a function that wraps `func` to continue currying.
	     *
	     * @private
	     * @param {Function} func The function to wrap.
	     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
	     * @param {Function} wrapFunc The function to create the `func` wrapper.
	     * @param {*} placeholder The placeholder value.
	     * @param {*} [thisArg] The `this` binding of `func`.
	     * @param {Array} [partials] The arguments to prepend to those provided to
	     *  the new function.
	     * @param {Array} [holders] The `partials` placeholder indexes.
	     * @param {Array} [argPos] The argument positions of the new function.
	     * @param {number} [ary] The arity cap of `func`.
	     * @param {number} [arity] The arity of `func`.
	     * @returns {Function} Returns the new wrapped function.
	     */
	    function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {
	      var isCurry = bitmask & WRAP_CURRY_FLAG,
	          newHolders = isCurry ? holders : undefined$1,
	          newHoldersRight = isCurry ? undefined$1 : holders,
	          newPartials = isCurry ? partials : undefined$1,
	          newPartialsRight = isCurry ? undefined$1 : partials;

	      bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG);
	      bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);

	      if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {
	        bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);
	      }
	      var newData = [
	        func, bitmask, thisArg, newPartials, newHolders, newPartialsRight,
	        newHoldersRight, argPos, ary, arity
	      ];

	      var result = wrapFunc.apply(undefined$1, newData);
	      if (isLaziable(func)) {
	        setData(result, newData);
	      }
	      result.placeholder = placeholder;
	      return setWrapToString(result, func, bitmask);
	    }

	    /**
	     * Creates a function like `_.round`.
	     *
	     * @private
	     * @param {string} methodName The name of the `Math` method to use when rounding.
	     * @returns {Function} Returns the new round function.
	     */
	    function createRound(methodName) {
	      var func = Math[methodName];
	      return function(number, precision) {
	        number = toNumber(number);
	        precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);
	        if (precision) {
	          // Shift with exponential notation to avoid floating-point issues.
	          // See [MDN](https://mdn.io/round#Examples) for more details.
	          var pair = (toString(number) + 'e').split('e'),
	              value = func(pair[0] + 'e' + (+pair[1] + precision));

	          pair = (toString(value) + 'e').split('e');
	          return +(pair[0] + 'e' + (+pair[1] - precision));
	        }
	        return func(number);
	      };
	    }

	    /**
	     * Creates a set object of `values`.
	     *
	     * @private
	     * @param {Array} values The values to add to the set.
	     * @returns {Object} Returns the new set.
	     */
	    var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) {
	      return new Set(values);
	    };

	    /**
	     * Creates a `_.toPairs` or `_.toPairsIn` function.
	     *
	     * @private
	     * @param {Function} keysFunc The function to get the keys of a given object.
	     * @returns {Function} Returns the new pairs function.
	     */
	    function createToPairs(keysFunc) {
	      return function(object) {
	        var tag = getTag(object);
	        if (tag == mapTag) {
	          return mapToArray(object);
	        }
	        if (tag == setTag) {
	          return setToPairs(object);
	        }
	        return baseToPairs(object, keysFunc(object));
	      };
	    }

	    /**
	     * Creates a function that either curries or invokes `func` with optional
	     * `this` binding and partially applied arguments.
	     *
	     * @private
	     * @param {Function|string} func The function or method name to wrap.
	     * @param {number} bitmask The bitmask flags.
	     *    1 - `_.bind`
	     *    2 - `_.bindKey`
	     *    4 - `_.curry` or `_.curryRight` of a bound function
	     *    8 - `_.curry`
	     *   16 - `_.curryRight`
	     *   32 - `_.partial`
	     *   64 - `_.partialRight`
	     *  128 - `_.rearg`
	     *  256 - `_.ary`
	     *  512 - `_.flip`
	     * @param {*} [thisArg] The `this` binding of `func`.
	     * @param {Array} [partials] The arguments to be partially applied.
	     * @param {Array} [holders] The `partials` placeholder indexes.
	     * @param {Array} [argPos] The argument positions of the new function.
	     * @param {number} [ary] The arity cap of `func`.
	     * @param {number} [arity] The arity of `func`.
	     * @returns {Function} Returns the new wrapped function.
	     */
	    function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
	      var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;
	      if (!isBindKey && typeof func != 'function') {
	        throw new TypeError(FUNC_ERROR_TEXT);
	      }
	      var length = partials ? partials.length : 0;
	      if (!length) {
	        bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);
	        partials = holders = undefined$1;
	      }
	      ary = ary === undefined$1 ? ary : nativeMax(toInteger(ary), 0);
	      arity = arity === undefined$1 ? arity : toInteger(arity);
	      length -= holders ? holders.length : 0;

	      if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {
	        var partialsRight = partials,
	            holdersRight = holders;

	        partials = holders = undefined$1;
	      }
	      var data = isBindKey ? undefined$1 : getData(func);

	      var newData = [
	        func, bitmask, thisArg, partials, holders, partialsRight, holdersRight,
	        argPos, ary, arity
	      ];

	      if (data) {
	        mergeData(newData, data);
	      }
	      func = newData[0];
	      bitmask = newData[1];
	      thisArg = newData[2];
	      partials = newData[3];
	      holders = newData[4];
	      arity = newData[9] = newData[9] === undefined$1
	        ? (isBindKey ? 0 : func.length)
	        : nativeMax(newData[9] - length, 0);

	      if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {
	        bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);
	      }
	      if (!bitmask || bitmask == WRAP_BIND_FLAG) {
	        var result = createBind(func, bitmask, thisArg);
	      } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {
	        result = createCurry(func, bitmask, arity);
	      } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {
	        result = createPartial(func, bitmask, thisArg, partials);
	      } else {
	        result = createHybrid.apply(undefined$1, newData);
	      }
	      var setter = data ? baseSetData : setData;
	      return setWrapToString(setter(result, newData), func, bitmask);
	    }

	    /**
	     * Used by `_.defaults` to customize its `_.assignIn` use to assign properties
	     * of source objects to the destination object for all destination properties
	     * that resolve to `undefined`.
	     *
	     * @private
	     * @param {*} objValue The destination value.
	     * @param {*} srcValue The source value.
	     * @param {string} key The key of the property to assign.
	     * @param {Object} object The parent object of `objValue`.
	     * @returns {*} Returns the value to assign.
	     */
	    function customDefaultsAssignIn(objValue, srcValue, key, object) {
	      if (objValue === undefined$1 ||
	          (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {
	        return srcValue;
	      }
	      return objValue;
	    }

	    /**
	     * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source
	     * objects into destination objects that are passed thru.
	     *
	     * @private
	     * @param {*} objValue The destination value.
	     * @param {*} srcValue The source value.
	     * @param {string} key The key of the property to merge.
	     * @param {Object} object The parent object of `objValue`.
	     * @param {Object} source The parent object of `srcValue`.
	     * @param {Object} [stack] Tracks traversed source values and their merged
	     *  counterparts.
	     * @returns {*} Returns the value to assign.
	     */
	    function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {
	      if (isObject(objValue) && isObject(srcValue)) {
	        // Recursively merge objects and arrays (susceptible to call stack limits).
	        stack.set(srcValue, objValue);
	        baseMerge(objValue, srcValue, undefined$1, customDefaultsMerge, stack);
	        stack['delete'](srcValue);
	      }
	      return objValue;
	    }

	    /**
	     * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain
	     * objects.
	     *
	     * @private
	     * @param {*} value The value to inspect.
	     * @param {string} key The key of the property to inspect.
	     * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.
	     */
	    function customOmitClone(value) {
	      return isPlainObject(value) ? undefined$1 : value;
	    }

	    /**
	     * A specialized version of `baseIsEqualDeep` for arrays with support for
	     * partial deep comparisons.
	     *
	     * @private
	     * @param {Array} array The array to compare.
	     * @param {Array} other The other array to compare.
	     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
	     * @param {Function} customizer The function to customize comparisons.
	     * @param {Function} equalFunc The function to determine equivalents of values.
	     * @param {Object} stack Tracks traversed `array` and `other` objects.
	     * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
	     */
	    function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {
	      var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
	          arrLength = array.length,
	          othLength = other.length;

	      if (arrLength != othLength && !(isPartial && othLength > arrLength)) {
	        return false;
	      }
	      // Assume cyclic values are equal.
	      var stacked = stack.get(array);
	      if (stacked && stack.get(other)) {
	        return stacked == other;
	      }
	      var index = -1,
	          result = true,
	          seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined$1;

	      stack.set(array, other);
	      stack.set(other, array);

	      // Ignore non-index properties.
	      while (++index < arrLength) {
	        var arrValue = array[index],
	            othValue = other[index];

	        if (customizer) {
	          var compared = isPartial
	            ? customizer(othValue, arrValue, index, other, array, stack)
	            : customizer(arrValue, othValue, index, array, other, stack);
	        }
	        if (compared !== undefined$1) {
	          if (compared) {
	            continue;
	          }
	          result = false;
	          break;
	        }
	        // Recursively compare arrays (susceptible to call stack limits).
	        if (seen) {
	          if (!arraySome(other, function(othValue, othIndex) {
	                if (!cacheHas(seen, othIndex) &&
	                    (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
	                  return seen.push(othIndex);
	                }
	              })) {
	            result = false;
	            break;
	          }
	        } else if (!(
	              arrValue === othValue ||
	                equalFunc(arrValue, othValue, bitmask, customizer, stack)
	            )) {
	          result = false;
	          break;
	        }
	      }
	      stack['delete'](array);
	      stack['delete'](other);
	      return result;
	    }

	    /**
	     * A specialized version of `baseIsEqualDeep` for comparing objects of
	     * the same `toStringTag`.
	     *
	     * **Note:** This function only supports comparing values with tags of
	     * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
	     *
	     * @private
	     * @param {Object} object The object to compare.
	     * @param {Object} other The other object to compare.
	     * @param {string} tag The `toStringTag` of the objects to compare.
	     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
	     * @param {Function} customizer The function to customize comparisons.
	     * @param {Function} equalFunc The function to determine equivalents of values.
	     * @param {Object} stack Tracks traversed `object` and `other` objects.
	     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
	     */
	    function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {
	      switch (tag) {
	        case dataViewTag:
	          if ((object.byteLength != other.byteLength) ||
	              (object.byteOffset != other.byteOffset)) {
	            return false;
	          }
	          object = object.buffer;
	          other = other.buffer;

	        case arrayBufferTag:
	          if ((object.byteLength != other.byteLength) ||
	              !equalFunc(new Uint8Array(object), new Uint8Array(other))) {
	            return false;
	          }
	          return true;

	        case boolTag:
	        case dateTag:
	        case numberTag:
	          // Coerce booleans to `1` or `0` and dates to milliseconds.
	          // Invalid dates are coerced to `NaN`.
	          return eq(+object, +other);

	        case errorTag:
	          return object.name == other.name && object.message == other.message;

	        case regexpTag:
	        case stringTag:
	          // Coerce regexes to strings and treat strings, primitives and objects,
	          // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring
	          // for more details.
	          return object == (other + '');

	        case mapTag:
	          var convert = mapToArray;

	        case setTag:
	          var isPartial = bitmask & COMPARE_PARTIAL_FLAG;
	          convert || (convert = setToArray);

	          if (object.size != other.size && !isPartial) {
	            return false;
	          }
	          // Assume cyclic values are equal.
	          var stacked = stack.get(object);
	          if (stacked) {
	            return stacked == other;
	          }
	          bitmask |= COMPARE_UNORDERED_FLAG;

	          // Recursively compare objects (susceptible to call stack limits).
	          stack.set(object, other);
	          var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);
	          stack['delete'](object);
	          return result;

	        case symbolTag:
	          if (symbolValueOf) {
	            return symbolValueOf.call(object) == symbolValueOf.call(other);
	          }
	      }
	      return false;
	    }

	    /**
	     * A specialized version of `baseIsEqualDeep` for objects with support for
	     * partial deep comparisons.
	     *
	     * @private
	     * @param {Object} object The object to compare.
	     * @param {Object} other The other object to compare.
	     * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
	     * @param {Function} customizer The function to customize comparisons.
	     * @param {Function} equalFunc The function to determine equivalents of values.
	     * @param {Object} stack Tracks traversed `object` and `other` objects.
	     * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
	     */
	    function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
	      var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
	          objProps = getAllKeys(object),
	          objLength = objProps.length,
	          othProps = getAllKeys(other),
	          othLength = othProps.length;

	      if (objLength != othLength && !isPartial) {
	        return false;
	      }
	      var index = objLength;
	      while (index--) {
	        var key = objProps[index];
	        if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {
	          return false;
	        }
	      }
	      // Assume cyclic values are equal.
	      var stacked = stack.get(object);
	      if (stacked && stack.get(other)) {
	        return stacked == other;
	      }
	      var result = true;
	      stack.set(object, other);
	      stack.set(other, object);

	      var skipCtor = isPartial;
	      while (++index < objLength) {
	        key = objProps[index];
	        var objValue = object[key],
	            othValue = other[key];

	        if (customizer) {
	          var compared = isPartial
	            ? customizer(othValue, objValue, key, other, object, stack)
	            : customizer(objValue, othValue, key, object, other, stack);
	        }
	        // Recursively compare objects (susceptible to call stack limits).
	        if (!(compared === undefined$1
	              ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))
	              : compared
	            )) {
	          result = false;
	          break;
	        }
	        skipCtor || (skipCtor = key == 'constructor');
	      }
	      if (result && !skipCtor) {
	        var objCtor = object.constructor,
	            othCtor = other.constructor;

	        // Non `Object` object instances with different constructors are not equal.
	        if (objCtor != othCtor &&
	            ('constructor' in object && 'constructor' in other) &&
	            !(typeof objCtor == 'function' && objCtor instanceof objCtor &&
	              typeof othCtor == 'function' && othCtor instanceof othCtor)) {
	          result = false;
	        }
	      }
	      stack['delete'](object);
	      stack['delete'](other);
	      return result;
	    }

	    /**
	     * A specialized version of `baseRest` which flattens the rest array.
	     *
	     * @private
	     * @param {Function} func The function to apply a rest parameter to.
	     * @returns {Function} Returns the new function.
	     */
	    function flatRest(func) {
	      return setToString(overRest(func, undefined$1, flatten), func + '');
	    }

	    /**
	     * Creates an array of own enumerable property names and symbols of `object`.
	     *
	     * @private
	     * @param {Object} object The object to query.
	     * @returns {Array} Returns the array of property names and symbols.
	     */
	    function getAllKeys(object) {
	      return baseGetAllKeys(object, keys, getSymbols);
	    }

	    /**
	     * Creates an array of own and inherited enumerable property names and
	     * symbols of `object`.
	     *
	     * @private
	     * @param {Object} object The object to query.
	     * @returns {Array} Returns the array of property names and symbols.
	     */
	    function getAllKeysIn(object) {
	      return baseGetAllKeys(object, keysIn, getSymbolsIn);
	    }

	    /**
	     * Gets metadata for `func`.
	     *
	     * @private
	     * @param {Function} func The function to query.
	     * @returns {*} Returns the metadata for `func`.
	     */
	    var getData = !metaMap ? noop : function(func) {
	      return metaMap.get(func);
	    };

	    /**
	     * Gets the name of `func`.
	     *
	     * @private
	     * @param {Function} func The function to query.
	     * @returns {string} Returns the function name.
	     */
	    function getFuncName(func) {
	      var result = (func.name + ''),
	          array = realNames[result],
	          length = hasOwnProperty.call(realNames, result) ? array.length : 0;

	      while (length--) {
	        var data = array[length],
	            otherFunc = data.func;
	        if (otherFunc == null || otherFunc == func) {
	          return data.name;
	        }
	      }
	      return result;
	    }

	    /**
	     * Gets the argument placeholder value for `func`.
	     *
	     * @private
	     * @param {Function} func The function to inspect.
	     * @returns {*} Returns the placeholder value.
	     */
	    function getHolder(func) {
	      var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func;
	      return object.placeholder;
	    }

	    /**
	     * Gets the appropriate "iteratee" function. If `_.iteratee` is customized,
	     * this function returns the custom method, otherwise it returns `baseIteratee`.
	     * If arguments are provided, the chosen function is invoked with them and
	     * its result is returned.
	     *
	     * @private
	     * @param {*} [value] The value to convert to an iteratee.
	     * @param {number} [arity] The arity of the created iteratee.
	     * @returns {Function} Returns the chosen function or its result.
	     */
	    function getIteratee() {
	      var result = lodash.iteratee || iteratee;
	      result = result === iteratee ? baseIteratee : result;
	      return arguments.length ? result(arguments[0], arguments[1]) : result;
	    }

	    /**
	     * Gets the data for `map`.
	     *
	     * @private
	     * @param {Object} map The map to query.
	     * @param {string} key The reference key.
	     * @returns {*} Returns the map data.
	     */
	    function getMapData(map, key) {
	      var data = map.__data__;
	      return isKeyable(key)
	        ? data[typeof key == 'string' ? 'string' : 'hash']
	        : data.map;
	    }

	    /**
	     * Gets the property names, values, and compare flags of `object`.
	     *
	     * @private
	     * @param {Object} object The object to query.
	     * @returns {Array} Returns the match data of `object`.
	     */
	    function getMatchData(object) {
	      var result = keys(object),
	          length = result.length;

	      while (length--) {
	        var key = result[length],
	            value = object[key];

	        result[length] = [key, value, isStrictComparable(value)];
	      }
	      return result;
	    }

	    /**
	     * Gets the native function at `key` of `object`.
	     *
	     * @private
	     * @param {Object} object The object to query.
	     * @param {string} key The key of the method to get.
	     * @returns {*} Returns the function if it's native, else `undefined`.
	     */
	    function getNative(object, key) {
	      var value = getValue(object, key);
	      return baseIsNative(value) ? value : undefined$1;
	    }

	    /**
	     * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.
	     *
	     * @private
	     * @param {*} value The value to query.
	     * @returns {string} Returns the raw `toStringTag`.
	     */
	    function getRawTag(value) {
	      var isOwn = hasOwnProperty.call(value, symToStringTag),
	          tag = value[symToStringTag];

	      try {
	        value[symToStringTag] = undefined$1;
	        var unmasked = true;
	      } catch (e) {}

	      var result = nativeObjectToString.call(value);
	      if (unmasked) {
	        if (isOwn) {
	          value[symToStringTag] = tag;
	        } else {
	          delete value[symToStringTag];
	        }
	      }
	      return result;
	    }

	    /**
	     * Creates an array of the own enumerable symbols of `object`.
	     *
	     * @private
	     * @param {Object} object The object to query.
	     * @returns {Array} Returns the array of symbols.
	     */
	    var getSymbols = !nativeGetSymbols ? stubArray : function(object) {
	      if (object == null) {
	        return [];
	      }
	      object = Object(object);
	      return arrayFilter(nativeGetSymbols(object), function(symbol) {
	        return propertyIsEnumerable.call(object, symbol);
	      });
	    };

	    /**
	     * Creates an array of the own and inherited enumerable symbols of `object`.
	     *
	     * @private
	     * @param {Object} object The object to query.
	     * @returns {Array} Returns the array of symbols.
	     */
	    var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) {
	      var result = [];
	      while (object) {
	        arrayPush(result, getSymbols(object));
	        object = getPrototype(object);
	      }
	      return result;
	    };

	    /**
	     * Gets the `toStringTag` of `value`.
	     *
	     * @private
	     * @param {*} value The value to query.
	     * @returns {string} Returns the `toStringTag`.
	     */
	    var getTag = baseGetTag;

	    // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.
	    if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||
	        (Map && getTag(new Map) != mapTag) ||
	        (Promise && getTag(Promise.resolve()) != promiseTag) ||
	        (Set && getTag(new Set) != setTag) ||
	        (WeakMap && getTag(new WeakMap) != weakMapTag)) {
	      getTag = function(value) {
	        var result = baseGetTag(value),
	            Ctor = result == objectTag ? value.constructor : undefined$1,
	            ctorString = Ctor ? toSource(Ctor) : '';

	        if (ctorString) {
	          switch (ctorString) {
	            case dataViewCtorString: return dataViewTag;
	            case mapCtorString: return mapTag;
	            case promiseCtorString: return promiseTag;
	            case setCtorString: return setTag;
	            case weakMapCtorString: return weakMapTag;
	          }
	        }
	        return result;
	      };
	    }

	    /**
	     * Gets the view, applying any `transforms` to the `start` and `end` positions.
	     *
	     * @private
	     * @param {number} start The start of the view.
	     * @param {number} end The end of the view.
	     * @param {Array} transforms The transformations to apply to the view.
	     * @returns {Object} Returns an object containing the `start` and `end`
	     *  positions of the view.
	     */
	    function getView(start, end, transforms) {
	      var index = -1,
	          length = transforms.length;

	      while (++index < length) {
	        var data = transforms[index],
	            size = data.size;

	        switch (data.type) {
	          case 'drop':      start += size; break;
	          case 'dropRight': end -= size; break;
	          case 'take':      end = nativeMin(end, start + size); break;
	          case 'takeRight': start = nativeMax(start, end - size); break;
	        }
	      }
	      return { 'start': start, 'end': end };
	    }

	    /**
	     * Extracts wrapper details from the `source` body comment.
	     *
	     * @private
	     * @param {string} source The source to inspect.
	     * @returns {Array} Returns the wrapper details.
	     */
	    function getWrapDetails(source) {
	      var match = source.match(reWrapDetails);
	      return match ? match[1].split(reSplitDetails) : [];
	    }

	    /**
	     * Checks if `path` exists on `object`.
	     *
	     * @private
	     * @param {Object} object The object to query.
	     * @param {Array|string} path The path to check.
	     * @param {Function} hasFunc The function to check properties.
	     * @returns {boolean} Returns `true` if `path` exists, else `false`.
	     */
	    function hasPath(object, path, hasFunc) {
	      path = castPath(path, object);

	      var index = -1,
	          length = path.length,
	          result = false;

	      while (++index < length) {
	        var key = toKey(path[index]);
	        if (!(result = object != null && hasFunc(object, key))) {
	          break;
	        }
	        object = object[key];
	      }
	      if (result || ++index != length) {
	        return result;
	      }
	      length = object == null ? 0 : object.length;
	      return !!length && isLength(length) && isIndex(key, length) &&
	        (isArray(object) || isArguments(object));
	    }

	    /**
	     * Initializes an array clone.
	     *
	     * @private
	     * @param {Array} array The array to clone.
	     * @returns {Array} Returns the initialized clone.
	     */
	    function initCloneArray(array) {
	      var length = array.length,
	          result = new array.constructor(length);

	      // Add properties assigned by `RegExp#exec`.
	      if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {
	        result.index = array.index;
	        result.input = array.input;
	      }
	      return result;
	    }

	    /**
	     * Initializes an object clone.
	     *
	     * @private
	     * @param {Object} object The object to clone.
	     * @returns {Object} Returns the initialized clone.
	     */
	    function initCloneObject(object) {
	      return (typeof object.constructor == 'function' && !isPrototype(object))
	        ? baseCreate(getPrototype(object))
	        : {};
	    }

	    /**
	     * Initializes an object clone based on its `toStringTag`.
	     *
	     * **Note:** This function only supports cloning values with tags of
	     * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.
	     *
	     * @private
	     * @param {Object} object The object to clone.
	     * @param {string} tag The `toStringTag` of the object to clone.
	     * @param {boolean} [isDeep] Specify a deep clone.
	     * @returns {Object} Returns the initialized clone.
	     */
	    function initCloneByTag(object, tag, isDeep) {
	      var Ctor = object.constructor;
	      switch (tag) {
	        case arrayBufferTag:
	          return cloneArrayBuffer(object);

	        case boolTag:
	        case dateTag:
	          return new Ctor(+object);

	        case dataViewTag:
	          return cloneDataView(object, isDeep);

	        case float32Tag: case float64Tag:
	        case int8Tag: case int16Tag: case int32Tag:
	        case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:
	          return cloneTypedArray(object, isDeep);

	        case mapTag:
	          return new Ctor;

	        case numberTag:
	        case stringTag:
	          return new Ctor(object);

	        case regexpTag:
	          return cloneRegExp(object);

	        case setTag:
	          return new Ctor;

	        case symbolTag:
	          return cloneSymbol(object);
	      }
	    }

	    /**
	     * Inserts wrapper `details` in a comment at the top of the `source` body.
	     *
	     * @private
	     * @param {string} source The source to modify.
	     * @returns {Array} details The details to insert.
	     * @returns {string} Returns the modified source.
	     */
	    function insertWrapDetails(source, details) {
	      var length = details.length;
	      if (!length) {
	        return source;
	      }
	      var lastIndex = length - 1;
	      details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];
	      details = details.join(length > 2 ? ', ' : ' ');
	      return source.replace(reWrapComment, '{\n/* [wrapped with ' + details + '] */\n');
	    }

	    /**
	     * Checks if `value` is a flattenable `arguments` object or array.
	     *
	     * @private
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.
	     */
	    function isFlattenable(value) {
	      return isArray(value) || isArguments(value) ||
	        !!(spreadableSymbol && value && value[spreadableSymbol]);
	    }

	    /**
	     * Checks if `value` is a valid array-like index.
	     *
	     * @private
	     * @param {*} value The value to check.
	     * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
	     * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
	     */
	    function isIndex(value, length) {
	      var type = typeof value;
	      length = length == null ? MAX_SAFE_INTEGER : length;

	      return !!length &&
	        (type == 'number' ||
	          (type != 'symbol' && reIsUint.test(value))) &&
	            (value > -1 && value % 1 == 0 && value < length);
	    }

	    /**
	     * Checks if the given arguments are from an iteratee call.
	     *
	     * @private
	     * @param {*} value The potential iteratee value argument.
	     * @param {*} index The potential iteratee index or key argument.
	     * @param {*} object The potential iteratee object argument.
	     * @returns {boolean} Returns `true` if the arguments are from an iteratee call,
	     *  else `false`.
	     */
	    function isIterateeCall(value, index, object) {
	      if (!isObject(object)) {
	        return false;
	      }
	      var type = typeof index;
	      if (type == 'number'
	            ? (isArrayLike(object) && isIndex(index, object.length))
	            : (type == 'string' && index in object)
	          ) {
	        return eq(object[index], value);
	      }
	      return false;
	    }

	    /**
	     * Checks if `value` is a property name and not a property path.
	     *
	     * @private
	     * @param {*} value The value to check.
	     * @param {Object} [object] The object to query keys on.
	     * @returns {boolean} Returns `true` if `value` is a property name, else `false`.
	     */
	    function isKey(value, object) {
	      if (isArray(value)) {
	        return false;
	      }
	      var type = typeof value;
	      if (type == 'number' || type == 'symbol' || type == 'boolean' ||
	          value == null || isSymbol(value)) {
	        return true;
	      }
	      return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||
	        (object != null && value in Object(object));
	    }

	    /**
	     * Checks if `value` is suitable for use as unique object key.
	     *
	     * @private
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is suitable, else `false`.
	     */
	    function isKeyable(value) {
	      var type = typeof value;
	      return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')
	        ? (value !== '__proto__')
	        : (value === null);
	    }

	    /**
	     * Checks if `func` has a lazy counterpart.
	     *
	     * @private
	     * @param {Function} func The function to check.
	     * @returns {boolean} Returns `true` if `func` has a lazy counterpart,
	     *  else `false`.
	     */
	    function isLaziable(func) {
	      var funcName = getFuncName(func),
	          other = lodash[funcName];

	      if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {
	        return false;
	      }
	      if (func === other) {
	        return true;
	      }
	      var data = getData(other);
	      return !!data && func === data[0];
	    }

	    /**
	     * Checks if `func` has its source masked.
	     *
	     * @private
	     * @param {Function} func The function to check.
	     * @returns {boolean} Returns `true` if `func` is masked, else `false`.
	     */
	    function isMasked(func) {
	      return !!maskSrcKey && (maskSrcKey in func);
	    }

	    /**
	     * Checks if `func` is capable of being masked.
	     *
	     * @private
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `func` is maskable, else `false`.
	     */
	    var isMaskable = coreJsData ? isFunction : stubFalse;

	    /**
	     * Checks if `value` is likely a prototype object.
	     *
	     * @private
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.
	     */
	    function isPrototype(value) {
	      var Ctor = value && value.constructor,
	          proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;

	      return value === proto;
	    }

	    /**
	     * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.
	     *
	     * @private
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` if suitable for strict
	     *  equality comparisons, else `false`.
	     */
	    function isStrictComparable(value) {
	      return value === value && !isObject(value);
	    }

	    /**
	     * A specialized version of `matchesProperty` for source values suitable
	     * for strict equality comparisons, i.e. `===`.
	     *
	     * @private
	     * @param {string} key The key of the property to get.
	     * @param {*} srcValue The value to match.
	     * @returns {Function} Returns the new spec function.
	     */
	    function matchesStrictComparable(key, srcValue) {
	      return function(object) {
	        if (object == null) {
	          return false;
	        }
	        return object[key] === srcValue &&
	          (srcValue !== undefined$1 || (key in Object(object)));
	      };
	    }

	    /**
	     * A specialized version of `_.memoize` which clears the memoized function's
	     * cache when it exceeds `MAX_MEMOIZE_SIZE`.
	     *
	     * @private
	     * @param {Function} func The function to have its output memoized.
	     * @returns {Function} Returns the new memoized function.
	     */
	    function memoizeCapped(func) {
	      var result = memoize(func, function(key) {
	        if (cache.size === MAX_MEMOIZE_SIZE) {
	          cache.clear();
	        }
	        return key;
	      });

	      var cache = result.cache;
	      return result;
	    }

	    /**
	     * Merges the function metadata of `source` into `data`.
	     *
	     * Merging metadata reduces the number of wrappers used to invoke a function.
	     * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`
	     * may be applied regardless of execution order. Methods like `_.ary` and
	     * `_.rearg` modify function arguments, making the order in which they are
	     * executed important, preventing the merging of metadata. However, we make
	     * an exception for a safe combined case where curried functions have `_.ary`
	     * and or `_.rearg` applied.
	     *
	     * @private
	     * @param {Array} data The destination metadata.
	     * @param {Array} source The source metadata.
	     * @returns {Array} Returns `data`.
	     */
	    function mergeData(data, source) {
	      var bitmask = data[1],
	          srcBitmask = source[1],
	          newBitmask = bitmask | srcBitmask,
	          isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);

	      var isCombo =
	        ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) ||
	        ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) ||
	        ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG));

	      // Exit early if metadata can't be merged.
	      if (!(isCommon || isCombo)) {
	        return data;
	      }
	      // Use source `thisArg` if available.
	      if (srcBitmask & WRAP_BIND_FLAG) {
	        data[2] = source[2];
	        // Set when currying a bound function.
	        newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;
	      }
	      // Compose partial arguments.
	      var value = source[3];
	      if (value) {
	        var partials = data[3];
	        data[3] = partials ? composeArgs(partials, value, source[4]) : value;
	        data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4];
	      }
	      // Compose partial right arguments.
	      value = source[5];
	      if (value) {
	        partials = data[5];
	        data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;
	        data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6];
	      }
	      // Use source `argPos` if available.
	      value = source[7];
	      if (value) {
	        data[7] = value;
	      }
	      // Use source `ary` if it's smaller.
	      if (srcBitmask & WRAP_ARY_FLAG) {
	        data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);
	      }
	      // Use source `arity` if one is not provided.
	      if (data[9] == null) {
	        data[9] = source[9];
	      }
	      // Use source `func` and merge bitmasks.
	      data[0] = source[0];
	      data[1] = newBitmask;

	      return data;
	    }

	    /**
	     * This function is like
	     * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
	     * except that it includes inherited enumerable properties.
	     *
	     * @private
	     * @param {Object} object The object to query.
	     * @returns {Array} Returns the array of property names.
	     */
	    function nativeKeysIn(object) {
	      var result = [];
	      if (object != null) {
	        for (var key in Object(object)) {
	          result.push(key);
	        }
	      }
	      return result;
	    }

	    /**
	     * Converts `value` to a string using `Object.prototype.toString`.
	     *
	     * @private
	     * @param {*} value The value to convert.
	     * @returns {string} Returns the converted string.
	     */
	    function objectToString(value) {
	      return nativeObjectToString.call(value);
	    }

	    /**
	     * A specialized version of `baseRest` which transforms the rest array.
	     *
	     * @private
	     * @param {Function} func The function to apply a rest parameter to.
	     * @param {number} [start=func.length-1] The start position of the rest parameter.
	     * @param {Function} transform The rest array transform.
	     * @returns {Function} Returns the new function.
	     */
	    function overRest(func, start, transform) {
	      start = nativeMax(start === undefined$1 ? (func.length - 1) : start, 0);
	      return function() {
	        var args = arguments,
	            index = -1,
	            length = nativeMax(args.length - start, 0),
	            array = Array(length);

	        while (++index < length) {
	          array[index] = args[start + index];
	        }
	        index = -1;
	        var otherArgs = Array(start + 1);
	        while (++index < start) {
	          otherArgs[index] = args[index];
	        }
	        otherArgs[start] = transform(array);
	        return apply(func, this, otherArgs);
	      };
	    }

	    /**
	     * Gets the parent value at `path` of `object`.
	     *
	     * @private
	     * @param {Object} object The object to query.
	     * @param {Array} path The path to get the parent value of.
	     * @returns {*} Returns the parent value.
	     */
	    function parent(object, path) {
	      return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));
	    }

	    /**
	     * Reorder `array` according to the specified indexes where the element at
	     * the first index is assigned as the first element, the element at
	     * the second index is assigned as the second element, and so on.
	     *
	     * @private
	     * @param {Array} array The array to reorder.
	     * @param {Array} indexes The arranged array indexes.
	     * @returns {Array} Returns `array`.
	     */
	    function reorder(array, indexes) {
	      var arrLength = array.length,
	          length = nativeMin(indexes.length, arrLength),
	          oldArray = copyArray(array);

	      while (length--) {
	        var index = indexes[length];
	        array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined$1;
	      }
	      return array;
	    }

	    /**
	     * Gets the value at `key`, unless `key` is "__proto__".
	     *
	     * @private
	     * @param {Object} object The object to query.
	     * @param {string} key The key of the property to get.
	     * @returns {*} Returns the property value.
	     */
	    function safeGet(object, key) {
	      if (key == '__proto__') {
	        return;
	      }

	      return object[key];
	    }

	    /**
	     * Sets metadata for `func`.
	     *
	     * **Note:** If this function becomes hot, i.e. is invoked a lot in a short
	     * period of time, it will trip its breaker and transition to an identity
	     * function to avoid garbage collection pauses in V8. See
	     * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)
	     * for more details.
	     *
	     * @private
	     * @param {Function} func The function to associate metadata with.
	     * @param {*} data The metadata.
	     * @returns {Function} Returns `func`.
	     */
	    var setData = shortOut(baseSetData);

	    /**
	     * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout).
	     *
	     * @private
	     * @param {Function} func The function to delay.
	     * @param {number} wait The number of milliseconds to delay invocation.
	     * @returns {number|Object} Returns the timer id or timeout object.
	     */
	    var setTimeout = ctxSetTimeout || function(func, wait) {
	      return root.setTimeout(func, wait);
	    };

	    /**
	     * Sets the `toString` method of `func` to return `string`.
	     *
	     * @private
	     * @param {Function} func The function to modify.
	     * @param {Function} string The `toString` result.
	     * @returns {Function} Returns `func`.
	     */
	    var setToString = shortOut(baseSetToString);

	    /**
	     * Sets the `toString` method of `wrapper` to mimic the source of `reference`
	     * with wrapper details in a comment at the top of the source body.
	     *
	     * @private
	     * @param {Function} wrapper The function to modify.
	     * @param {Function} reference The reference function.
	     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
	     * @returns {Function} Returns `wrapper`.
	     */
	    function setWrapToString(wrapper, reference, bitmask) {
	      var source = (reference + '');
	      return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));
	    }

	    /**
	     * Creates a function that'll short out and invoke `identity` instead
	     * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`
	     * milliseconds.
	     *
	     * @private
	     * @param {Function} func The function to restrict.
	     * @returns {Function} Returns the new shortable function.
	     */
	    function shortOut(func) {
	      var count = 0,
	          lastCalled = 0;

	      return function() {
	        var stamp = nativeNow(),
	            remaining = HOT_SPAN - (stamp - lastCalled);

	        lastCalled = stamp;
	        if (remaining > 0) {
	          if (++count >= HOT_COUNT) {
	            return arguments[0];
	          }
	        } else {
	          count = 0;
	        }
	        return func.apply(undefined$1, arguments);
	      };
	    }

	    /**
	     * A specialized version of `_.shuffle` which mutates and sets the size of `array`.
	     *
	     * @private
	     * @param {Array} array The array to shuffle.
	     * @param {number} [size=array.length] The size of `array`.
	     * @returns {Array} Returns `array`.
	     */
	    function shuffleSelf(array, size) {
	      var index = -1,
	          length = array.length,
	          lastIndex = length - 1;

	      size = size === undefined$1 ? length : size;
	      while (++index < size) {
	        var rand = baseRandom(index, lastIndex),
	            value = array[rand];

	        array[rand] = array[index];
	        array[index] = value;
	      }
	      array.length = size;
	      return array;
	    }

	    /**
	     * Converts `string` to a property path array.
	     *
	     * @private
	     * @param {string} string The string to convert.
	     * @returns {Array} Returns the property path array.
	     */
	    var stringToPath = memoizeCapped(function(string) {
	      var result = [];
	      if (string.charCodeAt(0) === 46 /* . */) {
	        result.push('');
	      }
	      string.replace(rePropName, function(match, number, quote, subString) {
	        result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));
	      });
	      return result;
	    });

	    /**
	     * Converts `value` to a string key if it's not a string or symbol.
	     *
	     * @private
	     * @param {*} value The value to inspect.
	     * @returns {string|symbol} Returns the key.
	     */
	    function toKey(value) {
	      if (typeof value == 'string' || isSymbol(value)) {
	        return value;
	      }
	      var result = (value + '');
	      return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
	    }

	    /**
	     * Converts `func` to its source code.
	     *
	     * @private
	     * @param {Function} func The function to convert.
	     * @returns {string} Returns the source code.
	     */
	    function toSource(func) {
	      if (func != null) {
	        try {
	          return funcToString.call(func);
	        } catch (e) {}
	        try {
	          return (func + '');
	        } catch (e) {}
	      }
	      return '';
	    }

	    /**
	     * Updates wrapper `details` based on `bitmask` flags.
	     *
	     * @private
	     * @returns {Array} details The details to modify.
	     * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
	     * @returns {Array} Returns `details`.
	     */
	    function updateWrapDetails(details, bitmask) {
	      arrayEach(wrapFlags, function(pair) {
	        var value = '_.' + pair[0];
	        if ((bitmask & pair[1]) && !arrayIncludes(details, value)) {
	          details.push(value);
	        }
	      });
	      return details.sort();
	    }

	    /**
	     * Creates a clone of `wrapper`.
	     *
	     * @private
	     * @param {Object} wrapper The wrapper to clone.
	     * @returns {Object} Returns the cloned wrapper.
	     */
	    function wrapperClone(wrapper) {
	      if (wrapper instanceof LazyWrapper) {
	        return wrapper.clone();
	      }
	      var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);
	      result.__actions__ = copyArray(wrapper.__actions__);
	      result.__index__  = wrapper.__index__;
	      result.__values__ = wrapper.__values__;
	      return result;
	    }

	    /*------------------------------------------------------------------------*/

	    /**
	     * Creates an array of elements split into groups the length of `size`.
	     * If `array` can't be split evenly, the final chunk will be the remaining
	     * elements.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Array
	     * @param {Array} array The array to process.
	     * @param {number} [size=1] The length of each chunk
	     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
	     * @returns {Array} Returns the new array of chunks.
	     * @example
	     *
	     * _.chunk(['a', 'b', 'c', 'd'], 2);
	     * // => [['a', 'b'], ['c', 'd']]
	     *
	     * _.chunk(['a', 'b', 'c', 'd'], 3);
	     * // => [['a', 'b', 'c'], ['d']]
	     */
	    function chunk(array, size, guard) {
	      if ((guard ? isIterateeCall(array, size, guard) : size === undefined$1)) {
	        size = 1;
	      } else {
	        size = nativeMax(toInteger(size), 0);
	      }
	      var length = array == null ? 0 : array.length;
	      if (!length || size < 1) {
	        return [];
	      }
	      var index = 0,
	          resIndex = 0,
	          result = Array(nativeCeil(length / size));

	      while (index < length) {
	        result[resIndex++] = baseSlice(array, index, (index += size));
	      }
	      return result;
	    }

	    /**
	     * Creates an array with all falsey values removed. The values `false`, `null`,
	     * `0`, `""`, `undefined`, and `NaN` are falsey.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Array
	     * @param {Array} array The array to compact.
	     * @returns {Array} Returns the new array of filtered values.
	     * @example
	     *
	     * _.compact([0, 1, false, 2, '', 3]);
	     * // => [1, 2, 3]
	     */
	    function compact(array) {
	      var index = -1,
	          length = array == null ? 0 : array.length,
	          resIndex = 0,
	          result = [];

	      while (++index < length) {
	        var value = array[index];
	        if (value) {
	          result[resIndex++] = value;
	        }
	      }
	      return result;
	    }

	    /**
	     * Creates a new array concatenating `array` with any additional arrays
	     * and/or values.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {Array} array The array to concatenate.
	     * @param {...*} [values] The values to concatenate.
	     * @returns {Array} Returns the new concatenated array.
	     * @example
	     *
	     * var array = [1];
	     * var other = _.concat(array, 2, [3], [[4]]);
	     *
	     * console.log(other);
	     * // => [1, 2, 3, [4]]
	     *
	     * console.log(array);
	     * // => [1]
	     */
	    function concat() {
	      var length = arguments.length;
	      if (!length) {
	        return [];
	      }
	      var args = Array(length - 1),
	          array = arguments[0],
	          index = length;

	      while (index--) {
	        args[index - 1] = arguments[index];
	      }
	      return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));
	    }

	    /**
	     * Creates an array of `array` values not included in the other given arrays
	     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
	     * for equality comparisons. The order and references of result values are
	     * determined by the first array.
	     *
	     * **Note:** Unlike `_.pullAll`, this method returns a new array.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Array
	     * @param {Array} array The array to inspect.
	     * @param {...Array} [values] The values to exclude.
	     * @returns {Array} Returns the new array of filtered values.
	     * @see _.without, _.xor
	     * @example
	     *
	     * _.difference([2, 1], [2, 3]);
	     * // => [1]
	     */
	    var difference = baseRest(function(array, values) {
	      return isArrayLikeObject(array)
	        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true))
	        : [];
	    });

	    /**
	     * This method is like `_.difference` except that it accepts `iteratee` which
	     * is invoked for each element of `array` and `values` to generate the criterion
	     * by which they're compared. The order and references of result values are
	     * determined by the first array. The iteratee is invoked with one argument:
	     * (value).
	     *
	     * **Note:** Unlike `_.pullAllBy`, this method returns a new array.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {Array} array The array to inspect.
	     * @param {...Array} [values] The values to exclude.
	     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
	     * @returns {Array} Returns the new array of filtered values.
	     * @example
	     *
	     * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);
	     * // => [1.2]
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');
	     * // => [{ 'x': 2 }]
	     */
	    var differenceBy = baseRest(function(array, values) {
	      var iteratee = last(values);
	      if (isArrayLikeObject(iteratee)) {
	        iteratee = undefined$1;
	      }
	      return isArrayLikeObject(array)
	        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2))
	        : [];
	    });

	    /**
	     * This method is like `_.difference` except that it accepts `comparator`
	     * which is invoked to compare elements of `array` to `values`. The order and
	     * references of result values are determined by the first array. The comparator
	     * is invoked with two arguments: (arrVal, othVal).
	     *
	     * **Note:** Unlike `_.pullAllWith`, this method returns a new array.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {Array} array The array to inspect.
	     * @param {...Array} [values] The values to exclude.
	     * @param {Function} [comparator] The comparator invoked per element.
	     * @returns {Array} Returns the new array of filtered values.
	     * @example
	     *
	     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
	     *
	     * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);
	     * // => [{ 'x': 2, 'y': 1 }]
	     */
	    var differenceWith = baseRest(function(array, values) {
	      var comparator = last(values);
	      if (isArrayLikeObject(comparator)) {
	        comparator = undefined$1;
	      }
	      return isArrayLikeObject(array)
	        ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined$1, comparator)
	        : [];
	    });

	    /**
	     * Creates a slice of `array` with `n` elements dropped from the beginning.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.5.0
	     * @category Array
	     * @param {Array} array The array to query.
	     * @param {number} [n=1] The number of elements to drop.
	     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
	     * @returns {Array} Returns the slice of `array`.
	     * @example
	     *
	     * _.drop([1, 2, 3]);
	     * // => [2, 3]
	     *
	     * _.drop([1, 2, 3], 2);
	     * // => [3]
	     *
	     * _.drop([1, 2, 3], 5);
	     * // => []
	     *
	     * _.drop([1, 2, 3], 0);
	     * // => [1, 2, 3]
	     */
	    function drop(array, n, guard) {
	      var length = array == null ? 0 : array.length;
	      if (!length) {
	        return [];
	      }
	      n = (guard || n === undefined$1) ? 1 : toInteger(n);
	      return baseSlice(array, n < 0 ? 0 : n, length);
	    }

	    /**
	     * Creates a slice of `array` with `n` elements dropped from the end.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Array
	     * @param {Array} array The array to query.
	     * @param {number} [n=1] The number of elements to drop.
	     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
	     * @returns {Array} Returns the slice of `array`.
	     * @example
	     *
	     * _.dropRight([1, 2, 3]);
	     * // => [1, 2]
	     *
	     * _.dropRight([1, 2, 3], 2);
	     * // => [1]
	     *
	     * _.dropRight([1, 2, 3], 5);
	     * // => []
	     *
	     * _.dropRight([1, 2, 3], 0);
	     * // => [1, 2, 3]
	     */
	    function dropRight(array, n, guard) {
	      var length = array == null ? 0 : array.length;
	      if (!length) {
	        return [];
	      }
	      n = (guard || n === undefined$1) ? 1 : toInteger(n);
	      n = length - n;
	      return baseSlice(array, 0, n < 0 ? 0 : n);
	    }

	    /**
	     * Creates a slice of `array` excluding elements dropped from the end.
	     * Elements are dropped until `predicate` returns falsey. The predicate is
	     * invoked with three arguments: (value, index, array).
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Array
	     * @param {Array} array The array to query.
	     * @param {Function} [predicate=_.identity] The function invoked per iteration.
	     * @returns {Array} Returns the slice of `array`.
	     * @example
	     *
	     * var users = [
	     *   { 'user': 'barney',  'active': true },
	     *   { 'user': 'fred',    'active': false },
	     *   { 'user': 'pebbles', 'active': false }
	     * ];
	     *
	     * _.dropRightWhile(users, function(o) { return !o.active; });
	     * // => objects for ['barney']
	     *
	     * // The `_.matches` iteratee shorthand.
	     * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });
	     * // => objects for ['barney', 'fred']
	     *
	     * // The `_.matchesProperty` iteratee shorthand.
	     * _.dropRightWhile(users, ['active', false]);
	     * // => objects for ['barney']
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.dropRightWhile(users, 'active');
	     * // => objects for ['barney', 'fred', 'pebbles']
	     */
	    function dropRightWhile(array, predicate) {
	      return (array && array.length)
	        ? baseWhile(array, getIteratee(predicate, 3), true, true)
	        : [];
	    }

	    /**
	     * Creates a slice of `array` excluding elements dropped from the beginning.
	     * Elements are dropped until `predicate` returns falsey. The predicate is
	     * invoked with three arguments: (value, index, array).
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Array
	     * @param {Array} array The array to query.
	     * @param {Function} [predicate=_.identity] The function invoked per iteration.
	     * @returns {Array} Returns the slice of `array`.
	     * @example
	     *
	     * var users = [
	     *   { 'user': 'barney',  'active': false },
	     *   { 'user': 'fred',    'active': false },
	     *   { 'user': 'pebbles', 'active': true }
	     * ];
	     *
	     * _.dropWhile(users, function(o) { return !o.active; });
	     * // => objects for ['pebbles']
	     *
	     * // The `_.matches` iteratee shorthand.
	     * _.dropWhile(users, { 'user': 'barney', 'active': false });
	     * // => objects for ['fred', 'pebbles']
	     *
	     * // The `_.matchesProperty` iteratee shorthand.
	     * _.dropWhile(users, ['active', false]);
	     * // => objects for ['pebbles']
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.dropWhile(users, 'active');
	     * // => objects for ['barney', 'fred', 'pebbles']
	     */
	    function dropWhile(array, predicate) {
	      return (array && array.length)
	        ? baseWhile(array, getIteratee(predicate, 3), true)
	        : [];
	    }

	    /**
	     * Fills elements of `array` with `value` from `start` up to, but not
	     * including, `end`.
	     *
	     * **Note:** This method mutates `array`.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.2.0
	     * @category Array
	     * @param {Array} array The array to fill.
	     * @param {*} value The value to fill `array` with.
	     * @param {number} [start=0] The start position.
	     * @param {number} [end=array.length] The end position.
	     * @returns {Array} Returns `array`.
	     * @example
	     *
	     * var array = [1, 2, 3];
	     *
	     * _.fill(array, 'a');
	     * console.log(array);
	     * // => ['a', 'a', 'a']
	     *
	     * _.fill(Array(3), 2);
	     * // => [2, 2, 2]
	     *
	     * _.fill([4, 6, 8, 10], '*', 1, 3);
	     * // => [4, '*', '*', 10]
	     */
	    function fill(array, value, start, end) {
	      var length = array == null ? 0 : array.length;
	      if (!length) {
	        return [];
	      }
	      if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {
	        start = 0;
	        end = length;
	      }
	      return baseFill(array, value, start, end);
	    }

	    /**
	     * This method is like `_.find` except that it returns the index of the first
	     * element `predicate` returns truthy for instead of the element itself.
	     *
	     * @static
	     * @memberOf _
	     * @since 1.1.0
	     * @category Array
	     * @param {Array} array The array to inspect.
	     * @param {Function} [predicate=_.identity] The function invoked per iteration.
	     * @param {number} [fromIndex=0] The index to search from.
	     * @returns {number} Returns the index of the found element, else `-1`.
	     * @example
	     *
	     * var users = [
	     *   { 'user': 'barney',  'active': false },
	     *   { 'user': 'fred',    'active': false },
	     *   { 'user': 'pebbles', 'active': true }
	     * ];
	     *
	     * _.findIndex(users, function(o) { return o.user == 'barney'; });
	     * // => 0
	     *
	     * // The `_.matches` iteratee shorthand.
	     * _.findIndex(users, { 'user': 'fred', 'active': false });
	     * // => 1
	     *
	     * // The `_.matchesProperty` iteratee shorthand.
	     * _.findIndex(users, ['active', false]);
	     * // => 0
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.findIndex(users, 'active');
	     * // => 2
	     */
	    function findIndex(array, predicate, fromIndex) {
	      var length = array == null ? 0 : array.length;
	      if (!length) {
	        return -1;
	      }
	      var index = fromIndex == null ? 0 : toInteger(fromIndex);
	      if (index < 0) {
	        index = nativeMax(length + index, 0);
	      }
	      return baseFindIndex(array, getIteratee(predicate, 3), index);
	    }

	    /**
	     * This method is like `_.findIndex` except that it iterates over elements
	     * of `collection` from right to left.
	     *
	     * @static
	     * @memberOf _
	     * @since 2.0.0
	     * @category Array
	     * @param {Array} array The array to inspect.
	     * @param {Function} [predicate=_.identity] The function invoked per iteration.
	     * @param {number} [fromIndex=array.length-1] The index to search from.
	     * @returns {number} Returns the index of the found element, else `-1`.
	     * @example
	     *
	     * var users = [
	     *   { 'user': 'barney',  'active': true },
	     *   { 'user': 'fred',    'active': false },
	     *   { 'user': 'pebbles', 'active': false }
	     * ];
	     *
	     * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });
	     * // => 2
	     *
	     * // The `_.matches` iteratee shorthand.
	     * _.findLastIndex(users, { 'user': 'barney', 'active': true });
	     * // => 0
	     *
	     * // The `_.matchesProperty` iteratee shorthand.
	     * _.findLastIndex(users, ['active', false]);
	     * // => 2
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.findLastIndex(users, 'active');
	     * // => 0
	     */
	    function findLastIndex(array, predicate, fromIndex) {
	      var length = array == null ? 0 : array.length;
	      if (!length) {
	        return -1;
	      }
	      var index = length - 1;
	      if (fromIndex !== undefined$1) {
	        index = toInteger(fromIndex);
	        index = fromIndex < 0
	          ? nativeMax(length + index, 0)
	          : nativeMin(index, length - 1);
	      }
	      return baseFindIndex(array, getIteratee(predicate, 3), index, true);
	    }

	    /**
	     * Flattens `array` a single level deep.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Array
	     * @param {Array} array The array to flatten.
	     * @returns {Array} Returns the new flattened array.
	     * @example
	     *
	     * _.flatten([1, [2, [3, [4]], 5]]);
	     * // => [1, 2, [3, [4]], 5]
	     */
	    function flatten(array) {
	      var length = array == null ? 0 : array.length;
	      return length ? baseFlatten(array, 1) : [];
	    }

	    /**
	     * Recursively flattens `array`.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Array
	     * @param {Array} array The array to flatten.
	     * @returns {Array} Returns the new flattened array.
	     * @example
	     *
	     * _.flattenDeep([1, [2, [3, [4]], 5]]);
	     * // => [1, 2, 3, 4, 5]
	     */
	    function flattenDeep(array) {
	      var length = array == null ? 0 : array.length;
	      return length ? baseFlatten(array, INFINITY) : [];
	    }

	    /**
	     * Recursively flatten `array` up to `depth` times.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.4.0
	     * @category Array
	     * @param {Array} array The array to flatten.
	     * @param {number} [depth=1] The maximum recursion depth.
	     * @returns {Array} Returns the new flattened array.
	     * @example
	     *
	     * var array = [1, [2, [3, [4]], 5]];
	     *
	     * _.flattenDepth(array, 1);
	     * // => [1, 2, [3, [4]], 5]
	     *
	     * _.flattenDepth(array, 2);
	     * // => [1, 2, 3, [4], 5]
	     */
	    function flattenDepth(array, depth) {
	      var length = array == null ? 0 : array.length;
	      if (!length) {
	        return [];
	      }
	      depth = depth === undefined$1 ? 1 : toInteger(depth);
	      return baseFlatten(array, depth);
	    }

	    /**
	     * The inverse of `_.toPairs`; this method returns an object composed
	     * from key-value `pairs`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {Array} pairs The key-value pairs.
	     * @returns {Object} Returns the new object.
	     * @example
	     *
	     * _.fromPairs([['a', 1], ['b', 2]]);
	     * // => { 'a': 1, 'b': 2 }
	     */
	    function fromPairs(pairs) {
	      var index = -1,
	          length = pairs == null ? 0 : pairs.length,
	          result = {};

	      while (++index < length) {
	        var pair = pairs[index];
	        result[pair[0]] = pair[1];
	      }
	      return result;
	    }

	    /**
	     * Gets the first element of `array`.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @alias first
	     * @category Array
	     * @param {Array} array The array to query.
	     * @returns {*} Returns the first element of `array`.
	     * @example
	     *
	     * _.head([1, 2, 3]);
	     * // => 1
	     *
	     * _.head([]);
	     * // => undefined
	     */
	    function head(array) {
	      return (array && array.length) ? array[0] : undefined$1;
	    }

	    /**
	     * Gets the index at which the first occurrence of `value` is found in `array`
	     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
	     * for equality comparisons. If `fromIndex` is negative, it's used as the
	     * offset from the end of `array`.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Array
	     * @param {Array} array The array to inspect.
	     * @param {*} value The value to search for.
	     * @param {number} [fromIndex=0] The index to search from.
	     * @returns {number} Returns the index of the matched value, else `-1`.
	     * @example
	     *
	     * _.indexOf([1, 2, 1, 2], 2);
	     * // => 1
	     *
	     * // Search from the `fromIndex`.
	     * _.indexOf([1, 2, 1, 2], 2, 2);
	     * // => 3
	     */
	    function indexOf(array, value, fromIndex) {
	      var length = array == null ? 0 : array.length;
	      if (!length) {
	        return -1;
	      }
	      var index = fromIndex == null ? 0 : toInteger(fromIndex);
	      if (index < 0) {
	        index = nativeMax(length + index, 0);
	      }
	      return baseIndexOf(array, value, index);
	    }

	    /**
	     * Gets all but the last element of `array`.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Array
	     * @param {Array} array The array to query.
	     * @returns {Array} Returns the slice of `array`.
	     * @example
	     *
	     * _.initial([1, 2, 3]);
	     * // => [1, 2]
	     */
	    function initial(array) {
	      var length = array == null ? 0 : array.length;
	      return length ? baseSlice(array, 0, -1) : [];
	    }

	    /**
	     * Creates an array of unique values that are included in all given arrays
	     * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
	     * for equality comparisons. The order and references of result values are
	     * determined by the first array.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Array
	     * @param {...Array} [arrays] The arrays to inspect.
	     * @returns {Array} Returns the new array of intersecting values.
	     * @example
	     *
	     * _.intersection([2, 1], [2, 3]);
	     * // => [2]
	     */
	    var intersection = baseRest(function(arrays) {
	      var mapped = arrayMap(arrays, castArrayLikeObject);
	      return (mapped.length && mapped[0] === arrays[0])
	        ? baseIntersection(mapped)
	        : [];
	    });

	    /**
	     * This method is like `_.intersection` except that it accepts `iteratee`
	     * which is invoked for each element of each `arrays` to generate the criterion
	     * by which they're compared. The order and references of result values are
	     * determined by the first array. The iteratee is invoked with one argument:
	     * (value).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {...Array} [arrays] The arrays to inspect.
	     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
	     * @returns {Array} Returns the new array of intersecting values.
	     * @example
	     *
	     * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);
	     * // => [2.1]
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
	     * // => [{ 'x': 1 }]
	     */
	    var intersectionBy = baseRest(function(arrays) {
	      var iteratee = last(arrays),
	          mapped = arrayMap(arrays, castArrayLikeObject);

	      if (iteratee === last(mapped)) {
	        iteratee = undefined$1;
	      } else {
	        mapped.pop();
	      }
	      return (mapped.length && mapped[0] === arrays[0])
	        ? baseIntersection(mapped, getIteratee(iteratee, 2))
	        : [];
	    });

	    /**
	     * This method is like `_.intersection` except that it accepts `comparator`
	     * which is invoked to compare elements of `arrays`. The order and references
	     * of result values are determined by the first array. The comparator is
	     * invoked with two arguments: (arrVal, othVal).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {...Array} [arrays] The arrays to inspect.
	     * @param {Function} [comparator] The comparator invoked per element.
	     * @returns {Array} Returns the new array of intersecting values.
	     * @example
	     *
	     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
	     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
	     *
	     * _.intersectionWith(objects, others, _.isEqual);
	     * // => [{ 'x': 1, 'y': 2 }]
	     */
	    var intersectionWith = baseRest(function(arrays) {
	      var comparator = last(arrays),
	          mapped = arrayMap(arrays, castArrayLikeObject);

	      comparator = typeof comparator == 'function' ? comparator : undefined$1;
	      if (comparator) {
	        mapped.pop();
	      }
	      return (mapped.length && mapped[0] === arrays[0])
	        ? baseIntersection(mapped, undefined$1, comparator)
	        : [];
	    });

	    /**
	     * Converts all elements in `array` into a string separated by `separator`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {Array} array The array to convert.
	     * @param {string} [separator=','] The element separator.
	     * @returns {string} Returns the joined string.
	     * @example
	     *
	     * _.join(['a', 'b', 'c'], '~');
	     * // => 'a~b~c'
	     */
	    function join(array, separator) {
	      return array == null ? '' : nativeJoin.call(array, separator);
	    }

	    /**
	     * Gets the last element of `array`.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Array
	     * @param {Array} array The array to query.
	     * @returns {*} Returns the last element of `array`.
	     * @example
	     *
	     * _.last([1, 2, 3]);
	     * // => 3
	     */
	    function last(array) {
	      var length = array == null ? 0 : array.length;
	      return length ? array[length - 1] : undefined$1;
	    }

	    /**
	     * This method is like `_.indexOf` except that it iterates over elements of
	     * `array` from right to left.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Array
	     * @param {Array} array The array to inspect.
	     * @param {*} value The value to search for.
	     * @param {number} [fromIndex=array.length-1] The index to search from.
	     * @returns {number} Returns the index of the matched value, else `-1`.
	     * @example
	     *
	     * _.lastIndexOf([1, 2, 1, 2], 2);
	     * // => 3
	     *
	     * // Search from the `fromIndex`.
	     * _.lastIndexOf([1, 2, 1, 2], 2, 2);
	     * // => 1
	     */
	    function lastIndexOf(array, value, fromIndex) {
	      var length = array == null ? 0 : array.length;
	      if (!length) {
	        return -1;
	      }
	      var index = length;
	      if (fromIndex !== undefined$1) {
	        index = toInteger(fromIndex);
	        index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);
	      }
	      return value === value
	        ? strictLastIndexOf(array, value, index)
	        : baseFindIndex(array, baseIsNaN, index, true);
	    }

	    /**
	     * Gets the element at index `n` of `array`. If `n` is negative, the nth
	     * element from the end is returned.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.11.0
	     * @category Array
	     * @param {Array} array The array to query.
	     * @param {number} [n=0] The index of the element to return.
	     * @returns {*} Returns the nth element of `array`.
	     * @example
	     *
	     * var array = ['a', 'b', 'c', 'd'];
	     *
	     * _.nth(array, 1);
	     * // => 'b'
	     *
	     * _.nth(array, -2);
	     * // => 'c';
	     */
	    function nth(array, n) {
	      return (array && array.length) ? baseNth(array, toInteger(n)) : undefined$1;
	    }

	    /**
	     * Removes all given values from `array` using
	     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
	     * for equality comparisons.
	     *
	     * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`
	     * to remove elements from an array by predicate.
	     *
	     * @static
	     * @memberOf _
	     * @since 2.0.0
	     * @category Array
	     * @param {Array} array The array to modify.
	     * @param {...*} [values] The values to remove.
	     * @returns {Array} Returns `array`.
	     * @example
	     *
	     * var array = ['a', 'b', 'c', 'a', 'b', 'c'];
	     *
	     * _.pull(array, 'a', 'c');
	     * console.log(array);
	     * // => ['b', 'b']
	     */
	    var pull = baseRest(pullAll);

	    /**
	     * This method is like `_.pull` except that it accepts an array of values to remove.
	     *
	     * **Note:** Unlike `_.difference`, this method mutates `array`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {Array} array The array to modify.
	     * @param {Array} values The values to remove.
	     * @returns {Array} Returns `array`.
	     * @example
	     *
	     * var array = ['a', 'b', 'c', 'a', 'b', 'c'];
	     *
	     * _.pullAll(array, ['a', 'c']);
	     * console.log(array);
	     * // => ['b', 'b']
	     */
	    function pullAll(array, values) {
	      return (array && array.length && values && values.length)
	        ? basePullAll(array, values)
	        : array;
	    }

	    /**
	     * This method is like `_.pullAll` except that it accepts `iteratee` which is
	     * invoked for each element of `array` and `values` to generate the criterion
	     * by which they're compared. The iteratee is invoked with one argument: (value).
	     *
	     * **Note:** Unlike `_.differenceBy`, this method mutates `array`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {Array} array The array to modify.
	     * @param {Array} values The values to remove.
	     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
	     * @returns {Array} Returns `array`.
	     * @example
	     *
	     * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];
	     *
	     * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');
	     * console.log(array);
	     * // => [{ 'x': 2 }]
	     */
	    function pullAllBy(array, values, iteratee) {
	      return (array && array.length && values && values.length)
	        ? basePullAll(array, values, getIteratee(iteratee, 2))
	        : array;
	    }

	    /**
	     * This method is like `_.pullAll` except that it accepts `comparator` which
	     * is invoked to compare elements of `array` to `values`. The comparator is
	     * invoked with two arguments: (arrVal, othVal).
	     *
	     * **Note:** Unlike `_.differenceWith`, this method mutates `array`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.6.0
	     * @category Array
	     * @param {Array} array The array to modify.
	     * @param {Array} values The values to remove.
	     * @param {Function} [comparator] The comparator invoked per element.
	     * @returns {Array} Returns `array`.
	     * @example
	     *
	     * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];
	     *
	     * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);
	     * console.log(array);
	     * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]
	     */
	    function pullAllWith(array, values, comparator) {
	      return (array && array.length && values && values.length)
	        ? basePullAll(array, values, undefined$1, comparator)
	        : array;
	    }

	    /**
	     * Removes elements from `array` corresponding to `indexes` and returns an
	     * array of removed elements.
	     *
	     * **Note:** Unlike `_.at`, this method mutates `array`.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Array
	     * @param {Array} array The array to modify.
	     * @param {...(number|number[])} [indexes] The indexes of elements to remove.
	     * @returns {Array} Returns the new array of removed elements.
	     * @example
	     *
	     * var array = ['a', 'b', 'c', 'd'];
	     * var pulled = _.pullAt(array, [1, 3]);
	     *
	     * console.log(array);
	     * // => ['a', 'c']
	     *
	     * console.log(pulled);
	     * // => ['b', 'd']
	     */
	    var pullAt = flatRest(function(array, indexes) {
	      var length = array == null ? 0 : array.length,
	          result = baseAt(array, indexes);

	      basePullAt(array, arrayMap(indexes, function(index) {
	        return isIndex(index, length) ? +index : index;
	      }).sort(compareAscending));

	      return result;
	    });

	    /**
	     * Removes all elements from `array` that `predicate` returns truthy for
	     * and returns an array of the removed elements. The predicate is invoked
	     * with three arguments: (value, index, array).
	     *
	     * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`
	     * to pull elements from an array by value.
	     *
	     * @static
	     * @memberOf _
	     * @since 2.0.0
	     * @category Array
	     * @param {Array} array The array to modify.
	     * @param {Function} [predicate=_.identity] The function invoked per iteration.
	     * @returns {Array} Returns the new array of removed elements.
	     * @example
	     *
	     * var array = [1, 2, 3, 4];
	     * var evens = _.remove(array, function(n) {
	     *   return n % 2 == 0;
	     * });
	     *
	     * console.log(array);
	     * // => [1, 3]
	     *
	     * console.log(evens);
	     * // => [2, 4]
	     */
	    function remove(array, predicate) {
	      var result = [];
	      if (!(array && array.length)) {
	        return result;
	      }
	      var index = -1,
	          indexes = [],
	          length = array.length;

	      predicate = getIteratee(predicate, 3);
	      while (++index < length) {
	        var value = array[index];
	        if (predicate(value, index, array)) {
	          result.push(value);
	          indexes.push(index);
	        }
	      }
	      basePullAt(array, indexes);
	      return result;
	    }

	    /**
	     * Reverses `array` so that the first element becomes the last, the second
	     * element becomes the second to last, and so on.
	     *
	     * **Note:** This method mutates `array` and is based on
	     * [`Array#reverse`](https://mdn.io/Array/reverse).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {Array} array The array to modify.
	     * @returns {Array} Returns `array`.
	     * @example
	     *
	     * var array = [1, 2, 3];
	     *
	     * _.reverse(array);
	     * // => [3, 2, 1]
	     *
	     * console.log(array);
	     * // => [3, 2, 1]
	     */
	    function reverse(array) {
	      return array == null ? array : nativeReverse.call(array);
	    }

	    /**
	     * Creates a slice of `array` from `start` up to, but not including, `end`.
	     *
	     * **Note:** This method is used instead of
	     * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are
	     * returned.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Array
	     * @param {Array} array The array to slice.
	     * @param {number} [start=0] The start position.
	     * @param {number} [end=array.length] The end position.
	     * @returns {Array} Returns the slice of `array`.
	     */
	    function slice(array, start, end) {
	      var length = array == null ? 0 : array.length;
	      if (!length) {
	        return [];
	      }
	      if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {
	        start = 0;
	        end = length;
	      }
	      else {
	        start = start == null ? 0 : toInteger(start);
	        end = end === undefined$1 ? length : toInteger(end);
	      }
	      return baseSlice(array, start, end);
	    }

	    /**
	     * Uses a binary search to determine the lowest index at which `value`
	     * should be inserted into `array` in order to maintain its sort order.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Array
	     * @param {Array} array The sorted array to inspect.
	     * @param {*} value The value to evaluate.
	     * @returns {number} Returns the index at which `value` should be inserted
	     *  into `array`.
	     * @example
	     *
	     * _.sortedIndex([30, 50], 40);
	     * // => 1
	     */
	    function sortedIndex(array, value) {
	      return baseSortedIndex(array, value);
	    }

	    /**
	     * This method is like `_.sortedIndex` except that it accepts `iteratee`
	     * which is invoked for `value` and each element of `array` to compute their
	     * sort ranking. The iteratee is invoked with one argument: (value).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {Array} array The sorted array to inspect.
	     * @param {*} value The value to evaluate.
	     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
	     * @returns {number} Returns the index at which `value` should be inserted
	     *  into `array`.
	     * @example
	     *
	     * var objects = [{ 'x': 4 }, { 'x': 5 }];
	     *
	     * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
	     * // => 0
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.sortedIndexBy(objects, { 'x': 4 }, 'x');
	     * // => 0
	     */
	    function sortedIndexBy(array, value, iteratee) {
	      return baseSortedIndexBy(array, value, getIteratee(iteratee, 2));
	    }

	    /**
	     * This method is like `_.indexOf` except that it performs a binary
	     * search on a sorted `array`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {Array} array The array to inspect.
	     * @param {*} value The value to search for.
	     * @returns {number} Returns the index of the matched value, else `-1`.
	     * @example
	     *
	     * _.sortedIndexOf([4, 5, 5, 5, 6], 5);
	     * // => 1
	     */
	    function sortedIndexOf(array, value) {
	      var length = array == null ? 0 : array.length;
	      if (length) {
	        var index = baseSortedIndex(array, value);
	        if (index < length && eq(array[index], value)) {
	          return index;
	        }
	      }
	      return -1;
	    }

	    /**
	     * This method is like `_.sortedIndex` except that it returns the highest
	     * index at which `value` should be inserted into `array` in order to
	     * maintain its sort order.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Array
	     * @param {Array} array The sorted array to inspect.
	     * @param {*} value The value to evaluate.
	     * @returns {number} Returns the index at which `value` should be inserted
	     *  into `array`.
	     * @example
	     *
	     * _.sortedLastIndex([4, 5, 5, 5, 6], 5);
	     * // => 4
	     */
	    function sortedLastIndex(array, value) {
	      return baseSortedIndex(array, value, true);
	    }

	    /**
	     * This method is like `_.sortedLastIndex` except that it accepts `iteratee`
	     * which is invoked for `value` and each element of `array` to compute their
	     * sort ranking. The iteratee is invoked with one argument: (value).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {Array} array The sorted array to inspect.
	     * @param {*} value The value to evaluate.
	     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
	     * @returns {number} Returns the index at which `value` should be inserted
	     *  into `array`.
	     * @example
	     *
	     * var objects = [{ 'x': 4 }, { 'x': 5 }];
	     *
	     * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
	     * // => 1
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');
	     * // => 1
	     */
	    function sortedLastIndexBy(array, value, iteratee) {
	      return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true);
	    }

	    /**
	     * This method is like `_.lastIndexOf` except that it performs a binary
	     * search on a sorted `array`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {Array} array The array to inspect.
	     * @param {*} value The value to search for.
	     * @returns {number} Returns the index of the matched value, else `-1`.
	     * @example
	     *
	     * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);
	     * // => 3
	     */
	    function sortedLastIndexOf(array, value) {
	      var length = array == null ? 0 : array.length;
	      if (length) {
	        var index = baseSortedIndex(array, value, true) - 1;
	        if (eq(array[index], value)) {
	          return index;
	        }
	      }
	      return -1;
	    }

	    /**
	     * This method is like `_.uniq` except that it's designed and optimized
	     * for sorted arrays.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {Array} array The array to inspect.
	     * @returns {Array} Returns the new duplicate free array.
	     * @example
	     *
	     * _.sortedUniq([1, 1, 2]);
	     * // => [1, 2]
	     */
	    function sortedUniq(array) {
	      return (array && array.length)
	        ? baseSortedUniq(array)
	        : [];
	    }

	    /**
	     * This method is like `_.uniqBy` except that it's designed and optimized
	     * for sorted arrays.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {Array} array The array to inspect.
	     * @param {Function} [iteratee] The iteratee invoked per element.
	     * @returns {Array} Returns the new duplicate free array.
	     * @example
	     *
	     * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);
	     * // => [1.1, 2.3]
	     */
	    function sortedUniqBy(array, iteratee) {
	      return (array && array.length)
	        ? baseSortedUniq(array, getIteratee(iteratee, 2))
	        : [];
	    }

	    /**
	     * Gets all but the first element of `array`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {Array} array The array to query.
	     * @returns {Array} Returns the slice of `array`.
	     * @example
	     *
	     * _.tail([1, 2, 3]);
	     * // => [2, 3]
	     */
	    function tail(array) {
	      var length = array == null ? 0 : array.length;
	      return length ? baseSlice(array, 1, length) : [];
	    }

	    /**
	     * Creates a slice of `array` with `n` elements taken from the beginning.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Array
	     * @param {Array} array The array to query.
	     * @param {number} [n=1] The number of elements to take.
	     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
	     * @returns {Array} Returns the slice of `array`.
	     * @example
	     *
	     * _.take([1, 2, 3]);
	     * // => [1]
	     *
	     * _.take([1, 2, 3], 2);
	     * // => [1, 2]
	     *
	     * _.take([1, 2, 3], 5);
	     * // => [1, 2, 3]
	     *
	     * _.take([1, 2, 3], 0);
	     * // => []
	     */
	    function take(array, n, guard) {
	      if (!(array && array.length)) {
	        return [];
	      }
	      n = (guard || n === undefined$1) ? 1 : toInteger(n);
	      return baseSlice(array, 0, n < 0 ? 0 : n);
	    }

	    /**
	     * Creates a slice of `array` with `n` elements taken from the end.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Array
	     * @param {Array} array The array to query.
	     * @param {number} [n=1] The number of elements to take.
	     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
	     * @returns {Array} Returns the slice of `array`.
	     * @example
	     *
	     * _.takeRight([1, 2, 3]);
	     * // => [3]
	     *
	     * _.takeRight([1, 2, 3], 2);
	     * // => [2, 3]
	     *
	     * _.takeRight([1, 2, 3], 5);
	     * // => [1, 2, 3]
	     *
	     * _.takeRight([1, 2, 3], 0);
	     * // => []
	     */
	    function takeRight(array, n, guard) {
	      var length = array == null ? 0 : array.length;
	      if (!length) {
	        return [];
	      }
	      n = (guard || n === undefined$1) ? 1 : toInteger(n);
	      n = length - n;
	      return baseSlice(array, n < 0 ? 0 : n, length);
	    }

	    /**
	     * Creates a slice of `array` with elements taken from the end. Elements are
	     * taken until `predicate` returns falsey. The predicate is invoked with
	     * three arguments: (value, index, array).
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Array
	     * @param {Array} array The array to query.
	     * @param {Function} [predicate=_.identity] The function invoked per iteration.
	     * @returns {Array} Returns the slice of `array`.
	     * @example
	     *
	     * var users = [
	     *   { 'user': 'barney',  'active': true },
	     *   { 'user': 'fred',    'active': false },
	     *   { 'user': 'pebbles', 'active': false }
	     * ];
	     *
	     * _.takeRightWhile(users, function(o) { return !o.active; });
	     * // => objects for ['fred', 'pebbles']
	     *
	     * // The `_.matches` iteratee shorthand.
	     * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });
	     * // => objects for ['pebbles']
	     *
	     * // The `_.matchesProperty` iteratee shorthand.
	     * _.takeRightWhile(users, ['active', false]);
	     * // => objects for ['fred', 'pebbles']
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.takeRightWhile(users, 'active');
	     * // => []
	     */
	    function takeRightWhile(array, predicate) {
	      return (array && array.length)
	        ? baseWhile(array, getIteratee(predicate, 3), false, true)
	        : [];
	    }

	    /**
	     * Creates a slice of `array` with elements taken from the beginning. Elements
	     * are taken until `predicate` returns falsey. The predicate is invoked with
	     * three arguments: (value, index, array).
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Array
	     * @param {Array} array The array to query.
	     * @param {Function} [predicate=_.identity] The function invoked per iteration.
	     * @returns {Array} Returns the slice of `array`.
	     * @example
	     *
	     * var users = [
	     *   { 'user': 'barney',  'active': false },
	     *   { 'user': 'fred',    'active': false },
	     *   { 'user': 'pebbles', 'active': true }
	     * ];
	     *
	     * _.takeWhile(users, function(o) { return !o.active; });
	     * // => objects for ['barney', 'fred']
	     *
	     * // The `_.matches` iteratee shorthand.
	     * _.takeWhile(users, { 'user': 'barney', 'active': false });
	     * // => objects for ['barney']
	     *
	     * // The `_.matchesProperty` iteratee shorthand.
	     * _.takeWhile(users, ['active', false]);
	     * // => objects for ['barney', 'fred']
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.takeWhile(users, 'active');
	     * // => []
	     */
	    function takeWhile(array, predicate) {
	      return (array && array.length)
	        ? baseWhile(array, getIteratee(predicate, 3))
	        : [];
	    }

	    /**
	     * Creates an array of unique values, in order, from all given arrays using
	     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
	     * for equality comparisons.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Array
	     * @param {...Array} [arrays] The arrays to inspect.
	     * @returns {Array} Returns the new array of combined values.
	     * @example
	     *
	     * _.union([2], [1, 2]);
	     * // => [2, 1]
	     */
	    var union = baseRest(function(arrays) {
	      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));
	    });

	    /**
	     * This method is like `_.union` except that it accepts `iteratee` which is
	     * invoked for each element of each `arrays` to generate the criterion by
	     * which uniqueness is computed. Result values are chosen from the first
	     * array in which the value occurs. The iteratee is invoked with one argument:
	     * (value).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {...Array} [arrays] The arrays to inspect.
	     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
	     * @returns {Array} Returns the new array of combined values.
	     * @example
	     *
	     * _.unionBy([2.1], [1.2, 2.3], Math.floor);
	     * // => [2.1, 1.2]
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
	     * // => [{ 'x': 1 }, { 'x': 2 }]
	     */
	    var unionBy = baseRest(function(arrays) {
	      var iteratee = last(arrays);
	      if (isArrayLikeObject(iteratee)) {
	        iteratee = undefined$1;
	      }
	      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2));
	    });

	    /**
	     * This method is like `_.union` except that it accepts `comparator` which
	     * is invoked to compare elements of `arrays`. Result values are chosen from
	     * the first array in which the value occurs. The comparator is invoked
	     * with two arguments: (arrVal, othVal).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {...Array} [arrays] The arrays to inspect.
	     * @param {Function} [comparator] The comparator invoked per element.
	     * @returns {Array} Returns the new array of combined values.
	     * @example
	     *
	     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
	     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
	     *
	     * _.unionWith(objects, others, _.isEqual);
	     * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
	     */
	    var unionWith = baseRest(function(arrays) {
	      var comparator = last(arrays);
	      comparator = typeof comparator == 'function' ? comparator : undefined$1;
	      return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined$1, comparator);
	    });

	    /**
	     * Creates a duplicate-free version of an array, using
	     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
	     * for equality comparisons, in which only the first occurrence of each element
	     * is kept. The order of result values is determined by the order they occur
	     * in the array.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Array
	     * @param {Array} array The array to inspect.
	     * @returns {Array} Returns the new duplicate free array.
	     * @example
	     *
	     * _.uniq([2, 1, 2]);
	     * // => [2, 1]
	     */
	    function uniq(array) {
	      return (array && array.length) ? baseUniq(array) : [];
	    }

	    /**
	     * This method is like `_.uniq` except that it accepts `iteratee` which is
	     * invoked for each element in `array` to generate the criterion by which
	     * uniqueness is computed. The order of result values is determined by the
	     * order they occur in the array. The iteratee is invoked with one argument:
	     * (value).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {Array} array The array to inspect.
	     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
	     * @returns {Array} Returns the new duplicate free array.
	     * @example
	     *
	     * _.uniqBy([2.1, 1.2, 2.3], Math.floor);
	     * // => [2.1, 1.2]
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
	     * // => [{ 'x': 1 }, { 'x': 2 }]
	     */
	    function uniqBy(array, iteratee) {
	      return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : [];
	    }

	    /**
	     * This method is like `_.uniq` except that it accepts `comparator` which
	     * is invoked to compare elements of `array`. The order of result values is
	     * determined by the order they occur in the array.The comparator is invoked
	     * with two arguments: (arrVal, othVal).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {Array} array The array to inspect.
	     * @param {Function} [comparator] The comparator invoked per element.
	     * @returns {Array} Returns the new duplicate free array.
	     * @example
	     *
	     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];
	     *
	     * _.uniqWith(objects, _.isEqual);
	     * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]
	     */
	    function uniqWith(array, comparator) {
	      comparator = typeof comparator == 'function' ? comparator : undefined$1;
	      return (array && array.length) ? baseUniq(array, undefined$1, comparator) : [];
	    }

	    /**
	     * This method is like `_.zip` except that it accepts an array of grouped
	     * elements and creates an array regrouping the elements to their pre-zip
	     * configuration.
	     *
	     * @static
	     * @memberOf _
	     * @since 1.2.0
	     * @category Array
	     * @param {Array} array The array of grouped elements to process.
	     * @returns {Array} Returns the new array of regrouped elements.
	     * @example
	     *
	     * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);
	     * // => [['a', 1, true], ['b', 2, false]]
	     *
	     * _.unzip(zipped);
	     * // => [['a', 'b'], [1, 2], [true, false]]
	     */
	    function unzip(array) {
	      if (!(array && array.length)) {
	        return [];
	      }
	      var length = 0;
	      array = arrayFilter(array, function(group) {
	        if (isArrayLikeObject(group)) {
	          length = nativeMax(group.length, length);
	          return true;
	        }
	      });
	      return baseTimes(length, function(index) {
	        return arrayMap(array, baseProperty(index));
	      });
	    }

	    /**
	     * This method is like `_.unzip` except that it accepts `iteratee` to specify
	     * how regrouped values should be combined. The iteratee is invoked with the
	     * elements of each group: (...group).
	     *
	     * @static
	     * @memberOf _
	     * @since 3.8.0
	     * @category Array
	     * @param {Array} array The array of grouped elements to process.
	     * @param {Function} [iteratee=_.identity] The function to combine
	     *  regrouped values.
	     * @returns {Array} Returns the new array of regrouped elements.
	     * @example
	     *
	     * var zipped = _.zip([1, 2], [10, 20], [100, 200]);
	     * // => [[1, 10, 100], [2, 20, 200]]
	     *
	     * _.unzipWith(zipped, _.add);
	     * // => [3, 30, 300]
	     */
	    function unzipWith(array, iteratee) {
	      if (!(array && array.length)) {
	        return [];
	      }
	      var result = unzip(array);
	      if (iteratee == null) {
	        return result;
	      }
	      return arrayMap(result, function(group) {
	        return apply(iteratee, undefined$1, group);
	      });
	    }

	    /**
	     * Creates an array excluding all given values using
	     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
	     * for equality comparisons.
	     *
	     * **Note:** Unlike `_.pull`, this method returns a new array.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Array
	     * @param {Array} array The array to inspect.
	     * @param {...*} [values] The values to exclude.
	     * @returns {Array} Returns the new array of filtered values.
	     * @see _.difference, _.xor
	     * @example
	     *
	     * _.without([2, 1, 2, 3], 1, 2);
	     * // => [3]
	     */
	    var without = baseRest(function(array, values) {
	      return isArrayLikeObject(array)
	        ? baseDifference(array, values)
	        : [];
	    });

	    /**
	     * Creates an array of unique values that is the
	     * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)
	     * of the given arrays. The order of result values is determined by the order
	     * they occur in the arrays.
	     *
	     * @static
	     * @memberOf _
	     * @since 2.4.0
	     * @category Array
	     * @param {...Array} [arrays] The arrays to inspect.
	     * @returns {Array} Returns the new array of filtered values.
	     * @see _.difference, _.without
	     * @example
	     *
	     * _.xor([2, 1], [2, 3]);
	     * // => [1, 3]
	     */
	    var xor = baseRest(function(arrays) {
	      return baseXor(arrayFilter(arrays, isArrayLikeObject));
	    });

	    /**
	     * This method is like `_.xor` except that it accepts `iteratee` which is
	     * invoked for each element of each `arrays` to generate the criterion by
	     * which by which they're compared. The order of result values is determined
	     * by the order they occur in the arrays. The iteratee is invoked with one
	     * argument: (value).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {...Array} [arrays] The arrays to inspect.
	     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
	     * @returns {Array} Returns the new array of filtered values.
	     * @example
	     *
	     * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);
	     * // => [1.2, 3.4]
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
	     * // => [{ 'x': 2 }]
	     */
	    var xorBy = baseRest(function(arrays) {
	      var iteratee = last(arrays);
	      if (isArrayLikeObject(iteratee)) {
	        iteratee = undefined$1;
	      }
	      return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2));
	    });

	    /**
	     * This method is like `_.xor` except that it accepts `comparator` which is
	     * invoked to compare elements of `arrays`. The order of result values is
	     * determined by the order they occur in the arrays. The comparator is invoked
	     * with two arguments: (arrVal, othVal).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Array
	     * @param {...Array} [arrays] The arrays to inspect.
	     * @param {Function} [comparator] The comparator invoked per element.
	     * @returns {Array} Returns the new array of filtered values.
	     * @example
	     *
	     * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
	     * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
	     *
	     * _.xorWith(objects, others, _.isEqual);
	     * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
	     */
	    var xorWith = baseRest(function(arrays) {
	      var comparator = last(arrays);
	      comparator = typeof comparator == 'function' ? comparator : undefined$1;
	      return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined$1, comparator);
	    });

	    /**
	     * Creates an array of grouped elements, the first of which contains the
	     * first elements of the given arrays, the second of which contains the
	     * second elements of the given arrays, and so on.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Array
	     * @param {...Array} [arrays] The arrays to process.
	     * @returns {Array} Returns the new array of grouped elements.
	     * @example
	     *
	     * _.zip(['a', 'b'], [1, 2], [true, false]);
	     * // => [['a', 1, true], ['b', 2, false]]
	     */
	    var zip = baseRest(unzip);

	    /**
	     * This method is like `_.fromPairs` except that it accepts two arrays,
	     * one of property identifiers and one of corresponding values.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.4.0
	     * @category Array
	     * @param {Array} [props=[]] The property identifiers.
	     * @param {Array} [values=[]] The property values.
	     * @returns {Object} Returns the new object.
	     * @example
	     *
	     * _.zipObject(['a', 'b'], [1, 2]);
	     * // => { 'a': 1, 'b': 2 }
	     */
	    function zipObject(props, values) {
	      return baseZipObject(props || [], values || [], assignValue);
	    }

	    /**
	     * This method is like `_.zipObject` except that it supports property paths.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.1.0
	     * @category Array
	     * @param {Array} [props=[]] The property identifiers.
	     * @param {Array} [values=[]] The property values.
	     * @returns {Object} Returns the new object.
	     * @example
	     *
	     * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);
	     * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }
	     */
	    function zipObjectDeep(props, values) {
	      return baseZipObject(props || [], values || [], baseSet);
	    }

	    /**
	     * This method is like `_.zip` except that it accepts `iteratee` to specify
	     * how grouped values should be combined. The iteratee is invoked with the
	     * elements of each group: (...group).
	     *
	     * @static
	     * @memberOf _
	     * @since 3.8.0
	     * @category Array
	     * @param {...Array} [arrays] The arrays to process.
	     * @param {Function} [iteratee=_.identity] The function to combine
	     *  grouped values.
	     * @returns {Array} Returns the new array of grouped elements.
	     * @example
	     *
	     * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {
	     *   return a + b + c;
	     * });
	     * // => [111, 222]
	     */
	    var zipWith = baseRest(function(arrays) {
	      var length = arrays.length,
	          iteratee = length > 1 ? arrays[length - 1] : undefined$1;

	      iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined$1;
	      return unzipWith(arrays, iteratee);
	    });

	    /*------------------------------------------------------------------------*/

	    /**
	     * Creates a `lodash` wrapper instance that wraps `value` with explicit method
	     * chain sequences enabled. The result of such sequences must be unwrapped
	     * with `_#value`.
	     *
	     * @static
	     * @memberOf _
	     * @since 1.3.0
	     * @category Seq
	     * @param {*} value The value to wrap.
	     * @returns {Object} Returns the new `lodash` wrapper instance.
	     * @example
	     *
	     * var users = [
	     *   { 'user': 'barney',  'age': 36 },
	     *   { 'user': 'fred',    'age': 40 },
	     *   { 'user': 'pebbles', 'age': 1 }
	     * ];
	     *
	     * var youngest = _
	     *   .chain(users)
	     *   .sortBy('age')
	     *   .map(function(o) {
	     *     return o.user + ' is ' + o.age;
	     *   })
	     *   .head()
	     *   .value();
	     * // => 'pebbles is 1'
	     */
	    function chain(value) {
	      var result = lodash(value);
	      result.__chain__ = true;
	      return result;
	    }

	    /**
	     * This method invokes `interceptor` and returns `value`. The interceptor
	     * is invoked with one argument; (value). The purpose of this method is to
	     * "tap into" a method chain sequence in order to modify intermediate results.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Seq
	     * @param {*} value The value to provide to `interceptor`.
	     * @param {Function} interceptor The function to invoke.
	     * @returns {*} Returns `value`.
	     * @example
	     *
	     * _([1, 2, 3])
	     *  .tap(function(array) {
	     *    // Mutate input array.
	     *    array.pop();
	     *  })
	     *  .reverse()
	     *  .value();
	     * // => [2, 1]
	     */
	    function tap(value, interceptor) {
	      interceptor(value);
	      return value;
	    }

	    /**
	     * This method is like `_.tap` except that it returns the result of `interceptor`.
	     * The purpose of this method is to "pass thru" values replacing intermediate
	     * results in a method chain sequence.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Seq
	     * @param {*} value The value to provide to `interceptor`.
	     * @param {Function} interceptor The function to invoke.
	     * @returns {*} Returns the result of `interceptor`.
	     * @example
	     *
	     * _('  abc  ')
	     *  .chain()
	     *  .trim()
	     *  .thru(function(value) {
	     *    return [value];
	     *  })
	     *  .value();
	     * // => ['abc']
	     */
	    function thru(value, interceptor) {
	      return interceptor(value);
	    }

	    /**
	     * This method is the wrapper version of `_.at`.
	     *
	     * @name at
	     * @memberOf _
	     * @since 1.0.0
	     * @category Seq
	     * @param {...(string|string[])} [paths] The property paths to pick.
	     * @returns {Object} Returns the new `lodash` wrapper instance.
	     * @example
	     *
	     * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
	     *
	     * _(object).at(['a[0].b.c', 'a[1]']).value();
	     * // => [3, 4]
	     */
	    var wrapperAt = flatRest(function(paths) {
	      var length = paths.length,
	          start = length ? paths[0] : 0,
	          value = this.__wrapped__,
	          interceptor = function(object) { return baseAt(object, paths); };

	      if (length > 1 || this.__actions__.length ||
	          !(value instanceof LazyWrapper) || !isIndex(start)) {
	        return this.thru(interceptor);
	      }
	      value = value.slice(start, +start + (length ? 1 : 0));
	      value.__actions__.push({
	        'func': thru,
	        'args': [interceptor],
	        'thisArg': undefined$1
	      });
	      return new LodashWrapper(value, this.__chain__).thru(function(array) {
	        if (length && !array.length) {
	          array.push(undefined$1);
	        }
	        return array;
	      });
	    });

	    /**
	     * Creates a `lodash` wrapper instance with explicit method chain sequences enabled.
	     *
	     * @name chain
	     * @memberOf _
	     * @since 0.1.0
	     * @category Seq
	     * @returns {Object} Returns the new `lodash` wrapper instance.
	     * @example
	     *
	     * var users = [
	     *   { 'user': 'barney', 'age': 36 },
	     *   { 'user': 'fred',   'age': 40 }
	     * ];
	     *
	     * // A sequence without explicit chaining.
	     * _(users).head();
	     * // => { 'user': 'barney', 'age': 36 }
	     *
	     * // A sequence with explicit chaining.
	     * _(users)
	     *   .chain()
	     *   .head()
	     *   .pick('user')
	     *   .value();
	     * // => { 'user': 'barney' }
	     */
	    function wrapperChain() {
	      return chain(this);
	    }

	    /**
	     * Executes the chain sequence and returns the wrapped result.
	     *
	     * @name commit
	     * @memberOf _
	     * @since 3.2.0
	     * @category Seq
	     * @returns {Object} Returns the new `lodash` wrapper instance.
	     * @example
	     *
	     * var array = [1, 2];
	     * var wrapped = _(array).push(3);
	     *
	     * console.log(array);
	     * // => [1, 2]
	     *
	     * wrapped = wrapped.commit();
	     * console.log(array);
	     * // => [1, 2, 3]
	     *
	     * wrapped.last();
	     * // => 3
	     *
	     * console.log(array);
	     * // => [1, 2, 3]
	     */
	    function wrapperCommit() {
	      return new LodashWrapper(this.value(), this.__chain__);
	    }

	    /**
	     * Gets the next value on a wrapped object following the
	     * [iterator protocol](https://mdn.io/iteration_protocols#iterator).
	     *
	     * @name next
	     * @memberOf _
	     * @since 4.0.0
	     * @category Seq
	     * @returns {Object} Returns the next iterator value.
	     * @example
	     *
	     * var wrapped = _([1, 2]);
	     *
	     * wrapped.next();
	     * // => { 'done': false, 'value': 1 }
	     *
	     * wrapped.next();
	     * // => { 'done': false, 'value': 2 }
	     *
	     * wrapped.next();
	     * // => { 'done': true, 'value': undefined }
	     */
	    function wrapperNext() {
	      if (this.__values__ === undefined$1) {
	        this.__values__ = toArray(this.value());
	      }
	      var done = this.__index__ >= this.__values__.length,
	          value = done ? undefined$1 : this.__values__[this.__index__++];

	      return { 'done': done, 'value': value };
	    }

	    /**
	     * Enables the wrapper to be iterable.
	     *
	     * @name Symbol.iterator
	     * @memberOf _
	     * @since 4.0.0
	     * @category Seq
	     * @returns {Object} Returns the wrapper object.
	     * @example
	     *
	     * var wrapped = _([1, 2]);
	     *
	     * wrapped[Symbol.iterator]() === wrapped;
	     * // => true
	     *
	     * Array.from(wrapped);
	     * // => [1, 2]
	     */
	    function wrapperToIterator() {
	      return this;
	    }

	    /**
	     * Creates a clone of the chain sequence planting `value` as the wrapped value.
	     *
	     * @name plant
	     * @memberOf _
	     * @since 3.2.0
	     * @category Seq
	     * @param {*} value The value to plant.
	     * @returns {Object} Returns the new `lodash` wrapper instance.
	     * @example
	     *
	     * function square(n) {
	     *   return n * n;
	     * }
	     *
	     * var wrapped = _([1, 2]).map(square);
	     * var other = wrapped.plant([3, 4]);
	     *
	     * other.value();
	     * // => [9, 16]
	     *
	     * wrapped.value();
	     * // => [1, 4]
	     */
	    function wrapperPlant(value) {
	      var result,
	          parent = this;

	      while (parent instanceof baseLodash) {
	        var clone = wrapperClone(parent);
	        clone.__index__ = 0;
	        clone.__values__ = undefined$1;
	        if (result) {
	          previous.__wrapped__ = clone;
	        } else {
	          result = clone;
	        }
	        var previous = clone;
	        parent = parent.__wrapped__;
	      }
	      previous.__wrapped__ = value;
	      return result;
	    }

	    /**
	     * This method is the wrapper version of `_.reverse`.
	     *
	     * **Note:** This method mutates the wrapped array.
	     *
	     * @name reverse
	     * @memberOf _
	     * @since 0.1.0
	     * @category Seq
	     * @returns {Object} Returns the new `lodash` wrapper instance.
	     * @example
	     *
	     * var array = [1, 2, 3];
	     *
	     * _(array).reverse().value()
	     * // => [3, 2, 1]
	     *
	     * console.log(array);
	     * // => [3, 2, 1]
	     */
	    function wrapperReverse() {
	      var value = this.__wrapped__;
	      if (value instanceof LazyWrapper) {
	        var wrapped = value;
	        if (this.__actions__.length) {
	          wrapped = new LazyWrapper(this);
	        }
	        wrapped = wrapped.reverse();
	        wrapped.__actions__.push({
	          'func': thru,
	          'args': [reverse],
	          'thisArg': undefined$1
	        });
	        return new LodashWrapper(wrapped, this.__chain__);
	      }
	      return this.thru(reverse);
	    }

	    /**
	     * Executes the chain sequence to resolve the unwrapped value.
	     *
	     * @name value
	     * @memberOf _
	     * @since 0.1.0
	     * @alias toJSON, valueOf
	     * @category Seq
	     * @returns {*} Returns the resolved unwrapped value.
	     * @example
	     *
	     * _([1, 2, 3]).value();
	     * // => [1, 2, 3]
	     */
	    function wrapperValue() {
	      return baseWrapperValue(this.__wrapped__, this.__actions__);
	    }

	    /*------------------------------------------------------------------------*/

	    /**
	     * Creates an object composed of keys generated from the results of running
	     * each element of `collection` thru `iteratee`. The corresponding value of
	     * each key is the number of times the key was returned by `iteratee`. The
	     * iteratee is invoked with one argument: (value).
	     *
	     * @static
	     * @memberOf _
	     * @since 0.5.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
	     * @returns {Object} Returns the composed aggregate object.
	     * @example
	     *
	     * _.countBy([6.1, 4.2, 6.3], Math.floor);
	     * // => { '4': 1, '6': 2 }
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.countBy(['one', 'two', 'three'], 'length');
	     * // => { '3': 2, '5': 1 }
	     */
	    var countBy = createAggregator(function(result, value, key) {
	      if (hasOwnProperty.call(result, key)) {
	        ++result[key];
	      } else {
	        baseAssignValue(result, key, 1);
	      }
	    });

	    /**
	     * Checks if `predicate` returns truthy for **all** elements of `collection`.
	     * Iteration is stopped once `predicate` returns falsey. The predicate is
	     * invoked with three arguments: (value, index|key, collection).
	     *
	     * **Note:** This method returns `true` for
	     * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because
	     * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of
	     * elements of empty collections.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} [predicate=_.identity] The function invoked per iteration.
	     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
	     * @returns {boolean} Returns `true` if all elements pass the predicate check,
	     *  else `false`.
	     * @example
	     *
	     * _.every([true, 1, null, 'yes'], Boolean);
	     * // => false
	     *
	     * var users = [
	     *   { 'user': 'barney', 'age': 36, 'active': false },
	     *   { 'user': 'fred',   'age': 40, 'active': false }
	     * ];
	     *
	     * // The `_.matches` iteratee shorthand.
	     * _.every(users, { 'user': 'barney', 'active': false });
	     * // => false
	     *
	     * // The `_.matchesProperty` iteratee shorthand.
	     * _.every(users, ['active', false]);
	     * // => true
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.every(users, 'active');
	     * // => false
	     */
	    function every(collection, predicate, guard) {
	      var func = isArray(collection) ? arrayEvery : baseEvery;
	      if (guard && isIterateeCall(collection, predicate, guard)) {
	        predicate = undefined$1;
	      }
	      return func(collection, getIteratee(predicate, 3));
	    }

	    /**
	     * Iterates over elements of `collection`, returning an array of all elements
	     * `predicate` returns truthy for. The predicate is invoked with three
	     * arguments: (value, index|key, collection).
	     *
	     * **Note:** Unlike `_.remove`, this method returns a new array.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} [predicate=_.identity] The function invoked per iteration.
	     * @returns {Array} Returns the new filtered array.
	     * @see _.reject
	     * @example
	     *
	     * var users = [
	     *   { 'user': 'barney', 'age': 36, 'active': true },
	     *   { 'user': 'fred',   'age': 40, 'active': false }
	     * ];
	     *
	     * _.filter(users, function(o) { return !o.active; });
	     * // => objects for ['fred']
	     *
	     * // The `_.matches` iteratee shorthand.
	     * _.filter(users, { 'age': 36, 'active': true });
	     * // => objects for ['barney']
	     *
	     * // The `_.matchesProperty` iteratee shorthand.
	     * _.filter(users, ['active', false]);
	     * // => objects for ['fred']
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.filter(users, 'active');
	     * // => objects for ['barney']
	     */
	    function filter(collection, predicate) {
	      var func = isArray(collection) ? arrayFilter : baseFilter;
	      return func(collection, getIteratee(predicate, 3));
	    }

	    /**
	     * Iterates over elements of `collection`, returning the first element
	     * `predicate` returns truthy for. The predicate is invoked with three
	     * arguments: (value, index|key, collection).
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to inspect.
	     * @param {Function} [predicate=_.identity] The function invoked per iteration.
	     * @param {number} [fromIndex=0] The index to search from.
	     * @returns {*} Returns the matched element, else `undefined`.
	     * @example
	     *
	     * var users = [
	     *   { 'user': 'barney',  'age': 36, 'active': true },
	     *   { 'user': 'fred',    'age': 40, 'active': false },
	     *   { 'user': 'pebbles', 'age': 1,  'active': true }
	     * ];
	     *
	     * _.find(users, function(o) { return o.age < 40; });
	     * // => object for 'barney'
	     *
	     * // The `_.matches` iteratee shorthand.
	     * _.find(users, { 'age': 1, 'active': true });
	     * // => object for 'pebbles'
	     *
	     * // The `_.matchesProperty` iteratee shorthand.
	     * _.find(users, ['active', false]);
	     * // => object for 'fred'
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.find(users, 'active');
	     * // => object for 'barney'
	     */
	    var find = createFind(findIndex);

	    /**
	     * This method is like `_.find` except that it iterates over elements of
	     * `collection` from right to left.
	     *
	     * @static
	     * @memberOf _
	     * @since 2.0.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to inspect.
	     * @param {Function} [predicate=_.identity] The function invoked per iteration.
	     * @param {number} [fromIndex=collection.length-1] The index to search from.
	     * @returns {*} Returns the matched element, else `undefined`.
	     * @example
	     *
	     * _.findLast([1, 2, 3, 4], function(n) {
	     *   return n % 2 == 1;
	     * });
	     * // => 3
	     */
	    var findLast = createFind(findLastIndex);

	    /**
	     * Creates a flattened array of values by running each element in `collection`
	     * thru `iteratee` and flattening the mapped results. The iteratee is invoked
	     * with three arguments: (value, index|key, collection).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
	     * @returns {Array} Returns the new flattened array.
	     * @example
	     *
	     * function duplicate(n) {
	     *   return [n, n];
	     * }
	     *
	     * _.flatMap([1, 2], duplicate);
	     * // => [1, 1, 2, 2]
	     */
	    function flatMap(collection, iteratee) {
	      return baseFlatten(map(collection, iteratee), 1);
	    }

	    /**
	     * This method is like `_.flatMap` except that it recursively flattens the
	     * mapped results.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.7.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
	     * @returns {Array} Returns the new flattened array.
	     * @example
	     *
	     * function duplicate(n) {
	     *   return [[[n, n]]];
	     * }
	     *
	     * _.flatMapDeep([1, 2], duplicate);
	     * // => [1, 1, 2, 2]
	     */
	    function flatMapDeep(collection, iteratee) {
	      return baseFlatten(map(collection, iteratee), INFINITY);
	    }

	    /**
	     * This method is like `_.flatMap` except that it recursively flattens the
	     * mapped results up to `depth` times.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.7.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
	     * @param {number} [depth=1] The maximum recursion depth.
	     * @returns {Array} Returns the new flattened array.
	     * @example
	     *
	     * function duplicate(n) {
	     *   return [[[n, n]]];
	     * }
	     *
	     * _.flatMapDepth([1, 2], duplicate, 2);
	     * // => [[1, 1], [2, 2]]
	     */
	    function flatMapDepth(collection, iteratee, depth) {
	      depth = depth === undefined$1 ? 1 : toInteger(depth);
	      return baseFlatten(map(collection, iteratee), depth);
	    }

	    /**
	     * Iterates over elements of `collection` and invokes `iteratee` for each element.
	     * The iteratee is invoked with three arguments: (value, index|key, collection).
	     * Iteratee functions may exit iteration early by explicitly returning `false`.
	     *
	     * **Note:** As with other "Collections" methods, objects with a "length"
	     * property are iterated like arrays. To avoid this behavior use `_.forIn`
	     * or `_.forOwn` for object iteration.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @alias each
	     * @category Collection
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
	     * @returns {Array|Object} Returns `collection`.
	     * @see _.forEachRight
	     * @example
	     *
	     * _.forEach([1, 2], function(value) {
	     *   console.log(value);
	     * });
	     * // => Logs `1` then `2`.
	     *
	     * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {
	     *   console.log(key);
	     * });
	     * // => Logs 'a' then 'b' (iteration order is not guaranteed).
	     */
	    function forEach(collection, iteratee) {
	      var func = isArray(collection) ? arrayEach : baseEach;
	      return func(collection, getIteratee(iteratee, 3));
	    }

	    /**
	     * This method is like `_.forEach` except that it iterates over elements of
	     * `collection` from right to left.
	     *
	     * @static
	     * @memberOf _
	     * @since 2.0.0
	     * @alias eachRight
	     * @category Collection
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
	     * @returns {Array|Object} Returns `collection`.
	     * @see _.forEach
	     * @example
	     *
	     * _.forEachRight([1, 2], function(value) {
	     *   console.log(value);
	     * });
	     * // => Logs `2` then `1`.
	     */
	    function forEachRight(collection, iteratee) {
	      var func = isArray(collection) ? arrayEachRight : baseEachRight;
	      return func(collection, getIteratee(iteratee, 3));
	    }

	    /**
	     * Creates an object composed of keys generated from the results of running
	     * each element of `collection` thru `iteratee`. The order of grouped values
	     * is determined by the order they occur in `collection`. The corresponding
	     * value of each key is an array of elements responsible for generating the
	     * key. The iteratee is invoked with one argument: (value).
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
	     * @returns {Object} Returns the composed aggregate object.
	     * @example
	     *
	     * _.groupBy([6.1, 4.2, 6.3], Math.floor);
	     * // => { '4': [4.2], '6': [6.1, 6.3] }
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.groupBy(['one', 'two', 'three'], 'length');
	     * // => { '3': ['one', 'two'], '5': ['three'] }
	     */
	    var groupBy = createAggregator(function(result, value, key) {
	      if (hasOwnProperty.call(result, key)) {
	        result[key].push(value);
	      } else {
	        baseAssignValue(result, key, [value]);
	      }
	    });

	    /**
	     * Checks if `value` is in `collection`. If `collection` is a string, it's
	     * checked for a substring of `value`, otherwise
	     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
	     * is used for equality comparisons. If `fromIndex` is negative, it's used as
	     * the offset from the end of `collection`.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Collection
	     * @param {Array|Object|string} collection The collection to inspect.
	     * @param {*} value The value to search for.
	     * @param {number} [fromIndex=0] The index to search from.
	     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
	     * @returns {boolean} Returns `true` if `value` is found, else `false`.
	     * @example
	     *
	     * _.includes([1, 2, 3], 1);
	     * // => true
	     *
	     * _.includes([1, 2, 3], 1, 2);
	     * // => false
	     *
	     * _.includes({ 'a': 1, 'b': 2 }, 1);
	     * // => true
	     *
	     * _.includes('abcd', 'bc');
	     * // => true
	     */
	    function includes(collection, value, fromIndex, guard) {
	      collection = isArrayLike(collection) ? collection : values(collection);
	      fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0;

	      var length = collection.length;
	      if (fromIndex < 0) {
	        fromIndex = nativeMax(length + fromIndex, 0);
	      }
	      return isString(collection)
	        ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1)
	        : (!!length && baseIndexOf(collection, value, fromIndex) > -1);
	    }

	    /**
	     * Invokes the method at `path` of each element in `collection`, returning
	     * an array of the results of each invoked method. Any additional arguments
	     * are provided to each invoked method. If `path` is a function, it's invoked
	     * for, and `this` bound to, each element in `collection`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Array|Function|string} path The path of the method to invoke or
	     *  the function invoked per iteration.
	     * @param {...*} [args] The arguments to invoke each method with.
	     * @returns {Array} Returns the array of results.
	     * @example
	     *
	     * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');
	     * // => [[1, 5, 7], [1, 2, 3]]
	     *
	     * _.invokeMap([123, 456], String.prototype.split, '');
	     * // => [['1', '2', '3'], ['4', '5', '6']]
	     */
	    var invokeMap = baseRest(function(collection, path, args) {
	      var index = -1,
	          isFunc = typeof path == 'function',
	          result = isArrayLike(collection) ? Array(collection.length) : [];

	      baseEach(collection, function(value) {
	        result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);
	      });
	      return result;
	    });

	    /**
	     * Creates an object composed of keys generated from the results of running
	     * each element of `collection` thru `iteratee`. The corresponding value of
	     * each key is the last element responsible for generating the key. The
	     * iteratee is invoked with one argument: (value).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
	     * @returns {Object} Returns the composed aggregate object.
	     * @example
	     *
	     * var array = [
	     *   { 'dir': 'left', 'code': 97 },
	     *   { 'dir': 'right', 'code': 100 }
	     * ];
	     *
	     * _.keyBy(array, function(o) {
	     *   return String.fromCharCode(o.code);
	     * });
	     * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
	     *
	     * _.keyBy(array, 'dir');
	     * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }
	     */
	    var keyBy = createAggregator(function(result, value, key) {
	      baseAssignValue(result, key, value);
	    });

	    /**
	     * Creates an array of values by running each element in `collection` thru
	     * `iteratee`. The iteratee is invoked with three arguments:
	     * (value, index|key, collection).
	     *
	     * Many lodash methods are guarded to work as iteratees for methods like
	     * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.
	     *
	     * The guarded methods are:
	     * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,
	     * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,
	     * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,
	     * `template`, `trim`, `trimEnd`, `trimStart`, and `words`
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
	     * @returns {Array} Returns the new mapped array.
	     * @example
	     *
	     * function square(n) {
	     *   return n * n;
	     * }
	     *
	     * _.map([4, 8], square);
	     * // => [16, 64]
	     *
	     * _.map({ 'a': 4, 'b': 8 }, square);
	     * // => [16, 64] (iteration order is not guaranteed)
	     *
	     * var users = [
	     *   { 'user': 'barney' },
	     *   { 'user': 'fred' }
	     * ];
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.map(users, 'user');
	     * // => ['barney', 'fred']
	     */
	    function map(collection, iteratee) {
	      var func = isArray(collection) ? arrayMap : baseMap;
	      return func(collection, getIteratee(iteratee, 3));
	    }

	    /**
	     * This method is like `_.sortBy` except that it allows specifying the sort
	     * orders of the iteratees to sort by. If `orders` is unspecified, all values
	     * are sorted in ascending order. Otherwise, specify an order of "desc" for
	     * descending or "asc" for ascending sort order of corresponding values.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]
	     *  The iteratees to sort by.
	     * @param {string[]} [orders] The sort orders of `iteratees`.
	     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
	     * @returns {Array} Returns the new sorted array.
	     * @example
	     *
	     * var users = [
	     *   { 'user': 'fred',   'age': 48 },
	     *   { 'user': 'barney', 'age': 34 },
	     *   { 'user': 'fred',   'age': 40 },
	     *   { 'user': 'barney', 'age': 36 }
	     * ];
	     *
	     * // Sort by `user` in ascending order and by `age` in descending order.
	     * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);
	     * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]
	     */
	    function orderBy(collection, iteratees, orders, guard) {
	      if (collection == null) {
	        return [];
	      }
	      if (!isArray(iteratees)) {
	        iteratees = iteratees == null ? [] : [iteratees];
	      }
	      orders = guard ? undefined$1 : orders;
	      if (!isArray(orders)) {
	        orders = orders == null ? [] : [orders];
	      }
	      return baseOrderBy(collection, iteratees, orders);
	    }

	    /**
	     * Creates an array of elements split into two groups, the first of which
	     * contains elements `predicate` returns truthy for, the second of which
	     * contains elements `predicate` returns falsey for. The predicate is
	     * invoked with one argument: (value).
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} [predicate=_.identity] The function invoked per iteration.
	     * @returns {Array} Returns the array of grouped elements.
	     * @example
	     *
	     * var users = [
	     *   { 'user': 'barney',  'age': 36, 'active': false },
	     *   { 'user': 'fred',    'age': 40, 'active': true },
	     *   { 'user': 'pebbles', 'age': 1,  'active': false }
	     * ];
	     *
	     * _.partition(users, function(o) { return o.active; });
	     * // => objects for [['fred'], ['barney', 'pebbles']]
	     *
	     * // The `_.matches` iteratee shorthand.
	     * _.partition(users, { 'age': 1, 'active': false });
	     * // => objects for [['pebbles'], ['barney', 'fred']]
	     *
	     * // The `_.matchesProperty` iteratee shorthand.
	     * _.partition(users, ['active', false]);
	     * // => objects for [['barney', 'pebbles'], ['fred']]
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.partition(users, 'active');
	     * // => objects for [['fred'], ['barney', 'pebbles']]
	     */
	    var partition = createAggregator(function(result, value, key) {
	      result[key ? 0 : 1].push(value);
	    }, function() { return [[], []]; });

	    /**
	     * Reduces `collection` to a value which is the accumulated result of running
	     * each element in `collection` thru `iteratee`, where each successive
	     * invocation is supplied the return value of the previous. If `accumulator`
	     * is not given, the first element of `collection` is used as the initial
	     * value. The iteratee is invoked with four arguments:
	     * (accumulator, value, index|key, collection).
	     *
	     * Many lodash methods are guarded to work as iteratees for methods like
	     * `_.reduce`, `_.reduceRight`, and `_.transform`.
	     *
	     * The guarded methods are:
	     * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,
	     * and `sortBy`
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
	     * @param {*} [accumulator] The initial value.
	     * @returns {*} Returns the accumulated value.
	     * @see _.reduceRight
	     * @example
	     *
	     * _.reduce([1, 2], function(sum, n) {
	     *   return sum + n;
	     * }, 0);
	     * // => 3
	     *
	     * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
	     *   (result[value] || (result[value] = [])).push(key);
	     *   return result;
	     * }, {});
	     * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)
	     */
	    function reduce(collection, iteratee, accumulator) {
	      var func = isArray(collection) ? arrayReduce : baseReduce,
	          initAccum = arguments.length < 3;

	      return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);
	    }

	    /**
	     * This method is like `_.reduce` except that it iterates over elements of
	     * `collection` from right to left.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
	     * @param {*} [accumulator] The initial value.
	     * @returns {*} Returns the accumulated value.
	     * @see _.reduce
	     * @example
	     *
	     * var array = [[0, 1], [2, 3], [4, 5]];
	     *
	     * _.reduceRight(array, function(flattened, other) {
	     *   return flattened.concat(other);
	     * }, []);
	     * // => [4, 5, 2, 3, 0, 1]
	     */
	    function reduceRight(collection, iteratee, accumulator) {
	      var func = isArray(collection) ? arrayReduceRight : baseReduce,
	          initAccum = arguments.length < 3;

	      return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);
	    }

	    /**
	     * The opposite of `_.filter`; this method returns the elements of `collection`
	     * that `predicate` does **not** return truthy for.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} [predicate=_.identity] The function invoked per iteration.
	     * @returns {Array} Returns the new filtered array.
	     * @see _.filter
	     * @example
	     *
	     * var users = [
	     *   { 'user': 'barney', 'age': 36, 'active': false },
	     *   { 'user': 'fred',   'age': 40, 'active': true }
	     * ];
	     *
	     * _.reject(users, function(o) { return !o.active; });
	     * // => objects for ['fred']
	     *
	     * // The `_.matches` iteratee shorthand.
	     * _.reject(users, { 'age': 40, 'active': true });
	     * // => objects for ['barney']
	     *
	     * // The `_.matchesProperty` iteratee shorthand.
	     * _.reject(users, ['active', false]);
	     * // => objects for ['fred']
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.reject(users, 'active');
	     * // => objects for ['barney']
	     */
	    function reject(collection, predicate) {
	      var func = isArray(collection) ? arrayFilter : baseFilter;
	      return func(collection, negate(getIteratee(predicate, 3)));
	    }

	    /**
	     * Gets a random element from `collection`.
	     *
	     * @static
	     * @memberOf _
	     * @since 2.0.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to sample.
	     * @returns {*} Returns the random element.
	     * @example
	     *
	     * _.sample([1, 2, 3, 4]);
	     * // => 2
	     */
	    function sample(collection) {
	      var func = isArray(collection) ? arraySample : baseSample;
	      return func(collection);
	    }

	    /**
	     * Gets `n` random elements at unique keys from `collection` up to the
	     * size of `collection`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to sample.
	     * @param {number} [n=1] The number of elements to sample.
	     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
	     * @returns {Array} Returns the random elements.
	     * @example
	     *
	     * _.sampleSize([1, 2, 3], 2);
	     * // => [3, 1]
	     *
	     * _.sampleSize([1, 2, 3], 4);
	     * // => [2, 3, 1]
	     */
	    function sampleSize(collection, n, guard) {
	      if ((guard ? isIterateeCall(collection, n, guard) : n === undefined$1)) {
	        n = 1;
	      } else {
	        n = toInteger(n);
	      }
	      var func = isArray(collection) ? arraySampleSize : baseSampleSize;
	      return func(collection, n);
	    }

	    /**
	     * Creates an array of shuffled values, using a version of the
	     * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to shuffle.
	     * @returns {Array} Returns the new shuffled array.
	     * @example
	     *
	     * _.shuffle([1, 2, 3, 4]);
	     * // => [4, 1, 3, 2]
	     */
	    function shuffle(collection) {
	      var func = isArray(collection) ? arrayShuffle : baseShuffle;
	      return func(collection);
	    }

	    /**
	     * Gets the size of `collection` by returning its length for array-like
	     * values or the number of own enumerable string keyed properties for objects.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Collection
	     * @param {Array|Object|string} collection The collection to inspect.
	     * @returns {number} Returns the collection size.
	     * @example
	     *
	     * _.size([1, 2, 3]);
	     * // => 3
	     *
	     * _.size({ 'a': 1, 'b': 2 });
	     * // => 2
	     *
	     * _.size('pebbles');
	     * // => 7
	     */
	    function size(collection) {
	      if (collection == null) {
	        return 0;
	      }
	      if (isArrayLike(collection)) {
	        return isString(collection) ? stringSize(collection) : collection.length;
	      }
	      var tag = getTag(collection);
	      if (tag == mapTag || tag == setTag) {
	        return collection.size;
	      }
	      return baseKeys(collection).length;
	    }

	    /**
	     * Checks if `predicate` returns truthy for **any** element of `collection`.
	     * Iteration is stopped once `predicate` returns truthy. The predicate is
	     * invoked with three arguments: (value, index|key, collection).
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {Function} [predicate=_.identity] The function invoked per iteration.
	     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
	     * @returns {boolean} Returns `true` if any element passes the predicate check,
	     *  else `false`.
	     * @example
	     *
	     * _.some([null, 0, 'yes', false], Boolean);
	     * // => true
	     *
	     * var users = [
	     *   { 'user': 'barney', 'active': true },
	     *   { 'user': 'fred',   'active': false }
	     * ];
	     *
	     * // The `_.matches` iteratee shorthand.
	     * _.some(users, { 'user': 'barney', 'active': false });
	     * // => false
	     *
	     * // The `_.matchesProperty` iteratee shorthand.
	     * _.some(users, ['active', false]);
	     * // => true
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.some(users, 'active');
	     * // => true
	     */
	    function some(collection, predicate, guard) {
	      var func = isArray(collection) ? arraySome : baseSome;
	      if (guard && isIterateeCall(collection, predicate, guard)) {
	        predicate = undefined$1;
	      }
	      return func(collection, getIteratee(predicate, 3));
	    }

	    /**
	     * Creates an array of elements, sorted in ascending order by the results of
	     * running each element in a collection thru each iteratee. This method
	     * performs a stable sort, that is, it preserves the original sort order of
	     * equal elements. The iteratees are invoked with one argument: (value).
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Collection
	     * @param {Array|Object} collection The collection to iterate over.
	     * @param {...(Function|Function[])} [iteratees=[_.identity]]
	     *  The iteratees to sort by.
	     * @returns {Array} Returns the new sorted array.
	     * @example
	     *
	     * var users = [
	     *   { 'user': 'fred',   'age': 48 },
	     *   { 'user': 'barney', 'age': 36 },
	     *   { 'user': 'fred',   'age': 40 },
	     *   { 'user': 'barney', 'age': 34 }
	     * ];
	     *
	     * _.sortBy(users, [function(o) { return o.user; }]);
	     * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]
	     *
	     * _.sortBy(users, ['user', 'age']);
	     * // => objects for [['barney', 34], ['barney', 36], ['fred', 40], ['fred', 48]]
	     */
	    var sortBy = baseRest(function(collection, iteratees) {
	      if (collection == null) {
	        return [];
	      }
	      var length = iteratees.length;
	      if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {
	        iteratees = [];
	      } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {
	        iteratees = [iteratees[0]];
	      }
	      return baseOrderBy(collection, baseFlatten(iteratees, 1), []);
	    });

	    /*------------------------------------------------------------------------*/

	    /**
	     * Gets the timestamp of the number of milliseconds that have elapsed since
	     * the Unix epoch (1 January 1970 00:00:00 UTC).
	     *
	     * @static
	     * @memberOf _
	     * @since 2.4.0
	     * @category Date
	     * @returns {number} Returns the timestamp.
	     * @example
	     *
	     * _.defer(function(stamp) {
	     *   console.log(_.now() - stamp);
	     * }, _.now());
	     * // => Logs the number of milliseconds it took for the deferred invocation.
	     */
	    var now = ctxNow || function() {
	      return root.Date.now();
	    };

	    /*------------------------------------------------------------------------*/

	    /**
	     * The opposite of `_.before`; this method creates a function that invokes
	     * `func` once it's called `n` or more times.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Function
	     * @param {number} n The number of calls before `func` is invoked.
	     * @param {Function} func The function to restrict.
	     * @returns {Function} Returns the new restricted function.
	     * @example
	     *
	     * var saves = ['profile', 'settings'];
	     *
	     * var done = _.after(saves.length, function() {
	     *   console.log('done saving!');
	     * });
	     *
	     * _.forEach(saves, function(type) {
	     *   asyncSave({ 'type': type, 'complete': done });
	     * });
	     * // => Logs 'done saving!' after the two async saves have completed.
	     */
	    function after(n, func) {
	      if (typeof func != 'function') {
	        throw new TypeError(FUNC_ERROR_TEXT);
	      }
	      n = toInteger(n);
	      return function() {
	        if (--n < 1) {
	          return func.apply(this, arguments);
	        }
	      };
	    }

	    /**
	     * Creates a function that invokes `func`, with up to `n` arguments,
	     * ignoring any additional arguments.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Function
	     * @param {Function} func The function to cap arguments for.
	     * @param {number} [n=func.length] The arity cap.
	     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
	     * @returns {Function} Returns the new capped function.
	     * @example
	     *
	     * _.map(['6', '8', '10'], _.ary(parseInt, 1));
	     * // => [6, 8, 10]
	     */
	    function ary(func, n, guard) {
	      n = guard ? undefined$1 : n;
	      n = (func && n == null) ? func.length : n;
	      return createWrap(func, WRAP_ARY_FLAG, undefined$1, undefined$1, undefined$1, undefined$1, n);
	    }

	    /**
	     * Creates a function that invokes `func`, with the `this` binding and arguments
	     * of the created function, while it's called less than `n` times. Subsequent
	     * calls to the created function return the result of the last `func` invocation.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Function
	     * @param {number} n The number of calls at which `func` is no longer invoked.
	     * @param {Function} func The function to restrict.
	     * @returns {Function} Returns the new restricted function.
	     * @example
	     *
	     * jQuery(element).on('click', _.before(5, addContactToList));
	     * // => Allows adding up to 4 contacts to the list.
	     */
	    function before(n, func) {
	      var result;
	      if (typeof func != 'function') {
	        throw new TypeError(FUNC_ERROR_TEXT);
	      }
	      n = toInteger(n);
	      return function() {
	        if (--n > 0) {
	          result = func.apply(this, arguments);
	        }
	        if (n <= 1) {
	          func = undefined$1;
	        }
	        return result;
	      };
	    }

	    /**
	     * Creates a function that invokes `func` with the `this` binding of `thisArg`
	     * and `partials` prepended to the arguments it receives.
	     *
	     * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,
	     * may be used as a placeholder for partially applied arguments.
	     *
	     * **Note:** Unlike native `Function#bind`, this method doesn't set the "length"
	     * property of bound functions.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Function
	     * @param {Function} func The function to bind.
	     * @param {*} thisArg The `this` binding of `func`.
	     * @param {...*} [partials] The arguments to be partially applied.
	     * @returns {Function} Returns the new bound function.
	     * @example
	     *
	     * function greet(greeting, punctuation) {
	     *   return greeting + ' ' + this.user + punctuation;
	     * }
	     *
	     * var object = { 'user': 'fred' };
	     *
	     * var bound = _.bind(greet, object, 'hi');
	     * bound('!');
	     * // => 'hi fred!'
	     *
	     * // Bound with placeholders.
	     * var bound = _.bind(greet, object, _, '!');
	     * bound('hi');
	     * // => 'hi fred!'
	     */
	    var bind = baseRest(function(func, thisArg, partials) {
	      var bitmask = WRAP_BIND_FLAG;
	      if (partials.length) {
	        var holders = replaceHolders(partials, getHolder(bind));
	        bitmask |= WRAP_PARTIAL_FLAG;
	      }
	      return createWrap(func, bitmask, thisArg, partials, holders);
	    });

	    /**
	     * Creates a function that invokes the method at `object[key]` with `partials`
	     * prepended to the arguments it receives.
	     *
	     * This method differs from `_.bind` by allowing bound functions to reference
	     * methods that may be redefined or don't yet exist. See
	     * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)
	     * for more details.
	     *
	     * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic
	     * builds, may be used as a placeholder for partially applied arguments.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.10.0
	     * @category Function
	     * @param {Object} object The object to invoke the method on.
	     * @param {string} key The key of the method.
	     * @param {...*} [partials] The arguments to be partially applied.
	     * @returns {Function} Returns the new bound function.
	     * @example
	     *
	     * var object = {
	     *   'user': 'fred',
	     *   'greet': function(greeting, punctuation) {
	     *     return greeting + ' ' + this.user + punctuation;
	     *   }
	     * };
	     *
	     * var bound = _.bindKey(object, 'greet', 'hi');
	     * bound('!');
	     * // => 'hi fred!'
	     *
	     * object.greet = function(greeting, punctuation) {
	     *   return greeting + 'ya ' + this.user + punctuation;
	     * };
	     *
	     * bound('!');
	     * // => 'hiya fred!'
	     *
	     * // Bound with placeholders.
	     * var bound = _.bindKey(object, 'greet', _, '!');
	     * bound('hi');
	     * // => 'hiya fred!'
	     */
	    var bindKey = baseRest(function(object, key, partials) {
	      var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;
	      if (partials.length) {
	        var holders = replaceHolders(partials, getHolder(bindKey));
	        bitmask |= WRAP_PARTIAL_FLAG;
	      }
	      return createWrap(key, bitmask, object, partials, holders);
	    });

	    /**
	     * Creates a function that accepts arguments of `func` and either invokes
	     * `func` returning its result, if at least `arity` number of arguments have
	     * been provided, or returns a function that accepts the remaining `func`
	     * arguments, and so on. The arity of `func` may be specified if `func.length`
	     * is not sufficient.
	     *
	     * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,
	     * may be used as a placeholder for provided arguments.
	     *
	     * **Note:** This method doesn't set the "length" property of curried functions.
	     *
	     * @static
	     * @memberOf _
	     * @since 2.0.0
	     * @category Function
	     * @param {Function} func The function to curry.
	     * @param {number} [arity=func.length] The arity of `func`.
	     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
	     * @returns {Function} Returns the new curried function.
	     * @example
	     *
	     * var abc = function(a, b, c) {
	     *   return [a, b, c];
	     * };
	     *
	     * var curried = _.curry(abc);
	     *
	     * curried(1)(2)(3);
	     * // => [1, 2, 3]
	     *
	     * curried(1, 2)(3);
	     * // => [1, 2, 3]
	     *
	     * curried(1, 2, 3);
	     * // => [1, 2, 3]
	     *
	     * // Curried with placeholders.
	     * curried(1)(_, 3)(2);
	     * // => [1, 2, 3]
	     */
	    function curry(func, arity, guard) {
	      arity = guard ? undefined$1 : arity;
	      var result = createWrap(func, WRAP_CURRY_FLAG, undefined$1, undefined$1, undefined$1, undefined$1, undefined$1, arity);
	      result.placeholder = curry.placeholder;
	      return result;
	    }

	    /**
	     * This method is like `_.curry` except that arguments are applied to `func`
	     * in the manner of `_.partialRight` instead of `_.partial`.
	     *
	     * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic
	     * builds, may be used as a placeholder for provided arguments.
	     *
	     * **Note:** This method doesn't set the "length" property of curried functions.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Function
	     * @param {Function} func The function to curry.
	     * @param {number} [arity=func.length] The arity of `func`.
	     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
	     * @returns {Function} Returns the new curried function.
	     * @example
	     *
	     * var abc = function(a, b, c) {
	     *   return [a, b, c];
	     * };
	     *
	     * var curried = _.curryRight(abc);
	     *
	     * curried(3)(2)(1);
	     * // => [1, 2, 3]
	     *
	     * curried(2, 3)(1);
	     * // => [1, 2, 3]
	     *
	     * curried(1, 2, 3);
	     * // => [1, 2, 3]
	     *
	     * // Curried with placeholders.
	     * curried(3)(1, _)(2);
	     * // => [1, 2, 3]
	     */
	    function curryRight(func, arity, guard) {
	      arity = guard ? undefined$1 : arity;
	      var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined$1, undefined$1, undefined$1, undefined$1, undefined$1, arity);
	      result.placeholder = curryRight.placeholder;
	      return result;
	    }

	    /**
	     * Creates a debounced function that delays invoking `func` until after `wait`
	     * milliseconds have elapsed since the last time the debounced function was
	     * invoked. The debounced function comes with a `cancel` method to cancel
	     * delayed `func` invocations and a `flush` method to immediately invoke them.
	     * Provide `options` to indicate whether `func` should be invoked on the
	     * leading and/or trailing edge of the `wait` timeout. The `func` is invoked
	     * with the last arguments provided to the debounced function. Subsequent
	     * calls to the debounced function return the result of the last `func`
	     * invocation.
	     *
	     * **Note:** If `leading` and `trailing` options are `true`, `func` is
	     * invoked on the trailing edge of the timeout only if the debounced function
	     * is invoked more than once during the `wait` timeout.
	     *
	     * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
	     * until to the next tick, similar to `setTimeout` with a timeout of `0`.
	     *
	     * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
	     * for details over the differences between `_.debounce` and `_.throttle`.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Function
	     * @param {Function} func The function to debounce.
	     * @param {number} [wait=0] The number of milliseconds to delay.
	     * @param {Object} [options={}] The options object.
	     * @param {boolean} [options.leading=false]
	     *  Specify invoking on the leading edge of the timeout.
	     * @param {number} [options.maxWait]
	     *  The maximum time `func` is allowed to be delayed before it's invoked.
	     * @param {boolean} [options.trailing=true]
	     *  Specify invoking on the trailing edge of the timeout.
	     * @returns {Function} Returns the new debounced function.
	     * @example
	     *
	     * // Avoid costly calculations while the window size is in flux.
	     * jQuery(window).on('resize', _.debounce(calculateLayout, 150));
	     *
	     * // Invoke `sendMail` when clicked, debouncing subsequent calls.
	     * jQuery(element).on('click', _.debounce(sendMail, 300, {
	     *   'leading': true,
	     *   'trailing': false
	     * }));
	     *
	     * // Ensure `batchLog` is invoked once after 1 second of debounced calls.
	     * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });
	     * var source = new EventSource('/stream');
	     * jQuery(source).on('message', debounced);
	     *
	     * // Cancel the trailing debounced invocation.
	     * jQuery(window).on('popstate', debounced.cancel);
	     */
	    function debounce(func, wait, options) {
	      var lastArgs,
	          lastThis,
	          maxWait,
	          result,
	          timerId,
	          lastCallTime,
	          lastInvokeTime = 0,
	          leading = false,
	          maxing = false,
	          trailing = true;

	      if (typeof func != 'function') {
	        throw new TypeError(FUNC_ERROR_TEXT);
	      }
	      wait = toNumber(wait) || 0;
	      if (isObject(options)) {
	        leading = !!options.leading;
	        maxing = 'maxWait' in options;
	        maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;
	        trailing = 'trailing' in options ? !!options.trailing : trailing;
	      }

	      function invokeFunc(time) {
	        var args = lastArgs,
	            thisArg = lastThis;

	        lastArgs = lastThis = undefined$1;
	        lastInvokeTime = time;
	        result = func.apply(thisArg, args);
	        return result;
	      }

	      function leadingEdge(time) {
	        // Reset any `maxWait` timer.
	        lastInvokeTime = time;
	        // Start the timer for the trailing edge.
	        timerId = setTimeout(timerExpired, wait);
	        // Invoke the leading edge.
	        return leading ? invokeFunc(time) : result;
	      }

	      function remainingWait(time) {
	        var timeSinceLastCall = time - lastCallTime,
	            timeSinceLastInvoke = time - lastInvokeTime,
	            timeWaiting = wait - timeSinceLastCall;

	        return maxing
	          ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)
	          : timeWaiting;
	      }

	      function shouldInvoke(time) {
	        var timeSinceLastCall = time - lastCallTime,
	            timeSinceLastInvoke = time - lastInvokeTime;

	        // Either this is the first call, activity has stopped and we're at the
	        // trailing edge, the system time has gone backwards and we're treating
	        // it as the trailing edge, or we've hit the `maxWait` limit.
	        return (lastCallTime === undefined$1 || (timeSinceLastCall >= wait) ||
	          (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));
	      }

	      function timerExpired() {
	        var time = now();
	        if (shouldInvoke(time)) {
	          return trailingEdge(time);
	        }
	        // Restart the timer.
	        timerId = setTimeout(timerExpired, remainingWait(time));
	      }

	      function trailingEdge(time) {
	        timerId = undefined$1;

	        // Only invoke if we have `lastArgs` which means `func` has been
	        // debounced at least once.
	        if (trailing && lastArgs) {
	          return invokeFunc(time);
	        }
	        lastArgs = lastThis = undefined$1;
	        return result;
	      }

	      function cancel() {
	        if (timerId !== undefined$1) {
	          clearTimeout(timerId);
	        }
	        lastInvokeTime = 0;
	        lastArgs = lastCallTime = lastThis = timerId = undefined$1;
	      }

	      function flush() {
	        return timerId === undefined$1 ? result : trailingEdge(now());
	      }

	      function debounced() {
	        var time = now(),
	            isInvoking = shouldInvoke(time);

	        lastArgs = arguments;
	        lastThis = this;
	        lastCallTime = time;

	        if (isInvoking) {
	          if (timerId === undefined$1) {
	            return leadingEdge(lastCallTime);
	          }
	          if (maxing) {
	            // Handle invocations in a tight loop.
	            timerId = setTimeout(timerExpired, wait);
	            return invokeFunc(lastCallTime);
	          }
	        }
	        if (timerId === undefined$1) {
	          timerId = setTimeout(timerExpired, wait);
	        }
	        return result;
	      }
	      debounced.cancel = cancel;
	      debounced.flush = flush;
	      return debounced;
	    }

	    /**
	     * Defers invoking the `func` until the current call stack has cleared. Any
	     * additional arguments are provided to `func` when it's invoked.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Function
	     * @param {Function} func The function to defer.
	     * @param {...*} [args] The arguments to invoke `func` with.
	     * @returns {number} Returns the timer id.
	     * @example
	     *
	     * _.defer(function(text) {
	     *   console.log(text);
	     * }, 'deferred');
	     * // => Logs 'deferred' after one millisecond.
	     */
	    var defer = baseRest(function(func, args) {
	      return baseDelay(func, 1, args);
	    });

	    /**
	     * Invokes `func` after `wait` milliseconds. Any additional arguments are
	     * provided to `func` when it's invoked.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Function
	     * @param {Function} func The function to delay.
	     * @param {number} wait The number of milliseconds to delay invocation.
	     * @param {...*} [args] The arguments to invoke `func` with.
	     * @returns {number} Returns the timer id.
	     * @example
	     *
	     * _.delay(function(text) {
	     *   console.log(text);
	     * }, 1000, 'later');
	     * // => Logs 'later' after one second.
	     */
	    var delay = baseRest(function(func, wait, args) {
	      return baseDelay(func, toNumber(wait) || 0, args);
	    });

	    /**
	     * Creates a function that invokes `func` with arguments reversed.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Function
	     * @param {Function} func The function to flip arguments for.
	     * @returns {Function} Returns the new flipped function.
	     * @example
	     *
	     * var flipped = _.flip(function() {
	     *   return _.toArray(arguments);
	     * });
	     *
	     * flipped('a', 'b', 'c', 'd');
	     * // => ['d', 'c', 'b', 'a']
	     */
	    function flip(func) {
	      return createWrap(func, WRAP_FLIP_FLAG);
	    }

	    /**
	     * Creates a function that memoizes the result of `func`. If `resolver` is
	     * provided, it determines the cache key for storing the result based on the
	     * arguments provided to the memoized function. By default, the first argument
	     * provided to the memoized function is used as the map cache key. The `func`
	     * is invoked with the `this` binding of the memoized function.
	     *
	     * **Note:** The cache is exposed as the `cache` property on the memoized
	     * function. Its creation may be customized by replacing the `_.memoize.Cache`
	     * constructor with one whose instances implement the
	     * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)
	     * method interface of `clear`, `delete`, `get`, `has`, and `set`.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Function
	     * @param {Function} func The function to have its output memoized.
	     * @param {Function} [resolver] The function to resolve the cache key.
	     * @returns {Function} Returns the new memoized function.
	     * @example
	     *
	     * var object = { 'a': 1, 'b': 2 };
	     * var other = { 'c': 3, 'd': 4 };
	     *
	     * var values = _.memoize(_.values);
	     * values(object);
	     * // => [1, 2]
	     *
	     * values(other);
	     * // => [3, 4]
	     *
	     * object.a = 2;
	     * values(object);
	     * // => [1, 2]
	     *
	     * // Modify the result cache.
	     * values.cache.set(object, ['a', 'b']);
	     * values(object);
	     * // => ['a', 'b']
	     *
	     * // Replace `_.memoize.Cache`.
	     * _.memoize.Cache = WeakMap;
	     */
	    function memoize(func, resolver) {
	      if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {
	        throw new TypeError(FUNC_ERROR_TEXT);
	      }
	      var memoized = function() {
	        var args = arguments,
	            key = resolver ? resolver.apply(this, args) : args[0],
	            cache = memoized.cache;

	        if (cache.has(key)) {
	          return cache.get(key);
	        }
	        var result = func.apply(this, args);
	        memoized.cache = cache.set(key, result) || cache;
	        return result;
	      };
	      memoized.cache = new (memoize.Cache || MapCache);
	      return memoized;
	    }

	    // Expose `MapCache`.
	    memoize.Cache = MapCache;

	    /**
	     * Creates a function that negates the result of the predicate `func`. The
	     * `func` predicate is invoked with the `this` binding and arguments of the
	     * created function.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Function
	     * @param {Function} predicate The predicate to negate.
	     * @returns {Function} Returns the new negated function.
	     * @example
	     *
	     * function isEven(n) {
	     *   return n % 2 == 0;
	     * }
	     *
	     * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));
	     * // => [1, 3, 5]
	     */
	    function negate(predicate) {
	      if (typeof predicate != 'function') {
	        throw new TypeError(FUNC_ERROR_TEXT);
	      }
	      return function() {
	        var args = arguments;
	        switch (args.length) {
	          case 0: return !predicate.call(this);
	          case 1: return !predicate.call(this, args[0]);
	          case 2: return !predicate.call(this, args[0], args[1]);
	          case 3: return !predicate.call(this, args[0], args[1], args[2]);
	        }
	        return !predicate.apply(this, args);
	      };
	    }

	    /**
	     * Creates a function that is restricted to invoking `func` once. Repeat calls
	     * to the function return the value of the first invocation. The `func` is
	     * invoked with the `this` binding and arguments of the created function.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Function
	     * @param {Function} func The function to restrict.
	     * @returns {Function} Returns the new restricted function.
	     * @example
	     *
	     * var initialize = _.once(createApplication);
	     * initialize();
	     * initialize();
	     * // => `createApplication` is invoked once
	     */
	    function once(func) {
	      return before(2, func);
	    }

	    /**
	     * Creates a function that invokes `func` with its arguments transformed.
	     *
	     * @static
	     * @since 4.0.0
	     * @memberOf _
	     * @category Function
	     * @param {Function} func The function to wrap.
	     * @param {...(Function|Function[])} [transforms=[_.identity]]
	     *  The argument transforms.
	     * @returns {Function} Returns the new function.
	     * @example
	     *
	     * function doubled(n) {
	     *   return n * 2;
	     * }
	     *
	     * function square(n) {
	     *   return n * n;
	     * }
	     *
	     * var func = _.overArgs(function(x, y) {
	     *   return [x, y];
	     * }, [square, doubled]);
	     *
	     * func(9, 3);
	     * // => [81, 6]
	     *
	     * func(10, 5);
	     * // => [100, 10]
	     */
	    var overArgs = castRest(function(func, transforms) {
	      transforms = (transforms.length == 1 && isArray(transforms[0]))
	        ? arrayMap(transforms[0], baseUnary(getIteratee()))
	        : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee()));

	      var funcsLength = transforms.length;
	      return baseRest(function(args) {
	        var index = -1,
	            length = nativeMin(args.length, funcsLength);

	        while (++index < length) {
	          args[index] = transforms[index].call(this, args[index]);
	        }
	        return apply(func, this, args);
	      });
	    });

	    /**
	     * Creates a function that invokes `func` with `partials` prepended to the
	     * arguments it receives. This method is like `_.bind` except it does **not**
	     * alter the `this` binding.
	     *
	     * The `_.partial.placeholder` value, which defaults to `_` in monolithic
	     * builds, may be used as a placeholder for partially applied arguments.
	     *
	     * **Note:** This method doesn't set the "length" property of partially
	     * applied functions.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.2.0
	     * @category Function
	     * @param {Function} func The function to partially apply arguments to.
	     * @param {...*} [partials] The arguments to be partially applied.
	     * @returns {Function} Returns the new partially applied function.
	     * @example
	     *
	     * function greet(greeting, name) {
	     *   return greeting + ' ' + name;
	     * }
	     *
	     * var sayHelloTo = _.partial(greet, 'hello');
	     * sayHelloTo('fred');
	     * // => 'hello fred'
	     *
	     * // Partially applied with placeholders.
	     * var greetFred = _.partial(greet, _, 'fred');
	     * greetFred('hi');
	     * // => 'hi fred'
	     */
	    var partial = baseRest(function(func, partials) {
	      var holders = replaceHolders(partials, getHolder(partial));
	      return createWrap(func, WRAP_PARTIAL_FLAG, undefined$1, partials, holders);
	    });

	    /**
	     * This method is like `_.partial` except that partially applied arguments
	     * are appended to the arguments it receives.
	     *
	     * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic
	     * builds, may be used as a placeholder for partially applied arguments.
	     *
	     * **Note:** This method doesn't set the "length" property of partially
	     * applied functions.
	     *
	     * @static
	     * @memberOf _
	     * @since 1.0.0
	     * @category Function
	     * @param {Function} func The function to partially apply arguments to.
	     * @param {...*} [partials] The arguments to be partially applied.
	     * @returns {Function} Returns the new partially applied function.
	     * @example
	     *
	     * function greet(greeting, name) {
	     *   return greeting + ' ' + name;
	     * }
	     *
	     * var greetFred = _.partialRight(greet, 'fred');
	     * greetFred('hi');
	     * // => 'hi fred'
	     *
	     * // Partially applied with placeholders.
	     * var sayHelloTo = _.partialRight(greet, 'hello', _);
	     * sayHelloTo('fred');
	     * // => 'hello fred'
	     */
	    var partialRight = baseRest(function(func, partials) {
	      var holders = replaceHolders(partials, getHolder(partialRight));
	      return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined$1, partials, holders);
	    });

	    /**
	     * Creates a function that invokes `func` with arguments arranged according
	     * to the specified `indexes` where the argument value at the first index is
	     * provided as the first argument, the argument value at the second index is
	     * provided as the second argument, and so on.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Function
	     * @param {Function} func The function to rearrange arguments for.
	     * @param {...(number|number[])} indexes The arranged argument indexes.
	     * @returns {Function} Returns the new function.
	     * @example
	     *
	     * var rearged = _.rearg(function(a, b, c) {
	     *   return [a, b, c];
	     * }, [2, 0, 1]);
	     *
	     * rearged('b', 'c', 'a')
	     * // => ['a', 'b', 'c']
	     */
	    var rearg = flatRest(function(func, indexes) {
	      return createWrap(func, WRAP_REARG_FLAG, undefined$1, undefined$1, undefined$1, indexes);
	    });

	    /**
	     * Creates a function that invokes `func` with the `this` binding of the
	     * created function and arguments from `start` and beyond provided as
	     * an array.
	     *
	     * **Note:** This method is based on the
	     * [rest parameter](https://mdn.io/rest_parameters).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Function
	     * @param {Function} func The function to apply a rest parameter to.
	     * @param {number} [start=func.length-1] The start position of the rest parameter.
	     * @returns {Function} Returns the new function.
	     * @example
	     *
	     * var say = _.rest(function(what, names) {
	     *   return what + ' ' + _.initial(names).join(', ') +
	     *     (_.size(names) > 1 ? ', & ' : '') + _.last(names);
	     * });
	     *
	     * say('hello', 'fred', 'barney', 'pebbles');
	     * // => 'hello fred, barney, & pebbles'
	     */
	    function rest(func, start) {
	      if (typeof func != 'function') {
	        throw new TypeError(FUNC_ERROR_TEXT);
	      }
	      start = start === undefined$1 ? start : toInteger(start);
	      return baseRest(func, start);
	    }

	    /**
	     * Creates a function that invokes `func` with the `this` binding of the
	     * create function and an array of arguments much like
	     * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).
	     *
	     * **Note:** This method is based on the
	     * [spread operator](https://mdn.io/spread_operator).
	     *
	     * @static
	     * @memberOf _
	     * @since 3.2.0
	     * @category Function
	     * @param {Function} func The function to spread arguments over.
	     * @param {number} [start=0] The start position of the spread.
	     * @returns {Function} Returns the new function.
	     * @example
	     *
	     * var say = _.spread(function(who, what) {
	     *   return who + ' says ' + what;
	     * });
	     *
	     * say(['fred', 'hello']);
	     * // => 'fred says hello'
	     *
	     * var numbers = Promise.all([
	     *   Promise.resolve(40),
	     *   Promise.resolve(36)
	     * ]);
	     *
	     * numbers.then(_.spread(function(x, y) {
	     *   return x + y;
	     * }));
	     * // => a Promise of 76
	     */
	    function spread(func, start) {
	      if (typeof func != 'function') {
	        throw new TypeError(FUNC_ERROR_TEXT);
	      }
	      start = start == null ? 0 : nativeMax(toInteger(start), 0);
	      return baseRest(function(args) {
	        var array = args[start],
	            otherArgs = castSlice(args, 0, start);

	        if (array) {
	          arrayPush(otherArgs, array);
	        }
	        return apply(func, this, otherArgs);
	      });
	    }

	    /**
	     * Creates a throttled function that only invokes `func` at most once per
	     * every `wait` milliseconds. The throttled function comes with a `cancel`
	     * method to cancel delayed `func` invocations and a `flush` method to
	     * immediately invoke them. Provide `options` to indicate whether `func`
	     * should be invoked on the leading and/or trailing edge of the `wait`
	     * timeout. The `func` is invoked with the last arguments provided to the
	     * throttled function. Subsequent calls to the throttled function return the
	     * result of the last `func` invocation.
	     *
	     * **Note:** If `leading` and `trailing` options are `true`, `func` is
	     * invoked on the trailing edge of the timeout only if the throttled function
	     * is invoked more than once during the `wait` timeout.
	     *
	     * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
	     * until to the next tick, similar to `setTimeout` with a timeout of `0`.
	     *
	     * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
	     * for details over the differences between `_.throttle` and `_.debounce`.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Function
	     * @param {Function} func The function to throttle.
	     * @param {number} [wait=0] The number of milliseconds to throttle invocations to.
	     * @param {Object} [options={}] The options object.
	     * @param {boolean} [options.leading=true]
	     *  Specify invoking on the leading edge of the timeout.
	     * @param {boolean} [options.trailing=true]
	     *  Specify invoking on the trailing edge of the timeout.
	     * @returns {Function} Returns the new throttled function.
	     * @example
	     *
	     * // Avoid excessively updating the position while scrolling.
	     * jQuery(window).on('scroll', _.throttle(updatePosition, 100));
	     *
	     * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.
	     * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });
	     * jQuery(element).on('click', throttled);
	     *
	     * // Cancel the trailing throttled invocation.
	     * jQuery(window).on('popstate', throttled.cancel);
	     */
	    function throttle(func, wait, options) {
	      var leading = true,
	          trailing = true;

	      if (typeof func != 'function') {
	        throw new TypeError(FUNC_ERROR_TEXT);
	      }
	      if (isObject(options)) {
	        leading = 'leading' in options ? !!options.leading : leading;
	        trailing = 'trailing' in options ? !!options.trailing : trailing;
	      }
	      return debounce(func, wait, {
	        'leading': leading,
	        'maxWait': wait,
	        'trailing': trailing
	      });
	    }

	    /**
	     * Creates a function that accepts up to one argument, ignoring any
	     * additional arguments.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Function
	     * @param {Function} func The function to cap arguments for.
	     * @returns {Function} Returns the new capped function.
	     * @example
	     *
	     * _.map(['6', '8', '10'], _.unary(parseInt));
	     * // => [6, 8, 10]
	     */
	    function unary(func) {
	      return ary(func, 1);
	    }

	    /**
	     * Creates a function that provides `value` to `wrapper` as its first
	     * argument. Any additional arguments provided to the function are appended
	     * to those provided to the `wrapper`. The wrapper is invoked with the `this`
	     * binding of the created function.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Function
	     * @param {*} value The value to wrap.
	     * @param {Function} [wrapper=identity] The wrapper function.
	     * @returns {Function} Returns the new function.
	     * @example
	     *
	     * var p = _.wrap(_.escape, function(func, text) {
	     *   return '<p>' + func(text) + '</p>';
	     * });
	     *
	     * p('fred, barney, & pebbles');
	     * // => '<p>fred, barney, &amp; pebbles</p>'
	     */
	    function wrap(value, wrapper) {
	      return partial(castFunction(wrapper), value);
	    }

	    /*------------------------------------------------------------------------*/

	    /**
	     * Casts `value` as an array if it's not one.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.4.0
	     * @category Lang
	     * @param {*} value The value to inspect.
	     * @returns {Array} Returns the cast array.
	     * @example
	     *
	     * _.castArray(1);
	     * // => [1]
	     *
	     * _.castArray({ 'a': 1 });
	     * // => [{ 'a': 1 }]
	     *
	     * _.castArray('abc');
	     * // => ['abc']
	     *
	     * _.castArray(null);
	     * // => [null]
	     *
	     * _.castArray(undefined);
	     * // => [undefined]
	     *
	     * _.castArray();
	     * // => []
	     *
	     * var array = [1, 2, 3];
	     * console.log(_.castArray(array) === array);
	     * // => true
	     */
	    function castArray() {
	      if (!arguments.length) {
	        return [];
	      }
	      var value = arguments[0];
	      return isArray(value) ? value : [value];
	    }

	    /**
	     * Creates a shallow clone of `value`.
	     *
	     * **Note:** This method is loosely based on the
	     * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)
	     * and supports cloning arrays, array buffers, booleans, date objects, maps,
	     * numbers, `Object` objects, regexes, sets, strings, symbols, and typed
	     * arrays. The own enumerable properties of `arguments` objects are cloned
	     * as plain objects. An empty object is returned for uncloneable values such
	     * as error objects, functions, DOM nodes, and WeakMaps.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Lang
	     * @param {*} value The value to clone.
	     * @returns {*} Returns the cloned value.
	     * @see _.cloneDeep
	     * @example
	     *
	     * var objects = [{ 'a': 1 }, { 'b': 2 }];
	     *
	     * var shallow = _.clone(objects);
	     * console.log(shallow[0] === objects[0]);
	     * // => true
	     */
	    function clone(value) {
	      return baseClone(value, CLONE_SYMBOLS_FLAG);
	    }

	    /**
	     * This method is like `_.clone` except that it accepts `customizer` which
	     * is invoked to produce the cloned value. If `customizer` returns `undefined`,
	     * cloning is handled by the method instead. The `customizer` is invoked with
	     * up to four arguments; (value [, index|key, object, stack]).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Lang
	     * @param {*} value The value to clone.
	     * @param {Function} [customizer] The function to customize cloning.
	     * @returns {*} Returns the cloned value.
	     * @see _.cloneDeepWith
	     * @example
	     *
	     * function customizer(value) {
	     *   if (_.isElement(value)) {
	     *     return value.cloneNode(false);
	     *   }
	     * }
	     *
	     * var el = _.cloneWith(document.body, customizer);
	     *
	     * console.log(el === document.body);
	     * // => false
	     * console.log(el.nodeName);
	     * // => 'BODY'
	     * console.log(el.childNodes.length);
	     * // => 0
	     */
	    function cloneWith(value, customizer) {
	      customizer = typeof customizer == 'function' ? customizer : undefined$1;
	      return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);
	    }

	    /**
	     * This method is like `_.clone` except that it recursively clones `value`.
	     *
	     * @static
	     * @memberOf _
	     * @since 1.0.0
	     * @category Lang
	     * @param {*} value The value to recursively clone.
	     * @returns {*} Returns the deep cloned value.
	     * @see _.clone
	     * @example
	     *
	     * var objects = [{ 'a': 1 }, { 'b': 2 }];
	     *
	     * var deep = _.cloneDeep(objects);
	     * console.log(deep[0] === objects[0]);
	     * // => false
	     */
	    function cloneDeep(value) {
	      return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);
	    }

	    /**
	     * This method is like `_.cloneWith` except that it recursively clones `value`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Lang
	     * @param {*} value The value to recursively clone.
	     * @param {Function} [customizer] The function to customize cloning.
	     * @returns {*} Returns the deep cloned value.
	     * @see _.cloneWith
	     * @example
	     *
	     * function customizer(value) {
	     *   if (_.isElement(value)) {
	     *     return value.cloneNode(true);
	     *   }
	     * }
	     *
	     * var el = _.cloneDeepWith(document.body, customizer);
	     *
	     * console.log(el === document.body);
	     * // => false
	     * console.log(el.nodeName);
	     * // => 'BODY'
	     * console.log(el.childNodes.length);
	     * // => 20
	     */
	    function cloneDeepWith(value, customizer) {
	      customizer = typeof customizer == 'function' ? customizer : undefined$1;
	      return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);
	    }

	    /**
	     * Checks if `object` conforms to `source` by invoking the predicate
	     * properties of `source` with the corresponding property values of `object`.
	     *
	     * **Note:** This method is equivalent to `_.conforms` when `source` is
	     * partially applied.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.14.0
	     * @category Lang
	     * @param {Object} object The object to inspect.
	     * @param {Object} source The object of property predicates to conform to.
	     * @returns {boolean} Returns `true` if `object` conforms, else `false`.
	     * @example
	     *
	     * var object = { 'a': 1, 'b': 2 };
	     *
	     * _.conformsTo(object, { 'b': function(n) { return n > 1; } });
	     * // => true
	     *
	     * _.conformsTo(object, { 'b': function(n) { return n > 2; } });
	     * // => false
	     */
	    function conformsTo(object, source) {
	      return source == null || baseConformsTo(object, source, keys(source));
	    }

	    /**
	     * Performs a
	     * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
	     * comparison between two values to determine if they are equivalent.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Lang
	     * @param {*} value The value to compare.
	     * @param {*} other The other value to compare.
	     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
	     * @example
	     *
	     * var object = { 'a': 1 };
	     * var other = { 'a': 1 };
	     *
	     * _.eq(object, object);
	     * // => true
	     *
	     * _.eq(object, other);
	     * // => false
	     *
	     * _.eq('a', 'a');
	     * // => true
	     *
	     * _.eq('a', Object('a'));
	     * // => false
	     *
	     * _.eq(NaN, NaN);
	     * // => true
	     */
	    function eq(value, other) {
	      return value === other || (value !== value && other !== other);
	    }

	    /**
	     * Checks if `value` is greater than `other`.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.9.0
	     * @category Lang
	     * @param {*} value The value to compare.
	     * @param {*} other The other value to compare.
	     * @returns {boolean} Returns `true` if `value` is greater than `other`,
	     *  else `false`.
	     * @see _.lt
	     * @example
	     *
	     * _.gt(3, 1);
	     * // => true
	     *
	     * _.gt(3, 3);
	     * // => false
	     *
	     * _.gt(1, 3);
	     * // => false
	     */
	    var gt = createRelationalOperation(baseGt);

	    /**
	     * Checks if `value` is greater than or equal to `other`.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.9.0
	     * @category Lang
	     * @param {*} value The value to compare.
	     * @param {*} other The other value to compare.
	     * @returns {boolean} Returns `true` if `value` is greater than or equal to
	     *  `other`, else `false`.
	     * @see _.lte
	     * @example
	     *
	     * _.gte(3, 1);
	     * // => true
	     *
	     * _.gte(3, 3);
	     * // => true
	     *
	     * _.gte(1, 3);
	     * // => false
	     */
	    var gte = createRelationalOperation(function(value, other) {
	      return value >= other;
	    });

	    /**
	     * Checks if `value` is likely an `arguments` object.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is an `arguments` object,
	     *  else `false`.
	     * @example
	     *
	     * _.isArguments(function() { return arguments; }());
	     * // => true
	     *
	     * _.isArguments([1, 2, 3]);
	     * // => false
	     */
	    var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {
	      return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&
	        !propertyIsEnumerable.call(value, 'callee');
	    };

	    /**
	     * Checks if `value` is classified as an `Array` object.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is an array, else `false`.
	     * @example
	     *
	     * _.isArray([1, 2, 3]);
	     * // => true
	     *
	     * _.isArray(document.body.children);
	     * // => false
	     *
	     * _.isArray('abc');
	     * // => false
	     *
	     * _.isArray(_.noop);
	     * // => false
	     */
	    var isArray = Array.isArray;

	    /**
	     * Checks if `value` is classified as an `ArrayBuffer` object.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.3.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
	     * @example
	     *
	     * _.isArrayBuffer(new ArrayBuffer(2));
	     * // => true
	     *
	     * _.isArrayBuffer(new Array(2));
	     * // => false
	     */
	    var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;

	    /**
	     * Checks if `value` is array-like. A value is considered array-like if it's
	     * not a function and has a `value.length` that's an integer greater than or
	     * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
	     * @example
	     *
	     * _.isArrayLike([1, 2, 3]);
	     * // => true
	     *
	     * _.isArrayLike(document.body.children);
	     * // => true
	     *
	     * _.isArrayLike('abc');
	     * // => true
	     *
	     * _.isArrayLike(_.noop);
	     * // => false
	     */
	    function isArrayLike(value) {
	      return value != null && isLength(value.length) && !isFunction(value);
	    }

	    /**
	     * This method is like `_.isArrayLike` except that it also checks if `value`
	     * is an object.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is an array-like object,
	     *  else `false`.
	     * @example
	     *
	     * _.isArrayLikeObject([1, 2, 3]);
	     * // => true
	     *
	     * _.isArrayLikeObject(document.body.children);
	     * // => true
	     *
	     * _.isArrayLikeObject('abc');
	     * // => false
	     *
	     * _.isArrayLikeObject(_.noop);
	     * // => false
	     */
	    function isArrayLikeObject(value) {
	      return isObjectLike(value) && isArrayLike(value);
	    }

	    /**
	     * Checks if `value` is classified as a boolean primitive or object.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a boolean, else `false`.
	     * @example
	     *
	     * _.isBoolean(false);
	     * // => true
	     *
	     * _.isBoolean(null);
	     * // => false
	     */
	    function isBoolean(value) {
	      return value === true || value === false ||
	        (isObjectLike(value) && baseGetTag(value) == boolTag);
	    }

	    /**
	     * Checks if `value` is a buffer.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.3.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.
	     * @example
	     *
	     * _.isBuffer(new Buffer(2));
	     * // => true
	     *
	     * _.isBuffer(new Uint8Array(2));
	     * // => false
	     */
	    var isBuffer = nativeIsBuffer || stubFalse;

	    /**
	     * Checks if `value` is classified as a `Date` object.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
	     * @example
	     *
	     * _.isDate(new Date);
	     * // => true
	     *
	     * _.isDate('Mon April 23 2012');
	     * // => false
	     */
	    var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;

	    /**
	     * Checks if `value` is likely a DOM element.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.
	     * @example
	     *
	     * _.isElement(document.body);
	     * // => true
	     *
	     * _.isElement('<body>');
	     * // => false
	     */
	    function isElement(value) {
	      return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);
	    }

	    /**
	     * Checks if `value` is an empty object, collection, map, or set.
	     *
	     * Objects are considered empty if they have no own enumerable string keyed
	     * properties.
	     *
	     * Array-like values such as `arguments` objects, arrays, buffers, strings, or
	     * jQuery-like collections are considered empty if they have a `length` of `0`.
	     * Similarly, maps and sets are considered empty if they have a `size` of `0`.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is empty, else `false`.
	     * @example
	     *
	     * _.isEmpty(null);
	     * // => true
	     *
	     * _.isEmpty(true);
	     * // => true
	     *
	     * _.isEmpty(1);
	     * // => true
	     *
	     * _.isEmpty([1, 2, 3]);
	     * // => false
	     *
	     * _.isEmpty({ 'a': 1 });
	     * // => false
	     */
	    function isEmpty(value) {
	      if (value == null) {
	        return true;
	      }
	      if (isArrayLike(value) &&
	          (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' ||
	            isBuffer(value) || isTypedArray(value) || isArguments(value))) {
	        return !value.length;
	      }
	      var tag = getTag(value);
	      if (tag == mapTag || tag == setTag) {
	        return !value.size;
	      }
	      if (isPrototype(value)) {
	        return !baseKeys(value).length;
	      }
	      for (var key in value) {
	        if (hasOwnProperty.call(value, key)) {
	          return false;
	        }
	      }
	      return true;
	    }

	    /**
	     * Performs a deep comparison between two values to determine if they are
	     * equivalent.
	     *
	     * **Note:** This method supports comparing arrays, array buffers, booleans,
	     * date objects, error objects, maps, numbers, `Object` objects, regexes,
	     * sets, strings, symbols, and typed arrays. `Object` objects are compared
	     * by their own, not inherited, enumerable properties. Functions and DOM
	     * nodes are compared by strict equality, i.e. `===`.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Lang
	     * @param {*} value The value to compare.
	     * @param {*} other The other value to compare.
	     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
	     * @example
	     *
	     * var object = { 'a': 1 };
	     * var other = { 'a': 1 };
	     *
	     * _.isEqual(object, other);
	     * // => true
	     *
	     * object === other;
	     * // => false
	     */
	    function isEqual(value, other) {
	      return baseIsEqual(value, other);
	    }

	    /**
	     * This method is like `_.isEqual` except that it accepts `customizer` which
	     * is invoked to compare values. If `customizer` returns `undefined`, comparisons
	     * are handled by the method instead. The `customizer` is invoked with up to
	     * six arguments: (objValue, othValue [, index|key, object, other, stack]).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Lang
	     * @param {*} value The value to compare.
	     * @param {*} other The other value to compare.
	     * @param {Function} [customizer] The function to customize comparisons.
	     * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
	     * @example
	     *
	     * function isGreeting(value) {
	     *   return /^h(?:i|ello)$/.test(value);
	     * }
	     *
	     * function customizer(objValue, othValue) {
	     *   if (isGreeting(objValue) && isGreeting(othValue)) {
	     *     return true;
	     *   }
	     * }
	     *
	     * var array = ['hello', 'goodbye'];
	     * var other = ['hi', 'goodbye'];
	     *
	     * _.isEqualWith(array, other, customizer);
	     * // => true
	     */
	    function isEqualWith(value, other, customizer) {
	      customizer = typeof customizer == 'function' ? customizer : undefined$1;
	      var result = customizer ? customizer(value, other) : undefined$1;
	      return result === undefined$1 ? baseIsEqual(value, other, undefined$1, customizer) : !!result;
	    }

	    /**
	     * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,
	     * `SyntaxError`, `TypeError`, or `URIError` object.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is an error object, else `false`.
	     * @example
	     *
	     * _.isError(new Error);
	     * // => true
	     *
	     * _.isError(Error);
	     * // => false
	     */
	    function isError(value) {
	      if (!isObjectLike(value)) {
	        return false;
	      }
	      var tag = baseGetTag(value);
	      return tag == errorTag || tag == domExcTag ||
	        (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value));
	    }

	    /**
	     * Checks if `value` is a finite primitive number.
	     *
	     * **Note:** This method is based on
	     * [`Number.isFinite`](https://mdn.io/Number/isFinite).
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.
	     * @example
	     *
	     * _.isFinite(3);
	     * // => true
	     *
	     * _.isFinite(Number.MIN_VALUE);
	     * // => true
	     *
	     * _.isFinite(Infinity);
	     * // => false
	     *
	     * _.isFinite('3');
	     * // => false
	     */
	    function isFinite(value) {
	      return typeof value == 'number' && nativeIsFinite(value);
	    }

	    /**
	     * Checks if `value` is classified as a `Function` object.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a function, else `false`.
	     * @example
	     *
	     * _.isFunction(_);
	     * // => true
	     *
	     * _.isFunction(/abc/);
	     * // => false
	     */
	    function isFunction(value) {
	      if (!isObject(value)) {
	        return false;
	      }
	      // The use of `Object#toString` avoids issues with the `typeof` operator
	      // in Safari 9 which returns 'object' for typed arrays and other constructors.
	      var tag = baseGetTag(value);
	      return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;
	    }

	    /**
	     * Checks if `value` is an integer.
	     *
	     * **Note:** This method is based on
	     * [`Number.isInteger`](https://mdn.io/Number/isInteger).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is an integer, else `false`.
	     * @example
	     *
	     * _.isInteger(3);
	     * // => true
	     *
	     * _.isInteger(Number.MIN_VALUE);
	     * // => false
	     *
	     * _.isInteger(Infinity);
	     * // => false
	     *
	     * _.isInteger('3');
	     * // => false
	     */
	    function isInteger(value) {
	      return typeof value == 'number' && value == toInteger(value);
	    }

	    /**
	     * Checks if `value` is a valid array-like length.
	     *
	     * **Note:** This method is loosely based on
	     * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
	     * @example
	     *
	     * _.isLength(3);
	     * // => true
	     *
	     * _.isLength(Number.MIN_VALUE);
	     * // => false
	     *
	     * _.isLength(Infinity);
	     * // => false
	     *
	     * _.isLength('3');
	     * // => false
	     */
	    function isLength(value) {
	      return typeof value == 'number' &&
	        value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
	    }

	    /**
	     * Checks if `value` is the
	     * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
	     * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is an object, else `false`.
	     * @example
	     *
	     * _.isObject({});
	     * // => true
	     *
	     * _.isObject([1, 2, 3]);
	     * // => true
	     *
	     * _.isObject(_.noop);
	     * // => true
	     *
	     * _.isObject(null);
	     * // => false
	     */
	    function isObject(value) {
	      var type = typeof value;
	      return value != null && (type == 'object' || type == 'function');
	    }

	    /**
	     * Checks if `value` is object-like. A value is object-like if it's not `null`
	     * and has a `typeof` result of "object".
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
	     * @example
	     *
	     * _.isObjectLike({});
	     * // => true
	     *
	     * _.isObjectLike([1, 2, 3]);
	     * // => true
	     *
	     * _.isObjectLike(_.noop);
	     * // => false
	     *
	     * _.isObjectLike(null);
	     * // => false
	     */
	    function isObjectLike(value) {
	      return value != null && typeof value == 'object';
	    }

	    /**
	     * Checks if `value` is classified as a `Map` object.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.3.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a map, else `false`.
	     * @example
	     *
	     * _.isMap(new Map);
	     * // => true
	     *
	     * _.isMap(new WeakMap);
	     * // => false
	     */
	    var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;

	    /**
	     * Performs a partial deep comparison between `object` and `source` to
	     * determine if `object` contains equivalent property values.
	     *
	     * **Note:** This method is equivalent to `_.matches` when `source` is
	     * partially applied.
	     *
	     * Partial comparisons will match empty array and empty object `source`
	     * values against any array or object value, respectively. See `_.isEqual`
	     * for a list of supported value comparisons.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Lang
	     * @param {Object} object The object to inspect.
	     * @param {Object} source The object of property values to match.
	     * @returns {boolean} Returns `true` if `object` is a match, else `false`.
	     * @example
	     *
	     * var object = { 'a': 1, 'b': 2 };
	     *
	     * _.isMatch(object, { 'b': 2 });
	     * // => true
	     *
	     * _.isMatch(object, { 'b': 1 });
	     * // => false
	     */
	    function isMatch(object, source) {
	      return object === source || baseIsMatch(object, source, getMatchData(source));
	    }

	    /**
	     * This method is like `_.isMatch` except that it accepts `customizer` which
	     * is invoked to compare values. If `customizer` returns `undefined`, comparisons
	     * are handled by the method instead. The `customizer` is invoked with five
	     * arguments: (objValue, srcValue, index|key, object, source).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Lang
	     * @param {Object} object The object to inspect.
	     * @param {Object} source The object of property values to match.
	     * @param {Function} [customizer] The function to customize comparisons.
	     * @returns {boolean} Returns `true` if `object` is a match, else `false`.
	     * @example
	     *
	     * function isGreeting(value) {
	     *   return /^h(?:i|ello)$/.test(value);
	     * }
	     *
	     * function customizer(objValue, srcValue) {
	     *   if (isGreeting(objValue) && isGreeting(srcValue)) {
	     *     return true;
	     *   }
	     * }
	     *
	     * var object = { 'greeting': 'hello' };
	     * var source = { 'greeting': 'hi' };
	     *
	     * _.isMatchWith(object, source, customizer);
	     * // => true
	     */
	    function isMatchWith(object, source, customizer) {
	      customizer = typeof customizer == 'function' ? customizer : undefined$1;
	      return baseIsMatch(object, source, getMatchData(source), customizer);
	    }

	    /**
	     * Checks if `value` is `NaN`.
	     *
	     * **Note:** This method is based on
	     * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as
	     * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for
	     * `undefined` and other non-number values.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
	     * @example
	     *
	     * _.isNaN(NaN);
	     * // => true
	     *
	     * _.isNaN(new Number(NaN));
	     * // => true
	     *
	     * isNaN(undefined);
	     * // => true
	     *
	     * _.isNaN(undefined);
	     * // => false
	     */
	    function isNaN(value) {
	      // An `NaN` primitive is the only value that is not equal to itself.
	      // Perform the `toStringTag` check first to avoid errors with some
	      // ActiveX objects in IE.
	      return isNumber(value) && value != +value;
	    }

	    /**
	     * Checks if `value` is a pristine native function.
	     *
	     * **Note:** This method can't reliably detect native functions in the presence
	     * of the core-js package because core-js circumvents this kind of detection.
	     * Despite multiple requests, the core-js maintainer has made it clear: any
	     * attempt to fix the detection will be obstructed. As a result, we're left
	     * with little choice but to throw an error. Unfortunately, this also affects
	     * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),
	     * which rely on core-js.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a native function,
	     *  else `false`.
	     * @example
	     *
	     * _.isNative(Array.prototype.push);
	     * // => true
	     *
	     * _.isNative(_);
	     * // => false
	     */
	    function isNative(value) {
	      if (isMaskable(value)) {
	        throw new Error(CORE_ERROR_TEXT);
	      }
	      return baseIsNative(value);
	    }

	    /**
	     * Checks if `value` is `null`.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is `null`, else `false`.
	     * @example
	     *
	     * _.isNull(null);
	     * // => true
	     *
	     * _.isNull(void 0);
	     * // => false
	     */
	    function isNull(value) {
	      return value === null;
	    }

	    /**
	     * Checks if `value` is `null` or `undefined`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is nullish, else `false`.
	     * @example
	     *
	     * _.isNil(null);
	     * // => true
	     *
	     * _.isNil(void 0);
	     * // => true
	     *
	     * _.isNil(NaN);
	     * // => false
	     */
	    function isNil(value) {
	      return value == null;
	    }

	    /**
	     * Checks if `value` is classified as a `Number` primitive or object.
	     *
	     * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are
	     * classified as numbers, use the `_.isFinite` method.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a number, else `false`.
	     * @example
	     *
	     * _.isNumber(3);
	     * // => true
	     *
	     * _.isNumber(Number.MIN_VALUE);
	     * // => true
	     *
	     * _.isNumber(Infinity);
	     * // => true
	     *
	     * _.isNumber('3');
	     * // => false
	     */
	    function isNumber(value) {
	      return typeof value == 'number' ||
	        (isObjectLike(value) && baseGetTag(value) == numberTag);
	    }

	    /**
	     * Checks if `value` is a plain object, that is, an object created by the
	     * `Object` constructor or one with a `[[Prototype]]` of `null`.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.8.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
	     * @example
	     *
	     * function Foo() {
	     *   this.a = 1;
	     * }
	     *
	     * _.isPlainObject(new Foo);
	     * // => false
	     *
	     * _.isPlainObject([1, 2, 3]);
	     * // => false
	     *
	     * _.isPlainObject({ 'x': 0, 'y': 0 });
	     * // => true
	     *
	     * _.isPlainObject(Object.create(null));
	     * // => true
	     */
	    function isPlainObject(value) {
	      if (!isObjectLike(value) || baseGetTag(value) != objectTag) {
	        return false;
	      }
	      var proto = getPrototype(value);
	      if (proto === null) {
	        return true;
	      }
	      var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;
	      return typeof Ctor == 'function' && Ctor instanceof Ctor &&
	        funcToString.call(Ctor) == objectCtorString;
	    }

	    /**
	     * Checks if `value` is classified as a `RegExp` object.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.1.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
	     * @example
	     *
	     * _.isRegExp(/abc/);
	     * // => true
	     *
	     * _.isRegExp('/abc/');
	     * // => false
	     */
	    var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;

	    /**
	     * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754
	     * double precision number which isn't the result of a rounded unsafe integer.
	     *
	     * **Note:** This method is based on
	     * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.
	     * @example
	     *
	     * _.isSafeInteger(3);
	     * // => true
	     *
	     * _.isSafeInteger(Number.MIN_VALUE);
	     * // => false
	     *
	     * _.isSafeInteger(Infinity);
	     * // => false
	     *
	     * _.isSafeInteger('3');
	     * // => false
	     */
	    function isSafeInteger(value) {
	      return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;
	    }

	    /**
	     * Checks if `value` is classified as a `Set` object.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.3.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a set, else `false`.
	     * @example
	     *
	     * _.isSet(new Set);
	     * // => true
	     *
	     * _.isSet(new WeakSet);
	     * // => false
	     */
	    var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;

	    /**
	     * Checks if `value` is classified as a `String` primitive or object.
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a string, else `false`.
	     * @example
	     *
	     * _.isString('abc');
	     * // => true
	     *
	     * _.isString(1);
	     * // => false
	     */
	    function isString(value) {
	      return typeof value == 'string' ||
	        (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag);
	    }

	    /**
	     * Checks if `value` is classified as a `Symbol` primitive or object.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
	     * @example
	     *
	     * _.isSymbol(Symbol.iterator);
	     * // => true
	     *
	     * _.isSymbol('abc');
	     * // => false
	     */
	    function isSymbol(value) {
	      return typeof value == 'symbol' ||
	        (isObjectLike(value) && baseGetTag(value) == symbolTag);
	    }

	    /**
	     * Checks if `value` is classified as a typed array.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
	     * @example
	     *
	     * _.isTypedArray(new Uint8Array);
	     * // => true
	     *
	     * _.isTypedArray([]);
	     * // => false
	     */
	    var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;

	    /**
	     * Checks if `value` is `undefined`.
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.
	     * @example
	     *
	     * _.isUndefined(void 0);
	     * // => true
	     *
	     * _.isUndefined(null);
	     * // => false
	     */
	    function isUndefined(value) {
	      return value === undefined$1;
	    }

	    /**
	     * Checks if `value` is classified as a `WeakMap` object.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.3.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a weak map, else `false`.
	     * @example
	     *
	     * _.isWeakMap(new WeakMap);
	     * // => true
	     *
	     * _.isWeakMap(new Map);
	     * // => false
	     */
	    function isWeakMap(value) {
	      return isObjectLike(value) && getTag(value) == weakMapTag;
	    }

	    /**
	     * Checks if `value` is classified as a `WeakSet` object.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.3.0
	     * @category Lang
	     * @param {*} value The value to check.
	     * @returns {boolean} Returns `true` if `value` is a weak set, else `false`.
	     * @example
	     *
	     * _.isWeakSet(new WeakSet);
	     * // => true
	     *
	     * _.isWeakSet(new Set);
	     * // => false
	     */
	    function isWeakSet(value) {
	      return isObjectLike(value) && baseGetTag(value) == weakSetTag;
	    }

	    /**
	     * Checks if `value` is less than `other`.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.9.0
	     * @category Lang
	     * @param {*} value The value to compare.
	     * @param {*} other The other value to compare.
	     * @returns {boolean} Returns `true` if `value` is less than `other`,
	     *  else `false`.
	     * @see _.gt
	     * @example
	     *
	     * _.lt(1, 3);
	     * // => true
	     *
	     * _.lt(3, 3);
	     * // => false
	     *
	     * _.lt(3, 1);
	     * // => false
	     */
	    var lt = createRelationalOperation(baseLt);

	    /**
	     * Checks if `value` is less than or equal to `other`.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.9.0
	     * @category Lang
	     * @param {*} value The value to compare.
	     * @param {*} other The other value to compare.
	     * @returns {boolean} Returns `true` if `value` is less than or equal to
	     *  `other`, else `false`.
	     * @see _.gte
	     * @example
	     *
	     * _.lte(1, 3);
	     * // => true
	     *
	     * _.lte(3, 3);
	     * // => true
	     *
	     * _.lte(3, 1);
	     * // => false
	     */
	    var lte = createRelationalOperation(function(value, other) {
	      return value <= other;
	    });

	    /**
	     * Converts `value` to an array.
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category Lang
	     * @param {*} value The value to convert.
	     * @returns {Array} Returns the converted array.
	     * @example
	     *
	     * _.toArray({ 'a': 1, 'b': 2 });
	     * // => [1, 2]
	     *
	     * _.toArray('abc');
	     * // => ['a', 'b', 'c']
	     *
	     * _.toArray(1);
	     * // => []
	     *
	     * _.toArray(null);
	     * // => []
	     */
	    function toArray(value) {
	      if (!value) {
	        return [];
	      }
	      if (isArrayLike(value)) {
	        return isString(value) ? stringToArray(value) : copyArray(value);
	      }
	      if (symIterator && value[symIterator]) {
	        return iteratorToArray(value[symIterator]());
	      }
	      var tag = getTag(value),
	          func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values);

	      return func(value);
	    }

	    /**
	     * Converts `value` to a finite number.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.12.0
	     * @category Lang
	     * @param {*} value The value to convert.
	     * @returns {number} Returns the converted number.
	     * @example
	     *
	     * _.toFinite(3.2);
	     * // => 3.2
	     *
	     * _.toFinite(Number.MIN_VALUE);
	     * // => 5e-324
	     *
	     * _.toFinite(Infinity);
	     * // => 1.7976931348623157e+308
	     *
	     * _.toFinite('3.2');
	     * // => 3.2
	     */
	    function toFinite(value) {
	      if (!value) {
	        return value === 0 ? value : 0;
	      }
	      value = toNumber(value);
	      if (value === INFINITY || value === -INFINITY) {
	        var sign = (value < 0 ? -1 : 1);
	        return sign * MAX_INTEGER;
	      }
	      return value === value ? value : 0;
	    }

	    /**
	     * Converts `value` to an integer.
	     *
	     * **Note:** This method is loosely based on
	     * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Lang
	     * @param {*} value The value to convert.
	     * @returns {number} Returns the converted integer.
	     * @example
	     *
	     * _.toInteger(3.2);
	     * // => 3
	     *
	     * _.toInteger(Number.MIN_VALUE);
	     * // => 0
	     *
	     * _.toInteger(Infinity);
	     * // => 1.7976931348623157e+308
	     *
	     * _.toInteger('3.2');
	     * // => 3
	     */
	    function toInteger(value) {
	      var result = toFinite(value),
	          remainder = result % 1;

	      return result === result ? (remainder ? result - remainder : result) : 0;
	    }

	    /**
	     * Converts `value` to an integer suitable for use as the length of an
	     * array-like object.
	     *
	     * **Note:** This method is based on
	     * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Lang
	     * @param {*} value The value to convert.
	     * @returns {number} Returns the converted integer.
	     * @example
	     *
	     * _.toLength(3.2);
	     * // => 3
	     *
	     * _.toLength(Number.MIN_VALUE);
	     * // => 0
	     *
	     * _.toLength(Infinity);
	     * // => 4294967295
	     *
	     * _.toLength('3.2');
	     * // => 3
	     */
	    function toLength(value) {
	      return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;
	    }

	    /**
	     * Converts `value` to a number.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Lang
	     * @param {*} value The value to process.
	     * @returns {number} Returns the number.
	     * @example
	     *
	     * _.toNumber(3.2);
	     * // => 3.2
	     *
	     * _.toNumber(Number.MIN_VALUE);
	     * // => 5e-324
	     *
	     * _.toNumber(Infinity);
	     * // => Infinity
	     *
	     * _.toNumber('3.2');
	     * // => 3.2
	     */
	    function toNumber(value) {
	      if (typeof value == 'number') {
	        return value;
	      }
	      if (isSymbol(value)) {
	        return NAN;
	      }
	      if (isObject(value)) {
	        var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
	        value = isObject(other) ? (other + '') : other;
	      }
	      if (typeof value != 'string') {
	        return value === 0 ? value : +value;
	      }
	      value = value.replace(reTrim, '');
	      var isBinary = reIsBinary.test(value);
	      return (isBinary || reIsOctal.test(value))
	        ? freeParseInt(value.slice(2), isBinary ? 2 : 8)
	        : (reIsBadHex.test(value) ? NAN : +value);
	    }

	    /**
	     * Converts `value` to a plain object flattening inherited enumerable string
	     * keyed properties of `value` to own properties of the plain object.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Lang
	     * @param {*} value The value to convert.
	     * @returns {Object} Returns the converted plain object.
	     * @example
	     *
	     * function Foo() {
	     *   this.b = 2;
	     * }
	     *
	     * Foo.prototype.c = 3;
	     *
	     * _.assign({ 'a': 1 }, new Foo);
	     * // => { 'a': 1, 'b': 2 }
	     *
	     * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));
	     * // => { 'a': 1, 'b': 2, 'c': 3 }
	     */
	    function toPlainObject(value) {
	      return copyObject(value, keysIn(value));
	    }

	    /**
	     * Converts `value` to a safe integer. A safe integer can be compared and
	     * represented correctly.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Lang
	     * @param {*} value The value to convert.
	     * @returns {number} Returns the converted integer.
	     * @example
	     *
	     * _.toSafeInteger(3.2);
	     * // => 3
	     *
	     * _.toSafeInteger(Number.MIN_VALUE);
	     * // => 0
	     *
	     * _.toSafeInteger(Infinity);
	     * // => 9007199254740991
	     *
	     * _.toSafeInteger('3.2');
	     * // => 3
	     */
	    function toSafeInteger(value) {
	      return value
	        ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)
	        : (value === 0 ? value : 0);
	    }

	    /**
	     * Converts `value` to a string. An empty string is returned for `null`
	     * and `undefined` values. The sign of `-0` is preserved.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Lang
	     * @param {*} value The value to convert.
	     * @returns {string} Returns the converted string.
	     * @example
	     *
	     * _.toString(null);
	     * // => ''
	     *
	     * _.toString(-0);
	     * // => '-0'
	     *
	     * _.toString([1, 2, 3]);
	     * // => '1,2,3'
	     */
	    function toString(value) {
	      return value == null ? '' : baseToString(value);
	    }

	    /*------------------------------------------------------------------------*/

	    /**
	     * Assigns own enumerable string keyed properties of source objects to the
	     * destination object. Source objects are applied from left to right.
	     * Subsequent sources overwrite property assignments of previous sources.
	     *
	     * **Note:** This method mutates `object` and is loosely based on
	     * [`Object.assign`](https://mdn.io/Object/assign).
	     *
	     * @static
	     * @memberOf _
	     * @since 0.10.0
	     * @category Object
	     * @param {Object} object The destination object.
	     * @param {...Object} [sources] The source objects.
	     * @returns {Object} Returns `object`.
	     * @see _.assignIn
	     * @example
	     *
	     * function Foo() {
	     *   this.a = 1;
	     * }
	     *
	     * function Bar() {
	     *   this.c = 3;
	     * }
	     *
	     * Foo.prototype.b = 2;
	     * Bar.prototype.d = 4;
	     *
	     * _.assign({ 'a': 0 }, new Foo, new Bar);
	     * // => { 'a': 1, 'c': 3 }
	     */
	    var assign = createAssigner(function(object, source) {
	      if (isPrototype(source) || isArrayLike(source)) {
	        copyObject(source, keys(source), object);
	        return;
	      }
	      for (var key in source) {
	        if (hasOwnProperty.call(source, key)) {
	          assignValue(object, key, source[key]);
	        }
	      }
	    });

	    /**
	     * This method is like `_.assign` except that it iterates over own and
	     * inherited source properties.
	     *
	     * **Note:** This method mutates `object`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @alias extend
	     * @category Object
	     * @param {Object} object The destination object.
	     * @param {...Object} [sources] The source objects.
	     * @returns {Object} Returns `object`.
	     * @see _.assign
	     * @example
	     *
	     * function Foo() {
	     *   this.a = 1;
	     * }
	     *
	     * function Bar() {
	     *   this.c = 3;
	     * }
	     *
	     * Foo.prototype.b = 2;
	     * Bar.prototype.d = 4;
	     *
	     * _.assignIn({ 'a': 0 }, new Foo, new Bar);
	     * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }
	     */
	    var assignIn = createAssigner(function(object, source) {
	      copyObject(source, keysIn(source), object);
	    });

	    /**
	     * This method is like `_.assignIn` except that it accepts `customizer`
	     * which is invoked to produce the assigned values. If `customizer` returns
	     * `undefined`, assignment is handled by the method instead. The `customizer`
	     * is invoked with five arguments: (objValue, srcValue, key, object, source).
	     *
	     * **Note:** This method mutates `object`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @alias extendWith
	     * @category Object
	     * @param {Object} object The destination object.
	     * @param {...Object} sources The source objects.
	     * @param {Function} [customizer] The function to customize assigned values.
	     * @returns {Object} Returns `object`.
	     * @see _.assignWith
	     * @example
	     *
	     * function customizer(objValue, srcValue) {
	     *   return _.isUndefined(objValue) ? srcValue : objValue;
	     * }
	     *
	     * var defaults = _.partialRight(_.assignInWith, customizer);
	     *
	     * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
	     * // => { 'a': 1, 'b': 2 }
	     */
	    var assignInWith = createAssigner(function(object, source, srcIndex, customizer) {
	      copyObject(source, keysIn(source), object, customizer);
	    });

	    /**
	     * This method is like `_.assign` except that it accepts `customizer`
	     * which is invoked to produce the assigned values. If `customizer` returns
	     * `undefined`, assignment is handled by the method instead. The `customizer`
	     * is invoked with five arguments: (objValue, srcValue, key, object, source).
	     *
	     * **Note:** This method mutates `object`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Object
	     * @param {Object} object The destination object.
	     * @param {...Object} sources The source objects.
	     * @param {Function} [customizer] The function to customize assigned values.
	     * @returns {Object} Returns `object`.
	     * @see _.assignInWith
	     * @example
	     *
	     * function customizer(objValue, srcValue) {
	     *   return _.isUndefined(objValue) ? srcValue : objValue;
	     * }
	     *
	     * var defaults = _.partialRight(_.assignWith, customizer);
	     *
	     * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
	     * // => { 'a': 1, 'b': 2 }
	     */
	    var assignWith = createAssigner(function(object, source, srcIndex, customizer) {
	      copyObject(source, keys(source), object, customizer);
	    });

	    /**
	     * Creates an array of values corresponding to `paths` of `object`.
	     *
	     * @static
	     * @memberOf _
	     * @since 1.0.0
	     * @category Object
	     * @param {Object} object The object to iterate over.
	     * @param {...(string|string[])} [paths] The property paths to pick.
	     * @returns {Array} Returns the picked values.
	     * @example
	     *
	     * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
	     *
	     * _.at(object, ['a[0].b.c', 'a[1]']);
	     * // => [3, 4]
	     */
	    var at = flatRest(baseAt);

	    /**
	     * Creates an object that inherits from the `prototype` object. If a
	     * `properties` object is given, its own enumerable string keyed properties
	     * are assigned to the created object.
	     *
	     * @static
	     * @memberOf _
	     * @since 2.3.0
	     * @category Object
	     * @param {Object} prototype The object to inherit from.
	     * @param {Object} [properties] The properties to assign to the object.
	     * @returns {Object} Returns the new object.
	     * @example
	     *
	     * function Shape() {
	     *   this.x = 0;
	     *   this.y = 0;
	     * }
	     *
	     * function Circle() {
	     *   Shape.call(this);
	     * }
	     *
	     * Circle.prototype = _.create(Shape.prototype, {
	     *   'constructor': Circle
	     * });
	     *
	     * var circle = new Circle;
	     * circle instanceof Circle;
	     * // => true
	     *
	     * circle instanceof Shape;
	     * // => true
	     */
	    function create(prototype, properties) {
	      var result = baseCreate(prototype);
	      return properties == null ? result : baseAssign(result, properties);
	    }

	    /**
	     * Assigns own and inherited enumerable string keyed properties of source
	     * objects to the destination object for all destination properties that
	     * resolve to `undefined`. Source objects are applied from left to right.
	     * Once a property is set, additional values of the same property are ignored.
	     *
	     * **Note:** This method mutates `object`.
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category Object
	     * @param {Object} object The destination object.
	     * @param {...Object} [sources] The source objects.
	     * @returns {Object} Returns `object`.
	     * @see _.defaultsDeep
	     * @example
	     *
	     * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
	     * // => { 'a': 1, 'b': 2 }
	     */
	    var defaults = baseRest(function(object, sources) {
	      object = Object(object);

	      var index = -1;
	      var length = sources.length;
	      var guard = length > 2 ? sources[2] : undefined$1;

	      if (guard && isIterateeCall(sources[0], sources[1], guard)) {
	        length = 1;
	      }

	      while (++index < length) {
	        var source = sources[index];
	        var props = keysIn(source);
	        var propsIndex = -1;
	        var propsLength = props.length;

	        while (++propsIndex < propsLength) {
	          var key = props[propsIndex];
	          var value = object[key];

	          if (value === undefined$1 ||
	              (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {
	            object[key] = source[key];
	          }
	        }
	      }

	      return object;
	    });

	    /**
	     * This method is like `_.defaults` except that it recursively assigns
	     * default properties.
	     *
	     * **Note:** This method mutates `object`.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.10.0
	     * @category Object
	     * @param {Object} object The destination object.
	     * @param {...Object} [sources] The source objects.
	     * @returns {Object} Returns `object`.
	     * @see _.defaults
	     * @example
	     *
	     * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });
	     * // => { 'a': { 'b': 2, 'c': 3 } }
	     */
	    var defaultsDeep = baseRest(function(args) {
	      args.push(undefined$1, customDefaultsMerge);
	      return apply(mergeWith, undefined$1, args);
	    });

	    /**
	     * This method is like `_.find` except that it returns the key of the first
	     * element `predicate` returns truthy for instead of the element itself.
	     *
	     * @static
	     * @memberOf _
	     * @since 1.1.0
	     * @category Object
	     * @param {Object} object The object to inspect.
	     * @param {Function} [predicate=_.identity] The function invoked per iteration.
	     * @returns {string|undefined} Returns the key of the matched element,
	     *  else `undefined`.
	     * @example
	     *
	     * var users = {
	     *   'barney':  { 'age': 36, 'active': true },
	     *   'fred':    { 'age': 40, 'active': false },
	     *   'pebbles': { 'age': 1,  'active': true }
	     * };
	     *
	     * _.findKey(users, function(o) { return o.age < 40; });
	     * // => 'barney' (iteration order is not guaranteed)
	     *
	     * // The `_.matches` iteratee shorthand.
	     * _.findKey(users, { 'age': 1, 'active': true });
	     * // => 'pebbles'
	     *
	     * // The `_.matchesProperty` iteratee shorthand.
	     * _.findKey(users, ['active', false]);
	     * // => 'fred'
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.findKey(users, 'active');
	     * // => 'barney'
	     */
	    function findKey(object, predicate) {
	      return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);
	    }

	    /**
	     * This method is like `_.findKey` except that it iterates over elements of
	     * a collection in the opposite order.
	     *
	     * @static
	     * @memberOf _
	     * @since 2.0.0
	     * @category Object
	     * @param {Object} object The object to inspect.
	     * @param {Function} [predicate=_.identity] The function invoked per iteration.
	     * @returns {string|undefined} Returns the key of the matched element,
	     *  else `undefined`.
	     * @example
	     *
	     * var users = {
	     *   'barney':  { 'age': 36, 'active': true },
	     *   'fred':    { 'age': 40, 'active': false },
	     *   'pebbles': { 'age': 1,  'active': true }
	     * };
	     *
	     * _.findLastKey(users, function(o) { return o.age < 40; });
	     * // => returns 'pebbles' assuming `_.findKey` returns 'barney'
	     *
	     * // The `_.matches` iteratee shorthand.
	     * _.findLastKey(users, { 'age': 36, 'active': true });
	     * // => 'barney'
	     *
	     * // The `_.matchesProperty` iteratee shorthand.
	     * _.findLastKey(users, ['active', false]);
	     * // => 'fred'
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.findLastKey(users, 'active');
	     * // => 'pebbles'
	     */
	    function findLastKey(object, predicate) {
	      return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);
	    }

	    /**
	     * Iterates over own and inherited enumerable string keyed properties of an
	     * object and invokes `iteratee` for each property. The iteratee is invoked
	     * with three arguments: (value, key, object). Iteratee functions may exit
	     * iteration early by explicitly returning `false`.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.3.0
	     * @category Object
	     * @param {Object} object The object to iterate over.
	     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
	     * @returns {Object} Returns `object`.
	     * @see _.forInRight
	     * @example
	     *
	     * function Foo() {
	     *   this.a = 1;
	     *   this.b = 2;
	     * }
	     *
	     * Foo.prototype.c = 3;
	     *
	     * _.forIn(new Foo, function(value, key) {
	     *   console.log(key);
	     * });
	     * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).
	     */
	    function forIn(object, iteratee) {
	      return object == null
	        ? object
	        : baseFor(object, getIteratee(iteratee, 3), keysIn);
	    }

	    /**
	     * This method is like `_.forIn` except that it iterates over properties of
	     * `object` in the opposite order.
	     *
	     * @static
	     * @memberOf _
	     * @since 2.0.0
	     * @category Object
	     * @param {Object} object The object to iterate over.
	     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
	     * @returns {Object} Returns `object`.
	     * @see _.forIn
	     * @example
	     *
	     * function Foo() {
	     *   this.a = 1;
	     *   this.b = 2;
	     * }
	     *
	     * Foo.prototype.c = 3;
	     *
	     * _.forInRight(new Foo, function(value, key) {
	     *   console.log(key);
	     * });
	     * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.
	     */
	    function forInRight(object, iteratee) {
	      return object == null
	        ? object
	        : baseForRight(object, getIteratee(iteratee, 3), keysIn);
	    }

	    /**
	     * Iterates over own enumerable string keyed properties of an object and
	     * invokes `iteratee` for each property. The iteratee is invoked with three
	     * arguments: (value, key, object). Iteratee functions may exit iteration
	     * early by explicitly returning `false`.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.3.0
	     * @category Object
	     * @param {Object} object The object to iterate over.
	     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
	     * @returns {Object} Returns `object`.
	     * @see _.forOwnRight
	     * @example
	     *
	     * function Foo() {
	     *   this.a = 1;
	     *   this.b = 2;
	     * }
	     *
	     * Foo.prototype.c = 3;
	     *
	     * _.forOwn(new Foo, function(value, key) {
	     *   console.log(key);
	     * });
	     * // => Logs 'a' then 'b' (iteration order is not guaranteed).
	     */
	    function forOwn(object, iteratee) {
	      return object && baseForOwn(object, getIteratee(iteratee, 3));
	    }

	    /**
	     * This method is like `_.forOwn` except that it iterates over properties of
	     * `object` in the opposite order.
	     *
	     * @static
	     * @memberOf _
	     * @since 2.0.0
	     * @category Object
	     * @param {Object} object The object to iterate over.
	     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
	     * @returns {Object} Returns `object`.
	     * @see _.forOwn
	     * @example
	     *
	     * function Foo() {
	     *   this.a = 1;
	     *   this.b = 2;
	     * }
	     *
	     * Foo.prototype.c = 3;
	     *
	     * _.forOwnRight(new Foo, function(value, key) {
	     *   console.log(key);
	     * });
	     * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.
	     */
	    function forOwnRight(object, iteratee) {
	      return object && baseForOwnRight(object, getIteratee(iteratee, 3));
	    }

	    /**
	     * Creates an array of function property names from own enumerable properties
	     * of `object`.
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category Object
	     * @param {Object} object The object to inspect.
	     * @returns {Array} Returns the function names.
	     * @see _.functionsIn
	     * @example
	     *
	     * function Foo() {
	     *   this.a = _.constant('a');
	     *   this.b = _.constant('b');
	     * }
	     *
	     * Foo.prototype.c = _.constant('c');
	     *
	     * _.functions(new Foo);
	     * // => ['a', 'b']
	     */
	    function functions(object) {
	      return object == null ? [] : baseFunctions(object, keys(object));
	    }

	    /**
	     * Creates an array of function property names from own and inherited
	     * enumerable properties of `object`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Object
	     * @param {Object} object The object to inspect.
	     * @returns {Array} Returns the function names.
	     * @see _.functions
	     * @example
	     *
	     * function Foo() {
	     *   this.a = _.constant('a');
	     *   this.b = _.constant('b');
	     * }
	     *
	     * Foo.prototype.c = _.constant('c');
	     *
	     * _.functionsIn(new Foo);
	     * // => ['a', 'b', 'c']
	     */
	    function functionsIn(object) {
	      return object == null ? [] : baseFunctions(object, keysIn(object));
	    }

	    /**
	     * Gets the value at `path` of `object`. If the resolved value is
	     * `undefined`, the `defaultValue` is returned in its place.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.7.0
	     * @category Object
	     * @param {Object} object The object to query.
	     * @param {Array|string} path The path of the property to get.
	     * @param {*} [defaultValue] The value returned for `undefined` resolved values.
	     * @returns {*} Returns the resolved value.
	     * @example
	     *
	     * var object = { 'a': [{ 'b': { 'c': 3 } }] };
	     *
	     * _.get(object, 'a[0].b.c');
	     * // => 3
	     *
	     * _.get(object, ['a', '0', 'b', 'c']);
	     * // => 3
	     *
	     * _.get(object, 'a.b.c', 'default');
	     * // => 'default'
	     */
	    function get(object, path, defaultValue) {
	      var result = object == null ? undefined$1 : baseGet(object, path);
	      return result === undefined$1 ? defaultValue : result;
	    }

	    /**
	     * Checks if `path` is a direct property of `object`.
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category Object
	     * @param {Object} object The object to query.
	     * @param {Array|string} path The path to check.
	     * @returns {boolean} Returns `true` if `path` exists, else `false`.
	     * @example
	     *
	     * var object = { 'a': { 'b': 2 } };
	     * var other = _.create({ 'a': _.create({ 'b': 2 }) });
	     *
	     * _.has(object, 'a');
	     * // => true
	     *
	     * _.has(object, 'a.b');
	     * // => true
	     *
	     * _.has(object, ['a', 'b']);
	     * // => true
	     *
	     * _.has(other, 'a');
	     * // => false
	     */
	    function has(object, path) {
	      return object != null && hasPath(object, path, baseHas);
	    }

	    /**
	     * Checks if `path` is a direct or inherited property of `object`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Object
	     * @param {Object} object The object to query.
	     * @param {Array|string} path The path to check.
	     * @returns {boolean} Returns `true` if `path` exists, else `false`.
	     * @example
	     *
	     * var object = _.create({ 'a': _.create({ 'b': 2 }) });
	     *
	     * _.hasIn(object, 'a');
	     * // => true
	     *
	     * _.hasIn(object, 'a.b');
	     * // => true
	     *
	     * _.hasIn(object, ['a', 'b']);
	     * // => true
	     *
	     * _.hasIn(object, 'b');
	     * // => false
	     */
	    function hasIn(object, path) {
	      return object != null && hasPath(object, path, baseHasIn);
	    }

	    /**
	     * Creates an object composed of the inverted keys and values of `object`.
	     * If `object` contains duplicate values, subsequent values overwrite
	     * property assignments of previous values.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.7.0
	     * @category Object
	     * @param {Object} object The object to invert.
	     * @returns {Object} Returns the new inverted object.
	     * @example
	     *
	     * var object = { 'a': 1, 'b': 2, 'c': 1 };
	     *
	     * _.invert(object);
	     * // => { '1': 'c', '2': 'b' }
	     */
	    var invert = createInverter(function(result, value, key) {
	      if (value != null &&
	          typeof value.toString != 'function') {
	        value = nativeObjectToString.call(value);
	      }

	      result[value] = key;
	    }, constant(identity));

	    /**
	     * This method is like `_.invert` except that the inverted object is generated
	     * from the results of running each element of `object` thru `iteratee`. The
	     * corresponding inverted value of each inverted key is an array of keys
	     * responsible for generating the inverted value. The iteratee is invoked
	     * with one argument: (value).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.1.0
	     * @category Object
	     * @param {Object} object The object to invert.
	     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
	     * @returns {Object} Returns the new inverted object.
	     * @example
	     *
	     * var object = { 'a': 1, 'b': 2, 'c': 1 };
	     *
	     * _.invertBy(object);
	     * // => { '1': ['a', 'c'], '2': ['b'] }
	     *
	     * _.invertBy(object, function(value) {
	     *   return 'group' + value;
	     * });
	     * // => { 'group1': ['a', 'c'], 'group2': ['b'] }
	     */
	    var invertBy = createInverter(function(result, value, key) {
	      if (value != null &&
	          typeof value.toString != 'function') {
	        value = nativeObjectToString.call(value);
	      }

	      if (hasOwnProperty.call(result, value)) {
	        result[value].push(key);
	      } else {
	        result[value] = [key];
	      }
	    }, getIteratee);

	    /**
	     * Invokes the method at `path` of `object`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Object
	     * @param {Object} object The object to query.
	     * @param {Array|string} path The path of the method to invoke.
	     * @param {...*} [args] The arguments to invoke the method with.
	     * @returns {*} Returns the result of the invoked method.
	     * @example
	     *
	     * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };
	     *
	     * _.invoke(object, 'a[0].b.c.slice', 1, 3);
	     * // => [2, 3]
	     */
	    var invoke = baseRest(baseInvoke);

	    /**
	     * Creates an array of the own enumerable property names of `object`.
	     *
	     * **Note:** Non-object values are coerced to objects. See the
	     * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
	     * for more details.
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category Object
	     * @param {Object} object The object to query.
	     * @returns {Array} Returns the array of property names.
	     * @example
	     *
	     * function Foo() {
	     *   this.a = 1;
	     *   this.b = 2;
	     * }
	     *
	     * Foo.prototype.c = 3;
	     *
	     * _.keys(new Foo);
	     * // => ['a', 'b'] (iteration order is not guaranteed)
	     *
	     * _.keys('hi');
	     * // => ['0', '1']
	     */
	    function keys(object) {
	      return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);
	    }

	    /**
	     * Creates an array of the own and inherited enumerable property names of `object`.
	     *
	     * **Note:** Non-object values are coerced to objects.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Object
	     * @param {Object} object The object to query.
	     * @returns {Array} Returns the array of property names.
	     * @example
	     *
	     * function Foo() {
	     *   this.a = 1;
	     *   this.b = 2;
	     * }
	     *
	     * Foo.prototype.c = 3;
	     *
	     * _.keysIn(new Foo);
	     * // => ['a', 'b', 'c'] (iteration order is not guaranteed)
	     */
	    function keysIn(object) {
	      return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);
	    }

	    /**
	     * The opposite of `_.mapValues`; this method creates an object with the
	     * same values as `object` and keys generated by running each own enumerable
	     * string keyed property of `object` thru `iteratee`. The iteratee is invoked
	     * with three arguments: (value, key, object).
	     *
	     * @static
	     * @memberOf _
	     * @since 3.8.0
	     * @category Object
	     * @param {Object} object The object to iterate over.
	     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
	     * @returns {Object} Returns the new mapped object.
	     * @see _.mapValues
	     * @example
	     *
	     * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {
	     *   return key + value;
	     * });
	     * // => { 'a1': 1, 'b2': 2 }
	     */
	    function mapKeys(object, iteratee) {
	      var result = {};
	      iteratee = getIteratee(iteratee, 3);

	      baseForOwn(object, function(value, key, object) {
	        baseAssignValue(result, iteratee(value, key, object), value);
	      });
	      return result;
	    }

	    /**
	     * Creates an object with the same keys as `object` and values generated
	     * by running each own enumerable string keyed property of `object` thru
	     * `iteratee`. The iteratee is invoked with three arguments:
	     * (value, key, object).
	     *
	     * @static
	     * @memberOf _
	     * @since 2.4.0
	     * @category Object
	     * @param {Object} object The object to iterate over.
	     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
	     * @returns {Object} Returns the new mapped object.
	     * @see _.mapKeys
	     * @example
	     *
	     * var users = {
	     *   'fred':    { 'user': 'fred',    'age': 40 },
	     *   'pebbles': { 'user': 'pebbles', 'age': 1 }
	     * };
	     *
	     * _.mapValues(users, function(o) { return o.age; });
	     * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.mapValues(users, 'age');
	     * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
	     */
	    function mapValues(object, iteratee) {
	      var result = {};
	      iteratee = getIteratee(iteratee, 3);

	      baseForOwn(object, function(value, key, object) {
	        baseAssignValue(result, key, iteratee(value, key, object));
	      });
	      return result;
	    }

	    /**
	     * This method is like `_.assign` except that it recursively merges own and
	     * inherited enumerable string keyed properties of source objects into the
	     * destination object. Source properties that resolve to `undefined` are
	     * skipped if a destination value exists. Array and plain object properties
	     * are merged recursively. Other objects and value types are overridden by
	     * assignment. Source objects are applied from left to right. Subsequent
	     * sources overwrite property assignments of previous sources.
	     *
	     * **Note:** This method mutates `object`.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.5.0
	     * @category Object
	     * @param {Object} object The destination object.
	     * @param {...Object} [sources] The source objects.
	     * @returns {Object} Returns `object`.
	     * @example
	     *
	     * var object = {
	     *   'a': [{ 'b': 2 }, { 'd': 4 }]
	     * };
	     *
	     * var other = {
	     *   'a': [{ 'c': 3 }, { 'e': 5 }]
	     * };
	     *
	     * _.merge(object, other);
	     * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }
	     */
	    var merge = createAssigner(function(object, source, srcIndex) {
	      baseMerge(object, source, srcIndex);
	    });

	    /**
	     * This method is like `_.merge` except that it accepts `customizer` which
	     * is invoked to produce the merged values of the destination and source
	     * properties. If `customizer` returns `undefined`, merging is handled by the
	     * method instead. The `customizer` is invoked with six arguments:
	     * (objValue, srcValue, key, object, source, stack).
	     *
	     * **Note:** This method mutates `object`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Object
	     * @param {Object} object The destination object.
	     * @param {...Object} sources The source objects.
	     * @param {Function} customizer The function to customize assigned values.
	     * @returns {Object} Returns `object`.
	     * @example
	     *
	     * function customizer(objValue, srcValue) {
	     *   if (_.isArray(objValue)) {
	     *     return objValue.concat(srcValue);
	     *   }
	     * }
	     *
	     * var object = { 'a': [1], 'b': [2] };
	     * var other = { 'a': [3], 'b': [4] };
	     *
	     * _.mergeWith(object, other, customizer);
	     * // => { 'a': [1, 3], 'b': [2, 4] }
	     */
	    var mergeWith = createAssigner(function(object, source, srcIndex, customizer) {
	      baseMerge(object, source, srcIndex, customizer);
	    });

	    /**
	     * The opposite of `_.pick`; this method creates an object composed of the
	     * own and inherited enumerable property paths of `object` that are not omitted.
	     *
	     * **Note:** This method is considerably slower than `_.pick`.
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category Object
	     * @param {Object} object The source object.
	     * @param {...(string|string[])} [paths] The property paths to omit.
	     * @returns {Object} Returns the new object.
	     * @example
	     *
	     * var object = { 'a': 1, 'b': '2', 'c': 3 };
	     *
	     * _.omit(object, ['a', 'c']);
	     * // => { 'b': '2' }
	     */
	    var omit = flatRest(function(object, paths) {
	      var result = {};
	      if (object == null) {
	        return result;
	      }
	      var isDeep = false;
	      paths = arrayMap(paths, function(path) {
	        path = castPath(path, object);
	        isDeep || (isDeep = path.length > 1);
	        return path;
	      });
	      copyObject(object, getAllKeysIn(object), result);
	      if (isDeep) {
	        result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);
	      }
	      var length = paths.length;
	      while (length--) {
	        baseUnset(result, paths[length]);
	      }
	      return result;
	    });

	    /**
	     * The opposite of `_.pickBy`; this method creates an object composed of
	     * the own and inherited enumerable string keyed properties of `object` that
	     * `predicate` doesn't return truthy for. The predicate is invoked with two
	     * arguments: (value, key).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Object
	     * @param {Object} object The source object.
	     * @param {Function} [predicate=_.identity] The function invoked per property.
	     * @returns {Object} Returns the new object.
	     * @example
	     *
	     * var object = { 'a': 1, 'b': '2', 'c': 3 };
	     *
	     * _.omitBy(object, _.isNumber);
	     * // => { 'b': '2' }
	     */
	    function omitBy(object, predicate) {
	      return pickBy(object, negate(getIteratee(predicate)));
	    }

	    /**
	     * Creates an object composed of the picked `object` properties.
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category Object
	     * @param {Object} object The source object.
	     * @param {...(string|string[])} [paths] The property paths to pick.
	     * @returns {Object} Returns the new object.
	     * @example
	     *
	     * var object = { 'a': 1, 'b': '2', 'c': 3 };
	     *
	     * _.pick(object, ['a', 'c']);
	     * // => { 'a': 1, 'c': 3 }
	     */
	    var pick = flatRest(function(object, paths) {
	      return object == null ? {} : basePick(object, paths);
	    });

	    /**
	     * Creates an object composed of the `object` properties `predicate` returns
	     * truthy for. The predicate is invoked with two arguments: (value, key).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Object
	     * @param {Object} object The source object.
	     * @param {Function} [predicate=_.identity] The function invoked per property.
	     * @returns {Object} Returns the new object.
	     * @example
	     *
	     * var object = { 'a': 1, 'b': '2', 'c': 3 };
	     *
	     * _.pickBy(object, _.isNumber);
	     * // => { 'a': 1, 'c': 3 }
	     */
	    function pickBy(object, predicate) {
	      if (object == null) {
	        return {};
	      }
	      var props = arrayMap(getAllKeysIn(object), function(prop) {
	        return [prop];
	      });
	      predicate = getIteratee(predicate);
	      return basePickBy(object, props, function(value, path) {
	        return predicate(value, path[0]);
	      });
	    }

	    /**
	     * This method is like `_.get` except that if the resolved value is a
	     * function it's invoked with the `this` binding of its parent object and
	     * its result is returned.
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category Object
	     * @param {Object} object The object to query.
	     * @param {Array|string} path The path of the property to resolve.
	     * @param {*} [defaultValue] The value returned for `undefined` resolved values.
	     * @returns {*} Returns the resolved value.
	     * @example
	     *
	     * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };
	     *
	     * _.result(object, 'a[0].b.c1');
	     * // => 3
	     *
	     * _.result(object, 'a[0].b.c2');
	     * // => 4
	     *
	     * _.result(object, 'a[0].b.c3', 'default');
	     * // => 'default'
	     *
	     * _.result(object, 'a[0].b.c3', _.constant('default'));
	     * // => 'default'
	     */
	    function result(object, path, defaultValue) {
	      path = castPath(path, object);

	      var index = -1,
	          length = path.length;

	      // Ensure the loop is entered when path is empty.
	      if (!length) {
	        length = 1;
	        object = undefined$1;
	      }
	      while (++index < length) {
	        var value = object == null ? undefined$1 : object[toKey(path[index])];
	        if (value === undefined$1) {
	          index = length;
	          value = defaultValue;
	        }
	        object = isFunction(value) ? value.call(object) : value;
	      }
	      return object;
	    }

	    /**
	     * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,
	     * it's created. Arrays are created for missing index properties while objects
	     * are created for all other missing properties. Use `_.setWith` to customize
	     * `path` creation.
	     *
	     * **Note:** This method mutates `object`.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.7.0
	     * @category Object
	     * @param {Object} object The object to modify.
	     * @param {Array|string} path The path of the property to set.
	     * @param {*} value The value to set.
	     * @returns {Object} Returns `object`.
	     * @example
	     *
	     * var object = { 'a': [{ 'b': { 'c': 3 } }] };
	     *
	     * _.set(object, 'a[0].b.c', 4);
	     * console.log(object.a[0].b.c);
	     * // => 4
	     *
	     * _.set(object, ['x', '0', 'y', 'z'], 5);
	     * console.log(object.x[0].y.z);
	     * // => 5
	     */
	    function set(object, path, value) {
	      return object == null ? object : baseSet(object, path, value);
	    }

	    /**
	     * This method is like `_.set` except that it accepts `customizer` which is
	     * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
	     * path creation is handled by the method instead. The `customizer` is invoked
	     * with three arguments: (nsValue, key, nsObject).
	     *
	     * **Note:** This method mutates `object`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Object
	     * @param {Object} object The object to modify.
	     * @param {Array|string} path The path of the property to set.
	     * @param {*} value The value to set.
	     * @param {Function} [customizer] The function to customize assigned values.
	     * @returns {Object} Returns `object`.
	     * @example
	     *
	     * var object = {};
	     *
	     * _.setWith(object, '[0][1]', 'a', Object);
	     * // => { '0': { '1': 'a' } }
	     */
	    function setWith(object, path, value, customizer) {
	      customizer = typeof customizer == 'function' ? customizer : undefined$1;
	      return object == null ? object : baseSet(object, path, value, customizer);
	    }

	    /**
	     * Creates an array of own enumerable string keyed-value pairs for `object`
	     * which can be consumed by `_.fromPairs`. If `object` is a map or set, its
	     * entries are returned.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @alias entries
	     * @category Object
	     * @param {Object} object The object to query.
	     * @returns {Array} Returns the key-value pairs.
	     * @example
	     *
	     * function Foo() {
	     *   this.a = 1;
	     *   this.b = 2;
	     * }
	     *
	     * Foo.prototype.c = 3;
	     *
	     * _.toPairs(new Foo);
	     * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)
	     */
	    var toPairs = createToPairs(keys);

	    /**
	     * Creates an array of own and inherited enumerable string keyed-value pairs
	     * for `object` which can be consumed by `_.fromPairs`. If `object` is a map
	     * or set, its entries are returned.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @alias entriesIn
	     * @category Object
	     * @param {Object} object The object to query.
	     * @returns {Array} Returns the key-value pairs.
	     * @example
	     *
	     * function Foo() {
	     *   this.a = 1;
	     *   this.b = 2;
	     * }
	     *
	     * Foo.prototype.c = 3;
	     *
	     * _.toPairsIn(new Foo);
	     * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)
	     */
	    var toPairsIn = createToPairs(keysIn);

	    /**
	     * An alternative to `_.reduce`; this method transforms `object` to a new
	     * `accumulator` object which is the result of running each of its own
	     * enumerable string keyed properties thru `iteratee`, with each invocation
	     * potentially mutating the `accumulator` object. If `accumulator` is not
	     * provided, a new object with the same `[[Prototype]]` will be used. The
	     * iteratee is invoked with four arguments: (accumulator, value, key, object).
	     * Iteratee functions may exit iteration early by explicitly returning `false`.
	     *
	     * @static
	     * @memberOf _
	     * @since 1.3.0
	     * @category Object
	     * @param {Object} object The object to iterate over.
	     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
	     * @param {*} [accumulator] The custom accumulator value.
	     * @returns {*} Returns the accumulated value.
	     * @example
	     *
	     * _.transform([2, 3, 4], function(result, n) {
	     *   result.push(n *= n);
	     *   return n % 2 == 0;
	     * }, []);
	     * // => [4, 9]
	     *
	     * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
	     *   (result[value] || (result[value] = [])).push(key);
	     * }, {});
	     * // => { '1': ['a', 'c'], '2': ['b'] }
	     */
	    function transform(object, iteratee, accumulator) {
	      var isArr = isArray(object),
	          isArrLike = isArr || isBuffer(object) || isTypedArray(object);

	      iteratee = getIteratee(iteratee, 4);
	      if (accumulator == null) {
	        var Ctor = object && object.constructor;
	        if (isArrLike) {
	          accumulator = isArr ? new Ctor : [];
	        }
	        else if (isObject(object)) {
	          accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};
	        }
	        else {
	          accumulator = {};
	        }
	      }
	      (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) {
	        return iteratee(accumulator, value, index, object);
	      });
	      return accumulator;
	    }

	    /**
	     * Removes the property at `path` of `object`.
	     *
	     * **Note:** This method mutates `object`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Object
	     * @param {Object} object The object to modify.
	     * @param {Array|string} path The path of the property to unset.
	     * @returns {boolean} Returns `true` if the property is deleted, else `false`.
	     * @example
	     *
	     * var object = { 'a': [{ 'b': { 'c': 7 } }] };
	     * _.unset(object, 'a[0].b.c');
	     * // => true
	     *
	     * console.log(object);
	     * // => { 'a': [{ 'b': {} }] };
	     *
	     * _.unset(object, ['a', '0', 'b', 'c']);
	     * // => true
	     *
	     * console.log(object);
	     * // => { 'a': [{ 'b': {} }] };
	     */
	    function unset(object, path) {
	      return object == null ? true : baseUnset(object, path);
	    }

	    /**
	     * This method is like `_.set` except that accepts `updater` to produce the
	     * value to set. Use `_.updateWith` to customize `path` creation. The `updater`
	     * is invoked with one argument: (value).
	     *
	     * **Note:** This method mutates `object`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.6.0
	     * @category Object
	     * @param {Object} object The object to modify.
	     * @param {Array|string} path The path of the property to set.
	     * @param {Function} updater The function to produce the updated value.
	     * @returns {Object} Returns `object`.
	     * @example
	     *
	     * var object = { 'a': [{ 'b': { 'c': 3 } }] };
	     *
	     * _.update(object, 'a[0].b.c', function(n) { return n * n; });
	     * console.log(object.a[0].b.c);
	     * // => 9
	     *
	     * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });
	     * console.log(object.x[0].y.z);
	     * // => 0
	     */
	    function update(object, path, updater) {
	      return object == null ? object : baseUpdate(object, path, castFunction(updater));
	    }

	    /**
	     * This method is like `_.update` except that it accepts `customizer` which is
	     * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
	     * path creation is handled by the method instead. The `customizer` is invoked
	     * with three arguments: (nsValue, key, nsObject).
	     *
	     * **Note:** This method mutates `object`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.6.0
	     * @category Object
	     * @param {Object} object The object to modify.
	     * @param {Array|string} path The path of the property to set.
	     * @param {Function} updater The function to produce the updated value.
	     * @param {Function} [customizer] The function to customize assigned values.
	     * @returns {Object} Returns `object`.
	     * @example
	     *
	     * var object = {};
	     *
	     * _.updateWith(object, '[0][1]', _.constant('a'), Object);
	     * // => { '0': { '1': 'a' } }
	     */
	    function updateWith(object, path, updater, customizer) {
	      customizer = typeof customizer == 'function' ? customizer : undefined$1;
	      return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);
	    }

	    /**
	     * Creates an array of the own enumerable string keyed property values of `object`.
	     *
	     * **Note:** Non-object values are coerced to objects.
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category Object
	     * @param {Object} object The object to query.
	     * @returns {Array} Returns the array of property values.
	     * @example
	     *
	     * function Foo() {
	     *   this.a = 1;
	     *   this.b = 2;
	     * }
	     *
	     * Foo.prototype.c = 3;
	     *
	     * _.values(new Foo);
	     * // => [1, 2] (iteration order is not guaranteed)
	     *
	     * _.values('hi');
	     * // => ['h', 'i']
	     */
	    function values(object) {
	      return object == null ? [] : baseValues(object, keys(object));
	    }

	    /**
	     * Creates an array of the own and inherited enumerable string keyed property
	     * values of `object`.
	     *
	     * **Note:** Non-object values are coerced to objects.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Object
	     * @param {Object} object The object to query.
	     * @returns {Array} Returns the array of property values.
	     * @example
	     *
	     * function Foo() {
	     *   this.a = 1;
	     *   this.b = 2;
	     * }
	     *
	     * Foo.prototype.c = 3;
	     *
	     * _.valuesIn(new Foo);
	     * // => [1, 2, 3] (iteration order is not guaranteed)
	     */
	    function valuesIn(object) {
	      return object == null ? [] : baseValues(object, keysIn(object));
	    }

	    /*------------------------------------------------------------------------*/

	    /**
	     * Clamps `number` within the inclusive `lower` and `upper` bounds.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Number
	     * @param {number} number The number to clamp.
	     * @param {number} [lower] The lower bound.
	     * @param {number} upper The upper bound.
	     * @returns {number} Returns the clamped number.
	     * @example
	     *
	     * _.clamp(-10, -5, 5);
	     * // => -5
	     *
	     * _.clamp(10, -5, 5);
	     * // => 5
	     */
	    function clamp(number, lower, upper) {
	      if (upper === undefined$1) {
	        upper = lower;
	        lower = undefined$1;
	      }
	      if (upper !== undefined$1) {
	        upper = toNumber(upper);
	        upper = upper === upper ? upper : 0;
	      }
	      if (lower !== undefined$1) {
	        lower = toNumber(lower);
	        lower = lower === lower ? lower : 0;
	      }
	      return baseClamp(toNumber(number), lower, upper);
	    }

	    /**
	     * Checks if `n` is between `start` and up to, but not including, `end`. If
	     * `end` is not specified, it's set to `start` with `start` then set to `0`.
	     * If `start` is greater than `end` the params are swapped to support
	     * negative ranges.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.3.0
	     * @category Number
	     * @param {number} number The number to check.
	     * @param {number} [start=0] The start of the range.
	     * @param {number} end The end of the range.
	     * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
	     * @see _.range, _.rangeRight
	     * @example
	     *
	     * _.inRange(3, 2, 4);
	     * // => true
	     *
	     * _.inRange(4, 8);
	     * // => true
	     *
	     * _.inRange(4, 2);
	     * // => false
	     *
	     * _.inRange(2, 2);
	     * // => false
	     *
	     * _.inRange(1.2, 2);
	     * // => true
	     *
	     * _.inRange(5.2, 4);
	     * // => false
	     *
	     * _.inRange(-3, -2, -6);
	     * // => true
	     */
	    function inRange(number, start, end) {
	      start = toFinite(start);
	      if (end === undefined$1) {
	        end = start;
	        start = 0;
	      } else {
	        end = toFinite(end);
	      }
	      number = toNumber(number);
	      return baseInRange(number, start, end);
	    }

	    /**
	     * Produces a random number between the inclusive `lower` and `upper` bounds.
	     * If only one argument is provided a number between `0` and the given number
	     * is returned. If `floating` is `true`, or either `lower` or `upper` are
	     * floats, a floating-point number is returned instead of an integer.
	     *
	     * **Note:** JavaScript follows the IEEE-754 standard for resolving
	     * floating-point values which can produce unexpected results.
	     *
	     * @static
	     * @memberOf _
	     * @since 0.7.0
	     * @category Number
	     * @param {number} [lower=0] The lower bound.
	     * @param {number} [upper=1] The upper bound.
	     * @param {boolean} [floating] Specify returning a floating-point number.
	     * @returns {number} Returns the random number.
	     * @example
	     *
	     * _.random(0, 5);
	     * // => an integer between 0 and 5
	     *
	     * _.random(5);
	     * // => also an integer between 0 and 5
	     *
	     * _.random(5, true);
	     * // => a floating-point number between 0 and 5
	     *
	     * _.random(1.2, 5.2);
	     * // => a floating-point number between 1.2 and 5.2
	     */
	    function random(lower, upper, floating) {
	      if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {
	        upper = floating = undefined$1;
	      }
	      if (floating === undefined$1) {
	        if (typeof upper == 'boolean') {
	          floating = upper;
	          upper = undefined$1;
	        }
	        else if (typeof lower == 'boolean') {
	          floating = lower;
	          lower = undefined$1;
	        }
	      }
	      if (lower === undefined$1 && upper === undefined$1) {
	        lower = 0;
	        upper = 1;
	      }
	      else {
	        lower = toFinite(lower);
	        if (upper === undefined$1) {
	          upper = lower;
	          lower = 0;
	        } else {
	          upper = toFinite(upper);
	        }
	      }
	      if (lower > upper) {
	        var temp = lower;
	        lower = upper;
	        upper = temp;
	      }
	      if (floating || lower % 1 || upper % 1) {
	        var rand = nativeRandom();
	        return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper);
	      }
	      return baseRandom(lower, upper);
	    }

	    /*------------------------------------------------------------------------*/

	    /**
	     * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category String
	     * @param {string} [string=''] The string to convert.
	     * @returns {string} Returns the camel cased string.
	     * @example
	     *
	     * _.camelCase('Foo Bar');
	     * // => 'fooBar'
	     *
	     * _.camelCase('--foo-bar--');
	     * // => 'fooBar'
	     *
	     * _.camelCase('__FOO_BAR__');
	     * // => 'fooBar'
	     */
	    var camelCase = createCompounder(function(result, word, index) {
	      word = word.toLowerCase();
	      return result + (index ? capitalize(word) : word);
	    });

	    /**
	     * Converts the first character of `string` to upper case and the remaining
	     * to lower case.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category String
	     * @param {string} [string=''] The string to capitalize.
	     * @returns {string} Returns the capitalized string.
	     * @example
	     *
	     * _.capitalize('FRED');
	     * // => 'Fred'
	     */
	    function capitalize(string) {
	      return upperFirst(toString(string).toLowerCase());
	    }

	    /**
	     * Deburrs `string` by converting
	     * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
	     * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)
	     * letters to basic Latin letters and removing
	     * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category String
	     * @param {string} [string=''] The string to deburr.
	     * @returns {string} Returns the deburred string.
	     * @example
	     *
	     * _.deburr('déjà vu');
	     * // => 'deja vu'
	     */
	    function deburr(string) {
	      string = toString(string);
	      return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');
	    }

	    /**
	     * Checks if `string` ends with the given target string.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category String
	     * @param {string} [string=''] The string to inspect.
	     * @param {string} [target] The string to search for.
	     * @param {number} [position=string.length] The position to search up to.
	     * @returns {boolean} Returns `true` if `string` ends with `target`,
	     *  else `false`.
	     * @example
	     *
	     * _.endsWith('abc', 'c');
	     * // => true
	     *
	     * _.endsWith('abc', 'b');
	     * // => false
	     *
	     * _.endsWith('abc', 'b', 2);
	     * // => true
	     */
	    function endsWith(string, target, position) {
	      string = toString(string);
	      target = baseToString(target);

	      var length = string.length;
	      position = position === undefined$1
	        ? length
	        : baseClamp(toInteger(position), 0, length);

	      var end = position;
	      position -= target.length;
	      return position >= 0 && string.slice(position, end) == target;
	    }

	    /**
	     * Converts the characters "&", "<", ">", '"', and "'" in `string` to their
	     * corresponding HTML entities.
	     *
	     * **Note:** No other characters are escaped. To escape additional
	     * characters use a third-party library like [_he_](https://mths.be/he).
	     *
	     * Though the ">" character is escaped for symmetry, characters like
	     * ">" and "/" don't need escaping in HTML and have no special meaning
	     * unless they're part of a tag or unquoted attribute value. See
	     * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)
	     * (under "semi-related fun fact") for more details.
	     *
	     * When working with HTML you should always
	     * [quote attribute values](http://wonko.com/post/html-escaping) to reduce
	     * XSS vectors.
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category String
	     * @param {string} [string=''] The string to escape.
	     * @returns {string} Returns the escaped string.
	     * @example
	     *
	     * _.escape('fred, barney, & pebbles');
	     * // => 'fred, barney, &amp; pebbles'
	     */
	    function escape(string) {
	      string = toString(string);
	      return (string && reHasUnescapedHtml.test(string))
	        ? string.replace(reUnescapedHtml, escapeHtmlChar)
	        : string;
	    }

	    /**
	     * Escapes the `RegExp` special characters "^", "$", "\", ".", "*", "+",
	     * "?", "(", ")", "[", "]", "{", "}", and "|" in `string`.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category String
	     * @param {string} [string=''] The string to escape.
	     * @returns {string} Returns the escaped string.
	     * @example
	     *
	     * _.escapeRegExp('[lodash](https://lodash.com/)');
	     * // => '\[lodash\]\(https://lodash\.com/\)'
	     */
	    function escapeRegExp(string) {
	      string = toString(string);
	      return (string && reHasRegExpChar.test(string))
	        ? string.replace(reRegExpChar, '\\$&')
	        : string;
	    }

	    /**
	     * Converts `string` to
	     * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category String
	     * @param {string} [string=''] The string to convert.
	     * @returns {string} Returns the kebab cased string.
	     * @example
	     *
	     * _.kebabCase('Foo Bar');
	     * // => 'foo-bar'
	     *
	     * _.kebabCase('fooBar');
	     * // => 'foo-bar'
	     *
	     * _.kebabCase('__FOO_BAR__');
	     * // => 'foo-bar'
	     */
	    var kebabCase = createCompounder(function(result, word, index) {
	      return result + (index ? '-' : '') + word.toLowerCase();
	    });

	    /**
	     * Converts `string`, as space separated words, to lower case.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category String
	     * @param {string} [string=''] The string to convert.
	     * @returns {string} Returns the lower cased string.
	     * @example
	     *
	     * _.lowerCase('--Foo-Bar--');
	     * // => 'foo bar'
	     *
	     * _.lowerCase('fooBar');
	     * // => 'foo bar'
	     *
	     * _.lowerCase('__FOO_BAR__');
	     * // => 'foo bar'
	     */
	    var lowerCase = createCompounder(function(result, word, index) {
	      return result + (index ? ' ' : '') + word.toLowerCase();
	    });

	    /**
	     * Converts the first character of `string` to lower case.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category String
	     * @param {string} [string=''] The string to convert.
	     * @returns {string} Returns the converted string.
	     * @example
	     *
	     * _.lowerFirst('Fred');
	     * // => 'fred'
	     *
	     * _.lowerFirst('FRED');
	     * // => 'fRED'
	     */
	    var lowerFirst = createCaseFirst('toLowerCase');

	    /**
	     * Pads `string` on the left and right sides if it's shorter than `length`.
	     * Padding characters are truncated if they can't be evenly divided by `length`.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category String
	     * @param {string} [string=''] The string to pad.
	     * @param {number} [length=0] The padding length.
	     * @param {string} [chars=' '] The string used as padding.
	     * @returns {string} Returns the padded string.
	     * @example
	     *
	     * _.pad('abc', 8);
	     * // => '  abc   '
	     *
	     * _.pad('abc', 8, '_-');
	     * // => '_-abc_-_'
	     *
	     * _.pad('abc', 3);
	     * // => 'abc'
	     */
	    function pad(string, length, chars) {
	      string = toString(string);
	      length = toInteger(length);

	      var strLength = length ? stringSize(string) : 0;
	      if (!length || strLength >= length) {
	        return string;
	      }
	      var mid = (length - strLength) / 2;
	      return (
	        createPadding(nativeFloor(mid), chars) +
	        string +
	        createPadding(nativeCeil(mid), chars)
	      );
	    }

	    /**
	     * Pads `string` on the right side if it's shorter than `length`. Padding
	     * characters are truncated if they exceed `length`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category String
	     * @param {string} [string=''] The string to pad.
	     * @param {number} [length=0] The padding length.
	     * @param {string} [chars=' '] The string used as padding.
	     * @returns {string} Returns the padded string.
	     * @example
	     *
	     * _.padEnd('abc', 6);
	     * // => 'abc   '
	     *
	     * _.padEnd('abc', 6, '_-');
	     * // => 'abc_-_'
	     *
	     * _.padEnd('abc', 3);
	     * // => 'abc'
	     */
	    function padEnd(string, length, chars) {
	      string = toString(string);
	      length = toInteger(length);

	      var strLength = length ? stringSize(string) : 0;
	      return (length && strLength < length)
	        ? (string + createPadding(length - strLength, chars))
	        : string;
	    }

	    /**
	     * Pads `string` on the left side if it's shorter than `length`. Padding
	     * characters are truncated if they exceed `length`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category String
	     * @param {string} [string=''] The string to pad.
	     * @param {number} [length=0] The padding length.
	     * @param {string} [chars=' '] The string used as padding.
	     * @returns {string} Returns the padded string.
	     * @example
	     *
	     * _.padStart('abc', 6);
	     * // => '   abc'
	     *
	     * _.padStart('abc', 6, '_-');
	     * // => '_-_abc'
	     *
	     * _.padStart('abc', 3);
	     * // => 'abc'
	     */
	    function padStart(string, length, chars) {
	      string = toString(string);
	      length = toInteger(length);

	      var strLength = length ? stringSize(string) : 0;
	      return (length && strLength < length)
	        ? (createPadding(length - strLength, chars) + string)
	        : string;
	    }

	    /**
	     * Converts `string` to an integer of the specified radix. If `radix` is
	     * `undefined` or `0`, a `radix` of `10` is used unless `value` is a
	     * hexadecimal, in which case a `radix` of `16` is used.
	     *
	     * **Note:** This method aligns with the
	     * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.
	     *
	     * @static
	     * @memberOf _
	     * @since 1.1.0
	     * @category String
	     * @param {string} string The string to convert.
	     * @param {number} [radix=10] The radix to interpret `value` by.
	     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
	     * @returns {number} Returns the converted integer.
	     * @example
	     *
	     * _.parseInt('08');
	     * // => 8
	     *
	     * _.map(['6', '08', '10'], _.parseInt);
	     * // => [6, 8, 10]
	     */
	    function parseInt(string, radix, guard) {
	      if (guard || radix == null) {
	        radix = 0;
	      } else if (radix) {
	        radix = +radix;
	      }
	      return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);
	    }

	    /**
	     * Repeats the given string `n` times.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category String
	     * @param {string} [string=''] The string to repeat.
	     * @param {number} [n=1] The number of times to repeat the string.
	     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
	     * @returns {string} Returns the repeated string.
	     * @example
	     *
	     * _.repeat('*', 3);
	     * // => '***'
	     *
	     * _.repeat('abc', 2);
	     * // => 'abcabc'
	     *
	     * _.repeat('abc', 0);
	     * // => ''
	     */
	    function repeat(string, n, guard) {
	      if ((guard ? isIterateeCall(string, n, guard) : n === undefined$1)) {
	        n = 1;
	      } else {
	        n = toInteger(n);
	      }
	      return baseRepeat(toString(string), n);
	    }

	    /**
	     * Replaces matches for `pattern` in `string` with `replacement`.
	     *
	     * **Note:** This method is based on
	     * [`String#replace`](https://mdn.io/String/replace).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category String
	     * @param {string} [string=''] The string to modify.
	     * @param {RegExp|string} pattern The pattern to replace.
	     * @param {Function|string} replacement The match replacement.
	     * @returns {string} Returns the modified string.
	     * @example
	     *
	     * _.replace('Hi Fred', 'Fred', 'Barney');
	     * // => 'Hi Barney'
	     */
	    function replace() {
	      var args = arguments,
	          string = toString(args[0]);

	      return args.length < 3 ? string : string.replace(args[1], args[2]);
	    }

	    /**
	     * Converts `string` to
	     * [snake case](https://en.wikipedia.org/wiki/Snake_case).
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category String
	     * @param {string} [string=''] The string to convert.
	     * @returns {string} Returns the snake cased string.
	     * @example
	     *
	     * _.snakeCase('Foo Bar');
	     * // => 'foo_bar'
	     *
	     * _.snakeCase('fooBar');
	     * // => 'foo_bar'
	     *
	     * _.snakeCase('--FOO-BAR--');
	     * // => 'foo_bar'
	     */
	    var snakeCase = createCompounder(function(result, word, index) {
	      return result + (index ? '_' : '') + word.toLowerCase();
	    });

	    /**
	     * Splits `string` by `separator`.
	     *
	     * **Note:** This method is based on
	     * [`String#split`](https://mdn.io/String/split).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category String
	     * @param {string} [string=''] The string to split.
	     * @param {RegExp|string} separator The separator pattern to split by.
	     * @param {number} [limit] The length to truncate results to.
	     * @returns {Array} Returns the string segments.
	     * @example
	     *
	     * _.split('a-b-c', '-', 2);
	     * // => ['a', 'b']
	     */
	    function split(string, separator, limit) {
	      if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {
	        separator = limit = undefined$1;
	      }
	      limit = limit === undefined$1 ? MAX_ARRAY_LENGTH : limit >>> 0;
	      if (!limit) {
	        return [];
	      }
	      string = toString(string);
	      if (string && (
	            typeof separator == 'string' ||
	            (separator != null && !isRegExp(separator))
	          )) {
	        separator = baseToString(separator);
	        if (!separator && hasUnicode(string)) {
	          return castSlice(stringToArray(string), 0, limit);
	        }
	      }
	      return string.split(separator, limit);
	    }

	    /**
	     * Converts `string` to
	     * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).
	     *
	     * @static
	     * @memberOf _
	     * @since 3.1.0
	     * @category String
	     * @param {string} [string=''] The string to convert.
	     * @returns {string} Returns the start cased string.
	     * @example
	     *
	     * _.startCase('--foo-bar--');
	     * // => 'Foo Bar'
	     *
	     * _.startCase('fooBar');
	     * // => 'Foo Bar'
	     *
	     * _.startCase('__FOO_BAR__');
	     * // => 'FOO BAR'
	     */
	    var startCase = createCompounder(function(result, word, index) {
	      return result + (index ? ' ' : '') + upperFirst(word);
	    });

	    /**
	     * Checks if `string` starts with the given target string.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category String
	     * @param {string} [string=''] The string to inspect.
	     * @param {string} [target] The string to search for.
	     * @param {number} [position=0] The position to search from.
	     * @returns {boolean} Returns `true` if `string` starts with `target`,
	     *  else `false`.
	     * @example
	     *
	     * _.startsWith('abc', 'a');
	     * // => true
	     *
	     * _.startsWith('abc', 'b');
	     * // => false
	     *
	     * _.startsWith('abc', 'b', 1);
	     * // => true
	     */
	    function startsWith(string, target, position) {
	      string = toString(string);
	      position = position == null
	        ? 0
	        : baseClamp(toInteger(position), 0, string.length);

	      target = baseToString(target);
	      return string.slice(position, position + target.length) == target;
	    }

	    /**
	     * Creates a compiled template function that can interpolate data properties
	     * in "interpolate" delimiters, HTML-escape interpolated data properties in
	     * "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data
	     * properties may be accessed as free variables in the template. If a setting
	     * object is given, it takes precedence over `_.templateSettings` values.
	     *
	     * **Note:** In the development build `_.template` utilizes
	     * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)
	     * for easier debugging.
	     *
	     * For more information on precompiling templates see
	     * [lodash's custom builds documentation](https://lodash.com/custom-builds).
	     *
	     * For more information on Chrome extension sandboxes see
	     * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category String
	     * @param {string} [string=''] The template string.
	     * @param {Object} [options={}] The options object.
	     * @param {RegExp} [options.escape=_.templateSettings.escape]
	     *  The HTML "escape" delimiter.
	     * @param {RegExp} [options.evaluate=_.templateSettings.evaluate]
	     *  The "evaluate" delimiter.
	     * @param {Object} [options.imports=_.templateSettings.imports]
	     *  An object to import into the template as free variables.
	     * @param {RegExp} [options.interpolate=_.templateSettings.interpolate]
	     *  The "interpolate" delimiter.
	     * @param {string} [options.sourceURL='lodash.templateSources[n]']
	     *  The sourceURL of the compiled template.
	     * @param {string} [options.variable='obj']
	     *  The data object variable name.
	     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
	     * @returns {Function} Returns the compiled template function.
	     * @example
	     *
	     * // Use the "interpolate" delimiter to create a compiled template.
	     * var compiled = _.template('hello <%= user %>!');
	     * compiled({ 'user': 'fred' });
	     * // => 'hello fred!'
	     *
	     * // Use the HTML "escape" delimiter to escape data property values.
	     * var compiled = _.template('<b><%- value %></b>');
	     * compiled({ 'value': '<script>' });
	     * // => '<b>&lt;script&gt;</b>'
	     *
	     * // Use the "evaluate" delimiter to execute JavaScript and generate HTML.
	     * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>');
	     * compiled({ 'users': ['fred', 'barney'] });
	     * // => '<li>fred</li><li>barney</li>'
	     *
	     * // Use the internal `print` function in "evaluate" delimiters.
	     * var compiled = _.template('<% print("hello " + user); %>!');
	     * compiled({ 'user': 'barney' });
	     * // => 'hello barney!'
	     *
	     * // Use the ES template literal delimiter as an "interpolate" delimiter.
	     * // Disable support by replacing the "interpolate" delimiter.
	     * var compiled = _.template('hello ${ user }!');
	     * compiled({ 'user': 'pebbles' });
	     * // => 'hello pebbles!'
	     *
	     * // Use backslashes to treat delimiters as plain text.
	     * var compiled = _.template('<%= "\\<%- value %\\>" %>');
	     * compiled({ 'value': 'ignored' });
	     * // => '<%- value %>'
	     *
	     * // Use the `imports` option to import `jQuery` as `jq`.
	     * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>';
	     * var compiled = _.template(text, { 'imports': { 'jq': jQuery } });
	     * compiled({ 'users': ['fred', 'barney'] });
	     * // => '<li>fred</li><li>barney</li>'
	     *
	     * // Use the `sourceURL` option to specify a custom sourceURL for the template.
	     * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' });
	     * compiled(data);
	     * // => Find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector.
	     *
	     * // Use the `variable` option to ensure a with-statement isn't used in the compiled template.
	     * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' });
	     * compiled.source;
	     * // => function(data) {
	     * //   var __t, __p = '';
	     * //   __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!';
	     * //   return __p;
	     * // }
	     *
	     * // Use custom template delimiters.
	     * _.templateSettings.interpolate = /{{([\s\S]+?)}}/g;
	     * var compiled = _.template('hello {{ user }}!');
	     * compiled({ 'user': 'mustache' });
	     * // => 'hello mustache!'
	     *
	     * // Use the `source` property to inline compiled templates for meaningful
	     * // line numbers in error messages and stack traces.
	     * fs.writeFileSync(path.join(process.cwd(), 'jst.js'), '\
	     *   var JST = {\
	     *     "main": ' + _.template(mainText).source + '\
	     *   };\
	     * ');
	     */
	    function template(string, options, guard) {
	      // Based on John Resig's `tmpl` implementation
	      // (http://ejohn.org/blog/javascript-micro-templating/)
	      // and Laura Doktorova's doT.js (https://github.com/olado/doT).
	      var settings = lodash.templateSettings;

	      if (guard && isIterateeCall(string, options, guard)) {
	        options = undefined$1;
	      }
	      string = toString(string);
	      options = assignInWith({}, options, settings, customDefaultsAssignIn);

	      var imports = assignInWith({}, options.imports, settings.imports, customDefaultsAssignIn),
	          importsKeys = keys(imports),
	          importsValues = baseValues(imports, importsKeys);

	      var isEscaping,
	          isEvaluating,
	          index = 0,
	          interpolate = options.interpolate || reNoMatch,
	          source = "__p += '";

	      // Compile the regexp to match each delimiter.
	      var reDelimiters = RegExp(
	        (options.escape || reNoMatch).source + '|' +
	        interpolate.source + '|' +
	        (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' +
	        (options.evaluate || reNoMatch).source + '|$'
	      , 'g');

	      // Use a sourceURL for easier debugging.
	      var sourceURL = '//# sourceURL=' +
	        ('sourceURL' in options
	          ? options.sourceURL
	          : ('lodash.templateSources[' + (++templateCounter) + ']')
	        ) + '\n';

	      string.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {
	        interpolateValue || (interpolateValue = esTemplateValue);

	        // Escape characters that can't be included in string literals.
	        source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar);

	        // Replace delimiters with snippets.
	        if (escapeValue) {
	          isEscaping = true;
	          source += "' +\n__e(" + escapeValue + ") +\n'";
	        }
	        if (evaluateValue) {
	          isEvaluating = true;
	          source += "';\n" + evaluateValue + ";\n__p += '";
	        }
	        if (interpolateValue) {
	          source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'";
	        }
	        index = offset + match.length;

	        // The JS engine embedded in Adobe products needs `match` returned in
	        // order to produce the correct `offset` value.
	        return match;
	      });

	      source += "';\n";

	      // If `variable` is not specified wrap a with-statement around the generated
	      // code to add the data object to the top of the scope chain.
	      var variable = options.variable;
	      if (!variable) {
	        source = 'with (obj) {\n' + source + '\n}\n';
	      }
	      // Cleanup code by stripping empty strings.
	      source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source)
	        .replace(reEmptyStringMiddle, '$1')
	        .replace(reEmptyStringTrailing, '$1;');

	      // Frame code as the function body.
	      source = 'function(' + (variable || 'obj') + ') {\n' +
	        (variable
	          ? ''
	          : 'obj || (obj = {});\n'
	        ) +
	        "var __t, __p = ''" +
	        (isEscaping
	           ? ', __e = _.escape'
	           : ''
	        ) +
	        (isEvaluating
	          ? ', __j = Array.prototype.join;\n' +
	            "function print() { __p += __j.call(arguments, '') }\n"
	          : ';\n'
	        ) +
	        source +
	        'return __p\n}';

	      var result = attempt(function() {
	        return Function(importsKeys, sourceURL + 'return ' + source)
	          .apply(undefined$1, importsValues);
	      });

	      // Provide the compiled function's source by its `toString` method or
	      // the `source` property as a convenience for inlining compiled templates.
	      result.source = source;
	      if (isError(result)) {
	        throw result;
	      }
	      return result;
	    }

	    /**
	     * Converts `string`, as a whole, to lower case just like
	     * [String#toLowerCase](https://mdn.io/toLowerCase).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category String
	     * @param {string} [string=''] The string to convert.
	     * @returns {string} Returns the lower cased string.
	     * @example
	     *
	     * _.toLower('--Foo-Bar--');
	     * // => '--foo-bar--'
	     *
	     * _.toLower('fooBar');
	     * // => 'foobar'
	     *
	     * _.toLower('__FOO_BAR__');
	     * // => '__foo_bar__'
	     */
	    function toLower(value) {
	      return toString(value).toLowerCase();
	    }

	    /**
	     * Converts `string`, as a whole, to upper case just like
	     * [String#toUpperCase](https://mdn.io/toUpperCase).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category String
	     * @param {string} [string=''] The string to convert.
	     * @returns {string} Returns the upper cased string.
	     * @example
	     *
	     * _.toUpper('--foo-bar--');
	     * // => '--FOO-BAR--'
	     *
	     * _.toUpper('fooBar');
	     * // => 'FOOBAR'
	     *
	     * _.toUpper('__foo_bar__');
	     * // => '__FOO_BAR__'
	     */
	    function toUpper(value) {
	      return toString(value).toUpperCase();
	    }

	    /**
	     * Removes leading and trailing whitespace or specified characters from `string`.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category String
	     * @param {string} [string=''] The string to trim.
	     * @param {string} [chars=whitespace] The characters to trim.
	     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
	     * @returns {string} Returns the trimmed string.
	     * @example
	     *
	     * _.trim('  abc  ');
	     * // => 'abc'
	     *
	     * _.trim('-_-abc-_-', '_-');
	     * // => 'abc'
	     *
	     * _.map(['  foo  ', '  bar  '], _.trim);
	     * // => ['foo', 'bar']
	     */
	    function trim(string, chars, guard) {
	      string = toString(string);
	      if (string && (guard || chars === undefined$1)) {
	        return string.replace(reTrim, '');
	      }
	      if (!string || !(chars = baseToString(chars))) {
	        return string;
	      }
	      var strSymbols = stringToArray(string),
	          chrSymbols = stringToArray(chars),
	          start = charsStartIndex(strSymbols, chrSymbols),
	          end = charsEndIndex(strSymbols, chrSymbols) + 1;

	      return castSlice(strSymbols, start, end).join('');
	    }

	    /**
	     * Removes trailing whitespace or specified characters from `string`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category String
	     * @param {string} [string=''] The string to trim.
	     * @param {string} [chars=whitespace] The characters to trim.
	     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
	     * @returns {string} Returns the trimmed string.
	     * @example
	     *
	     * _.trimEnd('  abc  ');
	     * // => '  abc'
	     *
	     * _.trimEnd('-_-abc-_-', '_-');
	     * // => '-_-abc'
	     */
	    function trimEnd(string, chars, guard) {
	      string = toString(string);
	      if (string && (guard || chars === undefined$1)) {
	        return string.replace(reTrimEnd, '');
	      }
	      if (!string || !(chars = baseToString(chars))) {
	        return string;
	      }
	      var strSymbols = stringToArray(string),
	          end = charsEndIndex(strSymbols, stringToArray(chars)) + 1;

	      return castSlice(strSymbols, 0, end).join('');
	    }

	    /**
	     * Removes leading whitespace or specified characters from `string`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category String
	     * @param {string} [string=''] The string to trim.
	     * @param {string} [chars=whitespace] The characters to trim.
	     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
	     * @returns {string} Returns the trimmed string.
	     * @example
	     *
	     * _.trimStart('  abc  ');
	     * // => 'abc  '
	     *
	     * _.trimStart('-_-abc-_-', '_-');
	     * // => 'abc-_-'
	     */
	    function trimStart(string, chars, guard) {
	      string = toString(string);
	      if (string && (guard || chars === undefined$1)) {
	        return string.replace(reTrimStart, '');
	      }
	      if (!string || !(chars = baseToString(chars))) {
	        return string;
	      }
	      var strSymbols = stringToArray(string),
	          start = charsStartIndex(strSymbols, stringToArray(chars));

	      return castSlice(strSymbols, start).join('');
	    }

	    /**
	     * Truncates `string` if it's longer than the given maximum string length.
	     * The last characters of the truncated string are replaced with the omission
	     * string which defaults to "...".
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category String
	     * @param {string} [string=''] The string to truncate.
	     * @param {Object} [options={}] The options object.
	     * @param {number} [options.length=30] The maximum string length.
	     * @param {string} [options.omission='...'] The string to indicate text is omitted.
	     * @param {RegExp|string} [options.separator] The separator pattern to truncate to.
	     * @returns {string} Returns the truncated string.
	     * @example
	     *
	     * _.truncate('hi-diddly-ho there, neighborino');
	     * // => 'hi-diddly-ho there, neighbo...'
	     *
	     * _.truncate('hi-diddly-ho there, neighborino', {
	     *   'length': 24,
	     *   'separator': ' '
	     * });
	     * // => 'hi-diddly-ho there,...'
	     *
	     * _.truncate('hi-diddly-ho there, neighborino', {
	     *   'length': 24,
	     *   'separator': /,? +/
	     * });
	     * // => 'hi-diddly-ho there...'
	     *
	     * _.truncate('hi-diddly-ho there, neighborino', {
	     *   'omission': ' [...]'
	     * });
	     * // => 'hi-diddly-ho there, neig [...]'
	     */
	    function truncate(string, options) {
	      var length = DEFAULT_TRUNC_LENGTH,
	          omission = DEFAULT_TRUNC_OMISSION;

	      if (isObject(options)) {
	        var separator = 'separator' in options ? options.separator : separator;
	        length = 'length' in options ? toInteger(options.length) : length;
	        omission = 'omission' in options ? baseToString(options.omission) : omission;
	      }
	      string = toString(string);

	      var strLength = string.length;
	      if (hasUnicode(string)) {
	        var strSymbols = stringToArray(string);
	        strLength = strSymbols.length;
	      }
	      if (length >= strLength) {
	        return string;
	      }
	      var end = length - stringSize(omission);
	      if (end < 1) {
	        return omission;
	      }
	      var result = strSymbols
	        ? castSlice(strSymbols, 0, end).join('')
	        : string.slice(0, end);

	      if (separator === undefined$1) {
	        return result + omission;
	      }
	      if (strSymbols) {
	        end += (result.length - end);
	      }
	      if (isRegExp(separator)) {
	        if (string.slice(end).search(separator)) {
	          var match,
	              substring = result;

	          if (!separator.global) {
	            separator = RegExp(separator.source, toString(reFlags.exec(separator)) + 'g');
	          }
	          separator.lastIndex = 0;
	          while ((match = separator.exec(substring))) {
	            var newEnd = match.index;
	          }
	          result = result.slice(0, newEnd === undefined$1 ? end : newEnd);
	        }
	      } else if (string.indexOf(baseToString(separator), end) != end) {
	        var index = result.lastIndexOf(separator);
	        if (index > -1) {
	          result = result.slice(0, index);
	        }
	      }
	      return result + omission;
	    }

	    /**
	     * The inverse of `_.escape`; this method converts the HTML entities
	     * `&amp;`, `&lt;`, `&gt;`, `&quot;`, and `&#39;` in `string` to
	     * their corresponding characters.
	     *
	     * **Note:** No other HTML entities are unescaped. To unescape additional
	     * HTML entities use a third-party library like [_he_](https://mths.be/he).
	     *
	     * @static
	     * @memberOf _
	     * @since 0.6.0
	     * @category String
	     * @param {string} [string=''] The string to unescape.
	     * @returns {string} Returns the unescaped string.
	     * @example
	     *
	     * _.unescape('fred, barney, &amp; pebbles');
	     * // => 'fred, barney, & pebbles'
	     */
	    function unescape(string) {
	      string = toString(string);
	      return (string && reHasEscapedHtml.test(string))
	        ? string.replace(reEscapedHtml, unescapeHtmlChar)
	        : string;
	    }

	    /**
	     * Converts `string`, as space separated words, to upper case.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category String
	     * @param {string} [string=''] The string to convert.
	     * @returns {string} Returns the upper cased string.
	     * @example
	     *
	     * _.upperCase('--foo-bar');
	     * // => 'FOO BAR'
	     *
	     * _.upperCase('fooBar');
	     * // => 'FOO BAR'
	     *
	     * _.upperCase('__foo_bar__');
	     * // => 'FOO BAR'
	     */
	    var upperCase = createCompounder(function(result, word, index) {
	      return result + (index ? ' ' : '') + word.toUpperCase();
	    });

	    /**
	     * Converts the first character of `string` to upper case.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category String
	     * @param {string} [string=''] The string to convert.
	     * @returns {string} Returns the converted string.
	     * @example
	     *
	     * _.upperFirst('fred');
	     * // => 'Fred'
	     *
	     * _.upperFirst('FRED');
	     * // => 'FRED'
	     */
	    var upperFirst = createCaseFirst('toUpperCase');

	    /**
	     * Splits `string` into an array of its words.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category String
	     * @param {string} [string=''] The string to inspect.
	     * @param {RegExp|string} [pattern] The pattern to match words.
	     * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
	     * @returns {Array} Returns the words of `string`.
	     * @example
	     *
	     * _.words('fred, barney, & pebbles');
	     * // => ['fred', 'barney', 'pebbles']
	     *
	     * _.words('fred, barney, & pebbles', /[^, ]+/g);
	     * // => ['fred', 'barney', '&', 'pebbles']
	     */
	    function words(string, pattern, guard) {
	      string = toString(string);
	      pattern = guard ? undefined$1 : pattern;

	      if (pattern === undefined$1) {
	        return hasUnicodeWord(string) ? unicodeWords(string) : asciiWords(string);
	      }
	      return string.match(pattern) || [];
	    }

	    /*------------------------------------------------------------------------*/

	    /**
	     * Attempts to invoke `func`, returning either the result or the caught error
	     * object. Any additional arguments are provided to `func` when it's invoked.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Util
	     * @param {Function} func The function to attempt.
	     * @param {...*} [args] The arguments to invoke `func` with.
	     * @returns {*} Returns the `func` result or error object.
	     * @example
	     *
	     * // Avoid throwing errors for invalid selectors.
	     * var elements = _.attempt(function(selector) {
	     *   return document.querySelectorAll(selector);
	     * }, '>_>');
	     *
	     * if (_.isError(elements)) {
	     *   elements = [];
	     * }
	     */
	    var attempt = baseRest(function(func, args) {
	      try {
	        return apply(func, undefined$1, args);
	      } catch (e) {
	        return isError(e) ? e : new Error(e);
	      }
	    });

	    /**
	     * Binds methods of an object to the object itself, overwriting the existing
	     * method.
	     *
	     * **Note:** This method doesn't set the "length" property of bound functions.
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category Util
	     * @param {Object} object The object to bind and assign the bound methods to.
	     * @param {...(string|string[])} methodNames The object method names to bind.
	     * @returns {Object} Returns `object`.
	     * @example
	     *
	     * var view = {
	     *   'label': 'docs',
	     *   'click': function() {
	     *     console.log('clicked ' + this.label);
	     *   }
	     * };
	     *
	     * _.bindAll(view, ['click']);
	     * jQuery(element).on('click', view.click);
	     * // => Logs 'clicked docs' when clicked.
	     */
	    var bindAll = flatRest(function(object, methodNames) {
	      arrayEach(methodNames, function(key) {
	        key = toKey(key);
	        baseAssignValue(object, key, bind(object[key], object));
	      });
	      return object;
	    });

	    /**
	     * Creates a function that iterates over `pairs` and invokes the corresponding
	     * function of the first predicate to return truthy. The predicate-function
	     * pairs are invoked with the `this` binding and arguments of the created
	     * function.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Util
	     * @param {Array} pairs The predicate-function pairs.
	     * @returns {Function} Returns the new composite function.
	     * @example
	     *
	     * var func = _.cond([
	     *   [_.matches({ 'a': 1 }),           _.constant('matches A')],
	     *   [_.conforms({ 'b': _.isNumber }), _.constant('matches B')],
	     *   [_.stubTrue,                      _.constant('no match')]
	     * ]);
	     *
	     * func({ 'a': 1, 'b': 2 });
	     * // => 'matches A'
	     *
	     * func({ 'a': 0, 'b': 1 });
	     * // => 'matches B'
	     *
	     * func({ 'a': '1', 'b': '2' });
	     * // => 'no match'
	     */
	    function cond(pairs) {
	      var length = pairs == null ? 0 : pairs.length,
	          toIteratee = getIteratee();

	      pairs = !length ? [] : arrayMap(pairs, function(pair) {
	        if (typeof pair[1] != 'function') {
	          throw new TypeError(FUNC_ERROR_TEXT);
	        }
	        return [toIteratee(pair[0]), pair[1]];
	      });

	      return baseRest(function(args) {
	        var index = -1;
	        while (++index < length) {
	          var pair = pairs[index];
	          if (apply(pair[0], this, args)) {
	            return apply(pair[1], this, args);
	          }
	        }
	      });
	    }

	    /**
	     * Creates a function that invokes the predicate properties of `source` with
	     * the corresponding property values of a given object, returning `true` if
	     * all predicates return truthy, else `false`.
	     *
	     * **Note:** The created function is equivalent to `_.conformsTo` with
	     * `source` partially applied.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Util
	     * @param {Object} source The object of property predicates to conform to.
	     * @returns {Function} Returns the new spec function.
	     * @example
	     *
	     * var objects = [
	     *   { 'a': 2, 'b': 1 },
	     *   { 'a': 1, 'b': 2 }
	     * ];
	     *
	     * _.filter(objects, _.conforms({ 'b': function(n) { return n > 1; } }));
	     * // => [{ 'a': 1, 'b': 2 }]
	     */
	    function conforms(source) {
	      return baseConforms(baseClone(source, CLONE_DEEP_FLAG));
	    }

	    /**
	     * Creates a function that returns `value`.
	     *
	     * @static
	     * @memberOf _
	     * @since 2.4.0
	     * @category Util
	     * @param {*} value The value to return from the new function.
	     * @returns {Function} Returns the new constant function.
	     * @example
	     *
	     * var objects = _.times(2, _.constant({ 'a': 1 }));
	     *
	     * console.log(objects);
	     * // => [{ 'a': 1 }, { 'a': 1 }]
	     *
	     * console.log(objects[0] === objects[1]);
	     * // => true
	     */
	    function constant(value) {
	      return function() {
	        return value;
	      };
	    }

	    /**
	     * Checks `value` to determine whether a default value should be returned in
	     * its place. The `defaultValue` is returned if `value` is `NaN`, `null`,
	     * or `undefined`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.14.0
	     * @category Util
	     * @param {*} value The value to check.
	     * @param {*} defaultValue The default value.
	     * @returns {*} Returns the resolved value.
	     * @example
	     *
	     * _.defaultTo(1, 10);
	     * // => 1
	     *
	     * _.defaultTo(undefined, 10);
	     * // => 10
	     */
	    function defaultTo(value, defaultValue) {
	      return (value == null || value !== value) ? defaultValue : value;
	    }

	    /**
	     * Creates a function that returns the result of invoking the given functions
	     * with the `this` binding of the created function, where each successive
	     * invocation is supplied the return value of the previous.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Util
	     * @param {...(Function|Function[])} [funcs] The functions to invoke.
	     * @returns {Function} Returns the new composite function.
	     * @see _.flowRight
	     * @example
	     *
	     * function square(n) {
	     *   return n * n;
	     * }
	     *
	     * var addSquare = _.flow([_.add, square]);
	     * addSquare(1, 2);
	     * // => 9
	     */
	    var flow = createFlow();

	    /**
	     * This method is like `_.flow` except that it creates a function that
	     * invokes the given functions from right to left.
	     *
	     * @static
	     * @since 3.0.0
	     * @memberOf _
	     * @category Util
	     * @param {...(Function|Function[])} [funcs] The functions to invoke.
	     * @returns {Function} Returns the new composite function.
	     * @see _.flow
	     * @example
	     *
	     * function square(n) {
	     *   return n * n;
	     * }
	     *
	     * var addSquare = _.flowRight([square, _.add]);
	     * addSquare(1, 2);
	     * // => 9
	     */
	    var flowRight = createFlow(true);

	    /**
	     * This method returns the first argument it receives.
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category Util
	     * @param {*} value Any value.
	     * @returns {*} Returns `value`.
	     * @example
	     *
	     * var object = { 'a': 1 };
	     *
	     * console.log(_.identity(object) === object);
	     * // => true
	     */
	    function identity(value) {
	      return value;
	    }

	    /**
	     * Creates a function that invokes `func` with the arguments of the created
	     * function. If `func` is a property name, the created function returns the
	     * property value for a given element. If `func` is an array or object, the
	     * created function returns `true` for elements that contain the equivalent
	     * source properties, otherwise it returns `false`.
	     *
	     * @static
	     * @since 4.0.0
	     * @memberOf _
	     * @category Util
	     * @param {*} [func=_.identity] The value to convert to a callback.
	     * @returns {Function} Returns the callback.
	     * @example
	     *
	     * var users = [
	     *   { 'user': 'barney', 'age': 36, 'active': true },
	     *   { 'user': 'fred',   'age': 40, 'active': false }
	     * ];
	     *
	     * // The `_.matches` iteratee shorthand.
	     * _.filter(users, _.iteratee({ 'user': 'barney', 'active': true }));
	     * // => [{ 'user': 'barney', 'age': 36, 'active': true }]
	     *
	     * // The `_.matchesProperty` iteratee shorthand.
	     * _.filter(users, _.iteratee(['user', 'fred']));
	     * // => [{ 'user': 'fred', 'age': 40 }]
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.map(users, _.iteratee('user'));
	     * // => ['barney', 'fred']
	     *
	     * // Create custom iteratee shorthands.
	     * _.iteratee = _.wrap(_.iteratee, function(iteratee, func) {
	     *   return !_.isRegExp(func) ? iteratee(func) : function(string) {
	     *     return func.test(string);
	     *   };
	     * });
	     *
	     * _.filter(['abc', 'def'], /ef/);
	     * // => ['def']
	     */
	    function iteratee(func) {
	      return baseIteratee(typeof func == 'function' ? func : baseClone(func, CLONE_DEEP_FLAG));
	    }

	    /**
	     * Creates a function that performs a partial deep comparison between a given
	     * object and `source`, returning `true` if the given object has equivalent
	     * property values, else `false`.
	     *
	     * **Note:** The created function is equivalent to `_.isMatch` with `source`
	     * partially applied.
	     *
	     * Partial comparisons will match empty array and empty object `source`
	     * values against any array or object value, respectively. See `_.isEqual`
	     * for a list of supported value comparisons.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Util
	     * @param {Object} source The object of property values to match.
	     * @returns {Function} Returns the new spec function.
	     * @example
	     *
	     * var objects = [
	     *   { 'a': 1, 'b': 2, 'c': 3 },
	     *   { 'a': 4, 'b': 5, 'c': 6 }
	     * ];
	     *
	     * _.filter(objects, _.matches({ 'a': 4, 'c': 6 }));
	     * // => [{ 'a': 4, 'b': 5, 'c': 6 }]
	     */
	    function matches(source) {
	      return baseMatches(baseClone(source, CLONE_DEEP_FLAG));
	    }

	    /**
	     * Creates a function that performs a partial deep comparison between the
	     * value at `path` of a given object to `srcValue`, returning `true` if the
	     * object value is equivalent, else `false`.
	     *
	     * **Note:** Partial comparisons will match empty array and empty object
	     * `srcValue` values against any array or object value, respectively. See
	     * `_.isEqual` for a list of supported value comparisons.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.2.0
	     * @category Util
	     * @param {Array|string} path The path of the property to get.
	     * @param {*} srcValue The value to match.
	     * @returns {Function} Returns the new spec function.
	     * @example
	     *
	     * var objects = [
	     *   { 'a': 1, 'b': 2, 'c': 3 },
	     *   { 'a': 4, 'b': 5, 'c': 6 }
	     * ];
	     *
	     * _.find(objects, _.matchesProperty('a', 4));
	     * // => { 'a': 4, 'b': 5, 'c': 6 }
	     */
	    function matchesProperty(path, srcValue) {
	      return baseMatchesProperty(path, baseClone(srcValue, CLONE_DEEP_FLAG));
	    }

	    /**
	     * Creates a function that invokes the method at `path` of a given object.
	     * Any additional arguments are provided to the invoked method.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.7.0
	     * @category Util
	     * @param {Array|string} path The path of the method to invoke.
	     * @param {...*} [args] The arguments to invoke the method with.
	     * @returns {Function} Returns the new invoker function.
	     * @example
	     *
	     * var objects = [
	     *   { 'a': { 'b': _.constant(2) } },
	     *   { 'a': { 'b': _.constant(1) } }
	     * ];
	     *
	     * _.map(objects, _.method('a.b'));
	     * // => [2, 1]
	     *
	     * _.map(objects, _.method(['a', 'b']));
	     * // => [2, 1]
	     */
	    var method = baseRest(function(path, args) {
	      return function(object) {
	        return baseInvoke(object, path, args);
	      };
	    });

	    /**
	     * The opposite of `_.method`; this method creates a function that invokes
	     * the method at a given path of `object`. Any additional arguments are
	     * provided to the invoked method.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.7.0
	     * @category Util
	     * @param {Object} object The object to query.
	     * @param {...*} [args] The arguments to invoke the method with.
	     * @returns {Function} Returns the new invoker function.
	     * @example
	     *
	     * var array = _.times(3, _.constant),
	     *     object = { 'a': array, 'b': array, 'c': array };
	     *
	     * _.map(['a[2]', 'c[0]'], _.methodOf(object));
	     * // => [2, 0]
	     *
	     * _.map([['a', '2'], ['c', '0']], _.methodOf(object));
	     * // => [2, 0]
	     */
	    var methodOf = baseRest(function(object, args) {
	      return function(path) {
	        return baseInvoke(object, path, args);
	      };
	    });

	    /**
	     * Adds all own enumerable string keyed function properties of a source
	     * object to the destination object. If `object` is a function, then methods
	     * are added to its prototype as well.
	     *
	     * **Note:** Use `_.runInContext` to create a pristine `lodash` function to
	     * avoid conflicts caused by modifying the original.
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category Util
	     * @param {Function|Object} [object=lodash] The destination object.
	     * @param {Object} source The object of functions to add.
	     * @param {Object} [options={}] The options object.
	     * @param {boolean} [options.chain=true] Specify whether mixins are chainable.
	     * @returns {Function|Object} Returns `object`.
	     * @example
	     *
	     * function vowels(string) {
	     *   return _.filter(string, function(v) {
	     *     return /[aeiou]/i.test(v);
	     *   });
	     * }
	     *
	     * _.mixin({ 'vowels': vowels });
	     * _.vowels('fred');
	     * // => ['e']
	     *
	     * _('fred').vowels().value();
	     * // => ['e']
	     *
	     * _.mixin({ 'vowels': vowels }, { 'chain': false });
	     * _('fred').vowels();
	     * // => ['e']
	     */
	    function mixin(object, source, options) {
	      var props = keys(source),
	          methodNames = baseFunctions(source, props);

	      if (options == null &&
	          !(isObject(source) && (methodNames.length || !props.length))) {
	        options = source;
	        source = object;
	        object = this;
	        methodNames = baseFunctions(source, keys(source));
	      }
	      var chain = !(isObject(options) && 'chain' in options) || !!options.chain,
	          isFunc = isFunction(object);

	      arrayEach(methodNames, function(methodName) {
	        var func = source[methodName];
	        object[methodName] = func;
	        if (isFunc) {
	          object.prototype[methodName] = function() {
	            var chainAll = this.__chain__;
	            if (chain || chainAll) {
	              var result = object(this.__wrapped__),
	                  actions = result.__actions__ = copyArray(this.__actions__);

	              actions.push({ 'func': func, 'args': arguments, 'thisArg': object });
	              result.__chain__ = chainAll;
	              return result;
	            }
	            return func.apply(object, arrayPush([this.value()], arguments));
	          };
	        }
	      });

	      return object;
	    }

	    /**
	     * Reverts the `_` variable to its previous value and returns a reference to
	     * the `lodash` function.
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category Util
	     * @returns {Function} Returns the `lodash` function.
	     * @example
	     *
	     * var lodash = _.noConflict();
	     */
	    function noConflict() {
	      if (root._ === this) {
	        root._ = oldDash;
	      }
	      return this;
	    }

	    /**
	     * This method returns `undefined`.
	     *
	     * @static
	     * @memberOf _
	     * @since 2.3.0
	     * @category Util
	     * @example
	     *
	     * _.times(2, _.noop);
	     * // => [undefined, undefined]
	     */
	    function noop() {
	      // No operation performed.
	    }

	    /**
	     * Creates a function that gets the argument at index `n`. If `n` is negative,
	     * the nth argument from the end is returned.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Util
	     * @param {number} [n=0] The index of the argument to return.
	     * @returns {Function} Returns the new pass-thru function.
	     * @example
	     *
	     * var func = _.nthArg(1);
	     * func('a', 'b', 'c', 'd');
	     * // => 'b'
	     *
	     * var func = _.nthArg(-2);
	     * func('a', 'b', 'c', 'd');
	     * // => 'c'
	     */
	    function nthArg(n) {
	      n = toInteger(n);
	      return baseRest(function(args) {
	        return baseNth(args, n);
	      });
	    }

	    /**
	     * Creates a function that invokes `iteratees` with the arguments it receives
	     * and returns their results.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Util
	     * @param {...(Function|Function[])} [iteratees=[_.identity]]
	     *  The iteratees to invoke.
	     * @returns {Function} Returns the new function.
	     * @example
	     *
	     * var func = _.over([Math.max, Math.min]);
	     *
	     * func(1, 2, 3, 4);
	     * // => [4, 1]
	     */
	    var over = createOver(arrayMap);

	    /**
	     * Creates a function that checks if **all** of the `predicates` return
	     * truthy when invoked with the arguments it receives.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Util
	     * @param {...(Function|Function[])} [predicates=[_.identity]]
	     *  The predicates to check.
	     * @returns {Function} Returns the new function.
	     * @example
	     *
	     * var func = _.overEvery([Boolean, isFinite]);
	     *
	     * func('1');
	     * // => true
	     *
	     * func(null);
	     * // => false
	     *
	     * func(NaN);
	     * // => false
	     */
	    var overEvery = createOver(arrayEvery);

	    /**
	     * Creates a function that checks if **any** of the `predicates` return
	     * truthy when invoked with the arguments it receives.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Util
	     * @param {...(Function|Function[])} [predicates=[_.identity]]
	     *  The predicates to check.
	     * @returns {Function} Returns the new function.
	     * @example
	     *
	     * var func = _.overSome([Boolean, isFinite]);
	     *
	     * func('1');
	     * // => true
	     *
	     * func(null);
	     * // => true
	     *
	     * func(NaN);
	     * // => false
	     */
	    var overSome = createOver(arraySome);

	    /**
	     * Creates a function that returns the value at `path` of a given object.
	     *
	     * @static
	     * @memberOf _
	     * @since 2.4.0
	     * @category Util
	     * @param {Array|string} path The path of the property to get.
	     * @returns {Function} Returns the new accessor function.
	     * @example
	     *
	     * var objects = [
	     *   { 'a': { 'b': 2 } },
	     *   { 'a': { 'b': 1 } }
	     * ];
	     *
	     * _.map(objects, _.property('a.b'));
	     * // => [2, 1]
	     *
	     * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');
	     * // => [1, 2]
	     */
	    function property(path) {
	      return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);
	    }

	    /**
	     * The opposite of `_.property`; this method creates a function that returns
	     * the value at a given path of `object`.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.0.0
	     * @category Util
	     * @param {Object} object The object to query.
	     * @returns {Function} Returns the new accessor function.
	     * @example
	     *
	     * var array = [0, 1, 2],
	     *     object = { 'a': array, 'b': array, 'c': array };
	     *
	     * _.map(['a[2]', 'c[0]'], _.propertyOf(object));
	     * // => [2, 0]
	     *
	     * _.map([['a', '2'], ['c', '0']], _.propertyOf(object));
	     * // => [2, 0]
	     */
	    function propertyOf(object) {
	      return function(path) {
	        return object == null ? undefined$1 : baseGet(object, path);
	      };
	    }

	    /**
	     * Creates an array of numbers (positive and/or negative) progressing from
	     * `start` up to, but not including, `end`. A step of `-1` is used if a negative
	     * `start` is specified without an `end` or `step`. If `end` is not specified,
	     * it's set to `start` with `start` then set to `0`.
	     *
	     * **Note:** JavaScript follows the IEEE-754 standard for resolving
	     * floating-point values which can produce unexpected results.
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category Util
	     * @param {number} [start=0] The start of the range.
	     * @param {number} end The end of the range.
	     * @param {number} [step=1] The value to increment or decrement by.
	     * @returns {Array} Returns the range of numbers.
	     * @see _.inRange, _.rangeRight
	     * @example
	     *
	     * _.range(4);
	     * // => [0, 1, 2, 3]
	     *
	     * _.range(-4);
	     * // => [0, -1, -2, -3]
	     *
	     * _.range(1, 5);
	     * // => [1, 2, 3, 4]
	     *
	     * _.range(0, 20, 5);
	     * // => [0, 5, 10, 15]
	     *
	     * _.range(0, -4, -1);
	     * // => [0, -1, -2, -3]
	     *
	     * _.range(1, 4, 0);
	     * // => [1, 1, 1]
	     *
	     * _.range(0);
	     * // => []
	     */
	    var range = createRange();

	    /**
	     * This method is like `_.range` except that it populates values in
	     * descending order.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Util
	     * @param {number} [start=0] The start of the range.
	     * @param {number} end The end of the range.
	     * @param {number} [step=1] The value to increment or decrement by.
	     * @returns {Array} Returns the range of numbers.
	     * @see _.inRange, _.range
	     * @example
	     *
	     * _.rangeRight(4);
	     * // => [3, 2, 1, 0]
	     *
	     * _.rangeRight(-4);
	     * // => [-3, -2, -1, 0]
	     *
	     * _.rangeRight(1, 5);
	     * // => [4, 3, 2, 1]
	     *
	     * _.rangeRight(0, 20, 5);
	     * // => [15, 10, 5, 0]
	     *
	     * _.rangeRight(0, -4, -1);
	     * // => [-3, -2, -1, 0]
	     *
	     * _.rangeRight(1, 4, 0);
	     * // => [1, 1, 1]
	     *
	     * _.rangeRight(0);
	     * // => []
	     */
	    var rangeRight = createRange(true);

	    /**
	     * This method returns a new empty array.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.13.0
	     * @category Util
	     * @returns {Array} Returns the new empty array.
	     * @example
	     *
	     * var arrays = _.times(2, _.stubArray);
	     *
	     * console.log(arrays);
	     * // => [[], []]
	     *
	     * console.log(arrays[0] === arrays[1]);
	     * // => false
	     */
	    function stubArray() {
	      return [];
	    }

	    /**
	     * This method returns `false`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.13.0
	     * @category Util
	     * @returns {boolean} Returns `false`.
	     * @example
	     *
	     * _.times(2, _.stubFalse);
	     * // => [false, false]
	     */
	    function stubFalse() {
	      return false;
	    }

	    /**
	     * This method returns a new empty object.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.13.0
	     * @category Util
	     * @returns {Object} Returns the new empty object.
	     * @example
	     *
	     * var objects = _.times(2, _.stubObject);
	     *
	     * console.log(objects);
	     * // => [{}, {}]
	     *
	     * console.log(objects[0] === objects[1]);
	     * // => false
	     */
	    function stubObject() {
	      return {};
	    }

	    /**
	     * This method returns an empty string.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.13.0
	     * @category Util
	     * @returns {string} Returns the empty string.
	     * @example
	     *
	     * _.times(2, _.stubString);
	     * // => ['', '']
	     */
	    function stubString() {
	      return '';
	    }

	    /**
	     * This method returns `true`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.13.0
	     * @category Util
	     * @returns {boolean} Returns `true`.
	     * @example
	     *
	     * _.times(2, _.stubTrue);
	     * // => [true, true]
	     */
	    function stubTrue() {
	      return true;
	    }

	    /**
	     * Invokes the iteratee `n` times, returning an array of the results of
	     * each invocation. The iteratee is invoked with one argument; (index).
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category Util
	     * @param {number} n The number of times to invoke `iteratee`.
	     * @param {Function} [iteratee=_.identity] The function invoked per iteration.
	     * @returns {Array} Returns the array of results.
	     * @example
	     *
	     * _.times(3, String);
	     * // => ['0', '1', '2']
	     *
	     *  _.times(4, _.constant(0));
	     * // => [0, 0, 0, 0]
	     */
	    function times(n, iteratee) {
	      n = toInteger(n);
	      if (n < 1 || n > MAX_SAFE_INTEGER) {
	        return [];
	      }
	      var index = MAX_ARRAY_LENGTH,
	          length = nativeMin(n, MAX_ARRAY_LENGTH);

	      iteratee = getIteratee(iteratee);
	      n -= MAX_ARRAY_LENGTH;

	      var result = baseTimes(length, iteratee);
	      while (++index < n) {
	        iteratee(index);
	      }
	      return result;
	    }

	    /**
	     * Converts `value` to a property path array.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Util
	     * @param {*} value The value to convert.
	     * @returns {Array} Returns the new property path array.
	     * @example
	     *
	     * _.toPath('a.b.c');
	     * // => ['a', 'b', 'c']
	     *
	     * _.toPath('a[0].b.c');
	     * // => ['a', '0', 'b', 'c']
	     */
	    function toPath(value) {
	      if (isArray(value)) {
	        return arrayMap(value, toKey);
	      }
	      return isSymbol(value) ? [value] : copyArray(stringToPath(toString(value)));
	    }

	    /**
	     * Generates a unique ID. If `prefix` is given, the ID is appended to it.
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category Util
	     * @param {string} [prefix=''] The value to prefix the ID with.
	     * @returns {string} Returns the unique ID.
	     * @example
	     *
	     * _.uniqueId('contact_');
	     * // => 'contact_104'
	     *
	     * _.uniqueId();
	     * // => '105'
	     */
	    function uniqueId(prefix) {
	      var id = ++idCounter;
	      return toString(prefix) + id;
	    }

	    /*------------------------------------------------------------------------*/

	    /**
	     * Adds two numbers.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.4.0
	     * @category Math
	     * @param {number} augend The first number in an addition.
	     * @param {number} addend The second number in an addition.
	     * @returns {number} Returns the total.
	     * @example
	     *
	     * _.add(6, 4);
	     * // => 10
	     */
	    var add = createMathOperation(function(augend, addend) {
	      return augend + addend;
	    }, 0);

	    /**
	     * Computes `number` rounded up to `precision`.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.10.0
	     * @category Math
	     * @param {number} number The number to round up.
	     * @param {number} [precision=0] The precision to round up to.
	     * @returns {number} Returns the rounded up number.
	     * @example
	     *
	     * _.ceil(4.006);
	     * // => 5
	     *
	     * _.ceil(6.004, 2);
	     * // => 6.01
	     *
	     * _.ceil(6040, -2);
	     * // => 6100
	     */
	    var ceil = createRound('ceil');

	    /**
	     * Divide two numbers.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.7.0
	     * @category Math
	     * @param {number} dividend The first number in a division.
	     * @param {number} divisor The second number in a division.
	     * @returns {number} Returns the quotient.
	     * @example
	     *
	     * _.divide(6, 4);
	     * // => 1.5
	     */
	    var divide = createMathOperation(function(dividend, divisor) {
	      return dividend / divisor;
	    }, 1);

	    /**
	     * Computes `number` rounded down to `precision`.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.10.0
	     * @category Math
	     * @param {number} number The number to round down.
	     * @param {number} [precision=0] The precision to round down to.
	     * @returns {number} Returns the rounded down number.
	     * @example
	     *
	     * _.floor(4.006);
	     * // => 4
	     *
	     * _.floor(0.046, 2);
	     * // => 0.04
	     *
	     * _.floor(4060, -2);
	     * // => 4000
	     */
	    var floor = createRound('floor');

	    /**
	     * Computes the maximum value of `array`. If `array` is empty or falsey,
	     * `undefined` is returned.
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category Math
	     * @param {Array} array The array to iterate over.
	     * @returns {*} Returns the maximum value.
	     * @example
	     *
	     * _.max([4, 2, 8, 6]);
	     * // => 8
	     *
	     * _.max([]);
	     * // => undefined
	     */
	    function max(array) {
	      return (array && array.length)
	        ? baseExtremum(array, identity, baseGt)
	        : undefined$1;
	    }

	    /**
	     * This method is like `_.max` except that it accepts `iteratee` which is
	     * invoked for each element in `array` to generate the criterion by which
	     * the value is ranked. The iteratee is invoked with one argument: (value).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Math
	     * @param {Array} array The array to iterate over.
	     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
	     * @returns {*} Returns the maximum value.
	     * @example
	     *
	     * var objects = [{ 'n': 1 }, { 'n': 2 }];
	     *
	     * _.maxBy(objects, function(o) { return o.n; });
	     * // => { 'n': 2 }
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.maxBy(objects, 'n');
	     * // => { 'n': 2 }
	     */
	    function maxBy(array, iteratee) {
	      return (array && array.length)
	        ? baseExtremum(array, getIteratee(iteratee, 2), baseGt)
	        : undefined$1;
	    }

	    /**
	     * Computes the mean of the values in `array`.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Math
	     * @param {Array} array The array to iterate over.
	     * @returns {number} Returns the mean.
	     * @example
	     *
	     * _.mean([4, 2, 8, 6]);
	     * // => 5
	     */
	    function mean(array) {
	      return baseMean(array, identity);
	    }

	    /**
	     * This method is like `_.mean` except that it accepts `iteratee` which is
	     * invoked for each element in `array` to generate the value to be averaged.
	     * The iteratee is invoked with one argument: (value).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.7.0
	     * @category Math
	     * @param {Array} array The array to iterate over.
	     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
	     * @returns {number} Returns the mean.
	     * @example
	     *
	     * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
	     *
	     * _.meanBy(objects, function(o) { return o.n; });
	     * // => 5
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.meanBy(objects, 'n');
	     * // => 5
	     */
	    function meanBy(array, iteratee) {
	      return baseMean(array, getIteratee(iteratee, 2));
	    }

	    /**
	     * Computes the minimum value of `array`. If `array` is empty or falsey,
	     * `undefined` is returned.
	     *
	     * @static
	     * @since 0.1.0
	     * @memberOf _
	     * @category Math
	     * @param {Array} array The array to iterate over.
	     * @returns {*} Returns the minimum value.
	     * @example
	     *
	     * _.min([4, 2, 8, 6]);
	     * // => 2
	     *
	     * _.min([]);
	     * // => undefined
	     */
	    function min(array) {
	      return (array && array.length)
	        ? baseExtremum(array, identity, baseLt)
	        : undefined$1;
	    }

	    /**
	     * This method is like `_.min` except that it accepts `iteratee` which is
	     * invoked for each element in `array` to generate the criterion by which
	     * the value is ranked. The iteratee is invoked with one argument: (value).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Math
	     * @param {Array} array The array to iterate over.
	     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
	     * @returns {*} Returns the minimum value.
	     * @example
	     *
	     * var objects = [{ 'n': 1 }, { 'n': 2 }];
	     *
	     * _.minBy(objects, function(o) { return o.n; });
	     * // => { 'n': 1 }
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.minBy(objects, 'n');
	     * // => { 'n': 1 }
	     */
	    function minBy(array, iteratee) {
	      return (array && array.length)
	        ? baseExtremum(array, getIteratee(iteratee, 2), baseLt)
	        : undefined$1;
	    }

	    /**
	     * Multiply two numbers.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.7.0
	     * @category Math
	     * @param {number} multiplier The first number in a multiplication.
	     * @param {number} multiplicand The second number in a multiplication.
	     * @returns {number} Returns the product.
	     * @example
	     *
	     * _.multiply(6, 4);
	     * // => 24
	     */
	    var multiply = createMathOperation(function(multiplier, multiplicand) {
	      return multiplier * multiplicand;
	    }, 1);

	    /**
	     * Computes `number` rounded to `precision`.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.10.0
	     * @category Math
	     * @param {number} number The number to round.
	     * @param {number} [precision=0] The precision to round to.
	     * @returns {number} Returns the rounded number.
	     * @example
	     *
	     * _.round(4.006);
	     * // => 4
	     *
	     * _.round(4.006, 2);
	     * // => 4.01
	     *
	     * _.round(4060, -2);
	     * // => 4100
	     */
	    var round = createRound('round');

	    /**
	     * Subtract two numbers.
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Math
	     * @param {number} minuend The first number in a subtraction.
	     * @param {number} subtrahend The second number in a subtraction.
	     * @returns {number} Returns the difference.
	     * @example
	     *
	     * _.subtract(6, 4);
	     * // => 2
	     */
	    var subtract = createMathOperation(function(minuend, subtrahend) {
	      return minuend - subtrahend;
	    }, 0);

	    /**
	     * Computes the sum of the values in `array`.
	     *
	     * @static
	     * @memberOf _
	     * @since 3.4.0
	     * @category Math
	     * @param {Array} array The array to iterate over.
	     * @returns {number} Returns the sum.
	     * @example
	     *
	     * _.sum([4, 2, 8, 6]);
	     * // => 20
	     */
	    function sum(array) {
	      return (array && array.length)
	        ? baseSum(array, identity)
	        : 0;
	    }

	    /**
	     * This method is like `_.sum` except that it accepts `iteratee` which is
	     * invoked for each element in `array` to generate the value to be summed.
	     * The iteratee is invoked with one argument: (value).
	     *
	     * @static
	     * @memberOf _
	     * @since 4.0.0
	     * @category Math
	     * @param {Array} array The array to iterate over.
	     * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
	     * @returns {number} Returns the sum.
	     * @example
	     *
	     * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
	     *
	     * _.sumBy(objects, function(o) { return o.n; });
	     * // => 20
	     *
	     * // The `_.property` iteratee shorthand.
	     * _.sumBy(objects, 'n');
	     * // => 20
	     */
	    function sumBy(array, iteratee) {
	      return (array && array.length)
	        ? baseSum(array, getIteratee(iteratee, 2))
	        : 0;
	    }

	    /*------------------------------------------------------------------------*/

	    // Add methods that return wrapped values in chain sequences.
	    lodash.after = after;
	    lodash.ary = ary;
	    lodash.assign = assign;
	    lodash.assignIn = assignIn;
	    lodash.assignInWith = assignInWith;
	    lodash.assignWith = assignWith;
	    lodash.at = at;
	    lodash.before = before;
	    lodash.bind = bind;
	    lodash.bindAll = bindAll;
	    lodash.bindKey = bindKey;
	    lodash.castArray = castArray;
	    lodash.chain = chain;
	    lodash.chunk = chunk;
	    lodash.compact = compact;
	    lodash.concat = concat;
	    lodash.cond = cond;
	    lodash.conforms = conforms;
	    lodash.constant = constant;
	    lodash.countBy = countBy;
	    lodash.create = create;
	    lodash.curry = curry;
	    lodash.curryRight = curryRight;
	    lodash.debounce = debounce;
	    lodash.defaults = defaults;
	    lodash.defaultsDeep = defaultsDeep;
	    lodash.defer = defer;
	    lodash.delay = delay;
	    lodash.difference = difference;
	    lodash.differenceBy = differenceBy;
	    lodash.differenceWith = differenceWith;
	    lodash.drop = drop;
	    lodash.dropRight = dropRight;
	    lodash.dropRightWhile = dropRightWhile;
	    lodash.dropWhile = dropWhile;
	    lodash.fill = fill;
	    lodash.filter = filter;
	    lodash.flatMap = flatMap;
	    lodash.flatMapDeep = flatMapDeep;
	    lodash.flatMapDepth = flatMapDepth;
	    lodash.flatten = flatten;
	    lodash.flattenDeep = flattenDeep;
	    lodash.flattenDepth = flattenDepth;
	    lodash.flip = flip;
	    lodash.flow = flow;
	    lodash.flowRight = flowRight;
	    lodash.fromPairs = fromPairs;
	    lodash.functions = functions;
	    lodash.functionsIn = functionsIn;
	    lodash.groupBy = groupBy;
	    lodash.initial = initial;
	    lodash.intersection = intersection;
	    lodash.intersectionBy = intersectionBy;
	    lodash.intersectionWith = intersectionWith;
	    lodash.invert = invert;
	    lodash.invertBy = invertBy;
	    lodash.invokeMap = invokeMap;
	    lodash.iteratee = iteratee;
	    lodash.keyBy = keyBy;
	    lodash.keys = keys;
	    lodash.keysIn = keysIn;
	    lodash.map = map;
	    lodash.mapKeys = mapKeys;
	    lodash.mapValues = mapValues;
	    lodash.matches = matches;
	    lodash.matchesProperty = matchesProperty;
	    lodash.memoize = memoize;
	    lodash.merge = merge;
	    lodash.mergeWith = mergeWith;
	    lodash.method = method;
	    lodash.methodOf = methodOf;
	    lodash.mixin = mixin;
	    lodash.negate = negate;
	    lodash.nthArg = nthArg;
	    lodash.omit = omit;
	    lodash.omitBy = omitBy;
	    lodash.once = once;
	    lodash.orderBy = orderBy;
	    lodash.over = over;
	    lodash.overArgs = overArgs;
	    lodash.overEvery = overEvery;
	    lodash.overSome = overSome;
	    lodash.partial = partial;
	    lodash.partialRight = partialRight;
	    lodash.partition = partition;
	    lodash.pick = pick;
	    lodash.pickBy = pickBy;
	    lodash.property = property;
	    lodash.propertyOf = propertyOf;
	    lodash.pull = pull;
	    lodash.pullAll = pullAll;
	    lodash.pullAllBy = pullAllBy;
	    lodash.pullAllWith = pullAllWith;
	    lodash.pullAt = pullAt;
	    lodash.range = range;
	    lodash.rangeRight = rangeRight;
	    lodash.rearg = rearg;
	    lodash.reject = reject;
	    lodash.remove = remove;
	    lodash.rest = rest;
	    lodash.reverse = reverse;
	    lodash.sampleSize = sampleSize;
	    lodash.set = set;
	    lodash.setWith = setWith;
	    lodash.shuffle = shuffle;
	    lodash.slice = slice;
	    lodash.sortBy = sortBy;
	    lodash.sortedUniq = sortedUniq;
	    lodash.sortedUniqBy = sortedUniqBy;
	    lodash.split = split;
	    lodash.spread = spread;
	    lodash.tail = tail;
	    lodash.take = take;
	    lodash.takeRight = takeRight;
	    lodash.takeRightWhile = takeRightWhile;
	    lodash.takeWhile = takeWhile;
	    lodash.tap = tap;
	    lodash.throttle = throttle;
	    lodash.thru = thru;
	    lodash.toArray = toArray;
	    lodash.toPairs = toPairs;
	    lodash.toPairsIn = toPairsIn;
	    lodash.toPath = toPath;
	    lodash.toPlainObject = toPlainObject;
	    lodash.transform = transform;
	    lodash.unary = unary;
	    lodash.union = union;
	    lodash.unionBy = unionBy;
	    lodash.unionWith = unionWith;
	    lodash.uniq = uniq;
	    lodash.uniqBy = uniqBy;
	    lodash.uniqWith = uniqWith;
	    lodash.unset = unset;
	    lodash.unzip = unzip;
	    lodash.unzipWith = unzipWith;
	    lodash.update = update;
	    lodash.updateWith = updateWith;
	    lodash.values = values;
	    lodash.valuesIn = valuesIn;
	    lodash.without = without;
	    lodash.words = words;
	    lodash.wrap = wrap;
	    lodash.xor = xor;
	    lodash.xorBy = xorBy;
	    lodash.xorWith = xorWith;
	    lodash.zip = zip;
	    lodash.zipObject = zipObject;
	    lodash.zipObjectDeep = zipObjectDeep;
	    lodash.zipWith = zipWith;

	    // Add aliases.
	    lodash.entries = toPairs;
	    lodash.entriesIn = toPairsIn;
	    lodash.extend = assignIn;
	    lodash.extendWith = assignInWith;

	    // Add methods to `lodash.prototype`.
	    mixin(lodash, lodash);

	    /*------------------------------------------------------------------------*/

	    // Add methods that return unwrapped values in chain sequences.
	    lodash.add = add;
	    lodash.attempt = attempt;
	    lodash.camelCase = camelCase;
	    lodash.capitalize = capitalize;
	    lodash.ceil = ceil;
	    lodash.clamp = clamp;
	    lodash.clone = clone;
	    lodash.cloneDeep = cloneDeep;
	    lodash.cloneDeepWith = cloneDeepWith;
	    lodash.cloneWith = cloneWith;
	    lodash.conformsTo = conformsTo;
	    lodash.deburr = deburr;
	    lodash.defaultTo = defaultTo;
	    lodash.divide = divide;
	    lodash.endsWith = endsWith;
	    lodash.eq = eq;
	    lodash.escape = escape;
	    lodash.escapeRegExp = escapeRegExp;
	    lodash.every = every;
	    lodash.find = find;
	    lodash.findIndex = findIndex;
	    lodash.findKey = findKey;
	    lodash.findLast = findLast;
	    lodash.findLastIndex = findLastIndex;
	    lodash.findLastKey = findLastKey;
	    lodash.floor = floor;
	    lodash.forEach = forEach;
	    lodash.forEachRight = forEachRight;
	    lodash.forIn = forIn;
	    lodash.forInRight = forInRight;
	    lodash.forOwn = forOwn;
	    lodash.forOwnRight = forOwnRight;
	    lodash.get = get;
	    lodash.gt = gt;
	    lodash.gte = gte;
	    lodash.has = has;
	    lodash.hasIn = hasIn;
	    lodash.head = head;
	    lodash.identity = identity;
	    lodash.includes = includes;
	    lodash.indexOf = indexOf;
	    lodash.inRange = inRange;
	    lodash.invoke = invoke;
	    lodash.isArguments = isArguments;
	    lodash.isArray = isArray;
	    lodash.isArrayBuffer = isArrayBuffer;
	    lodash.isArrayLike = isArrayLike;
	    lodash.isArrayLikeObject = isArrayLikeObject;
	    lodash.isBoolean = isBoolean;
	    lodash.isBuffer = isBuffer;
	    lodash.isDate = isDate;
	    lodash.isElement = isElement;
	    lodash.isEmpty = isEmpty;
	    lodash.isEqual = isEqual;
	    lodash.isEqualWith = isEqualWith;
	    lodash.isError = isError;
	    lodash.isFinite = isFinite;
	    lodash.isFunction = isFunction;
	    lodash.isInteger = isInteger;
	    lodash.isLength = isLength;
	    lodash.isMap = isMap;
	    lodash.isMatch = isMatch;
	    lodash.isMatchWith = isMatchWith;
	    lodash.isNaN = isNaN;
	    lodash.isNative = isNative;
	    lodash.isNil = isNil;
	    lodash.isNull = isNull;
	    lodash.isNumber = isNumber;
	    lodash.isObject = isObject;
	    lodash.isObjectLike = isObjectLike;
	    lodash.isPlainObject = isPlainObject;
	    lodash.isRegExp = isRegExp;
	    lodash.isSafeInteger = isSafeInteger;
	    lodash.isSet = isSet;
	    lodash.isString = isString;
	    lodash.isSymbol = isSymbol;
	    lodash.isTypedArray = isTypedArray;
	    lodash.isUndefined = isUndefined;
	    lodash.isWeakMap = isWeakMap;
	    lodash.isWeakSet = isWeakSet;
	    lodash.join = join;
	    lodash.kebabCase = kebabCase;
	    lodash.last = last;
	    lodash.lastIndexOf = lastIndexOf;
	    lodash.lowerCase = lowerCase;
	    lodash.lowerFirst = lowerFirst;
	    lodash.lt = lt;
	    lodash.lte = lte;
	    lodash.max = max;
	    lodash.maxBy = maxBy;
	    lodash.mean = mean;
	    lodash.meanBy = meanBy;
	    lodash.min = min;
	    lodash.minBy = minBy;
	    lodash.stubArray = stubArray;
	    lodash.stubFalse = stubFalse;
	    lodash.stubObject = stubObject;
	    lodash.stubString = stubString;
	    lodash.stubTrue = stubTrue;
	    lodash.multiply = multiply;
	    lodash.nth = nth;
	    lodash.noConflict = noConflict;
	    lodash.noop = noop;
	    lodash.now = now;
	    lodash.pad = pad;
	    lodash.padEnd = padEnd;
	    lodash.padStart = padStart;
	    lodash.parseInt = parseInt;
	    lodash.random = random;
	    lodash.reduce = reduce;
	    lodash.reduceRight = reduceRight;
	    lodash.repeat = repeat;
	    lodash.replace = replace;
	    lodash.result = result;
	    lodash.round = round;
	    lodash.runInContext = runInContext;
	    lodash.sample = sample;
	    lodash.size = size;
	    lodash.snakeCase = snakeCase;
	    lodash.some = some;
	    lodash.sortedIndex = sortedIndex;
	    lodash.sortedIndexBy = sortedIndexBy;
	    lodash.sortedIndexOf = sortedIndexOf;
	    lodash.sortedLastIndex = sortedLastIndex;
	    lodash.sortedLastIndexBy = sortedLastIndexBy;
	    lodash.sortedLastIndexOf = sortedLastIndexOf;
	    lodash.startCase = startCase;
	    lodash.startsWith = startsWith;
	    lodash.subtract = subtract;
	    lodash.sum = sum;
	    lodash.sumBy = sumBy;
	    lodash.template = template;
	    lodash.times = times;
	    lodash.toFinite = toFinite;
	    lodash.toInteger = toInteger;
	    lodash.toLength = toLength;
	    lodash.toLower = toLower;
	    lodash.toNumber = toNumber;
	    lodash.toSafeInteger = toSafeInteger;
	    lodash.toString = toString;
	    lodash.toUpper = toUpper;
	    lodash.trim = trim;
	    lodash.trimEnd = trimEnd;
	    lodash.trimStart = trimStart;
	    lodash.truncate = truncate;
	    lodash.unescape = unescape;
	    lodash.uniqueId = uniqueId;
	    lodash.upperCase = upperCase;
	    lodash.upperFirst = upperFirst;

	    // Add aliases.
	    lodash.each = forEach;
	    lodash.eachRight = forEachRight;
	    lodash.first = head;

	    mixin(lodash, (function() {
	      var source = {};
	      baseForOwn(lodash, function(func, methodName) {
	        if (!hasOwnProperty.call(lodash.prototype, methodName)) {
	          source[methodName] = func;
	        }
	      });
	      return source;
	    }()), { 'chain': false });

	    /*------------------------------------------------------------------------*/

	    /**
	     * The semantic version number.
	     *
	     * @static
	     * @memberOf _
	     * @type {string}
	     */
	    lodash.VERSION = VERSION;

	    // Assign default placeholders.
	    arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function(methodName) {
	      lodash[methodName].placeholder = lodash;
	    });

	    // Add `LazyWrapper` methods for `_.drop` and `_.take` variants.
	    arrayEach(['drop', 'take'], function(methodName, index) {
	      LazyWrapper.prototype[methodName] = function(n) {
	        n = n === undefined$1 ? 1 : nativeMax(toInteger(n), 0);

	        var result = (this.__filtered__ && !index)
	          ? new LazyWrapper(this)
	          : this.clone();

	        if (result.__filtered__) {
	          result.__takeCount__ = nativeMin(n, result.__takeCount__);
	        } else {
	          result.__views__.push({
	            'size': nativeMin(n, MAX_ARRAY_LENGTH),
	            'type': methodName + (result.__dir__ < 0 ? 'Right' : '')
	          });
	        }
	        return result;
	      };

	      LazyWrapper.prototype[methodName + 'Right'] = function(n) {
	        return this.reverse()[methodName](n).reverse();
	      };
	    });

	    // Add `LazyWrapper` methods that accept an `iteratee` value.
	    arrayEach(['filter', 'map', 'takeWhile'], function(methodName, index) {
	      var type = index + 1,
	          isFilter = type == LAZY_FILTER_FLAG || type == LAZY_WHILE_FLAG;

	      LazyWrapper.prototype[methodName] = function(iteratee) {
	        var result = this.clone();
	        result.__iteratees__.push({
	          'iteratee': getIteratee(iteratee, 3),
	          'type': type
	        });
	        result.__filtered__ = result.__filtered__ || isFilter;
	        return result;
	      };
	    });

	    // Add `LazyWrapper` methods for `_.head` and `_.last`.
	    arrayEach(['head', 'last'], function(methodName, index) {
	      var takeName = 'take' + (index ? 'Right' : '');

	      LazyWrapper.prototype[methodName] = function() {
	        return this[takeName](1).value()[0];
	      };
	    });

	    // Add `LazyWrapper` methods for `_.initial` and `_.tail`.
	    arrayEach(['initial', 'tail'], function(methodName, index) {
	      var dropName = 'drop' + (index ? '' : 'Right');

	      LazyWrapper.prototype[methodName] = function() {
	        return this.__filtered__ ? new LazyWrapper(this) : this[dropName](1);
	      };
	    });

	    LazyWrapper.prototype.compact = function() {
	      return this.filter(identity);
	    };

	    LazyWrapper.prototype.find = function(predicate) {
	      return this.filter(predicate).head();
	    };

	    LazyWrapper.prototype.findLast = function(predicate) {
	      return this.reverse().find(predicate);
	    };

	    LazyWrapper.prototype.invokeMap = baseRest(function(path, args) {
	      if (typeof path == 'function') {
	        return new LazyWrapper(this);
	      }
	      return this.map(function(value) {
	        return baseInvoke(value, path, args);
	      });
	    });

	    LazyWrapper.prototype.reject = function(predicate) {
	      return this.filter(negate(getIteratee(predicate)));
	    };

	    LazyWrapper.prototype.slice = function(start, end) {
	      start = toInteger(start);

	      var result = this;
	      if (result.__filtered__ && (start > 0 || end < 0)) {
	        return new LazyWrapper(result);
	      }
	      if (start < 0) {
	        result = result.takeRight(-start);
	      } else if (start) {
	        result = result.drop(start);
	      }
	      if (end !== undefined$1) {
	        end = toInteger(end);
	        result = end < 0 ? result.dropRight(-end) : result.take(end - start);
	      }
	      return result;
	    };

	    LazyWrapper.prototype.takeRightWhile = function(predicate) {
	      return this.reverse().takeWhile(predicate).reverse();
	    };

	    LazyWrapper.prototype.toArray = function() {
	      return this.take(MAX_ARRAY_LENGTH);
	    };

	    // Add `LazyWrapper` methods to `lodash.prototype`.
	    baseForOwn(LazyWrapper.prototype, function(func, methodName) {
	      var checkIteratee = /^(?:filter|find|map|reject)|While$/.test(methodName),
	          isTaker = /^(?:head|last)$/.test(methodName),
	          lodashFunc = lodash[isTaker ? ('take' + (methodName == 'last' ? 'Right' : '')) : methodName],
	          retUnwrapped = isTaker || /^find/.test(methodName);

	      if (!lodashFunc) {
	        return;
	      }
	      lodash.prototype[methodName] = function() {
	        var value = this.__wrapped__,
	            args = isTaker ? [1] : arguments,
	            isLazy = value instanceof LazyWrapper,
	            iteratee = args[0],
	            useLazy = isLazy || isArray(value);

	        var interceptor = function(value) {
	          var result = lodashFunc.apply(lodash, arrayPush([value], args));
	          return (isTaker && chainAll) ? result[0] : result;
	        };

	        if (useLazy && checkIteratee && typeof iteratee == 'function' && iteratee.length != 1) {
	          // Avoid lazy use if the iteratee has a "length" value other than `1`.
	          isLazy = useLazy = false;
	        }
	        var chainAll = this.__chain__,
	            isHybrid = !!this.__actions__.length,
	            isUnwrapped = retUnwrapped && !chainAll,
	            onlyLazy = isLazy && !isHybrid;

	        if (!retUnwrapped && useLazy) {
	          value = onlyLazy ? value : new LazyWrapper(this);
	          var result = func.apply(value, args);
	          result.__actions__.push({ 'func': thru, 'args': [interceptor], 'thisArg': undefined$1 });
	          return new LodashWrapper(result, chainAll);
	        }
	        if (isUnwrapped && onlyLazy) {
	          return func.apply(this, args);
	        }
	        result = this.thru(interceptor);
	        return isUnwrapped ? (isTaker ? result.value()[0] : result.value()) : result;
	      };
	    });

	    // Add `Array` methods to `lodash.prototype`.
	    arrayEach(['pop', 'push', 'shift', 'sort', 'splice', 'unshift'], function(methodName) {
	      var func = arrayProto[methodName],
	          chainName = /^(?:push|sort|unshift)$/.test(methodName) ? 'tap' : 'thru',
	          retUnwrapped = /^(?:pop|shift)$/.test(methodName);

	      lodash.prototype[methodName] = function() {
	        var args = arguments;
	        if (retUnwrapped && !this.__chain__) {
	          var value = this.value();
	          return func.apply(isArray(value) ? value : [], args);
	        }
	        return this[chainName](function(value) {
	          return func.apply(isArray(value) ? value : [], args);
	        });
	      };
	    });

	    // Map minified method names to their real names.
	    baseForOwn(LazyWrapper.prototype, function(func, methodName) {
	      var lodashFunc = lodash[methodName];
	      if (lodashFunc) {
	        var key = (lodashFunc.name + ''),
	            names = realNames[key] || (realNames[key] = []);

	        names.push({ 'name': methodName, 'func': lodashFunc });
	      }
	    });

	    realNames[createHybrid(undefined$1, WRAP_BIND_KEY_FLAG).name] = [{
	      'name': 'wrapper',
	      'func': undefined$1
	    }];

	    // Add methods to `LazyWrapper`.
	    LazyWrapper.prototype.clone = lazyClone;
	    LazyWrapper.prototype.reverse = lazyReverse;
	    LazyWrapper.prototype.value = lazyValue;

	    // Add chain sequence methods to the `lodash` wrapper.
	    lodash.prototype.at = wrapperAt;
	    lodash.prototype.chain = wrapperChain;
	    lodash.prototype.commit = wrapperCommit;
	    lodash.prototype.next = wrapperNext;
	    lodash.prototype.plant = wrapperPlant;
	    lodash.prototype.reverse = wrapperReverse;
	    lodash.prototype.toJSON = lodash.prototype.valueOf = lodash.prototype.value = wrapperValue;

	    // Add lazy aliases.
	    lodash.prototype.first = lodash.prototype.head;

	    if (symIterator) {
	      lodash.prototype[symIterator] = wrapperToIterator;
	    }
	    return lodash;
	  });

	  /*--------------------------------------------------------------------------*/

	  // Export lodash.
	  var _ = runInContext();

	  // Some AMD build optimizers, like r.js, check for condition patterns like:
	  if (freeModule) {
	    // Export for Node.js.
	    (freeModule.exports = _)._ = _;
	    // Export for CommonJS support.
	    freeExports._ = _;
	  }
	  else {
	    // Export to the global object.
	    root._ = _;
	  }
	}.call(commonjsGlobal));
	});

	jQuery.fn.extend({
	  center: function center() {
	    this.css("position", "absolute");
	    this.css("top", ($(window).height() - this.height()) / 2 + $(window).scrollTop() + "px");
	    this.css("left", ($(window).width() - this.width()) / 2 + $(window).scrollLeft() + "px");
	    return this;
	  }
	});

	$.fn.extend({
	  isEmpty: function isEmpty(helperMsg) {
	    if ($.trim($(this).value).length == 0) {
	      alert(helperMsg);
	      $(this).focus(); // set the focus to this input

	      return false;
	    }

	    return true;
	  }
	});

	String.prototype.splitCSV = function (sep) {
	  for (var foo = this.split(sep = sep || ","), x = foo.length - 1, tl; x >= 0; x--) {
	    if (foo[x].replace(/"\s+$/, '"').charAt(foo[x].length - 1) == '"') {
	      if ((tl = foo[x].replace(/^\s+"/, '"')).length > 1 && tl.charAt(0) == '"') {
	        foo[x] = foo[x].replace(/^\s*"|"\s*$/g, '').replace(/""/g, '"');
	      } else if (x) {
	        foo.splice(x - 1, 2, [foo[x - 1], foo[x]].join(sep));
	      } else foo = foo.shift().split(sep).concat(foo);
	    } else foo[x].replace(/""/g, '"');
	  }

	  return foo;
	};

	/**
	 * Simple way to have remotely loaded modals withoud the need to have a perfect markup and replace everything.
	 */
	var BootstrapRemoteModal = function BootstrapRemoteModal(presetOptions, templateOptions) {
	  presetOptions = presetOptions || {};
	  templateOptions = templateOptions || {};

	  var options = {
	    parentElement: presetOptions.parentElement || 'body',
	    header: presetOptions.header || true,
	    footer: presetOptions.footer || true,
	    saveButton: presetOptions.saveButton || false,
	    closeIcon: presetOptions.closeIcon || true,
	    modalTitle: presetOptions.modalTitle || '',
	    remoteLink: presetOptions.remoteLink || "",
	    fnOnShow: presetOptions.fnOnShow || null,
	    fnOnShown: presetOptions.fnOnShown || null,
	    fnOnHide: presetOptions.fnOnHide || null,
	    fnOnHidden: presetOptions.fnOnHidden || null,
	    fnOnLoaded: presetOptions.fnOnLoaded || null,
	    removeOnClose: presetOptions.removeOnClose || false,
	    parseScriptsOnLoad: presetOptions.parseScriptsOnLoad || false,
	    blocking: presetOptions.blocking || false
	  };
	  var templateStrings = {
	    closeIcon: templateOptions.closeIcon || '<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>',
	    closeButton: templateOptions.closeButton || '<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>',
	    saveButton: templateOptions.saveButton || '<button type="button" class="btn btn-primary">Save changes</button>'
	  }; //Define all the blocks and combine them by jquery methods

	  var outerBlock = $('<div class="modal fade" tabindex="-1" role="dialog"></div>'),
	      innerBlock = $('<div class="modal-dialog" role="document"></div>'),
	      contentBlock = $('<div class="modal-content"></div>'),
	      headerBlock = $('<div class="modal-header"></div>'),
	      headlineBlock = $('<h4 class="modal-title"></h4>'),
	      bodyBlock = $('<div class="modal-body"></div>'),
	      footerBlock = $('<div class="modal-footer"></div>'),
	      closeIcon = $(templateOptions.closeIcon),
	      closeButton = $(templateOptions.closeButton),
	      saveButton = $(templateOptions.saveButton);
	  var modalObject = null;

	  var convertKebabCase = function convertKebabCase(string) {
	    return string.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase();
	  },
	      parseOptions = function parseOptions() {
	    var self = this;
	    $.each(options, function (key, option) {
	      options[key] = self.data(convertKebabCase(key)) || options[key];
	    });
	  },
	      bindEvents = function bindEvents() {
	    modalObject.on('show.bs.modal', function () {
	      loadRemote();
	    });
	    modalObject.on('shown.bs.modal', options.fnOnShown);
	    modalObject.on('hide.bs.modal', options.fnOnHide);
	    modalObject.on('hidden.bs.modal', function () {
	      if (options.removeOnClose === true) {
	        modalObject.find('.modal-body').html(" ");
	      }
	    });
	    modalObject.on('loaded.ls.remotemodal', options.fnOnLoaded);
	  },
	      loadRemote = function loadRemote() {
	    var modal_body = modalObject.find('.modal-body');
	    $.ajax({
	      url: options.remoteLink,
	      method: 'GET',
	      success: function success(resolve) {
	        modal_body.html(resolve);
	        modalObject.trigger('loaded.ls.remotemodal');
	      }
	    });
	  },
	      combineModal = function combineModal() {
	    var thisContent = contentBlock.clone();
	    thisContent.append(bodyBlock.clone());

	    if (options.header === true) {
	      var thisHeader = headerBlock.clone();
	      headlineBlock.text(options.modalTitle);
	      thisHeader.append(closeIcon.clone());
	      thisHeader.append(headlineBlock);
	      thisContent.prepend(thisHeader);
	    }

	    if (options.footer === true) {
	      var thisFooter = footerBlock.clone();
	      thisFooter.append(closeButton.clone());
	      if (options.saveButton === true) thisFooter.append(saveButton.clone());
	      thisContent.append(thisFooter);
	    }

	    modalObject = outerBlock.clone();
	    modalObject.append(innerBlock.clone().append(thisContent));
	  },
	      bindToElement = function bindToElement() {
	    this.on('click.remotemodal', function () {
	      modalObject.modal('toggle');
	    });
	  };

	  parseOptions.call(this);
	  combineModal();
	  modalObject.appendTo($(options.parentElement));
	  bindToElement.call(this);
	  bindEvents.call(this);
	};

	jQuery.fn.extend({
	  remoteModal: BootstrapRemoteModal
	});

	/**
	 * Methods and bindings for the question edit page
	 */
	var bindAdvancedAttribute = function bindAdvancedAttribute() {
	  if ($('#advancedquestionsettingswrapper').length > 0) {
	    window.questionFunctions = window.questionFunctions || new QuestionFunctions() || null;
	    window.questionFunctions.updatequestionattributes();
	  }

	  $('#showadvancedattributes').click(function () {
	    $('#showadvancedattributes').hide();
	    $('#hideadvancedattributes').show();
	    $('#advancedquestionsettingswrapper').animate({
	      "height": "toggle",
	      "opacity": "toggle"
	    });
	  });
	};

	/**
	 * Methods loaded on subquestions and answers page
	 */
	var subquestionAndAnswersGlobalMethods = {
	  removechars: function removechars(strtoconvert) {
	    return strtoconvert.replace(/[-a-zA-Z_]/g, "");
	  },
	  getUnique: function getUnique(array) {
	    return lodash.uniq(array);
	  }
	};

	/**
	 * Methods to load when a the surveygrid is available
	 *     if($('#survey-grid').length>0)
	 */
	var onExistBinding = function onExistBinding() {
	  $(document).on('click', '.has-link', function () {
	    var linkUrl = $(this).find('a').attr('href');
	    window.location.href = linkUrl;
	  });
	};

	/**
	 * Check the browsers console capabilities and bundle them into general functions
	 * If the build environment was "production" only put out error messages.
	 */
	var ConsoleShim =
	/*#__PURE__*/
	function () {
	  function ConsoleShim() {
	    var param = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '';
	    var silencer = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;

	    _classCallCheck(this, ConsoleShim);

	    this.param = param;
	    this.silencer = silencer;
	    this.collector = [];
	    this.currentGroupDescription = '';
	    this.activeGroups = 0;
	    this.timeHolder = null;
	    this.methods = ['group', 'groupEnd', 'log', 'trace', 'time', 'timeEnd', 'error', 'warn'];
	    this.silent = {
	      group: function group() {
	        return;
	      },
	      groupEnd: function groupEnd() {
	        return;
	      },
	      log: function log() {
	        return;
	      },
	      trace: function trace() {
	        return;
	      },
	      time: function time() {
	        return;
	      },
	      timeEnd: function timeEnd() {
	        return;
	      },
	      error: function error() {
	        return;
	      },
	      err: function err() {
	        return;
	      },
	      debug: function debug() {
	        return;
	      },
	      warn: function warn() {
	        return;
	      }
	    };
	  }

	  _createClass(ConsoleShim, [{
	    key: "_generateError",
	    value: function _generateError() {
	      try {
	        throw new Error();
	      } catch (err) {
	        return err;
	      }
	    }
	  }, {
	    key: "_insertParamToArguments",
	    value: function _insertParamToArguments(rawArgs) {
	      if (this.param !== '') {
	        var args = _toConsumableArray(rawArgs);

	        args.unshift(this.param);
	        return args;
	      }

	      return Array.from(arguments);
	    }
	  }, {
	    key: "setSilent",
	    value: function setSilent() {
	      var newValue = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null;
	      this.silencer = newValue || !this.silencer;
	    } //Start grouping logs

	  }, {
	    key: "group",
	    value: function group() {
	      if (this.silencer) {
	        return;
	      }

	      var args = this._insertParamToArguments(arguments);

	      if (typeof console.group === 'function') {
	        console.group.apply(console, args);
	        return;
	      }

	      var description = args[0] || 'GROUP';
	      this.currentGroupDescription = description;
	      this.activeGroups++;
	    } //Stop grouping logs

	  }, {
	    key: "groupEnd",
	    value: function groupEnd() {
	      if (this.silencer) {
	        return;
	      }

	      var args = this._insertParamToArguments(arguments);

	      if (typeof console.groupEnd === 'function') {
	        console.groupEnd.apply(console, args);
	        return;
	      }

	      this.currentGroupDescription = '';
	      this.activeGroups--;
	      this.activeGroups = this.activeGroups === 0 ? 0 : this.activeGroups--;
	    } //Simplest mechanism to log stuff
	    // Aware of the group shim

	  }, {
	    key: "log",
	    value: function log() {
	      if (this.silencer) {
	        return;
	      }

	      var args = this._insertParamToArguments(arguments);

	      if (typeof console.group === 'function') {
	        console.log.apply(console, args);
	        return;
	      }

	      args.shift();
	      args.unshift(' '.repeat(this.activeGroups * 2));
	      this.log.apply(this, args);
	    } //Trace back the apply.
	    //Uses either the inbuilt function console trace or opens a shim to trace by calling this._insertParamToArguments(arguments).callee

	  }, {
	    key: "trace",
	    value: function trace() {
	      if (this.silencer) {
	        return;
	      }

	      var args = this._insertParamToArguments(arguments);

	      if (typeof console.trace === 'function') {
	        console.trace.apply(console, args);
	        return;
	      }

	      var artificialError = this._generateError();

	      if (artificialError.stack) {
	        this.log.apply(console, artificialError.stack);
	        return;
	      }

	      this.log(args);

	      if (arguments.callee != undefined) {
	        this.trace.apply(console, arguments.callee);
	      }
	    }
	  }, {
	    key: "time",
	    value: function time() {
	      if (this.silencer) {
	        return;
	      }

	      var args = this._insertParamToArguments(arguments);

	      if (typeof console.time === 'function') {
	        console.time.apply(console, args);
	        return;
	      }

	      this.timeHolder = new Date();
	    }
	  }, {
	    key: "timeEnd",
	    value: function timeEnd() {
	      if (this.silencer) {
	        return;
	      }

	      var args = this._insertParamToArguments(arguments);

	      if (typeof console.timeEnd === 'function') {
	        console.timeEnd.apply(console, args);
	        return;
	      }

	      var diff = new Date() - this.timeHolder;
	      this.log("Took ".concat(Math.floor(diff / (1000 * 60 * 60)), " hours, ").concat(Math.floor(diff / (1000 * 60)), " minutes and ").concat(Math.floor(diff / 1000), " seconds ( ").concat(diff, " ms)"));
	      this.time = new Date();
	    }
	  }, {
	    key: "error",
	    value: function error() {
	      var args = this._insertParamToArguments(arguments);

	      if (typeof console.error === 'function') {
	        console.error.apply(console, args);
	        return;
	      }

	      this.log('--- ERROR ---');
	      this.log(args);
	    }
	  }, {
	    key: "warn",
	    value: function warn() {
	      var args = this._insertParamToArguments(arguments);

	      if (typeof console.warn === 'function') {
	        console.warn.apply(console, args);
	        return;
	      }

	      this.log('--- WARN ---');
	      this.log(args);
	    }
	  }]);

	  return ConsoleShim;
	}();

	var adminCoreLSConsole = new ConsoleShim('AdminCore', window.debugState ? window.debugState.backend : false); //!window.debugState.backend);

	/**
	 * Neccessary methods for the confirmation modal
	 */

	var ConfirmationModal = function ConfirmationModal(e) {
	  //////PREGENERATED VARIABLES
	  //Define the scope
	  var _this = this; //Set everything to null on default


	  var optionsDefault = {
	    onclick: null,
	    href: null,
	    message: null,
	    keepopen: null,
	    postDatas: null,
	    gridid: null,
	    "ajax-url": null
	  }; //////METHODS
	  //Parse available options from specific item.data settings, if not available load relatedTarget settings

	  var _parseOptions = function _parseOptions(e) {
	    return lodash.each(optionsDefault, function (value, key) {
	      optionsDefault[key] = $(_this).data(key) || $(e.relatedTarget).data(key) || optionsDefault[key];
	    });
	  },
	      //Generate a simple link on the ok button
	  _basicLink = function _basicLink() {
	    adminCoreLSConsole.log('Binding basicLink in notification panel');
	    $(_this).find('.btn-ok').attr('href', options.href);
	  },
	      //Evaluate a function on ok button click
	  _onClickFunction = function _onClickFunction() {
	    adminCoreLSConsole.log('Binding onClick-functions in notification panel');
	    var onclick_fn = eval(options.onclick);

	    if (typeof onclick_fn == 'function') {
	      $(_this).find('.btn-ok').off('click');
	      $(_this).find('.btn-ok').on('click', function (ev) {
	        if (!options.keepopen) {
	          $('#confirmation-modal').modal('hide');
	        }

	        onclick_fn();
	      });
	      return;
	    }

	    adminCoreLSConsole.error("Confirmation modal: onclick is not a function. Wrap data-onclick content in (function() { ... }).");
	    return;
	  },
	      //Set up an ajax call and regenerate a gridView on ok button click
	  _ajaxHandler = function _ajaxHandler() {
	    adminCoreLSConsole.log('Binding ajax handler in notification panel');
	    $(_this).find('.btn-ok').on('click', function (ev) {
	      $.ajax({
	        type: "POST",
	        url: options['ajax-url'],
	        data: options.postDatas,
	        success: function success(html, statut) {
	          $.fn.yiiGridView.update(options.gridid); // Update the surveys list

	          $('#confirmation-modal').modal('hide');
	        },
	        error: function error(html, statut) {
	          $('#confirmation-modal .modal-body-text').append(html.responseText);
	        }
	      });
	    });
	  },
	      _setTarget = function _setTarget() {
	    //Set up normal href
	    if (!!options.href) {
	      _basicLink();

	      return;
	    } //Set up a complete function


	    if (!!options.onclick) {
	      _onClickFunction();

	      return;
	    } //Set up an ajax post


	    if (!!options['ajax-url']) {
	      _ajaxHandler();

	      return;
	    }

	    adminCoreLSConsole.error("Confirmation modal: Found neither data-href or data-onclick, nor ajax data.");
	  }; //////RUN BINDINGS
	  //Current options object


	  var options = _parseOptions(e); //Set the message if available


	  $(this).find('.modal-body-text').html(options.message); //Run setTarget to determine loading target

	  _setTarget();
	};

	var loadMethods = function loadMethods() {
	  adminCoreLSConsole.log('ConfirmationModal calling');
	  $('#confirmation-modal').on('show.bs.modal', function (e) {
	    ConfirmationModal.call(this, e);
	  });
	};

	/**
	 * Define global setters for LimeSurvey
	 * Also bootstrapping methods and window bound methods are set here
	 */
	var globalWindowMethods = {
	  renderBootstrapSwitch: function renderBootstrapSwitch() {
	    try {
	      if (!$('[data-is-bootstrap-switch]').parent().hasClass('bootstrap-switch-container')) {
	        $('[data-is-bootstrap-switch]').bootstrapSwitch({
	          onInit: function onInit() {
	            return adminCoreLSConsole.log("BootstrapSwitch Initialized");
	          }
	        });
	      }
	    } catch (e) {
	      adminCoreLSConsole.error(e);
	    }
	  },
	  unrenderBootstrapSwitch: function unrenderBootstrapSwitch() {
	    try {
	      $('[data-is-bootstrap-switch]').bootstrapSwitch('destroy');
	    } catch (e) {
	      adminCoreLSConsole.error(e);
	    }
	  },
	  validatefilename: function validatefilename(form, strmessage) {
	    if (form.the_file.value == "") {
	      $('#pleaseselectfile-popup').modal();
	      form.the_file.focus();
	      return false;
	    }

	    return true;
	  },
	  doToolTip: function doToolTip() {
	    try {
	      $(".btntooltip").tooltip("destroy");
	    } catch (e) {}

	    try {
	      $('[data-tooltip="true"]').tooltip("destroy");
	    } catch (e) {}

	    try {
	      $('[data-tooltip="true"]').tooltip("destroy");
	    } catch (e) {}

	    $(".btntooltip").tooltip();
	    $('[data-tooltip="true"]').tooltip();
	    $('[data-toggle="tooltip"]').tooltip();
	  },
	  // finds any duplicate array elements using the fewest possible comparison
	  arrHasDupes: function arrHasDupes(arrayToCheck) {
	    return _.uniq(arrayToCheck).length !== arrayToCheck.length;
	  },
	  arrHasDupesWhich: function arrHasDupesWhich(arrayToCheck) {
	    return _.difference(_.uniq(arrayToCheck), arrayToCheck).length > 0;
	  },
	  getkey: function getkey(e) {
	    return window.event ? window.event.keyCode : e ? e.which : null;
	  },
	  goodchars: function goodchars(e, goods) {
	    var key = getkey(e);
	    if (key == null) return true; // get character

	    var keychar = String.fromCharCode(key).toLowerCase();
	    goods = goods.toLowerCase();
	    return goods.indexOf(keychar) != -1 || key == null || key == 0 || key == 8 || key == 9 || key == 27;
	  },
	  tableCellAdapters: function tableCellAdapters() {
	    $('table.activecell').on("click", ['tbody td input:checkbox', 'tbody td input:radio', 'tbody td label', 'tbody th input:checkbox', 'tbody th input:radio', 'tbody th label'].join(', '), function (e) {
	      e.stopPropagation();
	    });
	    $('table.activecell').on("click", 'tbody td, tbody th', function () {
	      if ($(this).find("input:radio,input:checkbox").length == 1) {
	        $(this).find("input:radio").click();
	        $(this).find("input:radio").triggerHandler("click");
	        $(this).find("input:checkbox").click();
	        $(this).find("input:checkbox").triggerHandler("click");
	      }
	    });
	  },
	  sendPost: function sendPost(url, content, contentObject) {
	    contentObject = contentObject || {};
	    var $form = $("<form method='POST'>").attr("action", url);

	    if (typeof content == 'string' && content != '') {
	      try {
	        contentObject = _.merge(contentObject, JSON.parse(content));
	      } catch (e) {
	        console.error('JSON parse on sendPost failed!');
	      }
	    }

	    _.each(contentObject, function (value, key) {
	      $("<input type='hidden'>").attr("name", key).attr("value", value).appendTo($form);
	    });

	    $("<input type='hidden'>").attr("name", LS.data.csrfTokenName).attr("value", LS.data.csrfToken).appendTo($form);
	    $form.appendTo("body");
	    $form.submit();
	  },
	  addHiddenElement: function addHiddenElement(form, name, value) {
	    $('<input type="hidden"/>').attr('name', name).attr('value', value).appendTo($(form));
	  },
	  fixAccordionPosition: function fixAccordionPosition() {
	    $('#accordion').on('shown.bs.collapse', ".panel-collapse.collapse", function (e) {
	      if (e.target != this) return;
	      $('#accordion').find('.panel-collapse.collapse').not('#' + $(this).attr('id')).collapse('hide');
	    });
	  }
	};
	var globalStartUpMethods = {
	  bootstrapping: function bootstrapping() {
	    $('button,input[type=submit],input[type=button],input[type=reset],.button').button();
	    $('button,input[type=submit],input[type=button],input[type=reset],.button').addClass("limebutton");
	    $(".progressbar").each(function () {
	      var pValue = parseInt($(this).attr('name'));
	      $(this).progressbar({
	        value: pValue
	      });

	      if (pValue > 85) {
	        $("div", $(this)).css({
	          'background': 'Red'
	        });
	      }

	      $("div", this).html(pValue + "%");
	    });
	    globalWindowMethods.tableCellAdapters();
	  }
	};

	/**
	 * A method to use the implemented notifier, via ajax or javascript
	 *
	 * @param text string  | The text to be displayed
	 * @param classes string | The classes that will be put onto the inner container
	 * @param styles object | An object of css-attributes that will be put onto the inner container
	 * @param customOptions | possible options are:
	 *                         useHtml (boolean) -> use the @text as html
	 *                         timeout (int) -> the timeout in milliseconds until the notifier will fade/slide out
	 *                         inAnimation (string) -> The jQuery animation to call for the notifier [fadeIn||slideDown]
	 *                         outAnimation (string) -> The jQuery animation to remove the notifier [fadeOut||slideUp]
	 *                         animationTime (int) -> The time in milliseconds the animation will last
	 */
	window.LS = window.LS || {};

	var NotifyFader =
	/*#__PURE__*/
	function () {
	  function NotifyFader() {
	    _classCallCheck(this, NotifyFader);

	    this.count = 0;
	  }

	  _createClass(NotifyFader, [{
	    key: "increment",
	    value: function increment() {
	      this.count = this.count + 1;
	    }
	  }, {
	    key: "decrement",
	    value: function decrement() {
	      this.count = this.count - 1;
	    }
	  }, {
	    key: "getCount",
	    value: function getCount() {
	      return this.count;
	    }
	  }, {
	    key: "create",
	    value: function create(text, classes, styles, customOptions) {
	      var _this = this;

	      this.increment();
	      customOptions = customOptions || {};
	      styles = styles || {};
	      classes = classes || "well well-lg";
	      var options = {
	        useHtml: customOptions.useHtml || true,
	        timeout: customOptions.timeout || 3500,
	        inAnimation: customOptions.inAnimation || "slideDown",
	        outAnimation: customOptions.outAnimation || "slideUp",
	        animationTime: customOptions.animationTime || 450
	      };
	      var container = $("<div> </div>");
	      var newID = "notif-container_" + this.getCount();
	      container.addClass(classes);
	      container.css(styles);

	      if (options.useHtml) {
	        container.html(text);
	      } else {
	        container.text(text);
	      }

	      $('#notif-container').clone().attr('id', newID).css({
	        display: 'none',
	        top: 8 * this.getCount() + "%",
	        position: 'fixed',
	        left: "15%",
	        width: "70%",
	        'z-index': 3500
	      }).appendTo($('#notif-container').parent()).html(container); // using the option inAnimation as funtion of jquery

	      $('#' + newID)[options.inAnimation](options.animationTime, function () {
	        var remove = function remove() {
	          $('#' + newID)[options.outAnimation](options.animationTime, function () {
	            $('#' + newID).remove();

	            _this.decrement();
	          });
	        };

	        $(_this).on('click', remove);

	        if (options.timeout) {
	          setTimeout(remove, options.timeout);
	        }
	      });
	    }
	  }]);

	  return NotifyFader;
	}();
	window.LS.LsGlobalNotifier = window.LS.LsGlobalNotifier || new NotifyFader();
	function notifyFader (text, classes, styles, customOptions) {
	  window.LS.LsGlobalNotifier.create(text, classes, styles, customOptions);
	}

	/**
	 * Collection of ajax helper
	 */

	var onSuccess$1 = function onSuccess(response) {
	  // Check type of response and take action accordingly
	  if (response == '') {
	    console.error('No response from server');
	    notifyFader.create('No response from server', 'alert-danger');
	    return false;
	  }

	  if (!response.loggedIn) {
	    // Hide any modals that might be open
	    $('.modal').modal('hide');
	    $('#ajax-helper-modal .modal-content').html(response.html);
	    $('#ajax-helper-modal').modal('show');
	    return false;
	  } // No permission


	  if (!response.hasPermission) {
	    notifyFader(response.noPermissionText, 'well-lg bg-danger text-center');
	    return false;
	  } // Error popup


	  if (response.error) {
	    notifyFader(response.error.message, 'well-lg bg-danger text-center');
	    return false;
	  } // Put HTML into element.


	  if (response.outputType == 'jsonoutputhtml') {
	    $('#' + response.target).html(response.html);
	    globalWindowMethods.doToolTip();
	    return;
	  } // Success popup


	  if (response.success) {
	    notifyFader(response.success, 'well-lg bg-primary text-center');
	  } // Modal popup


	  if (response.html) {
	    $('#ajax-helper-modal .modal-content').html(response.html);
	    $('#ajax-helper-modal').modal('show');
	  }

	  return true;
	};
	/**
	* Like $.ajax, but with checks for errors,
	* permission etc. Should be used together
	* with the PHP AjaxHelper.
	* @todo Handle error from server (500)?
	* @param {object} options - Exactly the same as $.ajax options
	* @return {object} ajax promise
	*/


	var ajax = function ajax(options) {
	  var oldSuccess = options.success;
	  var oldError = options.error;

	  options.success = function (response, textStatus, jqXHR) {
	    $('#ls-loading').hide(); // User-supplied success is always run EXCEPT when login fails

	    var runOldSuccess = onSuccess$1(response);

	    if (oldSuccess && runOldSuccess) {
	      oldSuccess(response, textStatus, jqXHR);
	    }
	  };

	  options.error = function (jqXHR, textStatus, errorThrown) {
	    $('#ls-loading').hide();
	    console.error('AJAX CALL FAILED -> ', {
	      errorThrown: errorThrown,
	      textStatus: textStatus,
	      jqXHR: jqXHR
	    });

	    if (oldError) {
	      oldError(jqXHR, textStatus, errorThrown);
	    }
	  };

	  $('#ls-loading').show();
	  return $.ajax(options);
	};

	var AjaxHelper = /*#__PURE__*/Object.freeze({
		ajax: ajax,
		onSuccess: onSuccess$1
	});

	function createUrl (route) {
	  var params = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
	  var result = LS.data.baseUrl;

	  if (result.indexOf('/', result.length - 1) === -1) {
	    result = result + '/';
	  }

	  if (LS.data.showScriptName) {
	    result = result + 'index.php';
	  }

	  if (LS.data.urlFormat == 'get') {
	    // Configure route.
	    result += '?r=' + route; // Configure params.

	    for (var key in params) {
	      result = result + '&' + key + '=' + params[key];
	    }
	  } else {
	    if (LS.data.showScriptName) {
	      result = result + '/';
	    } // Configure route.


	    result += route; // Configure params.

	    for (var _key in params) {
	      result = result + '/' + _key + '/' + params[_key];
	    }
	  }

	  return result;
	}

	/**
	 * A specialized version of `_.forEach` for arrays without support for
	 * iteratee shorthands.
	 *
	 * @private
	 * @param {Array} [array] The array to iterate over.
	 * @param {Function} iteratee The function invoked per iteration.
	 * @returns {Array} Returns `array`.
	 */
	function arrayEach(array, iteratee) {
	  var index = -1,
	      length = array == null ? 0 : array.length;

	  while (++index < length) {
	    if (iteratee(array[index], index, array) === false) {
	      break;
	    }
	  }
	  return array;
	}

	var _arrayEach = arrayEach;

	/**
	 * Creates a base function for methods like `_.forIn` and `_.forOwn`.
	 *
	 * @private
	 * @param {boolean} [fromRight] Specify iterating from right to left.
	 * @returns {Function} Returns the new base function.
	 */
	function createBaseFor(fromRight) {
	  return function(object, iteratee, keysFunc) {
	    var index = -1,
	        iterable = Object(object),
	        props = keysFunc(object),
	        length = props.length;

	    while (length--) {
	      var key = props[fromRight ? length : ++index];
	      if (iteratee(iterable[key], key, iterable) === false) {
	        break;
	      }
	    }
	    return object;
	  };
	}

	var _createBaseFor = createBaseFor;

	/**
	 * The base implementation of `baseForOwn` which iterates over `object`
	 * properties returned by `keysFunc` and invokes `iteratee` for each property.
	 * Iteratee functions may exit iteration early by explicitly returning `false`.
	 *
	 * @private
	 * @param {Object} object The object to iterate over.
	 * @param {Function} iteratee The function invoked per iteration.
	 * @param {Function} keysFunc The function to get the keys of `object`.
	 * @returns {Object} Returns `object`.
	 */
	var baseFor = _createBaseFor();

	var _baseFor = baseFor;

	/**
	 * The base implementation of `_.times` without support for iteratee shorthands
	 * or max array length checks.
	 *
	 * @private
	 * @param {number} n The number of times to invoke `iteratee`.
	 * @param {Function} iteratee The function invoked per iteration.
	 * @returns {Array} Returns the array of results.
	 */
	function baseTimes(n, iteratee) {
	  var index = -1,
	      result = Array(n);

	  while (++index < n) {
	    result[index] = iteratee(index);
	  }
	  return result;
	}

	var _baseTimes = baseTimes;

	/** Detect free variable `global` from Node.js. */
	var freeGlobal = typeof commonjsGlobal == 'object' && commonjsGlobal && commonjsGlobal.Object === Object && commonjsGlobal;

	var _freeGlobal = freeGlobal;

	/** Detect free variable `self`. */
	var freeSelf = typeof self == 'object' && self && self.Object === Object && self;

	/** Used as a reference to the global object. */
	var root$1 = _freeGlobal || freeSelf || Function('return this')();

	var _root = root$1;

	/** Built-in value references. */
	var Symbol$2 = _root.Symbol;

	var _Symbol = Symbol$2;

	/** Used for built-in method references. */
	var objectProto = Object.prototype;

	/** Used to check objects for own properties. */
	var hasOwnProperty$1 = objectProto.hasOwnProperty;

	/**
	 * Used to resolve the
	 * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
	 * of values.
	 */
	var nativeObjectToString = objectProto.toString;

	/** Built-in value references. */
	var symToStringTag = _Symbol ? _Symbol.toStringTag : undefined;

	/**
	 * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.
	 *
	 * @private
	 * @param {*} value The value to query.
	 * @returns {string} Returns the raw `toStringTag`.
	 */
	function getRawTag(value) {
	  var isOwn = hasOwnProperty$1.call(value, symToStringTag),
	      tag = value[symToStringTag];

	  try {
	    value[symToStringTag] = undefined;
	    var unmasked = true;
	  } catch (e) {}

	  var result = nativeObjectToString.call(value);
	  if (unmasked) {
	    if (isOwn) {
	      value[symToStringTag] = tag;
	    } else {
	      delete value[symToStringTag];
	    }
	  }
	  return result;
	}

	var _getRawTag = getRawTag;

	/** Used for built-in method references. */
	var objectProto$1 = Object.prototype;

	/**
	 * Used to resolve the
	 * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
	 * of values.
	 */
	var nativeObjectToString$1 = objectProto$1.toString;

	/**
	 * Converts `value` to a string using `Object.prototype.toString`.
	 *
	 * @private
	 * @param {*} value The value to convert.
	 * @returns {string} Returns the converted string.
	 */
	function objectToString$1(value) {
	  return nativeObjectToString$1.call(value);
	}

	var _objectToString = objectToString$1;

	/** `Object#toString` result references. */
	var nullTag = '[object Null]',
	    undefinedTag = '[object Undefined]';

	/** Built-in value references. */
	var symToStringTag$1 = _Symbol ? _Symbol.toStringTag : undefined;

	/**
	 * The base implementation of `getTag` without fallbacks for buggy environments.
	 *
	 * @private
	 * @param {*} value The value to query.
	 * @returns {string} Returns the `toStringTag`.
	 */
	function baseGetTag(value) {
	  if (value == null) {
	    return value === undefined ? undefinedTag : nullTag;
	  }
	  return (symToStringTag$1 && symToStringTag$1 in Object(value))
	    ? _getRawTag(value)
	    : _objectToString(value);
	}

	var _baseGetTag = baseGetTag;

	/**
	 * Checks if `value` is object-like. A value is object-like if it's not `null`
	 * and has a `typeof` result of "object".
	 *
	 * @static
	 * @memberOf _
	 * @since 4.0.0
	 * @category Lang
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
	 * @example
	 *
	 * _.isObjectLike({});
	 * // => true
	 *
	 * _.isObjectLike([1, 2, 3]);
	 * // => true
	 *
	 * _.isObjectLike(_.noop);
	 * // => false
	 *
	 * _.isObjectLike(null);
	 * // => false
	 */
	function isObjectLike(value) {
	  return value != null && typeof value == 'object';
	}

	var isObjectLike_1 = isObjectLike;

	/** `Object#toString` result references. */
	var argsTag = '[object Arguments]';

	/**
	 * The base implementation of `_.isArguments`.
	 *
	 * @private
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is an `arguments` object,
	 */
	function baseIsArguments(value) {
	  return isObjectLike_1(value) && _baseGetTag(value) == argsTag;
	}

	var _baseIsArguments = baseIsArguments;

	/** Used for built-in method references. */
	var objectProto$2 = Object.prototype;

	/** Used to check objects for own properties. */
	var hasOwnProperty$2 = objectProto$2.hasOwnProperty;

	/** Built-in value references. */
	var propertyIsEnumerable$1 = objectProto$2.propertyIsEnumerable;

	/**
	 * Checks if `value` is likely an `arguments` object.
	 *
	 * @static
	 * @memberOf _
	 * @since 0.1.0
	 * @category Lang
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is an `arguments` object,
	 *  else `false`.
	 * @example
	 *
	 * _.isArguments(function() { return arguments; }());
	 * // => true
	 *
	 * _.isArguments([1, 2, 3]);
	 * // => false
	 */
	var isArguments = _baseIsArguments(function() { return arguments; }()) ? _baseIsArguments : function(value) {
	  return isObjectLike_1(value) && hasOwnProperty$2.call(value, 'callee') &&
	    !propertyIsEnumerable$1.call(value, 'callee');
	};

	var isArguments_1 = isArguments;

	/**
	 * Checks if `value` is classified as an `Array` object.
	 *
	 * @static
	 * @memberOf _
	 * @since 0.1.0
	 * @category Lang
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is an array, else `false`.
	 * @example
	 *
	 * _.isArray([1, 2, 3]);
	 * // => true
	 *
	 * _.isArray(document.body.children);
	 * // => false
	 *
	 * _.isArray('abc');
	 * // => false
	 *
	 * _.isArray(_.noop);
	 * // => false
	 */
	var isArray$1 = Array.isArray;

	var isArray_1 = isArray$1;

	/**
	 * This method returns `false`.
	 *
	 * @static
	 * @memberOf _
	 * @since 4.13.0
	 * @category Util
	 * @returns {boolean} Returns `false`.
	 * @example
	 *
	 * _.times(2, _.stubFalse);
	 * // => [false, false]
	 */
	function stubFalse() {
	  return false;
	}

	var stubFalse_1 = stubFalse;

	var isBuffer_1 = createCommonjsModule(function (module, exports) {
	/** Detect free variable `exports`. */
	var freeExports = exports && !exports.nodeType && exports;

	/** Detect free variable `module`. */
	var freeModule = freeExports && 'object' == 'object' && module && !module.nodeType && module;

	/** Detect the popular CommonJS extension `module.exports`. */
	var moduleExports = freeModule && freeModule.exports === freeExports;

	/** Built-in value references. */
	var Buffer = moduleExports ? _root.Buffer : undefined;

	/* Built-in method references for those with the same name as other `lodash` methods. */
	var nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined;

	/**
	 * Checks if `value` is a buffer.
	 *
	 * @static
	 * @memberOf _
	 * @since 4.3.0
	 * @category Lang
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.
	 * @example
	 *
	 * _.isBuffer(new Buffer(2));
	 * // => true
	 *
	 * _.isBuffer(new Uint8Array(2));
	 * // => false
	 */
	var isBuffer = nativeIsBuffer || stubFalse_1;

	module.exports = isBuffer;
	});

	/** Used as references for various `Number` constants. */
	var MAX_SAFE_INTEGER$2 = 9007199254740991;

	/** Used to detect unsigned integer values. */
	var reIsUint = /^(?:0|[1-9]\d*)$/;

	/**
	 * Checks if `value` is a valid array-like index.
	 *
	 * @private
	 * @param {*} value The value to check.
	 * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
	 * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
	 */
	function isIndex(value, length) {
	  var type = typeof value;
	  length = length == null ? MAX_SAFE_INTEGER$2 : length;

	  return !!length &&
	    (type == 'number' ||
	      (type != 'symbol' && reIsUint.test(value))) &&
	        (value > -1 && value % 1 == 0 && value < length);
	}

	var _isIndex = isIndex;

	/** Used as references for various `Number` constants. */
	var MAX_SAFE_INTEGER$3 = 9007199254740991;

	/**
	 * Checks if `value` is a valid array-like length.
	 *
	 * **Note:** This method is loosely based on
	 * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
	 *
	 * @static
	 * @memberOf _
	 * @since 4.0.0
	 * @category Lang
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
	 * @example
	 *
	 * _.isLength(3);
	 * // => true
	 *
	 * _.isLength(Number.MIN_VALUE);
	 * // => false
	 *
	 * _.isLength(Infinity);
	 * // => false
	 *
	 * _.isLength('3');
	 * // => false
	 */
	function isLength(value) {
	  return typeof value == 'number' &&
	    value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER$3;
	}

	var isLength_1 = isLength;

	/** `Object#toString` result references. */
	var argsTag$1 = '[object Arguments]',
	    arrayTag = '[object Array]',
	    boolTag = '[object Boolean]',
	    dateTag = '[object Date]',
	    errorTag = '[object Error]',
	    funcTag = '[object Function]',
	    mapTag = '[object Map]',
	    numberTag = '[object Number]',
	    objectTag = '[object Object]',
	    regexpTag = '[object RegExp]',
	    setTag = '[object Set]',
	    stringTag = '[object String]',
	    weakMapTag = '[object WeakMap]';

	var arrayBufferTag = '[object ArrayBuffer]',
	    dataViewTag = '[object DataView]',
	    float32Tag = '[object Float32Array]',
	    float64Tag = '[object Float64Array]',
	    int8Tag = '[object Int8Array]',
	    int16Tag = '[object Int16Array]',
	    int32Tag = '[object Int32Array]',
	    uint8Tag = '[object Uint8Array]',
	    uint8ClampedTag = '[object Uint8ClampedArray]',
	    uint16Tag = '[object Uint16Array]',
	    uint32Tag = '[object Uint32Array]';

	/** Used to identify `toStringTag` values of typed arrays. */
	var typedArrayTags = {};
	typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =
	typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =
	typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =
	typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =
	typedArrayTags[uint32Tag] = true;
	typedArrayTags[argsTag$1] = typedArrayTags[arrayTag] =
	typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =
	typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =
	typedArrayTags[errorTag] = typedArrayTags[funcTag] =
	typedArrayTags[mapTag] = typedArrayTags[numberTag] =
	typedArrayTags[objectTag] = typedArrayTags[regexpTag] =
	typedArrayTags[setTag] = typedArrayTags[stringTag] =
	typedArrayTags[weakMapTag] = false;

	/**
	 * The base implementation of `_.isTypedArray` without Node.js optimizations.
	 *
	 * @private
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
	 */
	function baseIsTypedArray(value) {
	  return isObjectLike_1(value) &&
	    isLength_1(value.length) && !!typedArrayTags[_baseGetTag(value)];
	}

	var _baseIsTypedArray = baseIsTypedArray;

	/**
	 * The base implementation of `_.unary` without support for storing metadata.
	 *
	 * @private
	 * @param {Function} func The function to cap arguments for.
	 * @returns {Function} Returns the new capped function.
	 */
	function baseUnary(func) {
	  return function(value) {
	    return func(value);
	  };
	}

	var _baseUnary = baseUnary;

	var _nodeUtil = createCommonjsModule(function (module, exports) {
	/** Detect free variable `exports`. */
	var freeExports = exports && !exports.nodeType && exports;

	/** Detect free variable `module`. */
	var freeModule = freeExports && 'object' == 'object' && module && !module.nodeType && module;

	/** Detect the popular CommonJS extension `module.exports`. */
	var moduleExports = freeModule && freeModule.exports === freeExports;

	/** Detect free variable `process` from Node.js. */
	var freeProcess = moduleExports && _freeGlobal.process;

	/** Used to access faster Node.js helpers. */
	var nodeUtil = (function() {
	  try {
	    // Use `util.types` for Node.js 10+.
	    var types = freeModule && freeModule.require && freeModule.require('util').types;

	    if (types) {
	      return types;
	    }

	    // Legacy `process.binding('util')` for Node.js < 10.
	    return freeProcess && freeProcess.binding && freeProcess.binding('util');
	  } catch (e) {}
	}());

	module.exports = nodeUtil;
	});

	/* Node.js helper references. */
	var nodeIsTypedArray = _nodeUtil && _nodeUtil.isTypedArray;

	/**
	 * Checks if `value` is classified as a typed array.
	 *
	 * @static
	 * @memberOf _
	 * @since 3.0.0
	 * @category Lang
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
	 * @example
	 *
	 * _.isTypedArray(new Uint8Array);
	 * // => true
	 *
	 * _.isTypedArray([]);
	 * // => false
	 */
	var isTypedArray$1 = nodeIsTypedArray ? _baseUnary(nodeIsTypedArray) : _baseIsTypedArray;

	var isTypedArray_1 = isTypedArray$1;

	/** Used for built-in method references. */
	var objectProto$3 = Object.prototype;

	/** Used to check objects for own properties. */
	var hasOwnProperty$3 = objectProto$3.hasOwnProperty;

	/**
	 * Creates an array of the enumerable property names of the array-like `value`.
	 *
	 * @private
	 * @param {*} value The value to query.
	 * @param {boolean} inherited Specify returning inherited property names.
	 * @returns {Array} Returns the array of property names.
	 */
	function arrayLikeKeys(value, inherited) {
	  var isArr = isArray_1(value),
	      isArg = !isArr && isArguments_1(value),
	      isBuff = !isArr && !isArg && isBuffer_1(value),
	      isType = !isArr && !isArg && !isBuff && isTypedArray_1(value),
	      skipIndexes = isArr || isArg || isBuff || isType,
	      result = skipIndexes ? _baseTimes(value.length, String) : [],
	      length = result.length;

	  for (var key in value) {
	    if ((inherited || hasOwnProperty$3.call(value, key)) &&
	        !(skipIndexes && (
	           // Safari 9 has enumerable `arguments.length` in strict mode.
	           key == 'length' ||
	           // Node.js 0.10 has enumerable non-index properties on buffers.
	           (isBuff && (key == 'offset' || key == 'parent')) ||
	           // PhantomJS 2 has enumerable non-index properties on typed arrays.
	           (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||
	           // Skip index properties.
	           _isIndex(key, length)
	        ))) {
	      result.push(key);
	    }
	  }
	  return result;
	}

	var _arrayLikeKeys = arrayLikeKeys;

	/** Used for built-in method references. */
	var objectProto$4 = Object.prototype;

	/**
	 * Checks if `value` is likely a prototype object.
	 *
	 * @private
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.
	 */
	function isPrototype(value) {
	  var Ctor = value && value.constructor,
	      proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto$4;

	  return value === proto;
	}

	var _isPrototype = isPrototype;

	/**
	 * Creates a unary function that invokes `func` with its argument transformed.
	 *
	 * @private
	 * @param {Function} func The function to wrap.
	 * @param {Function} transform The argument transform.
	 * @returns {Function} Returns the new function.
	 */
	function overArg(func, transform) {
	  return function(arg) {
	    return func(transform(arg));
	  };
	}

	var _overArg = overArg;

	/* Built-in method references for those with the same name as other `lodash` methods. */
	var nativeKeys = _overArg(Object.keys, Object);

	var _nativeKeys = nativeKeys;

	/** Used for built-in method references. */
	var objectProto$5 = Object.prototype;

	/** Used to check objects for own properties. */
	var hasOwnProperty$4 = objectProto$5.hasOwnProperty;

	/**
	 * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.
	 *
	 * @private
	 * @param {Object} object The object to query.
	 * @returns {Array} Returns the array of property names.
	 */
	function baseKeys(object) {
	  if (!_isPrototype(object)) {
	    return _nativeKeys(object);
	  }
	  var result = [];
	  for (var key in Object(object)) {
	    if (hasOwnProperty$4.call(object, key) && key != 'constructor') {
	      result.push(key);
	    }
	  }
	  return result;
	}

	var _baseKeys = baseKeys;

	/**
	 * Checks if `value` is the
	 * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
	 * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
	 *
	 * @static
	 * @memberOf _
	 * @since 0.1.0
	 * @category Lang
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is an object, else `false`.
	 * @example
	 *
	 * _.isObject({});
	 * // => true
	 *
	 * _.isObject([1, 2, 3]);
	 * // => true
	 *
	 * _.isObject(_.noop);
	 * // => true
	 *
	 * _.isObject(null);
	 * // => false
	 */
	function isObject$1(value) {
	  var type = typeof value;
	  return value != null && (type == 'object' || type == 'function');
	}

	var isObject_1 = isObject$1;

	/** `Object#toString` result references. */
	var asyncTag = '[object AsyncFunction]',
	    funcTag$1 = '[object Function]',
	    genTag = '[object GeneratorFunction]',
	    proxyTag = '[object Proxy]';

	/**
	 * Checks if `value` is classified as a `Function` object.
	 *
	 * @static
	 * @memberOf _
	 * @since 0.1.0
	 * @category Lang
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is a function, else `false`.
	 * @example
	 *
	 * _.isFunction(_);
	 * // => true
	 *
	 * _.isFunction(/abc/);
	 * // => false
	 */
	function isFunction(value) {
	  if (!isObject_1(value)) {
	    return false;
	  }
	  // The use of `Object#toString` avoids issues with the `typeof` operator
	  // in Safari 9 which returns 'object' for typed arrays and other constructors.
	  var tag = _baseGetTag(value);
	  return tag == funcTag$1 || tag == genTag || tag == asyncTag || tag == proxyTag;
	}

	var isFunction_1 = isFunction;

	/**
	 * Checks if `value` is array-like. A value is considered array-like if it's
	 * not a function and has a `value.length` that's an integer greater than or
	 * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
	 *
	 * @static
	 * @memberOf _
	 * @since 4.0.0
	 * @category Lang
	 * @param {*} value The value to check.
	 * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
	 * @example
	 *
	 * _.isArrayLike([1, 2, 3]);
	 * // => true
	 *
	 * _.isArrayLike(document.body.children);
	 * // => true
	 *
	 * _.isArrayLike('abc');
	 * // => true
	 *
	 * _.isArrayLike(_.noop);
	 * // => false
	 */
	function isArrayLike(value) {
	  return value != null && isLength_1(value.length) && !isFunction_1(value);
	}

	var isArrayLike_1 = isArrayLike;

	/**
	 * Creates an array of the own enumerable property names of `object`.
	 *
	 * **Note:** Non-object values are coerced to objects. See the
	 * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
	 * for more details.
	 *
	 * @static
	 * @since 0.1.0
	 * @memberOf _
	 * @category Object
	 * @param {Object} object The object to query.
	 * @returns {Array} Returns the array of property names.
	 * @example
	 *
	 * function Foo() {
	 *   this.a = 1;
	 *   this.b = 2;
	 * }
	 *
	 * Foo.prototype.c = 3;
	 *
	 * _.keys(new Foo);
	 * // => ['a', 'b'] (iteration order is not guaranteed)
	 *
	 * _.keys('hi');
	 * // => ['0', '1']
	 */
	function keys$3(object) {
	  return isArrayLike_1(object) ? _arrayLikeKeys(object) : _baseKeys(object);
	}

	var keys_1 = keys$3;

	/**
	 * The base implementation of `_.forOwn` without support for iteratee shorthands.
	 *
	 * @private
	 * @param {Object} object The object to iterate over.
	 * @param {Function} iteratee The function invoked per iteration.
	 * @returns {Object} Returns `object`.
	 */
	function baseForOwn(object, iteratee) {
	  return object && _baseFor(object, iteratee, keys_1);
	}

	var _baseForOwn = baseForOwn;

	/**
	 * Creates a `baseEach` or `baseEachRight` function.
	 *
	 * @private
	 * @param {Function} eachFunc The function to iterate over a collection.
	 * @param {boolean} [fromRight] Specify iterating from right to left.
	 * @returns {Function} Returns the new base function.
	 */
	function createBaseEach(eachFunc, fromRight) {
	  return function(collection, iteratee) {
	    if (collection == null) {
	      return collection;
	    }
	    if (!isArrayLike_1(collection)) {
	      return eachFunc(collection, iteratee);
	    }
	    var length = collection.length,
	        index = fromRight ? length : -1,
	        iterable = Object(collection);

	    while ((fromRight ? index-- : ++index < length)) {
	      if (iteratee(iterable[index], index, iterable) === false) {
	        break;
	      }
	    }
	    return collection;
	  };
	}

	var _createBaseEach = createBaseEach;

	/**
	 * The base implementation of `_.forEach` without support for iteratee shorthands.
	 *
	 * @private
	 * @param {Array|Object} collection The collection to iterate over.
	 * @param {Function} iteratee The function invoked per iteration.
	 * @returns {Array|Object} Returns `collection`.
	 */
	var baseEach = _createBaseEach(_baseForOwn);

	var _baseEach = baseEach;

	/**
	 * This method returns the first argument it receives.
	 *
	 * @static
	 * @since 0.1.0
	 * @memberOf _
	 * @category Util
	 * @param {*} value Any value.
	 * @returns {*} Returns `value`.
	 * @example
	 *
	 * var object = { 'a': 1 };
	 *
	 * console.log(_.identity(object) === object);
	 * // => true
	 */
	function identity(value) {
	  return value;
	}

	var identity_1 = identity;

	/**
	 * Casts `value` to `identity` if it's not a function.
	 *
	 * @private
	 * @param {*} value The value to inspect.
	 * @returns {Function} Returns cast function.
	 */
	function castFunction(value) {
	  return typeof value == 'function' ? value : identity_1;
	}

	var _castFunction = castFunction;

	/**
	 * Iterates over elements of `collection` and invokes `iteratee` for each element.
	 * The iteratee is invoked with three arguments: (value, index|key, collection).
	 * Iteratee functions may exit iteration early by explicitly returning `false`.
	 *
	 * **Note:** As with other "Collections" methods, objects with a "length"
	 * property are iterated like arrays. To avoid this behavior use `_.forIn`
	 * or `_.forOwn` for object iteration.
	 *
	 * @static
	 * @memberOf _
	 * @since 0.1.0
	 * @alias each
	 * @category Collection
	 * @param {Array|Object} collection The collection to iterate over.
	 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
	 * @returns {Array|Object} Returns `collection`.
	 * @see _.forEachRight
	 * @example
	 *
	 * _.forEach([1, 2], function(value) {
	 *   console.log(value);
	 * });
	 * // => Logs `1` then `2`.
	 *
	 * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {
	 *   console.log(key);
	 * });
	 * // => Logs 'a' then 'b' (iteration order is not guaranteed).
	 */
	function forEach(collection, iteratee) {
	  var func = isArray_1(collection) ? _arrayEach : _baseEach;
	  return func(collection, _castFunction(iteratee));
	}

	var forEach_1 = forEach;

	var SaveController = function SaveController() {

	  var closeAfterSaveInput = $("<input>").attr("type", "hidden").attr("name", "close-after-save");
	  /**
	   * Helper function for save buttons onclick event
	   *
	   * @param {object} that - this from calling method
	   * @return {object} jQuery DOM form object
	   */

	  var getForm = function getForm(that) {
	    var form;

	    if ($(that).attr('data-use-form-id') == 1) {
	      formId = '#' + $(that).attr('data-form-to-save');
	      form = [$(formId)];
	    } else {
	      form = $('#pjax-content').find('form');
	    }

	    if (form.length < 1) throw "No form Found this can't be!";
	    return form;
	  },
	      displayLoadingState = function displayLoadingState(el) {
	    var loadingSpinner = '<i class="fa fa-cog fa-spin lsLoadingStateIndicator"></i>';
	    $(el).prop('disabled', true).append(loadingSpinner);
	  },
	      stopDisplayLoadingState = function stopDisplayLoadingState() {
	    adminCoreLSConsole.log('StopLoadingIconAnimation');
	    $('.lsLoadingStateIndicator').each(function (i, item) {
	      $(item).parent().prop('disabled', false);
	      $(item).remove();
	    });
	    LS.EventBus.$emit('loadingFinished');
	  },
	      //###########PRIVATE
	  checks = function checks() {
	    return {
	      _checkExportButton: {
	        check: '[data-submit-form]',
	        run: function run(ev) {
	          ev.preventDefault();
	          var $form = getForm(this);

	          try {
	            for (var instanceName in CKEDITOR.instances) {
	              CKEDITOR.instances[instanceName].updateElement();
	            }
	          } catch (e) {
	            console.ls.log('Seems no CKEDITOR4 is loaded');
	          }

	          $form.find('[type="submit"]').first().trigger('click');
	        },
	        on: 'click'
	      },
	      _checkSaveButton: {
	        check: '#save-button',
	        run: function run(ev) {
	          ev.preventDefault();
	          var $form = getForm(this);

	          try {
	            for (var instanceName in CKEDITOR.instances) {
	              CKEDITOR.instances[instanceName].updateElement();
	            }
	          } catch (e) {
	            console.ls.log('Seems no CKEDITOR4 is loaded');
	          }

	          displayLoadingState(this);
	          $form.find('[type="submit"]').first().trigger('click');
	        },
	        on: 'click'
	      },
	      _checkSaveFormButton: {
	        check: '#save-form-button',
	        run: function run(ev) {
	          ev.preventDefault();
	          var formid = '#' + $(this).attr('data-form-id'),
	              $form = $(formid); //alert($form.find('[type="submit"]').attr('id'));

	          displayLoadingState(this);
	          $form.find('[type="submit"]').trigger('click');
	          return false;
	        },
	        on: 'click'
	      },
	      _checkSaveAndNewButton: {
	        check: '#save-and-new-button',
	        run: function run(ev) {
	          ev.preventDefault();
	          var $form = getForm(this);
	          $form.append('<input name="saveandnew" value="' + $('#save-and-new-button').attr('href') + '" />');

	          try {
	            for (var instanceName in CKEDITOR.instances) {
	              CKEDITOR.instances[instanceName].updateElement();
	            }
	          } catch (e) {
	            console.ls.log('Seems no CKEDITOR4 is loaded');
	          }

	          displayLoadingState(this);
	          $form.find('[type="submit"]').first().trigger('click');
	        },
	        on: 'click'
	      },
	      _checkSaveAndCloseButton: {
	        check: '#save-and-close-button',
	        run: function run(ev) {
	          ev.preventDefault();
	          var $form = getForm(this);
	          closeAfterSaveInput.val("true");
	          $form.append(closeAfterSaveInput);
	          displayLoadingState(this);
	          $form.find('[type="submit"]').first().trigger('click');
	        },
	        on: 'click'
	      },
	      _checkSaveAndCloseFormButton: {
	        check: '#save-and-close-form-button',
	        run: function run(ev) {
	          ev.preventDefault();
	          var formid = '#' + $(this).attr('data-form-id'),
	              $form = $(formid); // Add input to tell us to not redirect
	          // TODO : change that

	          $('<input type="hidden">').attr({
	            name: 'saveandclose',
	            value: '1'
	          }).appendTo($form);
	          displayLoadingState(this);
	          $form.find('[type="submit"]').trigger('click');
	          return false;
	        },
	        on: 'click'
	      },
	      _checkSaveAndNewQuestionButton: {
	        check: '#save-and-new-question-button',
	        run: function run(ev) {
	          ev.preventDefault();
	          var $form = getForm(this);
	          $form.append('<input name="saveandnewquestion" value="' + $('#save-and-new-question-button').attr('href') + '" />');

	          try {
	            for (var instanceName in CKEDITOR.instances) {
	              CKEDITOR.instances[instanceName].updateElement();
	            }
	          } catch (e) {
	            console.ls.log('Seems no CKEDITOR4 is loaded');
	          }

	          displayLoadingState(this);
	          $form.find('[type="submit"]').first().trigger('click');
	        },
	        on: 'click'
	      },
	      _checkOpenPreview: {
	        check: '.open-preview',
	        run: function run(ev) {
	          var frameSrc = $(this).attr("aria-data-url");
	          $('#frame-question-preview').attr('src', frameSrc);
	          $('#question-preview').modal('show');
	        },
	        on: 'click'
	      },
	      _checkStopLoading: {
	        check: '#in_survey_common',
	        run: function run(ev) {
	          stopDisplayLoadingState();
	        },
	        on: 'lsStopLoading'
	      }
	    };
	  }; //############PUBLIC


	  return function () {
	    forEach_1(checks(), function (checkItem) {
	      var item = checkItem.check;
	      $(document).off(checkItem.on + '.centralsave', item);
	      adminCoreLSConsole.log('saveBindings', checkItem, $(item));

	      if ($(item).length > 0) {
	        $(document).on(checkItem.on + '.centralsave', item, checkItem.run);
	        adminCoreLSConsole.log($(item), 'on', checkItem.on, 'run', checkItem.run);
	      }
	    });
	  };
	};

	var saveController = SaveController();

	var $GET = {};
	forEach_1(window.location.search.substring(1).split('&'), function (value, index) {
	  try {
	    var keyValueArray = value.split("=");
	    $GET[keyValueArray[0]] = keyValueArray[1];
	  } catch (e) {}
	});
	var key$1 = null;
	var keyValuePairs = {};
	window.location.href.substring(window.location.href.indexOf('admin') - 1).split('/').forEach(function (value, index) {
	  if (value == 'sa') {
	    key$1 = false;
	  }

	  if (key$1 !== null) {
	    if (key$1 === false) {
	      key$1 = value;
	    } else {
	      keyValuePairs[key$1] = value;
	      key$1 = false;
	    }
	  }
	});
	var parameterGlobals = {
	  parameters: {
	    $GET: $GET,
	    keyValuePairs: keyValuePairs
	  }
	};

	var activateSubSubMenues = function activateSubSubMenues() {
	  $('ul.dropdown-menu [data-toggle=dropdown]').on('click', function (event) {
	    event.preventDefault();
	    event.stopPropagation();
	    $(this).parent().siblings().removeClass('open');
	    $(this).parent().toggleClass('open');
	  });
	};

	var ConfirmDeleteModal = function ConfirmDeleteModal(options) {
	  var $item = $(this);

	  options.fnOnShown = options.fnOnShown || function () {};

	  options.fnOnHide = options.fnOnHide || function () {};

	  options.removeOnClose = options.removeOnClose || function () {};

	  options.fnOnHidden = options.fnOnHidden || function () {};

	  options.fnOnLoaded = options.fnOnLoaded || function () {};

	  var postUrl = options.postUrl || $item.attr('href'),
	      confirmText = options.confirmText || $item.data('text') || '',
	      confirmTitle = options.confirmTitle || $item.attr('title') || '',
	      postObject = options.postObject || $item.data('post'),
	      showTextArea = options.showTextArea || $item.data('show-text-area') || '',
	      useAjax = options.useAjax || $item.data('use-ajax') || '',
	      keepopen = options.keepopen || $item.data('keepopen') || '',
	      gridReload = options.gridReload || $item.data('grid-reload') || '',
	      gridid = options.gridid || $item.data('grid-id') || '',
	      buttonNo = options.buttonNo || $item.data('button-no') || '<i class="fa fa-times"></i>',
	      buttonYes = options.buttonYes || $item.data('button-yes') || '<i class="fa fa-check"></i>',
	      parentElement = options.parentElement || $item.data('parent-element') || 'body';
	  var closeIconHTML = '<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>',
	      closeButtonHTML = '<button type="button" class="btn btn-default" data-dismiss="modal">' + buttonNo + '</button>',
	      confirmButtonHTML = '<button type="button" class="btn btn-primary selector--button-confirm">' + buttonYes + '</button>'; //Define all the blocks and combine them by jquery methods

	  var outerBlock = $('<div class="modal fade" tabindex="-1" role="dialog"></div>'),
	      innerBlock = $('<div class="modal-dialog" role="document"></div>'),
	      contentBlock = $('<div class="modal-content"></div>'),
	      headerBlock = $('<div class="modal-header"></div>'),
	      headlineBlock = $('<h4 class="modal-title"></h4>'),
	      bodyBlock = $('<div class="modal-body"></div>'),
	      footerBlock = $('<div class="modal-footer"></div>'),
	      closeIcon = $(closeIconHTML),
	      closeButton = $(closeButtonHTML),
	      confirmButton = $(confirmButtonHTML);
	  var modalObject = null;

	  var combineModal = function combineModal() {
	    var thisContent = contentBlock.clone();
	    thisContent.append(bodyBlock.clone());

	    if (confirmTitle !== '') {
	      var thisHeader = headerBlock.clone();
	      headlineBlock.text(confirmTitle);
	      thisHeader.append(closeIcon.clone());
	      thisHeader.append(headlineBlock);
	      thisContent.prepend(thisHeader);
	    }

	    var thisFooter = footerBlock.clone();
	    thisFooter.append(closeButton.clone());
	    thisFooter.append(confirmButton.clone());
	    thisContent.append(thisFooter);
	    modalObject = outerBlock.clone();
	    modalObject.append(innerBlock.clone().append(thisContent));
	  },
	      addForm = function addForm() {
	    var formObject = $('<form name="' + Math.round(Math.random() * 1000) + '_' + confirmTitle.replace(/[^a-bA-B0-9]/g, '') + '" method="post" action="' + postUrl + '"></form>');

	    for (var key in postObject) {
	      var type = 'hidden',
	          value = postObject[key],
	          htmlClass = '';

	      if (_typeof(postObject[key]) == 'object') {
	        type = postObject[key].type;
	        value = postObject[key].value;
	        htmlClass = postObject[key].class;
	      }

	      formObject.append('<input name="' + key + '" value="' + value + '" type="' + type + '" ' + (htmlClass ? 'class="' + htmlClass + '"' : '') + ' />');
	    }

	    formObject.append('<input name="' + LS.data.csrfTokenName + '" value="' + LS.data.csrfToken + '" type="hidden" />');
	    modalObject.find('.modal-body').append(formObject);
	    modalObject.find('.modal-body').append('<p>' + confirmText + '</p>');

	    if (showTextArea !== '') {
	      modalObject.find('form').append('<textarea id="modalTextArea" name="modalTextArea" ></textarea>');
	    }
	  },
	      runAjaxRequest = function runAjaxRequest() {
	    return LS.ajax({
	      url: postUrl,
	      type: 'POST',
	      data: modalObject.find('form').serialize(),
	      // html contains the buttons
	      success: function success(html, statut) {
	        if (keepopen != 'true') {
	          modalObject.modal('hide'); // $modal.modal('hide');
	        } else {
	          modalObject.find('.modal-body').empty().html(html); // Inject the returned HTML in the modal body
	        } // Reload grid


	        if (gridReload) {
	          $('#' + gridid).yiiGridView('update'); // Update the surveys list

	          setTimeout(function () {
	            $(document).trigger("actions-updated");
	          }, 500); // Raise an event if some widgets inside the modals need some refresh (eg: position widget in question list)
	        }

	        if (html.ajaxHelper) {
	          LS.AjaxHelper.onSuccess(html);
	          return;
	        }

	        if (onSuccess) {
	          var func = new Function(onSuccess);
	          func(html);
	          return;
	        }
	      },
	      error: function error(html, statut) {
	        modalObject.find('.modal-body').empty().html(html.responseText);
	        console.ls.log(html);
	      }
	    });
	  },
	      bindEvents = function bindEvents() {
	    modalObject.on('show.bs.modal', function () {
	      addForm();

	      try {
	        options.fnOnShow;
	      } catch (e) {}
	    });
	    modalObject.on('shown.bs.modal', function () {
	      modalObject.find('.selector--button-confirm').on('click', function (e) {
	        e.preventDefault();

	        if (!useAjax) {
	          modalObject.find('form').trigger('submit');
	          modalObject.modal('close');
	        } else {
	          // Ajax request
	          runAjaxRequest();
	        }
	      });
	      options.fnOnShown.call(this);
	    });
	    modalObject.on('hide.bs.modal', options.fnOnHide);
	    modalObject.on('hidden.bs.modal', function () {
	      if (options.removeOnClose === true) {
	        modalObject.find('.modal-body').html(" ");
	      }

	      try {
	        options.fnOnHidden;
	      } catch (e) {}
	    });
	    modalObject.on('loaded.ls.remotemodal', options.fnOnLoaded);
	  },
	      bindToElement = function bindToElement() {
	    $item.on('click.confirmmodal', function () {
	      modalObject.modal('toggle');
	    });
	  },
	      runPrepare = function runPrepare() {
	    if ($item.data('confirm-modal-appended') == 'yes') {
	      return;
	    }

	    combineModal();
	    modalObject.appendTo($(parentElement));
	    bindToElement.call(this);
	    bindEvents.call(this);
	    $item.data('confirm-modal-appended', 'yes');
	  };

	  runPrepare();
	};

	jQuery.fn.extend({
	  confirmModal: ConfirmDeleteModal
	});
	function confirmDeletemodal() {
	  $(document).off('click.confirmModalSelector', 'a.selector--ConfirmModal');
	  $(document).on('click.confirmModalSelector', 'a.selector--ConfirmModal', function (e) {
	    e.preventDefault();
	    $(this).confirmModal({});
	    $(this).trigger('click.confirmmodal');
	  });
	}

	/**
	 * Panel Clickable
	 * Like in front page, or quick actions
	 */
	function panelClickable() {
	  $(".panel-clickable").on('click', function (e) {
	    var self = $(this);

	    if (self.data('url') != '') {
	      if (self.data('target') === '_blank') {
	        window.open(self.data('url'));
	      } else {
	        window.location.href = self.data('url');
	      }
	    }
	  });
	}

	/**
	 * Welcome page panels animations
	 */
	function panelsAnimation() {
	  setTimeout(function () {
	    adminCoreLSConsole.log('Triggering panel animation');
	    /**
	     * Panel shown one by one
	     */

	    $('.panel').each(function (i) {
	      $(this).delay(i++ * 200).animate({
	        opacity: 1,
	        top: '0px'
	      }, 200);
	    });
	    /**
	     * Rotate last survey/question
	     */

	    function rotateLast() {
	      var $rotateShown = $('.rotateShown');
	      var $rotateHidden = $('.rotateHidden');
	      $rotateShown.hide('slide', {
	        direction: 'left',
	        easing: 'easeInOutQuint'
	      }, 500, function () {
	        $rotateHidden.show('slide', {
	          direction: 'right',
	          easing: 'easeInOutQuint'
	        }, 1000);
	      });
	      $rotateShown.removeClass('rotateShown').addClass('rotateHidden');
	      $rotateHidden.removeClass('rotateHidden').addClass('rotateShown');
	      window.setTimeout(rotateLast, 5000);
	    }

	    if ($("#last_question").length) {
	      $('.rotateHidden').hide();
	      window.setTimeout(rotateLast, 2000);
	    }
	  }, 350);
	}

	/**
	 * Notifcation system for admin
	 *
	 * @since 2017-08-02
	 * @author Olle Haerstedt, Markus Flür
	 */

	var NotifcationSystem = function NotifcationSystem() {
	  var
	  /**
	   * Load widget HTML and inject it
	   * @param {string} URL to call
	   * @return
	   */
	  __updateNotificationWidget = function __updateNotificationWidget(updateUrl) {
	    adminCoreLSConsole.log('updateNotificationWidget'); // Update notification widget

	    return $.ajax({
	      url: updateUrl,
	      method: 'GET',
	      success: function success(response) {
	        $('#notification-li').replaceWith(response); // Re-bind onclick

	        initNotification(); // Adapt style to window size

	        styleNotificationMenu();
	      }
	    });
	  },

	  /**
	   * Tell system that notification is read
	   * @param {object} that The notification link
	   * @return
	   */
	  __notificationIsRead = function __notificationIsRead(that) {
	    adminCoreLSConsole.log('notificationIsRead');
	    $.ajax({
	      url: $(that).data('read-url'),
	      method: 'GET'
	    }).done(function (response) {
	      // Fetch new HTML for menu widget
	      __updateNotificationWidget($(that).data('update-url'));
	    });
	  },

	  /**
	   * Fetch notification as JSON and show modal
	   * @param {object} that The notification link
	   * @param {url} URL to fetch notification as JSON
	   * @return
	   */
	  __showNotificationModal = function __showNotificationModal(that, url) {
	    adminCoreLSConsole.log('showNotificationModal');
	    $.ajax({
	      url: url,
	      method: 'GET'
	    }).done(function (response) {
	      var not = response.result;
	      $('#admin-notification-modal .modal-title').html(not.title);
	      $('#admin-notification-modal .modal-body-text').html(not.message);
	      $('#admin-notification-modal .modal-content').addClass('panel-' + not.display_class);
	      $('#admin-notification-modal .notification-date').html(not.created.substr(0, 16));
	      $('#admin-notification-modal').modal(); // TODO: Will this work in message includes a link that is clicked?

	      $('#admin-notification-modal').off('hidden.bs.modal');
	      $('#admin-notification-modal').on('hidden.bs.modal', function (e) {
	        __notificationIsRead(that);

	        $('#admin-notification-modal .modal-content').removeClass('panel-' + not.display_class);
	      });
	    });
	  },

	  /*##########PUBLIC##########*/

	  /**
	   * Bind onclick and stuff
	   * @return
	   */
	  initNotification = function initNotification() {
	    // const self = this;
	    $('.admin-notification-link').each(function (nr, that) {
	      adminCoreLSConsole.log('Number of Notification: ', nr);
	      var url = $(that).data('url');
	      var importance = $(that).data('importance');
	      var status = $(that).data('status'); // Important notifications are shown as pop-up on load

	      if (importance == 3 && status == 'new') {
	        __showNotificationModal(that, url);

	        adminCoreLSConsole.log('stoploop');
	        return false; // Stop loop
	      } // Bind click to notification in drop-down


	      $(that).off('click.showNotification');
	      $(that).on('click.showNotification', function () {
	        __showNotificationModal(that, url);
	      });
	    });
	  },

	  /**
	   * Called from outside (update notifications when click
	   * @param {string} url
	   * @param {boolean} openAfter If notification widget should be opened after load; default to true
	   * @return
	   */
	  updateNotificationWidget = function updateNotificationWidget(url, openAfter) {
	    // Make sure menu is open after load
	    __updateNotificationWidget(url).then(function () {
	      if (openAfter !== false) {
	        $('#notification-li').addClass('open');
	      }
	    }); // Only update once


	    $('#notification-li').off('click.showNotification');
	  },

	  /**
	   * Apply styling
	   * @return
	   */
	  styleNotificationMenu = function styleNotificationMenu() {
	    adminCoreLSConsole.log('styleNotificationMenu');
	    var height = window.innerHeight - 70;
	    $('#notification-outer-ul').css('height', height + 'px');
	    $('#notification-inner-ul').css('height', height - 60 + 'px');
	    $('#notification-inner-li').css('height', height - 60 + 'px');
	  },
	      deleteAllNotifications = function deleteAllNotifications(url, updateUrl) {
	    return $.ajax({
	      url: url,
	      method: 'GET',
	      success: function success(response) {
	        adminCoreLSConsole.log('response', response);
	      }
	    }).then(function () {
	      updateNotificationWidget(updateUrl);
	    });
	  };

	  return {
	    initNotification: initNotification,
	    updateNotificationWidget: updateNotificationWidget,
	    styleNotificationMenu: styleNotificationMenu,
	    deleteAllNotifications: deleteAllNotifications
	  };
	}; //########################################################################


	var notificationSystem = new NotifcationSystem();

	var gridButton = {
	  noGridAction: function noGridAction(event, that) {
	    event.preventDefault();
	  },
	  confirmGridAction: function confirmGridAction(event, that) {
	    event.preventDefault();
	    var actionUrl = $(that).attr('href');

	    if (!actionUrl) {
	      LOG.error("confirmGridAction without valid element");
	      return;
	    }

	    var text = $(that).data('confirm-text') || $(that).attr('title') || $(that).data('original-title');
	    var utf8 = $(that).data('confirm-utf8') || LS.lang.confirm;
	    var gridid = $(that).data('gridid') || $(that).closest(".grid-view").attr("id");
	    $.bsconfirm(text, utf8, function onClickOK() {
	      $('#' + gridid).yiiGridView('update', {
	        type: 'POST',
	        url: actionUrl,
	        success: function success(data) {
	          jQuery('#' + gridid).yiiGridView('update');
	          $('#identity__bsconfirmModal').modal('hide'); // todo : show an success alert box
	        },
	        error: function error(request, status, _error) {
	          $('#identity__bsconfirmModal').modal('hide');
	          alert(request.responseText); // Use a better alert box (see todo success)
	        }
	      });
	    });
	  },
	  postGridAction: function postGridAction(event, that) {
	    event.preventDefault();
	    var parts = $(that).attr('href').split("#");
	    var actionUrl = parts[0];

	    if (!actionUrl) {
	      LOG.error("postGridAction without valid element");
	      return;
	    }

	    var postAction = '';

	    if (parts.length > 1) {
	      postAction = parts[1];
	    }

	    window.LS.sendPost(actionUrl, postAction);
	  }
	};
	var gridAction = {
	  gridButton: gridButton
	};

	/*!
	 * Vue.js v2.6.10
	 * (c) 2014-2019 Evan You
	 * Released under the MIT License.
	 */
	/*  */

	var emptyObject = Object.freeze({});

	// These helpers produce better VM code in JS engines due to their
	// explicitness and function inlining.
	function isUndef (v) {
	  return v === undefined || v === null
	}

	function isDef (v) {
	  return v !== undefined && v !== null
	}

	function isTrue (v) {
	  return v === true
	}

	function isFalse (v) {
	  return v === false
	}

	/**
	 * Check if value is primitive.
	 */
	function isPrimitive (value) {
	  return (
	    typeof value === 'string' ||
	    typeof value === 'number' ||
	    // $flow-disable-line
	    typeof value === 'symbol' ||
	    typeof value === 'boolean'
	  )
	}

	/**
	 * Quick object check - this is primarily used to tell
	 * Objects from primitive values when we know the value
	 * is a JSON-compliant type.
	 */
	function isObject$2 (obj) {
	  return obj !== null && typeof obj === 'object'
	}

	/**
	 * Get the raw type string of a value, e.g., [object Object].
	 */
	var _toString = Object.prototype.toString;

	function toRawType (value) {
	  return _toString.call(value).slice(8, -1)
	}

	/**
	 * Strict object type check. Only returns true
	 * for plain JavaScript objects.
	 */
	function isPlainObject (obj) {
	  return _toString.call(obj) === '[object Object]'
	}

	function isRegExp (v) {
	  return _toString.call(v) === '[object RegExp]'
	}

	/**
	 * Check if val is a valid array index.
	 */
	function isValidArrayIndex (val) {
	  var n = parseFloat(String(val));
	  return n >= 0 && Math.floor(n) === n && isFinite(val)
	}

	function isPromise (val) {
	  return (
	    isDef(val) &&
	    typeof val.then === 'function' &&
	    typeof val.catch === 'function'
	  )
	}

	/**
	 * Convert a value to a string that is actually rendered.
	 */
	function toString$2 (val) {
	  return val == null
	    ? ''
	    : Array.isArray(val) || (isPlainObject(val) && val.toString === _toString)
	      ? JSON.stringify(val, null, 2)
	      : String(val)
	}

	/**
	 * Convert an input value to a number for persistence.
	 * If the conversion fails, return original string.
	 */
	function toNumber$1 (val) {
	  var n = parseFloat(val);
	  return isNaN(n) ? val : n
	}

	/**
	 * Make a map and return a function for checking if a key
	 * is in that map.
	 */
	function makeMap (
	  str,
	  expectsLowerCase
	) {
	  var map = Object.create(null);
	  var list = str.split(',');
	  for (var i = 0; i < list.length; i++) {
	    map[list[i]] = true;
	  }
	  return expectsLowerCase
	    ? function (val) { return map[val.toLowerCase()]; }
	    : function (val) { return map[val]; }
	}

	/**
	 * Check if a tag is a built-in tag.
	 */
	var isBuiltInTag = makeMap('slot,component', true);

	/**
	 * Check if an attribute is a reserved attribute.
	 */
	var isReservedAttribute = makeMap('key,ref,slot,slot-scope,is');

	/**
	 * Remove an item from an array.
	 */
	function remove (arr, item) {
	  if (arr.length) {
	    var index = arr.indexOf(item);
	    if (index > -1) {
	      return arr.splice(index, 1)
	    }
	  }
	}

	/**
	 * Check whether an object has the property.
	 */
	var hasOwnProperty$5 = Object.prototype.hasOwnProperty;
	function hasOwn (obj, key) {
	  return hasOwnProperty$5.call(obj, key)
	}

	/**
	 * Create a cached version of a pure function.
	 */
	function cached (fn) {
	  var cache = Object.create(null);
	  return (function cachedFn (str) {
	    var hit = cache[str];
	    return hit || (cache[str] = fn(str))
	  })
	}

	/**
	 * Camelize a hyphen-delimited string.
	 */
	var camelizeRE = /-(\w)/g;
	var camelize = cached(function (str) {
	  return str.replace(camelizeRE, function (_, c) { return c ? c.toUpperCase() : ''; })
	});

	/**
	 * Capitalize a string.
	 */
	var capitalize = cached(function (str) {
	  return str.charAt(0).toUpperCase() + str.slice(1)
	});

	/**
	 * Hyphenate a camelCase string.
	 */
	var hyphenateRE = /\B([A-Z])/g;
	var hyphenate = cached(function (str) {
	  return str.replace(hyphenateRE, '-$1').toLowerCase()
	});

	/**
	 * Simple bind polyfill for environments that do not support it,
	 * e.g., PhantomJS 1.x. Technically, we don't need this anymore
	 * since native bind is now performant enough in most browsers.
	 * But removing it would mean breaking code that was able to run in
	 * PhantomJS 1.x, so this must be kept for backward compatibility.
	 */

	/* istanbul ignore next */
	function polyfillBind (fn, ctx) {
	  function boundFn (a) {
	    var l = arguments.length;
	    return l
	      ? l > 1
	        ? fn.apply(ctx, arguments)
	        : fn.call(ctx, a)
	      : fn.call(ctx)
	  }

	  boundFn._length = fn.length;
	  return boundFn
	}

	function nativeBind (fn, ctx) {
	  return fn.bind(ctx)
	}

	var bind$1 = Function.prototype.bind
	  ? nativeBind
	  : polyfillBind;

	/**
	 * Convert an Array-like object to a real Array.
	 */
	function toArray (list, start) {
	  start = start || 0;
	  var i = list.length - start;
	  var ret = new Array(i);
	  while (i--) {
	    ret[i] = list[i + start];
	  }
	  return ret
	}

	/**
	 * Mix properties into target object.
	 */
	function extend (to, _from) {
	  for (var key in _from) {
	    to[key] = _from[key];
	  }
	  return to
	}

	/**
	 * Merge an Array of Objects into a single Object.
	 */
	function toObject$1 (arr) {
	  var res = {};
	  for (var i = 0; i < arr.length; i++) {
	    if (arr[i]) {
	      extend(res, arr[i]);
	    }
	  }
	  return res
	}

	/* eslint-disable no-unused-vars */

	/**
	 * Perform no operation.
	 * Stubbing args to make Flow happy without leaving useless transpiled code
	 * with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/).
	 */
	function noop (a, b, c) {}

	/**
	 * Always return false.
	 */
	var no = function (a, b, c) { return false; };

	/* eslint-enable no-unused-vars */

	/**
	 * Return the same value.
	 */
	var identity$1 = function (_) { return _; };

	/**
	 * Check if two values are loosely equal - that is,
	 * if they are plain objects, do they have the same shape?
	 */
	function looseEqual (a, b) {
	  if (a === b) { return true }
	  var isObjectA = isObject$2(a);
	  var isObjectB = isObject$2(b);
	  if (isObjectA && isObjectB) {
	    try {
	      var isArrayA = Array.isArray(a);
	      var isArrayB = Array.isArray(b);
	      if (isArrayA && isArrayB) {
	        return a.length === b.length && a.every(function (e, i) {
	          return looseEqual(e, b[i])
	        })
	      } else if (a instanceof Date && b instanceof Date) {
	        return a.getTime() === b.getTime()
	      } else if (!isArrayA && !isArrayB) {
	        var keysA = Object.keys(a);
	        var keysB = Object.keys(b);
	        return keysA.length === keysB.length && keysA.every(function (key) {
	          return looseEqual(a[key], b[key])
	        })
	      } else {
	        /* istanbul ignore next */
	        return false
	      }
	    } catch (e) {
	      /* istanbul ignore next */
	      return false
	    }
	  } else if (!isObjectA && !isObjectB) {
	    return String(a) === String(b)
	  } else {
	    return false
	  }
	}

	/**
	 * Return the first index at which a loosely equal value can be
	 * found in the array (if value is a plain object, the array must
	 * contain an object of the same shape), or -1 if it is not present.
	 */
	function looseIndexOf (arr, val) {
	  for (var i = 0; i < arr.length; i++) {
	    if (looseEqual(arr[i], val)) { return i }
	  }
	  return -1
	}

	/**
	 * Ensure a function is called only once.
	 */
	function once (fn) {
	  var called = false;
	  return function () {
	    if (!called) {
	      called = true;
	      fn.apply(this, arguments);
	    }
	  }
	}

	var SSR_ATTR = 'data-server-rendered';

	var ASSET_TYPES = [
	  'component',
	  'directive',
	  'filter'
	];

	var LIFECYCLE_HOOKS = [
	  'beforeCreate',
	  'created',
	  'beforeMount',
	  'mounted',
	  'beforeUpdate',
	  'updated',
	  'beforeDestroy',
	  'destroyed',
	  'activated',
	  'deactivated',
	  'errorCaptured',
	  'serverPrefetch'
	];

	/*  */



	var config = ({
	  /**
	   * Option merge strategies (used in core/util/options)
	   */
	  // $flow-disable-line
	  optionMergeStrategies: Object.create(null),

	  /**
	   * Whether to suppress warnings.
	   */
	  silent: false,

	  /**
	   * Show production mode tip message on boot?
	   */
	  productionTip: "developement" !== 'production',

	  /**
	   * Whether to enable devtools
	   */
	  devtools: "developement" !== 'production',

	  /**
	   * Whether to record perf
	   */
	  performance: false,

	  /**
	   * Error handler for watcher errors
	   */
	  errorHandler: null,

	  /**
	   * Warn handler for watcher warns
	   */
	  warnHandler: null,

	  /**
	   * Ignore certain custom elements
	   */
	  ignoredElements: [],

	  /**
	   * Custom user key aliases for v-on
	   */
	  // $flow-disable-line
	  keyCodes: Object.create(null),

	  /**
	   * Check if a tag is reserved so that it cannot be registered as a
	   * component. This is platform-dependent and may be overwritten.
	   */
	  isReservedTag: no,

	  /**
	   * Check if an attribute is reserved so that it cannot be used as a component
	   * prop. This is platform-dependent and may be overwritten.
	   */
	  isReservedAttr: no,

	  /**
	   * Check if a tag is an unknown element.
	   * Platform-dependent.
	   */
	  isUnknownElement: no,

	  /**
	   * Get the namespace of an element
	   */
	  getTagNamespace: noop,

	  /**
	   * Parse the real tag name for the specific platform.
	   */
	  parsePlatformTagName: identity$1,

	  /**
	   * Check if an attribute must be bound using property, e.g. value
	   * Platform-dependent.
	   */
	  mustUseProp: no,

	  /**
	   * Perform updates asynchronously. Intended to be used by Vue Test Utils
	   * This will significantly reduce performance if set to false.
	   */
	  async: true,

	  /**
	   * Exposed for legacy reasons
	   */
	  _lifecycleHooks: LIFECYCLE_HOOKS
	});

	/*  */

	/**
	 * unicode letters used for parsing html tags, component names and property paths.
	 * using https://www.w3.org/TR/html53/semantics-scripting.html#potentialcustomelementname
	 * skipping \u10000-\uEFFFF due to it freezing up PhantomJS
	 */
	var unicodeRegExp = /a-zA-Z\u00B7\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u037D\u037F-\u1FFF\u200C-\u200D\u203F-\u2040\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD/;

	/**
	 * Check if a string starts with $ or _
	 */
	function isReserved (str) {
	  var c = (str + '').charCodeAt(0);
	  return c === 0x24 || c === 0x5F
	}

	/**
	 * Define a property.
	 */
	function def (obj, key, val, enumerable) {
	  Object.defineProperty(obj, key, {
	    value: val,
	    enumerable: !!enumerable,
	    writable: true,
	    configurable: true
	  });
	}

	/**
	 * Parse simple path.
	 */
	var bailRE = new RegExp(("[^" + (unicodeRegExp.source) + ".$_\\d]"));
	function parsePath (path) {
	  if (bailRE.test(path)) {
	    return
	  }
	  var segments = path.split('.');
	  return function (obj) {
	    for (var i = 0; i < segments.length; i++) {
	      if (!obj) { return }
	      obj = obj[segments[i]];
	    }
	    return obj
	  }
	}

	/*  */

	// can we use __proto__?
	var hasProto = '__proto__' in {};

	// Browser environment sniffing
	var inBrowser = typeof window !== 'undefined';
	var inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform;
	var weexPlatform = inWeex && WXEnvironment.platform.toLowerCase();
	var UA = inBrowser && window.navigator.userAgent.toLowerCase();
	var isIE = UA && /msie|trident/.test(UA);
	var isIE9 = UA && UA.indexOf('msie 9.0') > 0;
	var isEdge = UA && UA.indexOf('edge/') > 0;
	var isAndroid = (UA && UA.indexOf('android') > 0) || (weexPlatform === 'android');
	var isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || (weexPlatform === 'ios');
	var isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge;
	var isPhantomJS = UA && /phantomjs/.test(UA);
	var isFF = UA && UA.match(/firefox\/(\d+)/);

	// Firefox has a "watch" function on Object.prototype...
	var nativeWatch = ({}).watch;

	var supportsPassive = false;
	if (inBrowser) {
	  try {
	    var opts = {};
	    Object.defineProperty(opts, 'passive', ({
	      get: function get () {
	        /* istanbul ignore next */
	        supportsPassive = true;
	      }
	    })); // https://github.com/facebook/flow/issues/285
	    window.addEventListener('test-passive', null, opts);
	  } catch (e) {}
	}

	// this needs to be lazy-evaled because vue may be required before
	// vue-server-renderer can set VUE_ENV
	var _isServer;
	var isServerRendering = function () {
	  if (_isServer === undefined) {
	    /* istanbul ignore if */
	    if (!inBrowser && !inWeex && typeof global !== 'undefined') {
	      // detect presence of vue-server-renderer and avoid
	      // Webpack shimming the process
	      _isServer = global['process'] && global['process'].env.VUE_ENV === 'server';
	    } else {
	      _isServer = false;
	    }
	  }
	  return _isServer
	};

	// detect devtools
	var devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__;

	/* istanbul ignore next */
	function isNative (Ctor) {
	  return typeof Ctor === 'function' && /native code/.test(Ctor.toString())
	}

	var hasSymbol =
	  typeof Symbol !== 'undefined' && isNative(Symbol) &&
	  typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys);

	var _Set;
	/* istanbul ignore if */ // $flow-disable-line
	if (typeof Set !== 'undefined' && isNative(Set)) {
	  // use native Set when available.
	  _Set = Set;
	} else {
	  // a non-standard Set polyfill that only works with primitive keys.
	  _Set = /*@__PURE__*/(function () {
	    function Set () {
	      this.set = Object.create(null);
	    }
	    Set.prototype.has = function has (key) {
	      return this.set[key] === true
	    };
	    Set.prototype.add = function add (key) {
	      this.set[key] = true;
	    };
	    Set.prototype.clear = function clear () {
	      this.set = Object.create(null);
	    };

	    return Set;
	  }());
	}

	/*  */

	var warn = noop;
	var tip = noop;
	var generateComponentTrace = (noop); // work around flow check
	var formatComponentName = (noop);

	{
	  var hasConsole = typeof console !== 'undefined';
	  var classifyRE = /(?:^|[-_])(\w)/g;
	  var classify = function (str) { return str
	    .replace(classifyRE, function (c) { return c.toUpperCase(); })
	    .replace(/[-_]/g, ''); };

	  warn = function (msg, vm) {
	    var trace = vm ? generateComponentTrace(vm) : '';

	    if (config.warnHandler) {
	      config.warnHandler.call(null, msg, vm, trace);
	    } else if (hasConsole && (!config.silent)) {
	      console.error(("[Vue warn]: " + msg + trace));
	    }
	  };

	  tip = function (msg, vm) {
	    if (hasConsole && (!config.silent)) {
	      console.warn("[Vue tip]: " + msg + (
	        vm ? generateComponentTrace(vm) : ''
	      ));
	    }
	  };

	  formatComponentName = function (vm, includeFile) {
	    if (vm.$root === vm) {
	      return '<Root>'
	    }
	    var options = typeof vm === 'function' && vm.cid != null
	      ? vm.options
	      : vm._isVue
	        ? vm.$options || vm.constructor.options
	        : vm;
	    var name = options.name || options._componentTag;
	    var file = options.__file;
	    if (!name && file) {
	      var match = file.match(/([^/\\]+)\.vue$/);
	      name = match && match[1];
	    }

	    return (
	      (name ? ("<" + (classify(name)) + ">") : "<Anonymous>") +
	      (file && includeFile !== false ? (" at " + file) : '')
	    )
	  };

	  var repeat = function (str, n) {
	    var res = '';
	    while (n) {
	      if (n % 2 === 1) { res += str; }
	      if (n > 1) { str += str; }
	      n >>= 1;
	    }
	    return res
	  };

	  generateComponentTrace = function (vm) {
	    if (vm._isVue && vm.$parent) {
	      var tree = [];
	      var currentRecursiveSequence = 0;
	      while (vm) {
	        if (tree.length > 0) {
	          var last = tree[tree.length - 1];
	          if (last.constructor === vm.constructor) {
	            currentRecursiveSequence++;
	            vm = vm.$parent;
	            continue
	          } else if (currentRecursiveSequence > 0) {
	            tree[tree.length - 1] = [last, currentRecursiveSequence];
	            currentRecursiveSequence = 0;
	          }
	        }
	        tree.push(vm);
	        vm = vm.$parent;
	      }
	      return '\n\nfound in\n\n' + tree
	        .map(function (vm, i) { return ("" + (i === 0 ? '---> ' : repeat(' ', 5 + i * 2)) + (Array.isArray(vm)
	            ? ((formatComponentName(vm[0])) + "... (" + (vm[1]) + " recursive calls)")
	            : formatComponentName(vm))); })
	        .join('\n')
	    } else {
	      return ("\n\n(found in " + (formatComponentName(vm)) + ")")
	    }
	  };
	}

	/*  */

	var uid$1 = 0;

	/**
	 * A dep is an observable that can have multiple
	 * directives subscribing to it.
	 */
	var Dep = function Dep () {
	  this.id = uid$1++;
	  this.subs = [];
	};

	Dep.prototype.addSub = function addSub (sub) {
	  this.subs.push(sub);
	};

	Dep.prototype.removeSub = function removeSub (sub) {
	  remove(this.subs, sub);
	};

	Dep.prototype.depend = function depend () {
	  if (Dep.target) {
	    Dep.target.addDep(this);
	  }
	};

	Dep.prototype.notify = function notify () {
	  // stabilize the subscriber list first
	  var subs = this.subs.slice();
	  if (!config.async) {
	    // subs aren't sorted in scheduler if not running async
	    // we need to sort them now to make sure they fire in correct
	    // order
	    subs.sort(function (a, b) { return a.id - b.id; });
	  }
	  for (var i = 0, l = subs.length; i < l; i++) {
	    subs[i].update();
	  }
	};

	// The current target watcher being evaluated.
	// This is globally unique because only one watcher
	// can be evaluated at a time.
	Dep.target = null;
	var targetStack = [];

	function pushTarget (target) {
	  targetStack.push(target);
	  Dep.target = target;
	}

	function popTarget () {
	  targetStack.pop();
	  Dep.target = targetStack[targetStack.length - 1];
	}

	/*  */

	var VNode = function VNode (
	  tag,
	  data,
	  children,
	  text,
	  elm,
	  context,
	  componentOptions,
	  asyncFactory
	) {
	  this.tag = tag;
	  this.data = data;
	  this.children = children;
	  this.text = text;
	  this.elm = elm;
	  this.ns = undefined;
	  this.context = context;
	  this.fnContext = undefined;
	  this.fnOptions = undefined;
	  this.fnScopeId = undefined;
	  this.key = data && data.key;
	  this.componentOptions = componentOptions;
	  this.componentInstance = undefined;
	  this.parent = undefined;
	  this.raw = false;
	  this.isStatic = false;
	  this.isRootInsert = true;
	  this.isComment = false;
	  this.isCloned = false;
	  this.isOnce = false;
	  this.asyncFactory = asyncFactory;
	  this.asyncMeta = undefined;
	  this.isAsyncPlaceholder = false;
	};

	var prototypeAccessors = { child: { configurable: true } };

	// DEPRECATED: alias for componentInstance for backwards compat.
	/* istanbul ignore next */
	prototypeAccessors.child.get = function () {
	  return this.componentInstance
	};

	Object.defineProperties( VNode.prototype, prototypeAccessors );

	var createEmptyVNode = function (text) {
	  if ( text === void 0 ) text = '';

	  var node = new VNode();
	  node.text = text;
	  node.isComment = true;
	  return node
	};

	function createTextVNode (val) {
	  return new VNode(undefined, undefined, undefined, String(val))
	}

	// optimized shallow clone
	// used for static nodes and slot nodes because they may be reused across
	// multiple renders, cloning them avoids errors when DOM manipulations rely
	// on their elm reference.
	function cloneVNode (vnode) {
	  var cloned = new VNode(
	    vnode.tag,
	    vnode.data,
	    // #7975
	    // clone children array to avoid mutating original in case of cloning
	    // a child.
	    vnode.children && vnode.children.slice(),
	    vnode.text,
	    vnode.elm,
	    vnode.context,
	    vnode.componentOptions,
	    vnode.asyncFactory
	  );
	  cloned.ns = vnode.ns;
	  cloned.isStatic = vnode.isStatic;
	  cloned.key = vnode.key;
	  cloned.isComment = vnode.isComment;
	  cloned.fnContext = vnode.fnContext;
	  cloned.fnOptions = vnode.fnOptions;
	  cloned.fnScopeId = vnode.fnScopeId;
	  cloned.asyncMeta = vnode.asyncMeta;
	  cloned.isCloned = true;
	  return cloned
	}

	/*
	 * not type checking this file because flow doesn't play well with
	 * dynamically accessing methods on Array prototype
	 */

	var arrayProto = Array.prototype;
	var arrayMethods = Object.create(arrayProto);

	var methodsToPatch = [
	  'push',
	  'pop',
	  'shift',
	  'unshift',
	  'splice',
	  'sort',
	  'reverse'
	];

	/**
	 * Intercept mutating methods and emit events
	 */
	methodsToPatch.forEach(function (method) {
	  // cache original method
	  var original = arrayProto[method];
	  def(arrayMethods, method, function mutator () {
	    var args = [], len = arguments.length;
	    while ( len-- ) args[ len ] = arguments[ len ];

	    var result = original.apply(this, args);
	    var ob = this.__ob__;
	    var inserted;
	    switch (method) {
	      case 'push':
	      case 'unshift':
	        inserted = args;
	        break
	      case 'splice':
	        inserted = args.slice(2);
	        break
	    }
	    if (inserted) { ob.observeArray(inserted); }
	    // notify change
	    ob.dep.notify();
	    return result
	  });
	});

	/*  */

	var arrayKeys$1 = Object.getOwnPropertyNames(arrayMethods);

	/**
	 * In some cases we may want to disable observation inside a component's
	 * update computation.
	 */
	var shouldObserve = true;

	function toggleObserving (value) {
	  shouldObserve = value;
	}

	/**
	 * Observer class that is attached to each observed
	 * object. Once attached, the observer converts the target
	 * object's property keys into getter/setters that
	 * collect dependencies and dispatch updates.
	 */
	var Observer = function Observer (value) {
	  this.value = value;
	  this.dep = new Dep();
	  this.vmCount = 0;
	  def(value, '__ob__', this);
	  if (Array.isArray(value)) {
	    if (hasProto) {
	      protoAugment(value, arrayMethods);
	    } else {
	      copyAugment(value, arrayMethods, arrayKeys$1);
	    }
	    this.observeArray(value);
	  } else {
	    this.walk(value);
	  }
	};

	/**
	 * Walk through all properties and convert them into
	 * getter/setters. This method should only be called when
	 * value type is Object.
	 */
	Observer.prototype.walk = function walk (obj) {
	  var keys = Object.keys(obj);
	  for (var i = 0; i < keys.length; i++) {
	    defineReactive$$1(obj, keys[i]);
	  }
	};

	/**
	 * Observe a list of Array items.
	 */
	Observer.prototype.observeArray = function observeArray (items) {
	  for (var i = 0, l = items.length; i < l; i++) {
	    observe(items[i]);
	  }
	};

	// helpers

	/**
	 * Augment a target Object or Array by intercepting
	 * the prototype chain using __proto__
	 */
	function protoAugment (target, src) {
	  /* eslint-disable no-proto */
	  target.__proto__ = src;
	  /* eslint-enable no-proto */
	}

	/**
	 * Augment a target Object or Array by defining
	 * hidden properties.
	 */
	/* istanbul ignore next */
	function copyAugment (target, src, keys) {
	  for (var i = 0, l = keys.length; i < l; i++) {
	    var key = keys[i];
	    def(target, key, src[key]);
	  }
	}

	/**
	 * Attempt to create an observer instance for a value,
	 * returns the new observer if successfully observed,
	 * or the existing observer if the value already has one.
	 */
	function observe (value, asRootData) {
	  if (!isObject$2(value) || value instanceof VNode) {
	    return
	  }
	  var ob;
	  if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {
	    ob = value.__ob__;
	  } else if (
	    shouldObserve &&
	    !isServerRendering() &&
	    (Array.isArray(value) || isPlainObject(value)) &&
	    Object.isExtensible(value) &&
	    !value._isVue
	  ) {
	    ob = new Observer(value);
	  }
	  if (asRootData && ob) {
	    ob.vmCount++;
	  }
	  return ob
	}

	/**
	 * Define a reactive property on an Object.
	 */
	function defineReactive$$1 (
	  obj,
	  key,
	  val,
	  customSetter,
	  shallow
	) {
	  var dep = new Dep();

	  var property = Object.getOwnPropertyDescriptor(obj, key);
	  if (property && property.configurable === false) {
	    return
	  }

	  // cater for pre-defined getter/setters
	  var getter = property && property.get;
	  var setter = property && property.set;
	  if ((!getter || setter) && arguments.length === 2) {
	    val = obj[key];
	  }

	  var childOb = !shallow && observe(val);
	  Object.defineProperty(obj, key, {
	    enumerable: true,
	    configurable: true,
	    get: function reactiveGetter () {
	      var value = getter ? getter.call(obj) : val;
	      if (Dep.target) {
	        dep.depend();
	        if (childOb) {
	          childOb.dep.depend();
	          if (Array.isArray(value)) {
	            dependArray(value);
	          }
	        }
	      }
	      return value
	    },
	    set: function reactiveSetter (newVal) {
	      var value = getter ? getter.call(obj) : val;
	      /* eslint-disable no-self-compare */
	      if (newVal === value || (newVal !== newVal && value !== value)) {
	        return
	      }
	      /* eslint-enable no-self-compare */
	      if (customSetter) {
	        customSetter();
	      }
	      // #7981: for accessor properties without setter
	      if (getter && !setter) { return }
	      if (setter) {
	        setter.call(obj, newVal);
	      } else {
	        val = newVal;
	      }
	      childOb = !shallow && observe(newVal);
	      dep.notify();
	    }
	  });
	}

	/**
	 * Set a property on an object. Adds the new property and
	 * triggers change notification if the property doesn't
	 * already exist.
	 */
	function set$3 (target, key, val) {
	  if (isUndef(target) || isPrimitive(target)
	  ) {
	    warn(("Cannot set reactive property on undefined, null, or primitive value: " + ((target))));
	  }
	  if (Array.isArray(target) && isValidArrayIndex(key)) {
	    target.length = Math.max(target.length, key);
	    target.splice(key, 1, val);
	    return val
	  }
	  if (key in target && !(key in Object.prototype)) {
	    target[key] = val;
	    return val
	  }
	  var ob = (target).__ob__;
	  if (target._isVue || (ob && ob.vmCount)) {
	    warn(
	      'Avoid adding reactive properties to a Vue instance or its root $data ' +
	      'at runtime - declare it upfront in the data option.'
	    );
	    return val
	  }
	  if (!ob) {
	    target[key] = val;
	    return val
	  }
	  defineReactive$$1(ob.value, key, val);
	  ob.dep.notify();
	  return val
	}

	/**
	 * Delete a property and trigger change if necessary.
	 */
	function del (target, key) {
	  if (isUndef(target) || isPrimitive(target)
	  ) {
	    warn(("Cannot delete reactive property on undefined, null, or primitive value: " + ((target))));
	  }
	  if (Array.isArray(target) && isValidArrayIndex(key)) {
	    target.splice(key, 1);
	    return
	  }
	  var ob = (target).__ob__;
	  if (target._isVue || (ob && ob.vmCount)) {
	    warn(
	      'Avoid deleting properties on a Vue instance or its root $data ' +
	      '- just set it to null.'
	    );
	    return
	  }
	  if (!hasOwn(target, key)) {
	    return
	  }
	  delete target[key];
	  if (!ob) {
	    return
	  }
	  ob.dep.notify();
	}

	/**
	 * Collect dependencies on array elements when the array is touched, since
	 * we cannot intercept array element access like property getters.
	 */
	function dependArray (value) {
	  for (var e = (void 0), i = 0, l = value.length; i < l; i++) {
	    e = value[i];
	    e && e.__ob__ && e.__ob__.dep.depend();
	    if (Array.isArray(e)) {
	      dependArray(e);
	    }
	  }
	}

	/*  */

	/**
	 * Option overwriting strategies are functions that handle
	 * how to merge a parent option value and a child option
	 * value into the final value.
	 */
	var strats = config.optionMergeStrategies;

	/**
	 * Options with restrictions
	 */
	{
	  strats.el = strats.propsData = function (parent, child, vm, key) {
	    if (!vm) {
	      warn(
	        "option \"" + key + "\" can only be used during instance " +
	        'creation with the `new` keyword.'
	      );
	    }
	    return defaultStrat(parent, child)
	  };
	}

	/**
	 * Helper that recursively merges two data objects together.
	 */
	function mergeData (to, from) {
	  if (!from) { return to }
	  var key, toVal, fromVal;

	  var keys = hasSymbol
	    ? Reflect.ownKeys(from)
	    : Object.keys(from);

	  for (var i = 0; i < keys.length; i++) {
	    key = keys[i];
	    // in case the object is already observed...
	    if (key === '__ob__') { continue }
	    toVal = to[key];
	    fromVal = from[key];
	    if (!hasOwn(to, key)) {
	      set$3(to, key, fromVal);
	    } else if (
	      toVal !== fromVal &&
	      isPlainObject(toVal) &&
	      isPlainObject(fromVal)
	    ) {
	      mergeData(toVal, fromVal);
	    }
	  }
	  return to
	}

	/**
	 * Data
	 */
	function mergeDataOrFn (
	  parentVal,
	  childVal,
	  vm
	) {
	  if (!vm) {
	    // in a Vue.extend merge, both should be functions
	    if (!childVal) {
	      return parentVal
	    }
	    if (!parentVal) {
	      return childVal
	    }
	    // when parentVal & childVal are both present,
	    // we need to return a function that returns the
	    // merged result of both functions... no need to
	    // check if parentVal is a function here because
	    // it has to be a function to pass previous merges.
	    return function mergedDataFn () {
	      return mergeData(
	        typeof childVal === 'function' ? childVal.call(this, this) : childVal,
	        typeof parentVal === 'function' ? parentVal.call(this, this) : parentVal
	      )
	    }
	  } else {
	    return function mergedInstanceDataFn () {
	      // instance merge
	      var instanceData = typeof childVal === 'function'
	        ? childVal.call(vm, vm)
	        : childVal;
	      var defaultData = typeof parentVal === 'function'
	        ? parentVal.call(vm, vm)
	        : parentVal;
	      if (instanceData) {
	        return mergeData(instanceData, defaultData)
	      } else {
	        return defaultData
	      }
	    }
	  }
	}

	strats.data = function (
	  parentVal,
	  childVal,
	  vm
	) {
	  if (!vm) {
	    if (childVal && typeof childVal !== 'function') {
	      warn(
	        'The "data" option should be a function ' +
	        'that returns a per-instance value in component ' +
	        'definitions.',
	        vm
	      );

	      return parentVal
	    }
	    return mergeDataOrFn(parentVal, childVal)
	  }

	  return mergeDataOrFn(parentVal, childVal, vm)
	};

	/**
	 * Hooks and props are merged as arrays.
	 */
	function mergeHook (
	  parentVal,
	  childVal
	) {
	  var res = childVal
	    ? parentVal
	      ? parentVal.concat(childVal)
	      : Array.isArray(childVal)
	        ? childVal
	        : [childVal]
	    : parentVal;
	  return res
	    ? dedupeHooks(res)
	    : res
	}

	function dedupeHooks (hooks) {
	  var res = [];
	  for (var i = 0; i < hooks.length; i++) {
	    if (res.indexOf(hooks[i]) === -1) {
	      res.push(hooks[i]);
	    }
	  }
	  return res
	}

	LIFECYCLE_HOOKS.forEach(function (hook) {
	  strats[hook] = mergeHook;
	});

	/**
	 * Assets
	 *
	 * When a vm is present (instance creation), we need to do
	 * a three-way merge between constructor options, instance
	 * options and parent options.
	 */
	function mergeAssets (
	  parentVal,
	  childVal,
	  vm,
	  key
	) {
	  var res = Object.create(parentVal || null);
	  if (childVal) {
	    assertObjectType(key, childVal, vm);
	    return extend(res, childVal)
	  } else {
	    return res
	  }
	}

	ASSET_TYPES.forEach(function (type) {
	  strats[type + 's'] = mergeAssets;
	});

	/**
	 * Watchers.
	 *
	 * Watchers hashes should not overwrite one
	 * another, so we merge them as arrays.
	 */
	strats.watch = function (
	  parentVal,
	  childVal,
	  vm,
	  key
	) {
	  // work around Firefox's Object.prototype.watch...
	  if (parentVal === nativeWatch) { parentVal = undefined; }
	  if (childVal === nativeWatch) { childVal = undefined; }
	  /* istanbul ignore if */
	  if (!childVal) { return Object.create(parentVal || null) }
	  {
	    assertObjectType(key, childVal, vm);
	  }
	  if (!parentVal) { return childVal }
	  var ret = {};
	  extend(ret, parentVal);
	  for (var key$1 in childVal) {
	    var parent = ret[key$1];
	    var child = childVal[key$1];
	    if (parent && !Array.isArray(parent)) {
	      parent = [parent];
	    }
	    ret[key$1] = parent
	      ? parent.concat(child)
	      : Array.isArray(child) ? child : [child];
	  }
	  return ret
	};

	/**
	 * Other object hashes.
	 */
	strats.props =
	strats.methods =
	strats.inject =
	strats.computed = function (
	  parentVal,
	  childVal,
	  vm,
	  key
	) {
	  if (childVal && "developement" !== 'production') {
	    assertObjectType(key, childVal, vm);
	  }
	  if (!parentVal) { return childVal }
	  var ret = Object.create(null);
	  extend(ret, parentVal);
	  if (childVal) { extend(ret, childVal); }
	  return ret
	};
	strats.provide = mergeDataOrFn;

	/**
	 * Default strategy.
	 */
	var defaultStrat = function (parentVal, childVal) {
	  return childVal === undefined
	    ? parentVal
	    : childVal
	};

	/**
	 * Validate component names
	 */
	function checkComponents (options) {
	  for (var key in options.components) {
	    validateComponentName(key);
	  }
	}

	function validateComponentName (name) {
	  if (!new RegExp(("^[a-zA-Z][\\-\\.0-9_" + (unicodeRegExp.source) + "]*$")).test(name)) {
	    warn(
	      'Invalid component name: "' + name + '". Component names ' +
	      'should conform to valid custom element name in html5 specification.'
	    );
	  }
	  if (isBuiltInTag(name) || config.isReservedTag(name)) {
	    warn(
	      'Do not use built-in or reserved HTML elements as component ' +
	      'id: ' + name
	    );
	  }
	}

	/**
	 * Ensure all props option syntax are normalized into the
	 * Object-based format.
	 */
	function normalizeProps (options, vm) {
	  var props = options.props;
	  if (!props) { return }
	  var res = {};
	  var i, val, name;
	  if (Array.isArray(props)) {
	    i = props.length;
	    while (i--) {
	      val = props[i];
	      if (typeof val === 'string') {
	        name = camelize(val);
	        res[name] = { type: null };
	      } else {
	        warn('props must be strings when using array syntax.');
	      }
	    }
	  } else if (isPlainObject(props)) {
	    for (var key in props) {
	      val = props[key];
	      name = camelize(key);
	      res[name] = isPlainObject(val)
	        ? val
	        : { type: val };
	    }
	  } else {
	    warn(
	      "Invalid value for option \"props\": expected an Array or an Object, " +
	      "but got " + (toRawType(props)) + ".",
	      vm
	    );
	  }
	  options.props = res;
	}

	/**
	 * Normalize all injections into Object-based format
	 */
	function normalizeInject (options, vm) {
	  var inject = options.inject;
	  if (!inject) { return }
	  var normalized = options.inject = {};
	  if (Array.isArray(inject)) {
	    for (var i = 0; i < inject.length; i++) {
	      normalized[inject[i]] = { from: inject[i] };
	    }
	  } else if (isPlainObject(inject)) {
	    for (var key in inject) {
	      var val = inject[key];
	      normalized[key] = isPlainObject(val)
	        ? extend({ from: key }, val)
	        : { from: val };
	    }
	  } else {
	    warn(
	      "Invalid value for option \"inject\": expected an Array or an Object, " +
	      "but got " + (toRawType(inject)) + ".",
	      vm
	    );
	  }
	}

	/**
	 * Normalize raw function directives into object format.
	 */
	function normalizeDirectives (options) {
	  var dirs = options.directives;
	  if (dirs) {
	    for (var key in dirs) {
	      var def$$1 = dirs[key];
	      if (typeof def$$1 === 'function') {
	        dirs[key] = { bind: def$$1, update: def$$1 };
	      }
	    }
	  }
	}

	function assertObjectType (name, value, vm) {
	  if (!isPlainObject(value)) {
	    warn(
	      "Invalid value for option \"" + name + "\": expected an Object, " +
	      "but got " + (toRawType(value)) + ".",
	      vm
	    );
	  }
	}

	/**
	 * Merge two option objects into a new one.
	 * Core utility used in both instantiation and inheritance.
	 */
	function mergeOptions (
	  parent,
	  child,
	  vm
	) {
	  {
	    checkComponents(child);
	  }

	  if (typeof child === 'function') {
	    child = child.options;
	  }

	  normalizeProps(child, vm);
	  normalizeInject(child, vm);
	  normalizeDirectives(child);

	  // Apply extends and mixins on the child options,
	  // but only if it is a raw options object that isn't
	  // the result of another mergeOptions call.
	  // Only merged options has the _base property.
	  if (!child._base) {
	    if (child.extends) {
	      parent = mergeOptions(parent, child.extends, vm);
	    }
	    if (child.mixins) {
	      for (var i = 0, l = child.mixins.length; i < l; i++) {
	        parent = mergeOptions(parent, child.mixins[i], vm);
	      }
	    }
	  }

	  var options = {};
	  var key;
	  for (key in parent) {
	    mergeField(key);
	  }
	  for (key in child) {
	    if (!hasOwn(parent, key)) {
	      mergeField(key);
	    }
	  }
	  function mergeField (key) {
	    var strat = strats[key] || defaultStrat;
	    options[key] = strat(parent[key], child[key], vm, key);
	  }
	  return options
	}

	/**
	 * Resolve an asset.
	 * This function is used because child instances need access
	 * to assets defined in its ancestor chain.
	 */
	function resolveAsset (
	  options,
	  type,
	  id,
	  warnMissing
	) {
	  /* istanbul ignore if */
	  if (typeof id !== 'string') {
	    return
	  }
	  var assets = options[type];
	  // check local registration variations first
	  if (hasOwn(assets, id)) { return assets[id] }
	  var camelizedId = camelize(id);
	  if (hasOwn(assets, camelizedId)) { return assets[camelizedId] }
	  var PascalCaseId = capitalize(camelizedId);
	  if (hasOwn(assets, PascalCaseId)) { return assets[PascalCaseId] }
	  // fallback to prototype chain
	  var res = assets[id] || assets[camelizedId] || assets[PascalCaseId];
	  if (warnMissing && !res) {
	    warn(
	      'Failed to resolve ' + type.slice(0, -1) + ': ' + id,
	      options
	    );
	  }
	  return res
	}

	/*  */



	function validateProp (
	  key,
	  propOptions,
	  propsData,
	  vm
	) {
	  var prop = propOptions[key];
	  var absent = !hasOwn(propsData, key);
	  var value = propsData[key];
	  // boolean casting
	  var booleanIndex = getTypeIndex(Boolean, prop.type);
	  if (booleanIndex > -1) {
	    if (absent && !hasOwn(prop, 'default')) {
	      value = false;
	    } else if (value === '' || value === hyphenate(key)) {
	      // only cast empty string / same name to boolean if
	      // boolean has higher priority
	      var stringIndex = getTypeIndex(String, prop.type);
	      if (stringIndex < 0 || booleanIndex < stringIndex) {
	        value = true;
	      }
	    }
	  }
	  // check default value
	  if (value === undefined) {
	    value = getPropDefaultValue(vm, prop, key);
	    // since the default value is a fresh copy,
	    // make sure to observe it.
	    var prevShouldObserve = shouldObserve;
	    toggleObserving(true);
	    observe(value);
	    toggleObserving(prevShouldObserve);
	  }
	  {
	    assertProp(prop, key, value, vm, absent);
	  }
	  return value
	}

	/**
	 * Get the default value of a prop.
	 */
	function getPropDefaultValue (vm, prop, key) {
	  // no default, return undefined
	  if (!hasOwn(prop, 'default')) {
	    return undefined
	  }
	  var def = prop.default;
	  // warn against non-factory defaults for Object & Array
	  if (isObject$2(def)) {
	    warn(
	      'Invalid default value for prop "' + key + '": ' +
	      'Props with type Object/Array must use a factory function ' +
	      'to return the default value.',
	      vm
	    );
	  }
	  // the raw prop value was also undefined from previous render,
	  // return previous default value to avoid unnecessary watcher trigger
	  if (vm && vm.$options.propsData &&
	    vm.$options.propsData[key] === undefined &&
	    vm._props[key] !== undefined
	  ) {
	    return vm._props[key]
	  }
	  // call factory function for non-Function types
	  // a value is Function if its prototype is function even across different execution context
	  return typeof def === 'function' && getType(prop.type) !== 'Function'
	    ? def.call(vm)
	    : def
	}

	/**
	 * Assert whether a prop is valid.
	 */
	function assertProp (
	  prop,
	  name,
	  value,
	  vm,
	  absent
	) {
	  if (prop.required && absent) {
	    warn(
	      'Missing required prop: "' + name + '"',
	      vm
	    );
	    return
	  }
	  if (value == null && !prop.required) {
	    return
	  }
	  var type = prop.type;
	  var valid = !type || type === true;
	  var expectedTypes = [];
	  if (type) {
	    if (!Array.isArray(type)) {
	      type = [type];
	    }
	    for (var i = 0; i < type.length && !valid; i++) {
	      var assertedType = assertType(value, type[i]);
	      expectedTypes.push(assertedType.expectedType || '');
	      valid = assertedType.valid;
	    }
	  }

	  if (!valid) {
	    warn(
	      getInvalidTypeMessage(name, value, expectedTypes),
	      vm
	    );
	    return
	  }
	  var validator = prop.validator;
	  if (validator) {
	    if (!validator(value)) {
	      warn(
	        'Invalid prop: custom validator check failed for prop "' + name + '".',
	        vm
	      );
	    }
	  }
	}

	var simpleCheckRE = /^(String|Number|Boolean|Function|Symbol)$/;

	function assertType (value, type) {
	  var valid;
	  var expectedType = getType(type);
	  if (simpleCheckRE.test(expectedType)) {
	    var t = typeof value;
	    valid = t === expectedType.toLowerCase();
	    // for primitive wrapper objects
	    if (!valid && t === 'object') {
	      valid = value instanceof type;
	    }
	  } else if (expectedType === 'Object') {
	    valid = isPlainObject(value);
	  } else if (expectedType === 'Array') {
	    valid = Array.isArray(value);
	  } else {
	    valid = value instanceof type;
	  }
	  return {
	    valid: valid,
	    expectedType: expectedType
	  }
	}

	/**
	 * Use function string name to check built-in types,
	 * because a simple equality check will fail when running
	 * across different vms / iframes.
	 */
	function getType (fn) {
	  var match = fn && fn.toString().match(/^\s*function (\w+)/);
	  return match ? match[1] : ''
	}

	function isSameType (a, b) {
	  return getType(a) === getType(b)
	}

	function getTypeIndex (type, expectedTypes) {
	  if (!Array.isArray(expectedTypes)) {
	    return isSameType(expectedTypes, type) ? 0 : -1
	  }
	  for (var i = 0, len = expectedTypes.length; i < len; i++) {
	    if (isSameType(expectedTypes[i], type)) {
	      return i
	    }
	  }
	  return -1
	}

	function getInvalidTypeMessage (name, value, expectedTypes) {
	  var message = "Invalid prop: type check failed for prop \"" + name + "\"." +
	    " Expected " + (expectedTypes.map(capitalize).join(', '));
	  var expectedType = expectedTypes[0];
	  var receivedType = toRawType(value);
	  var expectedValue = styleValue(value, expectedType);
	  var receivedValue = styleValue(value, receivedType);
	  // check if we need to specify expected value
	  if (expectedTypes.length === 1 &&
	      isExplicable(expectedType) &&
	      !isBoolean(expectedType, receivedType)) {
	    message += " with value " + expectedValue;
	  }
	  message += ", got " + receivedType + " ";
	  // check if we need to specify received value
	  if (isExplicable(receivedType)) {
	    message += "with value " + receivedValue + ".";
	  }
	  return message
	}

	function styleValue (value, type) {
	  if (type === 'String') {
	    return ("\"" + value + "\"")
	  } else if (type === 'Number') {
	    return ("" + (Number(value)))
	  } else {
	    return ("" + value)
	  }
	}

	function isExplicable (value) {
	  var explicitTypes = ['string', 'number', 'boolean'];
	  return explicitTypes.some(function (elem) { return value.toLowerCase() === elem; })
	}

	function isBoolean () {
	  var args = [], len = arguments.length;
	  while ( len-- ) args[ len ] = arguments[ len ];

	  return args.some(function (elem) { return elem.toLowerCase() === 'boolean'; })
	}

	/*  */

	function handleError (err, vm, info) {
	  // Deactivate deps tracking while processing error handler to avoid possible infinite rendering.
	  // See: https://github.com/vuejs/vuex/issues/1505
	  pushTarget();
	  try {
	    if (vm) {
	      var cur = vm;
	      while ((cur = cur.$parent)) {
	        var hooks = cur.$options.errorCaptured;
	        if (hooks) {
	          for (var i = 0; i < hooks.length; i++) {
	            try {
	              var capture = hooks[i].call(cur, err, vm, info) === false;
	              if (capture) { return }
	            } catch (e) {
	              globalHandleError(e, cur, 'errorCaptured hook');
	            }
	          }
	        }
	      }
	    }
	    globalHandleError(err, vm, info);
	  } finally {
	    popTarget();
	  }
	}

	function invokeWithErrorHandling (
	  handler,
	  context,
	  args,
	  vm,
	  info
	) {
	  var res;
	  try {
	    res = args ? handler.apply(context, args) : handler.call(context);
	    if (res && !res._isVue && isPromise(res) && !res._handled) {
	      res.catch(function (e) { return handleError(e, vm, info + " (Promise/async)"); });
	      // issue #9511
	      // avoid catch triggering multiple times when nested calls
	      res._handled = true;
	    }
	  } catch (e) {
	    handleError(e, vm, info);
	  }
	  return res
	}

	function globalHandleError (err, vm, info) {
	  if (config.errorHandler) {
	    try {
	      return config.errorHandler.call(null, err, vm, info)
	    } catch (e) {
	      // if the user intentionally throws the original error in the handler,
	      // do not log it twice
	      if (e !== err) {
	        logError(e, null, 'config.errorHandler');
	      }
	    }
	  }
	  logError(err, vm, info);
	}

	function logError (err, vm, info) {
	  {
	    warn(("Error in " + info + ": \"" + (err.toString()) + "\""), vm);
	  }
	  /* istanbul ignore else */
	  if ((inBrowser || inWeex) && typeof console !== 'undefined') {
	    console.error(err);
	  } else {
	    throw err
	  }
	}

	/*  */

	var isUsingMicroTask = false;

	var callbacks = [];
	var pending = false;

	function flushCallbacks () {
	  pending = false;
	  var copies = callbacks.slice(0);
	  callbacks.length = 0;
	  for (var i = 0; i < copies.length; i++) {
	    copies[i]();
	  }
	}

	// Here we have async deferring wrappers using microtasks.
	// In 2.5 we used (macro) tasks (in combination with microtasks).
	// However, it has subtle problems when state is changed right before repaint
	// (e.g. #6813, out-in transitions).
	// Also, using (macro) tasks in event handler would cause some weird behaviors
	// that cannot be circumvented (e.g. #7109, #7153, #7546, #7834, #8109).
	// So we now use microtasks everywhere, again.
	// A major drawback of this tradeoff is that there are some scenarios
	// where microtasks have too high a priority and fire in between supposedly
	// sequential events (e.g. #4521, #6690, which have workarounds)
	// or even between bubbling of the same event (#6566).
	var timerFunc;

	// The nextTick behavior leverages the microtask queue, which can be accessed
	// via either native Promise.then or MutationObserver.
	// MutationObserver has wider support, however it is seriously bugged in
	// UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It
	// completely stops working after triggering a few times... so, if native
	// Promise is available, we will use it:
	/* istanbul ignore next, $flow-disable-line */
	if (typeof Promise !== 'undefined' && isNative(Promise)) {
	  var p = Promise.resolve();
	  timerFunc = function () {
	    p.then(flushCallbacks);
	    // In problematic UIWebViews, Promise.then doesn't completely break, but
	    // it can get stuck in a weird state where callbacks are pushed into the
	    // microtask queue but the queue isn't being flushed, until the browser
	    // needs to do some other work, e.g. handle a timer. Therefore we can
	    // "force" the microtask queue to be flushed by adding an empty timer.
	    if (isIOS) { setTimeout(noop); }
	  };
	  isUsingMicroTask = true;
	} else if (!isIE && typeof MutationObserver !== 'undefined' && (
	  isNative(MutationObserver) ||
	  // PhantomJS and iOS 7.x
	  MutationObserver.toString() === '[object MutationObserverConstructor]'
	)) {
	  // Use MutationObserver where native Promise is not available,
	  // e.g. PhantomJS, iOS7, Android 4.4
	  // (#6466 MutationObserver is unreliable in IE11)
	  var counter$1 = 1;
	  var observer = new MutationObserver(flushCallbacks);
	  var textNode = document.createTextNode(String(counter$1));
	  observer.observe(textNode, {
	    characterData: true
	  });
	  timerFunc = function () {
	    counter$1 = (counter$1 + 1) % 2;
	    textNode.data = String(counter$1);
	  };
	  isUsingMicroTask = true;
	} else if (typeof setImmediate !== 'undefined' && isNative(setImmediate)) {
	  // Fallback to setImmediate.
	  // Techinically it leverages the (macro) task queue,
	  // but it is still a better choice than setTimeout.
	  timerFunc = function () {
	    setImmediate(flushCallbacks);
	  };
	} else {
	  // Fallback to setTimeout.
	  timerFunc = function () {
	    setTimeout(flushCallbacks, 0);
	  };
	}

	function nextTick (cb, ctx) {
	  var _resolve;
	  callbacks.push(function () {
	    if (cb) {
	      try {
	        cb.call(ctx);
	      } catch (e) {
	        handleError(e, ctx, 'nextTick');
	      }
	    } else if (_resolve) {
	      _resolve(ctx);
	    }
	  });
	  if (!pending) {
	    pending = true;
	    timerFunc();
	  }
	  // $flow-disable-line
	  if (!cb && typeof Promise !== 'undefined') {
	    return new Promise(function (resolve) {
	      _resolve = resolve;
	    })
	  }
	}

	/*  */

	/* not type checking this file because flow doesn't play well with Proxy */

	var initProxy;

	{
	  var allowedGlobals = makeMap(
	    'Infinity,undefined,NaN,isFinite,isNaN,' +
	    'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' +
	    'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,' +
	    'require' // for Webpack/Browserify
	  );

	  var warnNonPresent = function (target, key) {
	    warn(
	      "Property or method \"" + key + "\" is not defined on the instance but " +
	      'referenced during render. Make sure that this property is reactive, ' +
	      'either in the data option, or for class-based components, by ' +
	      'initializing the property. ' +
	      'See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.',
	      target
	    );
	  };

	  var warnReservedPrefix = function (target, key) {
	    warn(
	      "Property \"" + key + "\" must be accessed with \"$data." + key + "\" because " +
	      'properties starting with "$" or "_" are not proxied in the Vue instance to ' +
	      'prevent conflicts with Vue internals' +
	      'See: https://vuejs.org/v2/api/#data',
	      target
	    );
	  };

	  var hasProxy =
	    typeof Proxy !== 'undefined' && isNative(Proxy);

	  if (hasProxy) {
	    var isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta,exact');
	    config.keyCodes = new Proxy(config.keyCodes, {
	      set: function set (target, key, value) {
	        if (isBuiltInModifier(key)) {
	          warn(("Avoid overwriting built-in modifier in config.keyCodes: ." + key));
	          return false
	        } else {
	          target[key] = value;
	          return true
	        }
	      }
	    });
	  }

	  var hasHandler = {
	    has: function has (target, key) {
	      var has = key in target;
	      var isAllowed = allowedGlobals(key) ||
	        (typeof key === 'string' && key.charAt(0) === '_' && !(key in target.$data));
	      if (!has && !isAllowed) {
	        if (key in target.$data) { warnReservedPrefix(target, key); }
	        else { warnNonPresent(target, key); }
	      }
	      return has || !isAllowed
	    }
	  };

	  var getHandler = {
	    get: function get (target, key) {
	      if (typeof key === 'string' && !(key in target)) {
	        if (key in target.$data) { warnReservedPrefix(target, key); }
	        else { warnNonPresent(target, key); }
	      }
	      return target[key]
	    }
	  };

	  initProxy = function initProxy (vm) {
	    if (hasProxy) {
	      // determine which proxy handler to use
	      var options = vm.$options;
	      var handlers = options.render && options.render._withStripped
	        ? getHandler
	        : hasHandler;
	      vm._renderProxy = new Proxy(vm, handlers);
	    } else {
	      vm._renderProxy = vm;
	    }
	  };
	}

	/*  */

	var seenObjects = new _Set();

	/**
	 * Recursively traverse an object to evoke all converted
	 * getters, so that every nested property inside the object
	 * is collected as a "deep" dependency.
	 */
	function traverse (val) {
	  _traverse(val, seenObjects);
	  seenObjects.clear();
	}

	function _traverse (val, seen) {
	  var i, keys;
	  var isA = Array.isArray(val);
	  if ((!isA && !isObject$2(val)) || Object.isFrozen(val) || val instanceof VNode) {
	    return
	  }
	  if (val.__ob__) {
	    var depId = val.__ob__.dep.id;
	    if (seen.has(depId)) {
	      return
	    }
	    seen.add(depId);
	  }
	  if (isA) {
	    i = val.length;
	    while (i--) { _traverse(val[i], seen); }
	  } else {
	    keys = Object.keys(val);
	    i = keys.length;
	    while (i--) { _traverse(val[keys[i]], seen); }
	  }
	}

	var mark;
	var measure;

	{
	  var perf = inBrowser && window.performance;
	  /* istanbul ignore if */
	  if (
	    perf &&
	    perf.mark &&
	    perf.measure &&
	    perf.clearMarks &&
	    perf.clearMeasures
	  ) {
	    mark = function (tag) { return perf.mark(tag); };
	    measure = function (name, startTag, endTag) {
	      perf.measure(name, startTag, endTag);
	      perf.clearMarks(startTag);
	      perf.clearMarks(endTag);
	      // perf.clearMeasures(name)
	    };
	  }
	}

	/*  */

	var normalizeEvent = cached(function (name) {
	  var passive = name.charAt(0) === '&';
	  name = passive ? name.slice(1) : name;
	  var once$$1 = name.charAt(0) === '~'; // Prefixed last, checked first
	  name = once$$1 ? name.slice(1) : name;
	  var capture = name.charAt(0) === '!';
	  name = capture ? name.slice(1) : name;
	  return {
	    name: name,
	    once: once$$1,
	    capture: capture,
	    passive: passive
	  }
	});

	function createFnInvoker (fns, vm) {
	  function invoker () {
	    var arguments$1 = arguments;

	    var fns = invoker.fns;
	    if (Array.isArray(fns)) {
	      var cloned = fns.slice();
	      for (var i = 0; i < cloned.length; i++) {
	        invokeWithErrorHandling(cloned[i], null, arguments$1, vm, "v-on handler");
	      }
	    } else {
	      // return handler return value for single handlers
	      return invokeWithErrorHandling(fns, null, arguments, vm, "v-on handler")
	    }
	  }
	  invoker.fns = fns;
	  return invoker
	}

	function updateListeners (
	  on,
	  oldOn,
	  add,
	  remove$$1,
	  createOnceHandler,
	  vm
	) {
	  var name, def$$1, cur, old, event;
	  for (name in on) {
	    def$$1 = cur = on[name];
	    old = oldOn[name];
	    event = normalizeEvent(name);
	    if (isUndef(cur)) {
	      warn(
	        "Invalid handler for event \"" + (event.name) + "\": got " + String(cur),
	        vm
	      );
	    } else if (isUndef(old)) {
	      if (isUndef(cur.fns)) {
	        cur = on[name] = createFnInvoker(cur, vm);
	      }
	      if (isTrue(event.once)) {
	        cur = on[name] = createOnceHandler(event.name, cur, event.capture);
	      }
	      add(event.name, cur, event.capture, event.passive, event.params);
	    } else if (cur !== old) {
	      old.fns = cur;
	      on[name] = old;
	    }
	  }
	  for (name in oldOn) {
	    if (isUndef(on[name])) {
	      event = normalizeEvent(name);
	      remove$$1(event.name, oldOn[name], event.capture);
	    }
	  }
	}

	/*  */

	function mergeVNodeHook (def, hookKey, hook) {
	  if (def instanceof VNode) {
	    def = def.data.hook || (def.data.hook = {});
	  }
	  var invoker;
	  var oldHook = def[hookKey];

	  function wrappedHook () {
	    hook.apply(this, arguments);
	    // important: remove merged hook to ensure it's called only once
	    // and prevent memory leak
	    remove(invoker.fns, wrappedHook);
	  }

	  if (isUndef(oldHook)) {
	    // no existing hook
	    invoker = createFnInvoker([wrappedHook]);
	  } else {
	    /* istanbul ignore if */
	    if (isDef(oldHook.fns) && isTrue(oldHook.merged)) {
	      // already a merged invoker
	      invoker = oldHook;
	      invoker.fns.push(wrappedHook);
	    } else {
	      // existing plain hook
	      invoker = createFnInvoker([oldHook, wrappedHook]);
	    }
	  }

	  invoker.merged = true;
	  def[hookKey] = invoker;
	}

	/*  */

	function extractPropsFromVNodeData (
	  data,
	  Ctor,
	  tag
	) {
	  // we are only extracting raw values here.
	  // validation and default values are handled in the child
	  // component itself.
	  var propOptions = Ctor.options.props;
	  if (isUndef(propOptions)) {
	    return
	  }
	  var res = {};
	  var attrs = data.attrs;
	  var props = data.props;
	  if (isDef(attrs) || isDef(props)) {
	    for (var key in propOptions) {
	      var altKey = hyphenate(key);
	      {
	        var keyInLowerCase = key.toLowerCase();
	        if (
	          key !== keyInLowerCase &&
	          attrs && hasOwn(attrs, keyInLowerCase)
	        ) {
	          tip(
	            "Prop \"" + keyInLowerCase + "\" is passed to component " +
	            (formatComponentName(tag || Ctor)) + ", but the declared prop name is" +
	            " \"" + key + "\". " +
	            "Note that HTML attributes are case-insensitive and camelCased " +
	            "props need to use their kebab-case equivalents when using in-DOM " +
	            "templates. You should probably use \"" + altKey + "\" instead of \"" + key + "\"."
	          );
	        }
	      }
	      checkProp(res, props, key, altKey, true) ||
	      checkProp(res, attrs, key, altKey, false);
	    }
	  }
	  return res
	}

	function checkProp (
	  res,
	  hash,
	  key,
	  altKey,
	  preserve
	) {
	  if (isDef(hash)) {
	    if (hasOwn(hash, key)) {
	      res[key] = hash[key];
	      if (!preserve) {
	        delete hash[key];
	      }
	      return true
	    } else if (hasOwn(hash, altKey)) {
	      res[key] = hash[altKey];
	      if (!preserve) {
	        delete hash[altKey];
	      }
	      return true
	    }
	  }
	  return false
	}

	/*  */

	// The template compiler attempts to minimize the need for normalization by
	// statically analyzing the template at compile time.
	//
	// For plain HTML markup, normalization can be completely skipped because the
	// generated render function is guaranteed to return Array<VNode>. There are
	// two cases where extra normalization is needed:

	// 1. When the children contains components - because a functional component
	// may return an Array instead of a single root. In this case, just a simple
	// normalization is needed - if any child is an Array, we flatten the whole
	// thing with Array.prototype.concat. It is guaranteed to be only 1-level deep
	// because functional components already normalize their own children.
	function simpleNormalizeChildren (children) {
	  for (var i = 0; i < children.length; i++) {
	    if (Array.isArray(children[i])) {
	      return Array.prototype.concat.apply([], children)
	    }
	  }
	  return children
	}

	// 2. When the children contains constructs that always generated nested Arrays,
	// e.g. <template>, <slot>, v-for, or when the children is provided by user
	// with hand-written render functions / JSX. In such cases a full normalization
	// is needed to cater to all possible types of children values.
	function normalizeChildren (children) {
	  return isPrimitive(children)
	    ? [createTextVNode(children)]
	    : Array.isArray(children)
	      ? normalizeArrayChildren(children)
	      : undefined
	}

	function isTextNode (node) {
	  return isDef(node) && isDef(node.text) && isFalse(node.isComment)
	}

	function normalizeArrayChildren (children, nestedIndex) {
	  var res = [];
	  var i, c, lastIndex, last;
	  for (i = 0; i < children.length; i++) {
	    c = children[i];
	    if (isUndef(c) || typeof c === 'boolean') { continue }
	    lastIndex = res.length - 1;
	    last = res[lastIndex];
	    //  nested
	    if (Array.isArray(c)) {
	      if (c.length > 0) {
	        c = normalizeArrayChildren(c, ((nestedIndex || '') + "_" + i));
	        // merge adjacent text nodes
	        if (isTextNode(c[0]) && isTextNode(last)) {
	          res[lastIndex] = createTextVNode(last.text + (c[0]).text);
	          c.shift();
	        }
	        res.push.apply(res, c);
	      }
	    } else if (isPrimitive(c)) {
	      if (isTextNode(last)) {
	        // merge adjacent text nodes
	        // this is necessary for SSR hydration because text nodes are
	        // essentially merged when rendered to HTML strings
	        res[lastIndex] = createTextVNode(last.text + c);
	      } else if (c !== '') {
	        // convert primitive to vnode
	        res.push(createTextVNode(c));
	      }
	    } else {
	      if (isTextNode(c) && isTextNode(last)) {
	        // merge adjacent text nodes
	        res[lastIndex] = createTextVNode(last.text + c.text);
	      } else {
	        // default key for nested array children (likely generated by v-for)
	        if (isTrue(children._isVList) &&
	          isDef(c.tag) &&
	          isUndef(c.key) &&
	          isDef(nestedIndex)) {
	          c.key = "__vlist" + nestedIndex + "_" + i + "__";
	        }
	        res.push(c);
	      }
	    }
	  }
	  return res
	}

	/*  */

	function initProvide (vm) {
	  var provide = vm.$options.provide;
	  if (provide) {
	    vm._provided = typeof provide === 'function'
	      ? provide.call(vm)
	      : provide;
	  }
	}

	function initInjections (vm) {
	  var result = resolveInject(vm.$options.inject, vm);
	  if (result) {
	    toggleObserving(false);
	    Object.keys(result).forEach(function (key) {
	      /* istanbul ignore else */
	      {
	        defineReactive$$1(vm, key, result[key], function () {
	          warn(
	            "Avoid mutating an injected value directly since the changes will be " +
	            "overwritten whenever the provided component re-renders. " +
	            "injection being mutated: \"" + key + "\"",
	            vm
	          );
	        });
	      }
	    });
	    toggleObserving(true);
	  }
	}

	function resolveInject (inject, vm) {
	  if (inject) {
	    // inject is :any because flow is not smart enough to figure out cached
	    var result = Object.create(null);
	    var keys = hasSymbol
	      ? Reflect.ownKeys(inject)
	      : Object.keys(inject);

	    for (var i = 0; i < keys.length; i++) {
	      var key = keys[i];
	      // #6574 in case the inject object is observed...
	      if (key === '__ob__') { continue }
	      var provideKey = inject[key].from;
	      var source = vm;
	      while (source) {
	        if (source._provided && hasOwn(source._provided, provideKey)) {
	          result[key] = source._provided[provideKey];
	          break
	        }
	        source = source.$parent;
	      }
	      if (!source) {
	        if ('default' in inject[key]) {
	          var provideDefault = inject[key].default;
	          result[key] = typeof provideDefault === 'function'
	            ? provideDefault.call(vm)
	            : provideDefault;
	        } else {
	          warn(("Injection \"" + key + "\" not found"), vm);
	        }
	      }
	    }
	    return result
	  }
	}

	/*  */



	/**
	 * Runtime helper for resolving raw children VNodes into a slot object.
	 */
	function resolveSlots (
	  children,
	  context
	) {
	  if (!children || !children.length) {
	    return {}
	  }
	  var slots = {};
	  for (var i = 0, l = children.length; i < l; i++) {
	    var child = children[i];
	    var data = child.data;
	    // remove slot attribute if the node is resolved as a Vue slot node
	    if (data && data.attrs && data.attrs.slot) {
	      delete data.attrs.slot;
	    }
	    // named slots should only be respected if the vnode was rendered in the
	    // same context.
	    if ((child.context === context || child.fnContext === context) &&
	      data && data.slot != null
	    ) {
	      var name = data.slot;
	      var slot = (slots[name] || (slots[name] = []));
	      if (child.tag === 'template') {
	        slot.push.apply(slot, child.children || []);
	      } else {
	        slot.push(child);
	      }
	    } else {
	      (slots.default || (slots.default = [])).push(child);
	    }
	  }
	  // ignore slots that contains only whitespace
	  for (var name$1 in slots) {
	    if (slots[name$1].every(isWhitespace)) {
	      delete slots[name$1];
	    }
	  }
	  return slots
	}

	function isWhitespace (node) {
	  return (node.isComment && !node.asyncFactory) || node.text === ' '
	}

	/*  */

	function normalizeScopedSlots (
	  slots,
	  normalSlots,
	  prevSlots
	) {
	  var res;
	  var hasNormalSlots = Object.keys(normalSlots).length > 0;
	  var isStable = slots ? !!slots.$stable : !hasNormalSlots;
	  var key = slots && slots.$key;
	  if (!slots) {
	    res = {};
	  } else if (slots._normalized) {
	    // fast path 1: child component re-render only, parent did not change
	    return slots._normalized
	  } else if (
	    isStable &&
	    prevSlots &&
	    prevSlots !== emptyObject &&
	    key === prevSlots.$key &&
	    !hasNormalSlots &&
	    !prevSlots.$hasNormal
	  ) {
	    // fast path 2: stable scoped slots w/ no normal slots to proxy,
	    // only need to normalize once
	    return prevSlots
	  } else {
	    res = {};
	    for (var key$1 in slots) {
	      if (slots[key$1] && key$1[0] !== '$') {
	        res[key$1] = normalizeScopedSlot(normalSlots, key$1, slots[key$1]);
	      }
	    }
	  }
	  // expose normal slots on scopedSlots
	  for (var key$2 in normalSlots) {
	    if (!(key$2 in res)) {
	      res[key$2] = proxyNormalSlot(normalSlots, key$2);
	    }
	  }
	  // avoriaz seems to mock a non-extensible $scopedSlots object
	  // and when that is passed down this would cause an error
	  if (slots && Object.isExtensible(slots)) {
	    (slots)._normalized = res;
	  }
	  def(res, '$stable', isStable);
	  def(res, '$key', key);
	  def(res, '$hasNormal', hasNormalSlots);
	  return res
	}

	function normalizeScopedSlot(normalSlots, key, fn) {
	  var normalized = function () {
	    var res = arguments.length ? fn.apply(null, arguments) : fn({});
	    res = res && typeof res === 'object' && !Array.isArray(res)
	      ? [res] // single vnode
	      : normalizeChildren(res);
	    return res && (
	      res.length === 0 ||
	      (res.length === 1 && res[0].isComment) // #9658
	    ) ? undefined
	      : res
	  };
	  // this is a slot using the new v-slot syntax without scope. although it is
	  // compiled as a scoped slot, render fn users would expect it to be present
	  // on this.$slots because the usage is semantically a normal slot.
	  if (fn.proxy) {
	    Object.defineProperty(normalSlots, key, {
	      get: normalized,
	      enumerable: true,
	      configurable: true
	    });
	  }
	  return normalized
	}

	function proxyNormalSlot(slots, key) {
	  return function () { return slots[key]; }
	}

	/*  */

	/**
	 * Runtime helper for rendering v-for lists.
	 */
	function renderList (
	  val,
	  render
	) {
	  var ret, i, l, keys, key;
	  if (Array.isArray(val) || typeof val === 'string') {
	    ret = new Array(val.length);
	    for (i = 0, l = val.length; i < l; i++) {
	      ret[i] = render(val[i], i);
	    }
	  } else if (typeof val === 'number') {
	    ret = new Array(val);
	    for (i = 0; i < val; i++) {
	      ret[i] = render(i + 1, i);
	    }
	  } else if (isObject$2(val)) {
	    if (hasSymbol && val[Symbol.iterator]) {
	      ret = [];
	      var iterator = val[Symbol.iterator]();
	      var result = iterator.next();
	      while (!result.done) {
	        ret.push(render(result.value, ret.length));
	        result = iterator.next();
	      }
	    } else {
	      keys = Object.keys(val);
	      ret = new Array(keys.length);
	      for (i = 0, l = keys.length; i < l; i++) {
	        key = keys[i];
	        ret[i] = render(val[key], key, i);
	      }
	    }
	  }
	  if (!isDef(ret)) {
	    ret = [];
	  }
	  (ret)._isVList = true;
	  return ret
	}

	/*  */

	/**
	 * Runtime helper for rendering <slot>
	 */
	function renderSlot (
	  name,
	  fallback,
	  props,
	  bindObject
	) {
	  var scopedSlotFn = this.$scopedSlots[name];
	  var nodes;
	  if (scopedSlotFn) { // scoped slot
	    props = props || {};
	    if (bindObject) {
	      if (!isObject$2(bindObject)) {
	        warn(
	          'slot v-bind without argument expects an Object',
	          this
	        );
	      }
	      props = extend(extend({}, bindObject), props);
	    }
	    nodes = scopedSlotFn(props) || fallback;
	  } else {
	    nodes = this.$slots[name] || fallback;
	  }

	  var target = props && props.slot;
	  if (target) {
	    return this.$createElement('template', { slot: target }, nodes)
	  } else {
	    return nodes
	  }
	}

	/*  */

	/**
	 * Runtime helper for resolving filters
	 */
	function resolveFilter (id) {
	  return resolveAsset(this.$options, 'filters', id, true) || identity$1
	}

	/*  */

	function isKeyNotMatch (expect, actual) {
	  if (Array.isArray(expect)) {
	    return expect.indexOf(actual) === -1
	  } else {
	    return expect !== actual
	  }
	}

	/**
	 * Runtime helper for checking keyCodes from config.
	 * exposed as Vue.prototype._k
	 * passing in eventKeyName as last argument separately for backwards compat
	 */
	function checkKeyCodes (
	  eventKeyCode,
	  key,
	  builtInKeyCode,
	  eventKeyName,
	  builtInKeyName
	) {
	  var mappedKeyCode = config.keyCodes[key] || builtInKeyCode;
	  if (builtInKeyName && eventKeyName && !config.keyCodes[key]) {
	    return isKeyNotMatch(builtInKeyName, eventKeyName)
	  } else if (mappedKeyCode) {
	    return isKeyNotMatch(mappedKeyCode, eventKeyCode)
	  } else if (eventKeyName) {
	    return hyphenate(eventKeyName) !== key
	  }
	}

	/*  */

	/**
	 * Runtime helper for merging v-bind="object" into a VNode's data.
	 */
	function bindObjectProps (
	  data,
	  tag,
	  value,
	  asProp,
	  isSync
	) {
	  if (value) {
	    if (!isObject$2(value)) {
	      warn(
	        'v-bind without argument expects an Object or Array value',
	        this
	      );
	    } else {
	      if (Array.isArray(value)) {
	        value = toObject$1(value);
	      }
	      var hash;
	      var loop = function ( key ) {
	        if (
	          key === 'class' ||
	          key === 'style' ||
	          isReservedAttribute(key)
	        ) {
	          hash = data;
	        } else {
	          var type = data.attrs && data.attrs.type;
	          hash = asProp || config.mustUseProp(tag, type, key)
	            ? data.domProps || (data.domProps = {})
	            : data.attrs || (data.attrs = {});
	        }
	        var camelizedKey = camelize(key);
	        var hyphenatedKey = hyphenate(key);
	        if (!(camelizedKey in hash) && !(hyphenatedKey in hash)) {
	          hash[key] = value[key];

	          if (isSync) {
	            var on = data.on || (data.on = {});
	            on[("update:" + key)] = function ($event) {
	              value[key] = $event;
	            };
	          }
	        }
	      };

	      for (var key in value) loop( key );
	    }
	  }
	  return data
	}

	/*  */

	/**
	 * Runtime helper for rendering static trees.
	 */
	function renderStatic (
	  index,
	  isInFor
	) {
	  var cached = this._staticTrees || (this._staticTrees = []);
	  var tree = cached[index];
	  // if has already-rendered static tree and not inside v-for,
	  // we can reuse the same tree.
	  if (tree && !isInFor) {
	    return tree
	  }
	  // otherwise, render a fresh tree.
	  tree = cached[index] = this.$options.staticRenderFns[index].call(
	    this._renderProxy,
	    null,
	    this // for render fns generated for functional component templates
	  );
	  markStatic(tree, ("__static__" + index), false);
	  return tree
	}

	/**
	 * Runtime helper for v-once.
	 * Effectively it means marking the node as static with a unique key.
	 */
	function markOnce (
	  tree,
	  index,
	  key
	) {
	  markStatic(tree, ("__once__" + index + (key ? ("_" + key) : "")), true);
	  return tree
	}

	function markStatic (
	  tree,
	  key,
	  isOnce
	) {
	  if (Array.isArray(tree)) {
	    for (var i = 0; i < tree.length; i++) {
	      if (tree[i] && typeof tree[i] !== 'string') {
	        markStaticNode(tree[i], (key + "_" + i), isOnce);
	      }
	    }
	  } else {
	    markStaticNode(tree, key, isOnce);
	  }
	}

	function markStaticNode (node, key, isOnce) {
	  node.isStatic = true;
	  node.key = key;
	  node.isOnce = isOnce;
	}

	/*  */

	function bindObjectListeners (data, value) {
	  if (value) {
	    if (!isPlainObject(value)) {
	      warn(
	        'v-on without argument expects an Object value',
	        this
	      );
	    } else {
	      var on = data.on = data.on ? extend({}, data.on) : {};
	      for (var key in value) {
	        var existing = on[key];
	        var ours = value[key];
	        on[key] = existing ? [].concat(existing, ours) : ours;
	      }
	    }
	  }
	  return data
	}

	/*  */

	function resolveScopedSlots (
	  fns, // see flow/vnode
	  res,
	  // the following are added in 2.6
	  hasDynamicKeys,
	  contentHashKey
	) {
	  res = res || { $stable: !hasDynamicKeys };
	  for (var i = 0; i < fns.length; i++) {
	    var slot = fns[i];
	    if (Array.isArray(slot)) {
	      resolveScopedSlots(slot, res, hasDynamicKeys);
	    } else if (slot) {
	      // marker for reverse proxying v-slot without scope on this.$slots
	      if (slot.proxy) {
	        slot.fn.proxy = true;
	      }
	      res[slot.key] = slot.fn;
	    }
	  }
	  if (contentHashKey) {
	    (res).$key = contentHashKey;
	  }
	  return res
	}

	/*  */

	function bindDynamicKeys (baseObj, values) {
	  for (var i = 0; i < values.length; i += 2) {
	    var key = values[i];
	    if (typeof key === 'string' && key) {
	      baseObj[values[i]] = values[i + 1];
	    } else if (key !== '' && key !== null) {
	      // null is a speical value for explicitly removing a binding
	      warn(
	        ("Invalid value for dynamic directive argument (expected string or null): " + key),
	        this
	      );
	    }
	  }
	  return baseObj
	}

	// helper to dynamically append modifier runtime markers to event names.
	// ensure only append when value is already string, otherwise it will be cast
	// to string and cause the type check to miss.
	function prependModifier (value, symbol) {
	  return typeof value === 'string' ? symbol + value : value
	}

	/*  */

	function installRenderHelpers (target) {
	  target._o = markOnce;
	  target._n = toNumber$1;
	  target._s = toString$2;
	  target._l = renderList;
	  target._t = renderSlot;
	  target._q = looseEqual;
	  target._i = looseIndexOf;
	  target._m = renderStatic;
	  target._f = resolveFilter;
	  target._k = checkKeyCodes;
	  target._b = bindObjectProps;
	  target._v = createTextVNode;
	  target._e = createEmptyVNode;
	  target._u = resolveScopedSlots;
	  target._g = bindObjectListeners;
	  target._d = bindDynamicKeys;
	  target._p = prependModifier;
	}

	/*  */

	function FunctionalRenderContext (
	  data,
	  props,
	  children,
	  parent,
	  Ctor
	) {
	  var this$1 = this;

	  var options = Ctor.options;
	  // ensure the createElement function in functional components
	  // gets a unique context - this is necessary for correct named slot check
	  var contextVm;
	  if (hasOwn(parent, '_uid')) {
	    contextVm = Object.create(parent);
	    // $flow-disable-line
	    contextVm._original = parent;
	  } else {
	    // the context vm passed in is a functional context as well.
	    // in this case we want to make sure we are able to get a hold to the
	    // real context instance.
	    contextVm = parent;
	    // $flow-disable-line
	    parent = parent._original;
	  }
	  var isCompiled = isTrue(options._compiled);
	  var needNormalization = !isCompiled;

	  this.data = data;
	  this.props = props;
	  this.children = children;
	  this.parent = parent;
	  this.listeners = data.on || emptyObject;
	  this.injections = resolveInject(options.inject, parent);
	  this.slots = function () {
	    if (!this$1.$slots) {
	      normalizeScopedSlots(
	        data.scopedSlots,
	        this$1.$slots = resolveSlots(children, parent)
	      );
	    }
	    return this$1.$slots
	  };

	  Object.defineProperty(this, 'scopedSlots', ({
	    enumerable: true,
	    get: function get () {
	      return normalizeScopedSlots(data.scopedSlots, this.slots())
	    }
	  }));

	  // support for compiled functional template
	  if (isCompiled) {
	    // exposing $options for renderStatic()
	    this.$options = options;
	    // pre-resolve slots for renderSlot()
	    this.$slots = this.slots();
	    this.$scopedSlots = normalizeScopedSlots(data.scopedSlots, this.$slots);
	  }

	  if (options._scopeId) {
	    this._c = function (a, b, c, d) {
	      var vnode = createElement(contextVm, a, b, c, d, needNormalization);
	      if (vnode && !Array.isArray(vnode)) {
	        vnode.fnScopeId = options._scopeId;
	        vnode.fnContext = parent;
	      }
	      return vnode
	    };
	  } else {
	    this._c = function (a, b, c, d) { return createElement(contextVm, a, b, c, d, needNormalization); };
	  }
	}

	installRenderHelpers(FunctionalRenderContext.prototype);

	function createFunctionalComponent (
	  Ctor,
	  propsData,
	  data,
	  contextVm,
	  children
	) {
	  var options = Ctor.options;
	  var props = {};
	  var propOptions = options.props;
	  if (isDef(propOptions)) {
	    for (var key in propOptions) {
	      props[key] = validateProp(key, propOptions, propsData || emptyObject);
	    }
	  } else {
	    if (isDef(data.attrs)) { mergeProps(props, data.attrs); }
	    if (isDef(data.props)) { mergeProps(props, data.props); }
	  }

	  var renderContext = new FunctionalRenderContext(
	    data,
	    props,
	    children,
	    contextVm,
	    Ctor
	  );

	  var vnode = options.render.call(null, renderContext._c, renderContext);

	  if (vnode instanceof VNode) {
	    return cloneAndMarkFunctionalResult(vnode, data, renderContext.parent, options, renderContext)
	  } else if (Array.isArray(vnode)) {
	    var vnodes = normalizeChildren(vnode) || [];
	    var res = new Array(vnodes.length);
	    for (var i = 0; i < vnodes.length; i++) {
	      res[i] = cloneAndMarkFunctionalResult(vnodes[i], data, renderContext.parent, options, renderContext);
	    }
	    return res
	  }
	}

	function cloneAndMarkFunctionalResult (vnode, data, contextVm, options, renderContext) {
	  // #7817 clone node before setting fnContext, otherwise if the node is reused
	  // (e.g. it was from a cached normal slot) the fnContext causes named slots
	  // that should not be matched to match.
	  var clone = cloneVNode(vnode);
	  clone.fnContext = contextVm;
	  clone.fnOptions = options;
	  {
	    (clone.devtoolsMeta = clone.devtoolsMeta || {}).renderContext = renderContext;
	  }
	  if (data.slot) {
	    (clone.data || (clone.data = {})).slot = data.slot;
	  }
	  return clone
	}

	function mergeProps (to, from) {
	  for (var key in from) {
	    to[camelize(key)] = from[key];
	  }
	}

	/*  */

	/*  */

	/*  */

	/*  */

	// inline hooks to be invoked on component VNodes during patch
	var componentVNodeHooks = {
	  init: function init (vnode, hydrating) {
	    if (
	      vnode.componentInstance &&
	      !vnode.componentInstance._isDestroyed &&
	      vnode.data.keepAlive
	    ) {
	      // kept-alive components, treat as a patch
	      var mountedNode = vnode; // work around flow
	      componentVNodeHooks.prepatch(mountedNode, mountedNode);
	    } else {
	      var child = vnode.componentInstance = createComponentInstanceForVnode(
	        vnode,
	        activeInstance
	      );
	      child.$mount(hydrating ? vnode.elm : undefined, hydrating);
	    }
	  },

	  prepatch: function prepatch (oldVnode, vnode) {
	    var options = vnode.componentOptions;
	    var child = vnode.componentInstance = oldVnode.componentInstance;
	    updateChildComponent(
	      child,
	      options.propsData, // updated props
	      options.listeners, // updated listeners
	      vnode, // new parent vnode
	      options.children // new children
	    );
	  },

	  insert: function insert (vnode) {
	    var context = vnode.context;
	    var componentInstance = vnode.componentInstance;
	    if (!componentInstance._isMounted) {
	      componentInstance._isMounted = true;
	      callHook(componentInstance, 'mounted');
	    }
	    if (vnode.data.keepAlive) {
	      if (context._isMounted) {
	        // vue-router#1212
	        // During updates, a kept-alive component's child components may
	        // change, so directly walking the tree here may call activated hooks
	        // on incorrect children. Instead we push them into a queue which will
	        // be processed after the whole patch process ended.
	        queueActivatedComponent(componentInstance);
	      } else {
	        activateChildComponent(componentInstance, true /* direct */);
	      }
	    }
	  },

	  destroy: function destroy (vnode) {
	    var componentInstance = vnode.componentInstance;
	    if (!componentInstance._isDestroyed) {
	      if (!vnode.data.keepAlive) {
	        componentInstance.$destroy();
	      } else {
	        deactivateChildComponent(componentInstance, true /* direct */);
	      }
	    }
	  }
	};

	var hooksToMerge = Object.keys(componentVNodeHooks);

	function createComponent (
	  Ctor,
	  data,
	  context,
	  children,
	  tag
	) {
	  if (isUndef(Ctor)) {
	    return
	  }

	  var baseCtor = context.$options._base;

	  // plain options object: turn it into a constructor
	  if (isObject$2(Ctor)) {
	    Ctor = baseCtor.extend(Ctor);
	  }

	  // if at this stage it's not a constructor or an async component factory,
	  // reject.
	  if (typeof Ctor !== 'function') {
	    {
	      warn(("Invalid Component definition: " + (String(Ctor))), context);
	    }
	    return
	  }

	  // async component
	  var asyncFactory;
	  if (isUndef(Ctor.cid)) {
	    asyncFactory = Ctor;
	    Ctor = resolveAsyncComponent(asyncFactory, baseCtor);
	    if (Ctor === undefined) {
	      // return a placeholder node for async component, which is rendered
	      // as a comment node but preserves all the raw information for the node.
	      // the information will be used for async server-rendering and hydration.
	      return createAsyncPlaceholder(
	        asyncFactory,
	        data,
	        context,
	        children,
	        tag
	      )
	    }
	  }

	  data = data || {};

	  // resolve constructor options in case global mixins are applied after
	  // component constructor creation
	  resolveConstructorOptions(Ctor);

	  // transform component v-model data into props & events
	  if (isDef(data.model)) {
	    transformModel(Ctor.options, data);
	  }

	  // extract props
	  var propsData = extractPropsFromVNodeData(data, Ctor, tag);

	  // functional component
	  if (isTrue(Ctor.options.functional)) {
	    return createFunctionalComponent(Ctor, propsData, data, context, children)
	  }

	  // extract listeners, since these needs to be treated as
	  // child component listeners instead of DOM listeners
	  var listeners = data.on;
	  // replace with listeners with .native modifier
	  // so it gets processed during parent component patch.
	  data.on = data.nativeOn;

	  if (isTrue(Ctor.options.abstract)) {
	    // abstract components do not keep anything
	    // other than props & listeners & slot

	    // work around flow
	    var slot = data.slot;
	    data = {};
	    if (slot) {
	      data.slot = slot;
	    }
	  }

	  // install component management hooks onto the placeholder node
	  installComponentHooks(data);

	  // return a placeholder vnode
	  var name = Ctor.options.name || tag;
	  var vnode = new VNode(
	    ("vue-component-" + (Ctor.cid) + (name ? ("-" + name) : '')),
	    data, undefined, undefined, undefined, context,
	    { Ctor: Ctor, propsData: propsData, listeners: listeners, tag: tag, children: children },
	    asyncFactory
	  );

	  return vnode
	}

	function createComponentInstanceForVnode (
	  vnode, // we know it's MountedComponentVNode but flow doesn't
	  parent // activeInstance in lifecycle state
	) {
	  var options = {
	    _isComponent: true,
	    _parentVnode: vnode,
	    parent: parent
	  };
	  // check inline-template render functions
	  var inlineTemplate = vnode.data.inlineTemplate;
	  if (isDef(inlineTemplate)) {
	    options.render = inlineTemplate.render;
	    options.staticRenderFns = inlineTemplate.staticRenderFns;
	  }
	  return new vnode.componentOptions.Ctor(options)
	}

	function installComponentHooks (data) {
	  var hooks = data.hook || (data.hook = {});
	  for (var i = 0; i < hooksToMerge.length; i++) {
	    var key = hooksToMerge[i];
	    var existing = hooks[key];
	    var toMerge = componentVNodeHooks[key];
	    if (existing !== toMerge && !(existing && existing._merged)) {
	      hooks[key] = existing ? mergeHook$1(toMerge, existing) : toMerge;
	    }
	  }
	}

	function mergeHook$1 (f1, f2) {
	  var merged = function (a, b) {
	    // flow complains about extra args which is why we use any
	    f1(a, b);
	    f2(a, b);
	  };
	  merged._merged = true;
	  return merged
	}

	// transform component v-model info (value and callback) into
	// prop and event handler respectively.
	function transformModel (options, data) {
	  var prop = (options.model && options.model.prop) || 'value';
	  var event = (options.model && options.model.event) || 'input'
	  ;(data.attrs || (data.attrs = {}))[prop] = data.model.value;
	  var on = data.on || (data.on = {});
	  var existing = on[event];
	  var callback = data.model.callback;
	  if (isDef(existing)) {
	    if (
	      Array.isArray(existing)
	        ? existing.indexOf(callback) === -1
	        : existing !== callback
	    ) {
	      on[event] = [callback].concat(existing);
	    }
	  } else {
	    on[event] = callback;
	  }
	}

	/*  */

	var SIMPLE_NORMALIZE = 1;
	var ALWAYS_NORMALIZE = 2;

	// wrapper function for providing a more flexible interface
	// without getting yelled at by flow
	function createElement (
	  context,
	  tag,
	  data,
	  children,
	  normalizationType,
	  alwaysNormalize
	) {
	  if (Array.isArray(data) || isPrimitive(data)) {
	    normalizationType = children;
	    children = data;
	    data = undefined;
	  }
	  if (isTrue(alwaysNormalize)) {
	    normalizationType = ALWAYS_NORMALIZE;
	  }
	  return _createElement(context, tag, data, children, normalizationType)
	}

	function _createElement (
	  context,
	  tag,
	  data,
	  children,
	  normalizationType
	) {
	  if (isDef(data) && isDef((data).__ob__)) {
	    warn(
	      "Avoid using observed data object as vnode data: " + (JSON.stringify(data)) + "\n" +
	      'Always create fresh vnode data objects in each render!',
	      context
	    );
	    return createEmptyVNode()
	  }
	  // object syntax in v-bind
	  if (isDef(data) && isDef(data.is)) {
	    tag = data.is;
	  }
	  if (!tag) {
	    // in case of component :is set to falsy value
	    return createEmptyVNode()
	  }
	  // warn against non-primitive key
	  if (isDef(data) && isDef(data.key) && !isPrimitive(data.key)
	  ) {
	    {
	      warn(
	        'Avoid using non-primitive value as key, ' +
	        'use string/number value instead.',
	        context
	      );
	    }
	  }
	  // support single function children as default scoped slot
	  if (Array.isArray(children) &&
	    typeof children[0] === 'function'
	  ) {
	    data = data || {};
	    data.scopedSlots = { default: children[0] };
	    children.length = 0;
	  }
	  if (normalizationType === ALWAYS_NORMALIZE) {
	    children = normalizeChildren(children);
	  } else if (normalizationType === SIMPLE_NORMALIZE) {
	    children = simpleNormalizeChildren(children);
	  }
	  var vnode, ns;
	  if (typeof tag === 'string') {
	    var Ctor;
	    ns = (context.$vnode && context.$vnode.ns) || config.getTagNamespace(tag);
	    if (config.isReservedTag(tag)) {
	      // platform built-in elements
	      vnode = new VNode(
	        config.parsePlatformTagName(tag), data, children,
	        undefined, undefined, context
	      );
	    } else if ((!data || !data.pre) && isDef(Ctor = resolveAsset(context.$options, 'components', tag))) {
	      // component
	      vnode = createComponent(Ctor, data, context, children, tag);
	    } else {
	      // unknown or unlisted namespaced elements
	      // check at runtime because it may get assigned a namespace when its
	      // parent normalizes children
	      vnode = new VNode(
	        tag, data, children,
	        undefined, undefined, context
	      );
	    }
	  } else {
	    // direct component options / constructor
	    vnode = createComponent(tag, data, context, children);
	  }
	  if (Array.isArray(vnode)) {
	    return vnode
	  } else if (isDef(vnode)) {
	    if (isDef(ns)) { applyNS(vnode, ns); }
	    if (isDef(data)) { registerDeepBindings(data); }
	    return vnode
	  } else {
	    return createEmptyVNode()
	  }
	}

	function applyNS (vnode, ns, force) {
	  vnode.ns = ns;
	  if (vnode.tag === 'foreignObject') {
	    // use default namespace inside foreignObject
	    ns = undefined;
	    force = true;
	  }
	  if (isDef(vnode.children)) {
	    for (var i = 0, l = vnode.children.length; i < l; i++) {
	      var child = vnode.children[i];
	      if (isDef(child.tag) && (
	        isUndef(child.ns) || (isTrue(force) && child.tag !== 'svg'))) {
	        applyNS(child, ns, force);
	      }
	    }
	  }
	}

	// ref #5318
	// necessary to ensure parent re-render when deep bindings like :style and
	// :class are used on slot nodes
	function registerDeepBindings (data) {
	  if (isObject$2(data.style)) {
	    traverse(data.style);
	  }
	  if (isObject$2(data.class)) {
	    traverse(data.class);
	  }
	}

	/*  */

	function initRender (vm) {
	  vm._vnode = null; // the root of the child tree
	  vm._staticTrees = null; // v-once cached trees
	  var options = vm.$options;
	  var parentVnode = vm.$vnode = options._parentVnode; // the placeholder node in parent tree
	  var renderContext = parentVnode && parentVnode.context;
	  vm.$slots = resolveSlots(options._renderChildren, renderContext);
	  vm.$scopedSlots = emptyObject;
	  // bind the createElement fn to this instance
	  // so that we get proper render context inside it.
	  // args order: tag, data, children, normalizationType, alwaysNormalize
	  // internal version is used by render functions compiled from templates
	  vm._c = function (a, b, c, d) { return createElement(vm, a, b, c, d, false); };
	  // normalization is always applied for the public version, used in
	  // user-written render functions.
	  vm.$createElement = function (a, b, c, d) { return createElement(vm, a, b, c, d, true); };

	  // $attrs & $listeners are exposed for easier HOC creation.
	  // they need to be reactive so that HOCs using them are always updated
	  var parentData = parentVnode && parentVnode.data;

	  /* istanbul ignore else */
	  {
	    defineReactive$$1(vm, '$attrs', parentData && parentData.attrs || emptyObject, function () {
	      !isUpdatingChildComponent && warn("$attrs is readonly.", vm);
	    }, true);
	    defineReactive$$1(vm, '$listeners', options._parentListeners || emptyObject, function () {
	      !isUpdatingChildComponent && warn("$listeners is readonly.", vm);
	    }, true);
	  }
	}

	var currentRenderingInstance = null;

	function renderMixin (Vue) {
	  // install runtime convenience helpers
	  installRenderHelpers(Vue.prototype);

	  Vue.prototype.$nextTick = function (fn) {
	    return nextTick(fn, this)
	  };

	  Vue.prototype._render = function () {
	    var vm = this;
	    var ref = vm.$options;
	    var render = ref.render;
	    var _parentVnode = ref._parentVnode;

	    if (_parentVnode) {
	      vm.$scopedSlots = normalizeScopedSlots(
	        _parentVnode.data.scopedSlots,
	        vm.$slots,
	        vm.$scopedSlots
	      );
	    }

	    // set parent vnode. this allows render functions to have access
	    // to the data on the placeholder node.
	    vm.$vnode = _parentVnode;
	    // render self
	    var vnode;
	    try {
	      // There's no need to maintain a stack becaues all render fns are called
	      // separately from one another. Nested component's render fns are called
	      // when parent component is patched.
	      currentRenderingInstance = vm;
	      vnode = render.call(vm._renderProxy, vm.$createElement);
	    } catch (e) {
	      handleError(e, vm, "render");
	      // return error render result,
	      // or previous vnode to prevent render error causing blank component
	      /* istanbul ignore else */
	      if (vm.$options.renderError) {
	        try {
	          vnode = vm.$options.renderError.call(vm._renderProxy, vm.$createElement, e);
	        } catch (e) {
	          handleError(e, vm, "renderError");
	          vnode = vm._vnode;
	        }
	      } else {
	        vnode = vm._vnode;
	      }
	    } finally {
	      currentRenderingInstance = null;
	    }
	    // if the returned array contains only a single node, allow it
	    if (Array.isArray(vnode) && vnode.length === 1) {
	      vnode = vnode[0];
	    }
	    // return empty vnode in case the render function errored out
	    if (!(vnode instanceof VNode)) {
	      if (Array.isArray(vnode)) {
	        warn(
	          'Multiple root nodes returned from render function. Render function ' +
	          'should return a single root node.',
	          vm
	        );
	      }
	      vnode = createEmptyVNode();
	    }
	    // set parent
	    vnode.parent = _parentVnode;
	    return vnode
	  };
	}

	/*  */

	function ensureCtor (comp, base) {
	  if (
	    comp.__esModule ||
	    (hasSymbol && comp[Symbol.toStringTag] === 'Module')
	  ) {
	    comp = comp.default;
	  }
	  return isObject$2(comp)
	    ? base.extend(comp)
	    : comp
	}

	function createAsyncPlaceholder (
	  factory,
	  data,
	  context,
	  children,
	  tag
	) {
	  var node = createEmptyVNode();
	  node.asyncFactory = factory;
	  node.asyncMeta = { data: data, context: context, children: children, tag: tag };
	  return node
	}

	function resolveAsyncComponent (
	  factory,
	  baseCtor
	) {
	  if (isTrue(factory.error) && isDef(factory.errorComp)) {
	    return factory.errorComp
	  }

	  if (isDef(factory.resolved)) {
	    return factory.resolved
	  }

	  var owner = currentRenderingInstance;
	  if (owner && isDef(factory.owners) && factory.owners.indexOf(owner) === -1) {
	    // already pending
	    factory.owners.push(owner);
	  }

	  if (isTrue(factory.loading) && isDef(factory.loadingComp)) {
	    return factory.loadingComp
	  }

	  if (owner && !isDef(factory.owners)) {
	    var owners = factory.owners = [owner];
	    var sync = true;
	    var timerLoading = null;
	    var timerTimeout = null

	    ;(owner).$on('hook:destroyed', function () { return remove(owners, owner); });

	    var forceRender = function (renderCompleted) {
	      for (var i = 0, l = owners.length; i < l; i++) {
	        (owners[i]).$forceUpdate();
	      }

	      if (renderCompleted) {
	        owners.length = 0;
	        if (timerLoading !== null) {
	          clearTimeout(timerLoading);
	          timerLoading = null;
	        }
	        if (timerTimeout !== null) {
	          clearTimeout(timerTimeout);
	          timerTimeout = null;
	        }
	      }
	    };

	    var resolve = once(function (res) {
	      // cache resolved
	      factory.resolved = ensureCtor(res, baseCtor);
	      // invoke callbacks only if this is not a synchronous resolve
	      // (async resolves are shimmed as synchronous during SSR)
	      if (!sync) {
	        forceRender(true);
	      } else {
	        owners.length = 0;
	      }
	    });

	    var reject = once(function (reason) {
	      warn(
	        "Failed to resolve async component: " + (String(factory)) +
	        (reason ? ("\nReason: " + reason) : '')
	      );
	      if (isDef(factory.errorComp)) {
	        factory.error = true;
	        forceRender(true);
	      }
	    });

	    var res = factory(resolve, reject);

	    if (isObject$2(res)) {
	      if (isPromise(res)) {
	        // () => Promise
	        if (isUndef(factory.resolved)) {
	          res.then(resolve, reject);
	        }
	      } else if (isPromise(res.component)) {
	        res.component.then(resolve, reject);

	        if (isDef(res.error)) {
	          factory.errorComp = ensureCtor(res.error, baseCtor);
	        }

	        if (isDef(res.loading)) {
	          factory.loadingComp = ensureCtor(res.loading, baseCtor);
	          if (res.delay === 0) {
	            factory.loading = true;
	          } else {
	            timerLoading = setTimeout(function () {
	              timerLoading = null;
	              if (isUndef(factory.resolved) && isUndef(factory.error)) {
	                factory.loading = true;
	                forceRender(false);
	              }
	            }, res.delay || 200);
	          }
	        }

	        if (isDef(res.timeout)) {
	          timerTimeout = setTimeout(function () {
	            timerTimeout = null;
	            if (isUndef(factory.resolved)) {
	              reject(
	                "timeout (" + (res.timeout) + "ms)"
	              );
	            }
	          }, res.timeout);
	        }
	      }
	    }

	    sync = false;
	    // return in case resolved synchronously
	    return factory.loading
	      ? factory.loadingComp
	      : factory.resolved
	  }
	}

	/*  */

	function isAsyncPlaceholder (node) {
	  return node.isComment && node.asyncFactory
	}

	/*  */

	function getFirstComponentChild (children) {
	  if (Array.isArray(children)) {
	    for (var i = 0; i < children.length; i++) {
	      var c = children[i];
	      if (isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) {
	        return c
	      }
	    }
	  }
	}

	/*  */

	/*  */

	function initEvents (vm) {
	  vm._events = Object.create(null);
	  vm._hasHookEvent = false;
	  // init parent attached events
	  var listeners = vm.$options._parentListeners;
	  if (listeners) {
	    updateComponentListeners(vm, listeners);
	  }
	}

	var target;

	function add (event, fn) {
	  target.$on(event, fn);
	}

	function remove$1 (event, fn) {
	  target.$off(event, fn);
	}

	function createOnceHandler (event, fn) {
	  var _target = target;
	  return function onceHandler () {
	    var res = fn.apply(null, arguments);
	    if (res !== null) {
	      _target.$off(event, onceHandler);
	    }
	  }
	}

	function updateComponentListeners (
	  vm,
	  listeners,
	  oldListeners
	) {
	  target = vm;
	  updateListeners(listeners, oldListeners || {}, add, remove$1, createOnceHandler, vm);
	  target = undefined;
	}

	function eventsMixin (Vue) {
	  var hookRE = /^hook:/;
	  Vue.prototype.$on = function (event, fn) {
	    var vm = this;
	    if (Array.isArray(event)) {
	      for (var i = 0, l = event.length; i < l; i++) {
	        vm.$on(event[i], fn);
	      }
	    } else {
	      (vm._events[event] || (vm._events[event] = [])).push(fn);
	      // optimize hook:event cost by using a boolean flag marked at registration
	      // instead of a hash lookup
	      if (hookRE.test(event)) {
	        vm._hasHookEvent = true;
	      }
	    }
	    return vm
	  };

	  Vue.prototype.$once = function (event, fn) {
	    var vm = this;
	    function on () {
	      vm.$off(event, on);
	      fn.apply(vm, arguments);
	    }
	    on.fn = fn;
	    vm.$on(event, on);
	    return vm
	  };

	  Vue.prototype.$off = function (event, fn) {
	    var vm = this;
	    // all
	    if (!arguments.length) {
	      vm._events = Object.create(null);
	      return vm
	    }
	    // array of events
	    if (Array.isArray(event)) {
	      for (var i$1 = 0, l = event.length; i$1 < l; i$1++) {
	        vm.$off(event[i$1], fn);
	      }
	      return vm
	    }
	    // specific event
	    var cbs = vm._events[event];
	    if (!cbs) {
	      return vm
	    }
	    if (!fn) {
	      vm._events[event] = null;
	      return vm
	    }
	    // specific handler
	    var cb;
	    var i = cbs.length;
	    while (i--) {
	      cb = cbs[i];
	      if (cb === fn || cb.fn === fn) {
	        cbs.splice(i, 1);
	        break
	      }
	    }
	    return vm
	  };

	  Vue.prototype.$emit = function (event) {
	    var vm = this;
	    {
	      var lowerCaseEvent = event.toLowerCase();
	      if (lowerCaseEvent !== event && vm._events[lowerCaseEvent]) {
	        tip(
	          "Event \"" + lowerCaseEvent + "\" is emitted in component " +
	          (formatComponentName(vm)) + " but the handler is registered for \"" + event + "\". " +
	          "Note that HTML attributes are case-insensitive and you cannot use " +
	          "v-on to listen to camelCase events when using in-DOM templates. " +
	          "You should probably use \"" + (hyphenate(event)) + "\" instead of \"" + event + "\"."
	        );
	      }
	    }
	    var cbs = vm._events[event];
	    if (cbs) {
	      cbs = cbs.length > 1 ? toArray(cbs) : cbs;
	      var args = toArray(arguments, 1);
	      var info = "event handler for \"" + event + "\"";
	      for (var i = 0, l = cbs.length; i < l; i++) {
	        invokeWithErrorHandling(cbs[i], vm, args, vm, info);
	      }
	    }
	    return vm
	  };
	}

	/*  */

	var activeInstance = null;
	var isUpdatingChildComponent = false;

	function setActiveInstance(vm) {
	  var prevActiveInstance = activeInstance;
	  activeInstance = vm;
	  return function () {
	    activeInstance = prevActiveInstance;
	  }
	}

	function initLifecycle (vm) {
	  var options = vm.$options;

	  // locate first non-abstract parent
	  var parent = options.parent;
	  if (parent && !options.abstract) {
	    while (parent.$options.abstract && parent.$parent) {
	      parent = parent.$parent;
	    }
	    parent.$children.push(vm);
	  }

	  vm.$parent = parent;
	  vm.$root = parent ? parent.$root : vm;

	  vm.$children = [];
	  vm.$refs = {};

	  vm._watcher = null;
	  vm._inactive = null;
	  vm._directInactive = false;
	  vm._isMounted = false;
	  vm._isDestroyed = false;
	  vm._isBeingDestroyed = false;
	}

	function lifecycleMixin (Vue) {
	  Vue.prototype._update = function (vnode, hydrating) {
	    var vm = this;
	    var prevEl = vm.$el;
	    var prevVnode = vm._vnode;
	    var restoreActiveInstance = setActiveInstance(vm);
	    vm._vnode = vnode;
	    // Vue.prototype.__patch__ is injected in entry points
	    // based on the rendering backend used.
	    if (!prevVnode) {
	      // initial render
	      vm.$el = vm.__patch__(vm.$el, vnode, hydrating, false /* removeOnly */);
	    } else {
	      // updates
	      vm.$el = vm.__patch__(prevVnode, vnode);
	    }
	    restoreActiveInstance();
	    // update __vue__ reference
	    if (prevEl) {
	      prevEl.__vue__ = null;
	    }
	    if (vm.$el) {
	      vm.$el.__vue__ = vm;
	    }
	    // if parent is an HOC, update its $el as well
	    if (vm.$vnode && vm.$parent && vm.$vnode === vm.$parent._vnode) {
	      vm.$parent.$el = vm.$el;
	    }
	    // updated hook is called by the scheduler to ensure that children are
	    // updated in a parent's updated hook.
	  };

	  Vue.prototype.$forceUpdate = function () {
	    var vm = this;
	    if (vm._watcher) {
	      vm._watcher.update();
	    }
	  };

	  Vue.prototype.$destroy = function () {
	    var vm = this;
	    if (vm._isBeingDestroyed) {
	      return
	    }
	    callHook(vm, 'beforeDestroy');
	    vm._isBeingDestroyed = true;
	    // remove self from parent
	    var parent = vm.$parent;
	    if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) {
	      remove(parent.$children, vm);
	    }
	    // teardown watchers
	    if (vm._watcher) {
	      vm._watcher.teardown();
	    }
	    var i = vm._watchers.length;
	    while (i--) {
	      vm._watchers[i].teardown();
	    }
	    // remove reference from data ob
	    // frozen object may not have observer.
	    if (vm._data.__ob__) {
	      vm._data.__ob__.vmCount--;
	    }
	    // call the last hook...
	    vm._isDestroyed = true;
	    // invoke destroy hooks on current rendered tree
	    vm.__patch__(vm._vnode, null);
	    // fire destroyed hook
	    callHook(vm, 'destroyed');
	    // turn off all instance listeners.
	    vm.$off();
	    // remove __vue__ reference
	    if (vm.$el) {
	      vm.$el.__vue__ = null;
	    }
	    // release circular reference (#6759)
	    if (vm.$vnode) {
	      vm.$vnode.parent = null;
	    }
	  };
	}

	function mountComponent (
	  vm,
	  el,
	  hydrating
	) {
	  vm.$el = el;
	  if (!vm.$options.render) {
	    vm.$options.render = createEmptyVNode;
	    {
	      /* istanbul ignore if */
	      if ((vm.$options.template && vm.$options.template.charAt(0) !== '#') ||
	        vm.$options.el || el) {
	        warn(
	          'You are using the runtime-only build of Vue where the template ' +
	          'compiler is not available. Either pre-compile the templates into ' +
	          'render functions, or use the compiler-included build.',
	          vm
	        );
	      } else {
	        warn(
	          'Failed to mount component: template or render function not defined.',
	          vm
	        );
	      }
	    }
	  }
	  callHook(vm, 'beforeMount');

	  var updateComponent;
	  /* istanbul ignore if */
	  if (config.performance && mark) {
	    updateComponent = function () {
	      var name = vm._name;
	      var id = vm._uid;
	      var startTag = "vue-perf-start:" + id;
	      var endTag = "vue-perf-end:" + id;

	      mark(startTag);
	      var vnode = vm._render();
	      mark(endTag);
	      measure(("vue " + name + " render"), startTag, endTag);

	      mark(startTag);
	      vm._update(vnode, hydrating);
	      mark(endTag);
	      measure(("vue " + name + " patch"), startTag, endTag);
	    };
	  } else {
	    updateComponent = function () {
	      vm._update(vm._render(), hydrating);
	    };
	  }

	  // we set this to vm._watcher inside the watcher's constructor
	  // since the watcher's initial patch may call $forceUpdate (e.g. inside child
	  // component's mounted hook), which relies on vm._watcher being already defined
	  new Watcher(vm, updateComponent, noop, {
	    before: function before () {
	      if (vm._isMounted && !vm._isDestroyed) {
	        callHook(vm, 'beforeUpdate');
	      }
	    }
	  }, true /* isRenderWatcher */);
	  hydrating = false;

	  // manually mounted instance, call mounted on self
	  // mounted is called for render-created child components in its inserted hook
	  if (vm.$vnode == null) {
	    vm._isMounted = true;
	    callHook(vm, 'mounted');
	  }
	  return vm
	}

	function updateChildComponent (
	  vm,
	  propsData,
	  listeners,
	  parentVnode,
	  renderChildren
	) {
	  {
	    isUpdatingChildComponent = true;
	  }

	  // determine whether component has slot children
	  // we need to do this before overwriting $options._renderChildren.

	  // check if there are dynamic scopedSlots (hand-written or compiled but with
	  // dynamic slot names). Static scoped slots compiled from template has the
	  // "$stable" marker.
	  var newScopedSlots = parentVnode.data.scopedSlots;
	  var oldScopedSlots = vm.$scopedSlots;
	  var hasDynamicScopedSlot = !!(
	    (newScopedSlots && !newScopedSlots.$stable) ||
	    (oldScopedSlots !== emptyObject && !oldScopedSlots.$stable) ||
	    (newScopedSlots && vm.$scopedSlots.$key !== newScopedSlots.$key)
	  );

	  // Any static slot children from the parent may have changed during parent's
	  // update. Dynamic scoped slots may also have changed. In such cases, a forced
	  // update is necessary to ensure correctness.
	  var needsForceUpdate = !!(
	    renderChildren ||               // has new static slots
	    vm.$options._renderChildren ||  // has old static slots
	    hasDynamicScopedSlot
	  );

	  vm.$options._parentVnode = parentVnode;
	  vm.$vnode = parentVnode; // update vm's placeholder node without re-render

	  if (vm._vnode) { // update child tree's parent
	    vm._vnode.parent = parentVnode;
	  }
	  vm.$options._renderChildren = renderChildren;

	  // update $attrs and $listeners hash
	  // these are also reactive so they may trigger child update if the child
	  // used them during render
	  vm.$attrs = parentVnode.data.attrs || emptyObject;
	  vm.$listeners = listeners || emptyObject;

	  // update props
	  if (propsData && vm.$options.props) {
	    toggleObserving(false);
	    var props = vm._props;
	    var propKeys = vm.$options._propKeys || [];
	    for (var i = 0; i < propKeys.length; i++) {
	      var key = propKeys[i];
	      var propOptions = vm.$options.props; // wtf flow?
	      props[key] = validateProp(key, propOptions, propsData, vm);
	    }
	    toggleObserving(true);
	    // keep a copy of raw propsData
	    vm.$options.propsData = propsData;
	  }

	  // update listeners
	  listeners = listeners || emptyObject;
	  var oldListeners = vm.$options._parentListeners;
	  vm.$options._parentListeners = listeners;
	  updateComponentListeners(vm, listeners, oldListeners);

	  // resolve slots + force update if has children
	  if (needsForceUpdate) {
	    vm.$slots = resolveSlots(renderChildren, parentVnode.context);
	    vm.$forceUpdate();
	  }

	  {
	    isUpdatingChildComponent = false;
	  }
	}

	function isInInactiveTree (vm) {
	  while (vm && (vm = vm.$parent)) {
	    if (vm._inactive) { return true }
	  }
	  return false
	}

	function activateChildComponent (vm, direct) {
	  if (direct) {
	    vm._directInactive = false;
	    if (isInInactiveTree(vm)) {
	      return
	    }
	  } else if (vm._directInactive) {
	    return
	  }
	  if (vm._inactive || vm._inactive === null) {
	    vm._inactive = false;
	    for (var i = 0; i < vm.$children.length; i++) {
	      activateChildComponent(vm.$children[i]);
	    }
	    callHook(vm, 'activated');
	  }
	}

	function deactivateChildComponent (vm, direct) {
	  if (direct) {
	    vm._directInactive = true;
	    if (isInInactiveTree(vm)) {
	      return
	    }
	  }
	  if (!vm._inactive) {
	    vm._inactive = true;
	    for (var i = 0; i < vm.$children.length; i++) {
	      deactivateChildComponent(vm.$children[i]);
	    }
	    callHook(vm, 'deactivated');
	  }
	}

	function callHook (vm, hook) {
	  // #7573 disable dep collection when invoking lifecycle hooks
	  pushTarget();
	  var handlers = vm.$options[hook];
	  var info = hook + " hook";
	  if (handlers) {
	    for (var i = 0, j = handlers.length; i < j; i++) {
	      invokeWithErrorHandling(handlers[i], vm, null, vm, info);
	    }
	  }
	  if (vm._hasHookEvent) {
	    vm.$emit('hook:' + hook);
	  }
	  popTarget();
	}

	/*  */

	var MAX_UPDATE_COUNT = 100;

	var queue$1 = [];
	var activatedChildren = [];
	var has$2 = {};
	var circular = {};
	var waiting = false;
	var flushing = false;
	var index$1 = 0;

	/**
	 * Reset the scheduler's state.
	 */
	function resetSchedulerState () {
	  index$1 = queue$1.length = activatedChildren.length = 0;
	  has$2 = {};
	  {
	    circular = {};
	  }
	  waiting = flushing = false;
	}

	// Async edge case #6566 requires saving the timestamp when event listeners are
	// attached. However, calling performance.now() has a perf overhead especially
	// if the page has thousands of event listeners. Instead, we take a timestamp
	// every time the scheduler flushes and use that for all event listeners
	// attached during that flush.
	var currentFlushTimestamp = 0;

	// Async edge case fix requires storing an event listener's attach timestamp.
	var getNow = Date.now;

	// Determine what event timestamp the browser is using. Annoyingly, the
	// timestamp can either be hi-res (relative to page load) or low-res
	// (relative to UNIX epoch), so in order to compare time we have to use the
	// same timestamp type when saving the flush timestamp.
	// All IE versions use low-res event timestamps, and have problematic clock
	// implementations (#9632)
	if (inBrowser && !isIE) {
	  var performance = window.performance;
	  if (
	    performance &&
	    typeof performance.now === 'function' &&
	    getNow() > document.createEvent('Event').timeStamp
	  ) {
	    // if the event timestamp, although evaluated AFTER the Date.now(), is
	    // smaller than it, it means the event is using a hi-res timestamp,
	    // and we need to use the hi-res version for event listener timestamps as
	    // well.
	    getNow = function () { return performance.now(); };
	  }
	}

	/**
	 * Flush both queues and run the watchers.
	 */
	function flushSchedulerQueue () {
	  currentFlushTimestamp = getNow();
	  flushing = true;
	  var watcher, id;

	  // Sort queue before flush.
	  // This ensures that:
	  // 1. Components are updated from parent to child. (because parent is always
	  //    created before the child)
	  // 2. A component's user watchers are run before its render watcher (because
	  //    user watchers are created before the render watcher)
	  // 3. If a component is destroyed during a parent component's watcher run,
	  //    its watchers can be skipped.
	  queue$1.sort(function (a, b) { return a.id - b.id; });

	  // do not cache length because more watchers might be pushed
	  // as we run existing watchers
	  for (index$1 = 0; index$1 < queue$1.length; index$1++) {
	    watcher = queue$1[index$1];
	    if (watcher.before) {
	      watcher.before();
	    }
	    id = watcher.id;
	    has$2[id] = null;
	    watcher.run();
	    // in dev build, check and stop circular updates.
	    if (has$2[id] != null) {
	      circular[id] = (circular[id] || 0) + 1;
	      if (circular[id] > MAX_UPDATE_COUNT) {
	        warn(
	          'You may have an infinite update loop ' + (
	            watcher.user
	              ? ("in watcher with expression \"" + (watcher.expression) + "\"")
	              : "in a component render function."
	          ),
	          watcher.vm
	        );
	        break
	      }
	    }
	  }

	  // keep copies of post queues before resetting state
	  var activatedQueue = activatedChildren.slice();
	  var updatedQueue = queue$1.slice();

	  resetSchedulerState();

	  // call component updated and activated hooks
	  callActivatedHooks(activatedQueue);
	  callUpdatedHooks(updatedQueue);

	  // devtool hook
	  /* istanbul ignore if */
	  if (devtools && config.devtools) {
	    devtools.emit('flush');
	  }
	}

	function callUpdatedHooks (queue) {
	  var i = queue.length;
	  while (i--) {
	    var watcher = queue[i];
	    var vm = watcher.vm;
	    if (vm._watcher === watcher && vm._isMounted && !vm._isDestroyed) {
	      callHook(vm, 'updated');
	    }
	  }
	}

	/**
	 * Queue a kept-alive component that was activated during patch.
	 * The queue will be processed after the entire tree has been patched.
	 */
	function queueActivatedComponent (vm) {
	  // setting _inactive to false here so that a render function can
	  // rely on checking whether it's in an inactive tree (e.g. router-view)
	  vm._inactive = false;
	  activatedChildren.push(vm);
	}

	function callActivatedHooks (queue) {
	  for (var i = 0; i < queue.length; i++) {
	    queue[i]._inactive = true;
	    activateChildComponent(queue[i], true /* true */);
	  }
	}

	/**
	 * Push a watcher into the watcher queue.
	 * Jobs with duplicate IDs will be skipped unless it's
	 * pushed when the queue is being flushed.
	 */
	function queueWatcher (watcher) {
	  var id = watcher.id;
	  if (has$2[id] == null) {
	    has$2[id] = true;
	    if (!flushing) {
	      queue$1.push(watcher);
	    } else {
	      // if already flushing, splice the watcher based on its id
	      // if already past its id, it will be run next immediately.
	      var i = queue$1.length - 1;
	      while (i > index$1 && queue$1[i].id > watcher.id) {
	        i--;
	      }
	      queue$1.splice(i + 1, 0, watcher);
	    }
	    // queue the flush
	    if (!waiting) {
	      waiting = true;

	      if (!config.async) {
	        flushSchedulerQueue();
	        return
	      }
	      nextTick(flushSchedulerQueue);
	    }
	  }
	}

	/*  */



	var uid$2 = 0;

	/**
	 * A watcher parses an expression, collects dependencies,
	 * and fires callback when the expression value changes.
	 * This is used for both the $watch() api and directives.
	 */
	var Watcher = function Watcher (
	  vm,
	  expOrFn,
	  cb,
	  options,
	  isRenderWatcher
	) {
	  this.vm = vm;
	  if (isRenderWatcher) {
	    vm._watcher = this;
	  }
	  vm._watchers.push(this);
	  // options
	  if (options) {
	    this.deep = !!options.deep;
	    this.user = !!options.user;
	    this.lazy = !!options.lazy;
	    this.sync = !!options.sync;
	    this.before = options.before;
	  } else {
	    this.deep = this.user = this.lazy = this.sync = false;
	  }
	  this.cb = cb;
	  this.id = ++uid$2; // uid for batching
	  this.active = true;
	  this.dirty = this.lazy; // for lazy watchers
	  this.deps = [];
	  this.newDeps = [];
	  this.depIds = new _Set();
	  this.newDepIds = new _Set();
	  this.expression = expOrFn.toString();
	  // parse expression for getter
	  if (typeof expOrFn === 'function') {
	    this.getter = expOrFn;
	  } else {
	    this.getter = parsePath(expOrFn);
	    if (!this.getter) {
	      this.getter = noop;
	      warn(
	        "Failed watching path: \"" + expOrFn + "\" " +
	        'Watcher only accepts simple dot-delimited paths. ' +
	        'For full control, use a function instead.',
	        vm
	      );
	    }
	  }
	  this.value = this.lazy
	    ? undefined
	    : this.get();
	};

	/**
	 * Evaluate the getter, and re-collect dependencies.
	 */
	Watcher.prototype.get = function get () {
	  pushTarget(this);
	  var value;
	  var vm = this.vm;
	  try {
	    value = this.getter.call(vm, vm);
	  } catch (e) {
	    if (this.user) {
	      handleError(e, vm, ("getter for watcher \"" + (this.expression) + "\""));
	    } else {
	      throw e
	    }
	  } finally {
	    // "touch" every property so they are all tracked as
	    // dependencies for deep watching
	    if (this.deep) {
	      traverse(value);
	    }
	    popTarget();
	    this.cleanupDeps();
	  }
	  return value
	};

	/**
	 * Add a dependency to this directive.
	 */
	Watcher.prototype.addDep = function addDep (dep) {
	  var id = dep.id;
	  if (!this.newDepIds.has(id)) {
	    this.newDepIds.add(id);
	    this.newDeps.push(dep);
	    if (!this.depIds.has(id)) {
	      dep.addSub(this);
	    }
	  }
	};

	/**
	 * Clean up for dependency collection.
	 */
	Watcher.prototype.cleanupDeps = function cleanupDeps () {
	  var i = this.deps.length;
	  while (i--) {
	    var dep = this.deps[i];
	    if (!this.newDepIds.has(dep.id)) {
	      dep.removeSub(this);
	    }
	  }
	  var tmp = this.depIds;
	  this.depIds = this.newDepIds;
	  this.newDepIds = tmp;
	  this.newDepIds.clear();
	  tmp = this.deps;
	  this.deps = this.newDeps;
	  this.newDeps = tmp;
	  this.newDeps.length = 0;
	};

	/**
	 * Subscriber interface.
	 * Will be called when a dependency changes.
	 */
	Watcher.prototype.update = function update () {
	  /* istanbul ignore else */
	  if (this.lazy) {
	    this.dirty = true;
	  } else if (this.sync) {
	    this.run();
	  } else {
	    queueWatcher(this);
	  }
	};

	/**
	 * Scheduler job interface.
	 * Will be called by the scheduler.
	 */
	Watcher.prototype.run = function run () {
	  if (this.active) {
	    var value = this.get();
	    if (
	      value !== this.value ||
	      // Deep watchers and watchers on Object/Arrays should fire even
	      // when the value is the same, because the value may
	      // have mutated.
	      isObject$2(value) ||
	      this.deep
	    ) {
	      // set new value
	      var oldValue = this.value;
	      this.value = value;
	      if (this.user) {
	        try {
	          this.cb.call(this.vm, value, oldValue);
	        } catch (e) {
	          handleError(e, this.vm, ("callback for watcher \"" + (this.expression) + "\""));
	        }
	      } else {
	        this.cb.call(this.vm, value, oldValue);
	      }
	    }
	  }
	};

	/**
	 * Evaluate the value of the watcher.
	 * This only gets called for lazy watchers.
	 */
	Watcher.prototype.evaluate = function evaluate () {
	  this.value = this.get();
	  this.dirty = false;
	};

	/**
	 * Depend on all deps collected by this watcher.
	 */
	Watcher.prototype.depend = function depend () {
	  var i = this.deps.length;
	  while (i--) {
	    this.deps[i].depend();
	  }
	};

	/**
	 * Remove self from all dependencies' subscriber list.
	 */
	Watcher.prototype.teardown = function teardown () {
	  if (this.active) {
	    // remove self from vm's watcher list
	    // this is a somewhat expensive operation so we skip it
	    // if the vm is being destroyed.
	    if (!this.vm._isBeingDestroyed) {
	      remove(this.vm._watchers, this);
	    }
	    var i = this.deps.length;
	    while (i--) {
	      this.deps[i].removeSub(this);
	    }
	    this.active = false;
	  }
	};

	/*  */

	var sharedPropertyDefinition = {
	  enumerable: true,
	  configurable: true,
	  get: noop,
	  set: noop
	};

	function proxy$1 (target, sourceKey, key) {
	  sharedPropertyDefinition.get = function proxyGetter () {
	    return this[sourceKey][key]
	  };
	  sharedPropertyDefinition.set = function proxySetter (val) {
	    this[sourceKey][key] = val;
	  };
	  Object.defineProperty(target, key, sharedPropertyDefinition);
	}

	function initState (vm) {
	  vm._watchers = [];
	  var opts = vm.$options;
	  if (opts.props) { initProps(vm, opts.props); }
	  if (opts.methods) { initMethods(vm, opts.methods); }
	  if (opts.data) {
	    initData(vm);
	  } else {
	    observe(vm._data = {}, true /* asRootData */);
	  }
	  if (opts.computed) { initComputed(vm, opts.computed); }
	  if (opts.watch && opts.watch !== nativeWatch) {
	    initWatch(vm, opts.watch);
	  }
	}

	function initProps (vm, propsOptions) {
	  var propsData = vm.$options.propsData || {};
	  var props = vm._props = {};
	  // cache prop keys so that future props updates can iterate using Array
	  // instead of dynamic object key enumeration.
	  var keys = vm.$options._propKeys = [];
	  var isRoot = !vm.$parent;
	  // root instance props should be converted
	  if (!isRoot) {
	    toggleObserving(false);
	  }
	  var loop = function ( key ) {
	    keys.push(key);
	    var value = validateProp(key, propsOptions, propsData, vm);
	    /* istanbul ignore else */
	    {
	      var hyphenatedKey = hyphenate(key);
	      if (isReservedAttribute(hyphenatedKey) ||
	          config.isReservedAttr(hyphenatedKey)) {
	        warn(
	          ("\"" + hyphenatedKey + "\" is a reserved attribute and cannot be used as component prop."),
	          vm
	        );
	      }
	      defineReactive$$1(props, key, value, function () {
	        if (!isRoot && !isUpdatingChildComponent) {
	          warn(
	            "Avoid mutating a prop directly since the value will be " +
	            "overwritten whenever the parent component re-renders. " +
	            "Instead, use a data or computed property based on the prop's " +
	            "value. Prop being mutated: \"" + key + "\"",
	            vm
	          );
	        }
	      });
	    }
	    // static props are already proxied on the component's prototype
	    // during Vue.extend(). We only need to proxy props defined at
	    // instantiation here.
	    if (!(key in vm)) {
	      proxy$1(vm, "_props", key);
	    }
	  };

	  for (var key in propsOptions) loop( key );
	  toggleObserving(true);
	}

	function initData (vm) {
	  var data = vm.$options.data;
	  data = vm._data = typeof data === 'function'
	    ? getData(data, vm)
	    : data || {};
	  if (!isPlainObject(data)) {
	    data = {};
	    warn(
	      'data functions should return an object:\n' +
	      'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function',
	      vm
	    );
	  }
	  // proxy data on instance
	  var keys = Object.keys(data);
	  var props = vm.$options.props;
	  var methods = vm.$options.methods;
	  var i = keys.length;
	  while (i--) {
	    var key = keys[i];
	    {
	      if (methods && hasOwn(methods, key)) {
	        warn(
	          ("Method \"" + key + "\" has already been defined as a data property."),
	          vm
	        );
	      }
	    }
	    if (props && hasOwn(props, key)) {
	      warn(
	        "The data property \"" + key + "\" is already declared as a prop. " +
	        "Use prop default value instead.",
	        vm
	      );
	    } else if (!isReserved(key)) {
	      proxy$1(vm, "_data", key);
	    }
	  }
	  // observe data
	  observe(data, true /* asRootData */);
	}

	function getData (data, vm) {
	  // #7573 disable dep collection when invoking data getters
	  pushTarget();
	  try {
	    return data.call(vm, vm)
	  } catch (e) {
	    handleError(e, vm, "data()");
	    return {}
	  } finally {
	    popTarget();
	  }
	}

	var computedWatcherOptions = { lazy: true };

	function initComputed (vm, computed) {
	  // $flow-disable-line
	  var watchers = vm._computedWatchers = Object.create(null);
	  // computed properties are just getters during SSR
	  var isSSR = isServerRendering();

	  for (var key in computed) {
	    var userDef = computed[key];
	    var getter = typeof userDef === 'function' ? userDef : userDef.get;
	    if (getter == null) {
	      warn(
	        ("Getter is missing for computed property \"" + key + "\"."),
	        vm
	      );
	    }

	    if (!isSSR) {
	      // create internal watcher for the computed property.
	      watchers[key] = new Watcher(
	        vm,
	        getter || noop,
	        noop,
	        computedWatcherOptions
	      );
	    }

	    // component-defined computed properties are already defined on the
	    // component prototype. We only need to define computed properties defined
	    // at instantiation here.
	    if (!(key in vm)) {
	      defineComputed(vm, key, userDef);
	    } else {
	      if (key in vm.$data) {
	        warn(("The computed property \"" + key + "\" is already defined in data."), vm);
	      } else if (vm.$options.props && key in vm.$options.props) {
	        warn(("The computed property \"" + key + "\" is already defined as a prop."), vm);
	      }
	    }
	  }
	}

	function defineComputed (
	  target,
	  key,
	  userDef
	) {
	  var shouldCache = !isServerRendering();
	  if (typeof userDef === 'function') {
	    sharedPropertyDefinition.get = shouldCache
	      ? createComputedGetter(key)
	      : createGetterInvoker(userDef);
	    sharedPropertyDefinition.set = noop;
	  } else {
	    sharedPropertyDefinition.get = userDef.get
	      ? shouldCache && userDef.cache !== false
	        ? createComputedGetter(key)
	        : createGetterInvoker(userDef.get)
	      : noop;
	    sharedPropertyDefinition.set = userDef.set || noop;
	  }
	  if (sharedPropertyDefinition.set === noop) {
	    sharedPropertyDefinition.set = function () {
	      warn(
	        ("Computed property \"" + key + "\" was assigned to but it has no setter."),
	        this
	      );
	    };
	  }
	  Object.defineProperty(target, key, sharedPropertyDefinition);
	}

	function createComputedGetter (key) {
	  return function computedGetter () {
	    var watcher = this._computedWatchers && this._computedWatchers[key];
	    if (watcher) {
	      if (watcher.dirty) {
	        watcher.evaluate();
	      }
	      if (Dep.target) {
	        watcher.depend();
	      }
	      return watcher.value
	    }
	  }
	}

	function createGetterInvoker(fn) {
	  return function computedGetter () {
	    return fn.call(this, this)
	  }
	}

	function initMethods (vm, methods) {
	  var props = vm.$options.props;
	  for (var key in methods) {
	    {
	      if (typeof methods[key] !== 'function') {
	        warn(
	          "Method \"" + key + "\" has type \"" + (typeof methods[key]) + "\" in the component definition. " +
	          "Did you reference the function correctly?",
	          vm
	        );
	      }
	      if (props && hasOwn(props, key)) {
	        warn(
	          ("Method \"" + key + "\" has already been defined as a prop."),
	          vm
	        );
	      }
	      if ((key in vm) && isReserved(key)) {
	        warn(
	          "Method \"" + key + "\" conflicts with an existing Vue instance method. " +
	          "Avoid defining component methods that start with _ or $."
	        );
	      }
	    }
	    vm[key] = typeof methods[key] !== 'function' ? noop : bind$1(methods[key], vm);
	  }
	}

	function initWatch (vm, watch) {
	  for (var key in watch) {
	    var handler = watch[key];
	    if (Array.isArray(handler)) {
	      for (var i = 0; i < handler.length; i++) {
	        createWatcher(vm, key, handler[i]);
	      }
	    } else {
	      createWatcher(vm, key, handler);
	    }
	  }
	}

	function createWatcher (
	  vm,
	  expOrFn,
	  handler,
	  options
	) {
	  if (isPlainObject(handler)) {
	    options = handler;
	    handler = handler.handler;
	  }
	  if (typeof handler === 'string') {
	    handler = vm[handler];
	  }
	  return vm.$watch(expOrFn, handler, options)
	}

	function stateMixin (Vue) {
	  // flow somehow has problems with directly declared definition object
	  // when using Object.defineProperty, so we have to procedurally build up
	  // the object here.
	  var dataDef = {};
	  dataDef.get = function () { return this._data };
	  var propsDef = {};
	  propsDef.get = function () { return this._props };
	  {
	    dataDef.set = function () {
	      warn(
	        'Avoid replacing instance root $data. ' +
	        'Use nested data properties instead.',
	        this
	      );
	    };
	    propsDef.set = function () {
	      warn("$props is readonly.", this);
	    };
	  }
	  Object.defineProperty(Vue.prototype, '$data', dataDef);
	  Object.defineProperty(Vue.prototype, '$props', propsDef);

	  Vue.prototype.$set = set$3;
	  Vue.prototype.$delete = del;

	  Vue.prototype.$watch = function (
	    expOrFn,
	    cb,
	    options
	  ) {
	    var vm = this;
	    if (isPlainObject(cb)) {
	      return createWatcher(vm, expOrFn, cb, options)
	    }
	    options = options || {};
	    options.user = true;
	    var watcher = new Watcher(vm, expOrFn, cb, options);
	    if (options.immediate) {
	      try {
	        cb.call(vm, watcher.value);
	      } catch (error) {
	        handleError(error, vm, ("callback for immediate watcher \"" + (watcher.expression) + "\""));
	      }
	    }
	    return function unwatchFn () {
	      watcher.teardown();
	    }
	  };
	}

	/*  */

	var uid$3 = 0;

	function initMixin (Vue) {
	  Vue.prototype._init = function (options) {
	    var vm = this;
	    // a uid
	    vm._uid = uid$3++;

	    var startTag, endTag;
	    /* istanbul ignore if */
	    if (config.performance && mark) {
	      startTag = "vue-perf-start:" + (vm._uid);
	      endTag = "vue-perf-end:" + (vm._uid);
	      mark(startTag);
	    }

	    // a flag to avoid this being observed
	    vm._isVue = true;
	    // merge options
	    if (options && options._isComponent) {
	      // optimize internal component instantiation
	      // since dynamic options merging is pretty slow, and none of the
	      // internal component options needs special treatment.
	      initInternalComponent(vm, options);
	    } else {
	      vm.$options = mergeOptions(
	        resolveConstructorOptions(vm.constructor),
	        options || {},
	        vm
	      );
	    }
	    /* istanbul ignore else */
	    {
	      initProxy(vm);
	    }
	    // expose real self
	    vm._self = vm;
	    initLifecycle(vm);
	    initEvents(vm);
	    initRender(vm);
	    callHook(vm, 'beforeCreate');
	    initInjections(vm); // resolve injections before data/props
	    initState(vm);
	    initProvide(vm); // resolve provide after data/props
	    callHook(vm, 'created');

	    /* istanbul ignore if */
	    if (config.performance && mark) {
	      vm._name = formatComponentName(vm, false);
	      mark(endTag);
	      measure(("vue " + (vm._name) + " init"), startTag, endTag);
	    }

	    if (vm.$options.el) {
	      vm.$mount(vm.$options.el);
	    }
	  };
	}

	function initInternalComponent (vm, options) {
	  var opts = vm.$options = Object.create(vm.constructor.options);
	  // doing this because it's faster than dynamic enumeration.
	  var parentVnode = options._parentVnode;
	  opts.parent = options.parent;
	  opts._parentVnode = parentVnode;

	  var vnodeComponentOptions = parentVnode.componentOptions;
	  opts.propsData = vnodeComponentOptions.propsData;
	  opts._parentListeners = vnodeComponentOptions.listeners;
	  opts._renderChildren = vnodeComponentOptions.children;
	  opts._componentTag = vnodeComponentOptions.tag;

	  if (options.render) {
	    opts.render = options.render;
	    opts.staticRenderFns = options.staticRenderFns;
	  }
	}

	function resolveConstructorOptions (Ctor) {
	  var options = Ctor.options;
	  if (Ctor.super) {
	    var superOptions = resolveConstructorOptions(Ctor.super);
	    var cachedSuperOptions = Ctor.superOptions;
	    if (superOptions !== cachedSuperOptions) {
	      // super option changed,
	      // need to resolve new options.
	      Ctor.superOptions = superOptions;
	      // check if there are any late-modified/attached options (#4976)
	      var modifiedOptions = resolveModifiedOptions(Ctor);
	      // update base extend options
	      if (modifiedOptions) {
	        extend(Ctor.extendOptions, modifiedOptions);
	      }
	      options = Ctor.options = mergeOptions(superOptions, Ctor.extendOptions);
	      if (options.name) {
	        options.components[options.name] = Ctor;
	      }
	    }
	  }
	  return options
	}

	function resolveModifiedOptions (Ctor) {
	  var modified;
	  var latest = Ctor.options;
	  var sealed = Ctor.sealedOptions;
	  for (var key in latest) {
	    if (latest[key] !== sealed[key]) {
	      if (!modified) { modified = {}; }
	      modified[key] = latest[key];
	    }
	  }
	  return modified
	}

	function Vue (options) {
	  if (!(this instanceof Vue)
	  ) {
	    warn('Vue is a constructor and should be called with the `new` keyword');
	  }
	  this._init(options);
	}

	initMixin(Vue);
	stateMixin(Vue);
	eventsMixin(Vue);
	lifecycleMixin(Vue);
	renderMixin(Vue);

	/*  */

	function initUse (Vue) {
	  Vue.use = function (plugin) {
	    var installedPlugins = (this._installedPlugins || (this._installedPlugins = []));
	    if (installedPlugins.indexOf(plugin) > -1) {
	      return this
	    }

	    // additional parameters
	    var args = toArray(arguments, 1);
	    args.unshift(this);
	    if (typeof plugin.install === 'function') {
	      plugin.install.apply(plugin, args);
	    } else if (typeof plugin === 'function') {
	      plugin.apply(null, args);
	    }
	    installedPlugins.push(plugin);
	    return this
	  };
	}

	/*  */

	function initMixin$1 (Vue) {
	  Vue.mixin = function (mixin) {
	    this.options = mergeOptions(this.options, mixin);
	    return this
	  };
	}

	/*  */

	function initExtend (Vue) {
	  /**
	   * Each instance constructor, including Vue, has a unique
	   * cid. This enables us to create wrapped "child
	   * constructors" for prototypal inheritance and cache them.
	   */
	  Vue.cid = 0;
	  var cid = 1;

	  /**
	   * Class inheritance
	   */
	  Vue.extend = function (extendOptions) {
	    extendOptions = extendOptions || {};
	    var Super = this;
	    var SuperId = Super.cid;
	    var cachedCtors = extendOptions._Ctor || (extendOptions._Ctor = {});
	    if (cachedCtors[SuperId]) {
	      return cachedCtors[SuperId]
	    }

	    var name = extendOptions.name || Super.options.name;
	    if (name) {
	      validateComponentName(name);
	    }

	    var Sub = function VueComponent (options) {
	      this._init(options);
	    };
	    Sub.prototype = Object.create(Super.prototype);
	    Sub.prototype.constructor = Sub;
	    Sub.cid = cid++;
	    Sub.options = mergeOptions(
	      Super.options,
	      extendOptions
	    );
	    Sub['super'] = Super;

	    // For props and computed properties, we define the proxy getters on
	    // the Vue instances at extension time, on the extended prototype. This
	    // avoids Object.defineProperty calls for each instance created.
	    if (Sub.options.props) {
	      initProps$1(Sub);
	    }
	    if (Sub.options.computed) {
	      initComputed$1(Sub);
	    }

	    // allow further extension/mixin/plugin usage
	    Sub.extend = Super.extend;
	    Sub.mixin = Super.mixin;
	    Sub.use = Super.use;

	    // create asset registers, so extended classes
	    // can have their private assets too.
	    ASSET_TYPES.forEach(function (type) {
	      Sub[type] = Super[type];
	    });
	    // enable recursive self-lookup
	    if (name) {
	      Sub.options.components[name] = Sub;
	    }

	    // keep a reference to the super options at extension time.
	    // later at instantiation we can check if Super's options have
	    // been updated.
	    Sub.superOptions = Super.options;
	    Sub.extendOptions = extendOptions;
	    Sub.sealedOptions = extend({}, Sub.options);

	    // cache constructor
	    cachedCtors[SuperId] = Sub;
	    return Sub
	  };
	}

	function initProps$1 (Comp) {
	  var props = Comp.options.props;
	  for (var key in props) {
	    proxy$1(Comp.prototype, "_props", key);
	  }
	}

	function initComputed$1 (Comp) {
	  var computed = Comp.options.computed;
	  for (var key in computed) {
	    defineComputed(Comp.prototype, key, computed[key]);
	  }
	}

	/*  */

	function initAssetRegisters (Vue) {
	  /**
	   * Create asset registration methods.
	   */
	  ASSET_TYPES.forEach(function (type) {
	    Vue[type] = function (
	      id,
	      definition
	    ) {
	      if (!definition) {
	        return this.options[type + 's'][id]
	      } else {
	        /* istanbul ignore if */
	        if (type === 'component') {
	          validateComponentName(id);
	        }
	        if (type === 'component' && isPlainObject(definition)) {
	          definition.name = definition.name || id;
	          definition = this.options._base.extend(definition);
	        }
	        if (type === 'directive' && typeof definition === 'function') {
	          definition = { bind: definition, update: definition };
	        }
	        this.options[type + 's'][id] = definition;
	        return definition
	      }
	    };
	  });
	}

	/*  */



	function getComponentName (opts) {
	  return opts && (opts.Ctor.options.name || opts.tag)
	}

	function matches (pattern, name) {
	  if (Array.isArray(pattern)) {
	    return pattern.indexOf(name) > -1
	  } else if (typeof pattern === 'string') {
	    return pattern.split(',').indexOf(name) > -1
	  } else if (isRegExp(pattern)) {
	    return pattern.test(name)
	  }
	  /* istanbul ignore next */
	  return false
	}

	function pruneCache (keepAliveInstance, filter) {
	  var cache = keepAliveInstance.cache;
	  var keys = keepAliveInstance.keys;
	  var _vnode = keepAliveInstance._vnode;
	  for (var key in cache) {
	    var cachedNode = cache[key];
	    if (cachedNode) {
	      var name = getComponentName(cachedNode.componentOptions);
	      if (name && !filter(name)) {
	        pruneCacheEntry(cache, key, keys, _vnode);
	      }
	    }
	  }
	}

	function pruneCacheEntry (
	  cache,
	  key,
	  keys,
	  current
	) {
	  var cached$$1 = cache[key];
	  if (cached$$1 && (!current || cached$$1.tag !== current.tag)) {
	    cached$$1.componentInstance.$destroy();
	  }
	  cache[key] = null;
	  remove(keys, key);
	}

	var patternTypes = [String, RegExp, Array];

	var KeepAlive = {
	  name: 'keep-alive',
	  abstract: true,

	  props: {
	    include: patternTypes,
	    exclude: patternTypes,
	    max: [String, Number]
	  },

	  created: function created () {
	    this.cache = Object.create(null);
	    this.keys = [];
	  },

	  destroyed: function destroyed () {
	    for (var key in this.cache) {
	      pruneCacheEntry(this.cache, key, this.keys);
	    }
	  },

	  mounted: function mounted () {
	    var this$1 = this;

	    this.$watch('include', function (val) {
	      pruneCache(this$1, function (name) { return matches(val, name); });
	    });
	    this.$watch('exclude', function (val) {
	      pruneCache(this$1, function (name) { return !matches(val, name); });
	    });
	  },

	  render: function render () {
	    var slot = this.$slots.default;
	    var vnode = getFirstComponentChild(slot);
	    var componentOptions = vnode && vnode.componentOptions;
	    if (componentOptions) {
	      // check pattern
	      var name = getComponentName(componentOptions);
	      var ref = this;
	      var include = ref.include;
	      var exclude = ref.exclude;
	      if (
	        // not included
	        (include && (!name || !matches(include, name))) ||
	        // excluded
	        (exclude && name && matches(exclude, name))
	      ) {
	        return vnode
	      }

	      var ref$1 = this;
	      var cache = ref$1.cache;
	      var keys = ref$1.keys;
	      var key = vnode.key == null
	        // same constructor may get registered as different local components
	        // so cid alone is not enough (#3269)
	        ? componentOptions.Ctor.cid + (componentOptions.tag ? ("::" + (componentOptions.tag)) : '')
	        : vnode.key;
	      if (cache[key]) {
	        vnode.componentInstance = cache[key].componentInstance;
	        // make current key freshest
	        remove(keys, key);
	        keys.push(key);
	      } else {
	        cache[key] = vnode;
	        keys.push(key);
	        // prune oldest entry
	        if (this.max && keys.length > parseInt(this.max)) {
	          pruneCacheEntry(cache, keys[0], keys, this._vnode);
	        }
	      }

	      vnode.data.keepAlive = true;
	    }
	    return vnode || (slot && slot[0])
	  }
	};

	var builtInComponents = {
	  KeepAlive: KeepAlive
	};

	/*  */

	function initGlobalAPI (Vue) {
	  // config
	  var configDef = {};
	  configDef.get = function () { return config; };
	  {
	    configDef.set = function () {
	      warn(
	        'Do not replace the Vue.config object, set individual fields instead.'
	      );
	    };
	  }
	  Object.defineProperty(Vue, 'config', configDef);

	  // exposed util methods.
	  // NOTE: these are not considered part of the public API - avoid relying on
	  // them unless you are aware of the risk.
	  Vue.util = {
	    warn: warn,
	    extend: extend,
	    mergeOptions: mergeOptions,
	    defineReactive: defineReactive$$1
	  };

	  Vue.set = set$3;
	  Vue.delete = del;
	  Vue.nextTick = nextTick;

	  // 2.6 explicit observable API
	  Vue.observable = function (obj) {
	    observe(obj);
	    return obj
	  };

	  Vue.options = Object.create(null);
	  ASSET_TYPES.forEach(function (type) {
	    Vue.options[type + 's'] = Object.create(null);
	  });

	  // this is used to identify the "base" constructor to extend all plain-object
	  // components with in Weex's multi-instance scenarios.
	  Vue.options._base = Vue;

	  extend(Vue.options.components, builtInComponents);

	  initUse(Vue);
	  initMixin$1(Vue);
	  initExtend(Vue);
	  initAssetRegisters(Vue);
	}

	initGlobalAPI(Vue);

	Object.defineProperty(Vue.prototype, '$isServer', {
	  get: isServerRendering
	});

	Object.defineProperty(Vue.prototype, '$ssrContext', {
	  get: function get () {
	    /* istanbul ignore next */
	    return this.$vnode && this.$vnode.ssrContext
	  }
	});

	// expose FunctionalRenderContext for ssr runtime helper installation
	Object.defineProperty(Vue, 'FunctionalRenderContext', {
	  value: FunctionalRenderContext
	});

	Vue.version = '2.6.10';

	/*  */

	// these are reserved for web because they are directly compiled away
	// during template compilation
	var isReservedAttr = makeMap('style,class');

	// attributes that should be using props for binding
	var acceptValue = makeMap('input,textarea,option,select,progress');
	var mustUseProp = function (tag, type, attr) {
	  return (
	    (attr === 'value' && acceptValue(tag)) && type !== 'button' ||
	    (attr === 'selected' && tag === 'option') ||
	    (attr === 'checked' && tag === 'input') ||
	    (attr === 'muted' && tag === 'video')
	  )
	};

	var isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck');

	var isValidContentEditableValue = makeMap('events,caret,typing,plaintext-only');

	var convertEnumeratedValue = function (key, value) {
	  return isFalsyAttrValue(value) || value === 'false'
	    ? 'false'
	    // allow arbitrary string value for contenteditable
	    : key === 'contenteditable' && isValidContentEditableValue(value)
	      ? value
	      : 'true'
	};

	var isBooleanAttr = makeMap(
	  'allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' +
	  'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' +
	  'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' +
	  'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' +
	  'required,reversed,scoped,seamless,selected,sortable,translate,' +
	  'truespeed,typemustmatch,visible'
	);

	var xlinkNS = 'http://www.w3.org/1999/xlink';

	var isXlink = function (name) {
	  return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink'
	};

	var getXlinkProp = function (name) {
	  return isXlink(name) ? name.slice(6, name.length) : ''
	};

	var isFalsyAttrValue = function (val) {
	  return val == null || val === false
	};

	/*  */

	function genClassForVnode (vnode) {
	  var data = vnode.data;
	  var parentNode = vnode;
	  var childNode = vnode;
	  while (isDef(childNode.componentInstance)) {
	    childNode = childNode.componentInstance._vnode;
	    if (childNode && childNode.data) {
	      data = mergeClassData(childNode.data, data);
	    }
	  }
	  while (isDef(parentNode = parentNode.parent)) {
	    if (parentNode && parentNode.data) {
	      data = mergeClassData(data, parentNode.data);
	    }
	  }
	  return renderClass(data.staticClass, data.class)
	}

	function mergeClassData (child, parent) {
	  return {
	    staticClass: concat(child.staticClass, parent.staticClass),
	    class: isDef(child.class)
	      ? [child.class, parent.class]
	      : parent.class
	  }
	}

	function renderClass (
	  staticClass,
	  dynamicClass
	) {
	  if (isDef(staticClass) || isDef(dynamicClass)) {
	    return concat(staticClass, stringifyClass(dynamicClass))
	  }
	  /* istanbul ignore next */
	  return ''
	}

	function concat (a, b) {
	  return a ? b ? (a + ' ' + b) : a : (b || '')
	}

	function stringifyClass (value) {
	  if (Array.isArray(value)) {
	    return stringifyArray(value)
	  }
	  if (isObject$2(value)) {
	    return stringifyObject(value)
	  }
	  if (typeof value === 'string') {
	    return value
	  }
	  /* istanbul ignore next */
	  return ''
	}

	function stringifyArray (value) {
	  var res = '';
	  var stringified;
	  for (var i = 0, l = value.length; i < l; i++) {
	    if (isDef(stringified = stringifyClass(value[i])) && stringified !== '') {
	      if (res) { res += ' '; }
	      res += stringified;
	    }
	  }
	  return res
	}

	function stringifyObject (value) {
	  var res = '';
	  for (var key in value) {
	    if (value[key]) {
	      if (res) { res += ' '; }
	      res += key;
	    }
	  }
	  return res
	}

	/*  */

	var namespaceMap = {
	  svg: 'http://www.w3.org/2000/svg',
	  math: 'http://www.w3.org/1998/Math/MathML'
	};

	var isHTMLTag = makeMap(
	  'html,body,base,head,link,meta,style,title,' +
	  'address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,' +
	  'div,dd,dl,dt,figcaption,figure,picture,hr,img,li,main,ol,p,pre,ul,' +
	  'a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,' +
	  's,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video,' +
	  'embed,object,param,source,canvas,script,noscript,del,ins,' +
	  'caption,col,colgroup,table,thead,tbody,td,th,tr,' +
	  'button,datalist,fieldset,form,input,label,legend,meter,optgroup,option,' +
	  'output,progress,select,textarea,' +
	  'details,dialog,menu,menuitem,summary,' +
	  'content,element,shadow,template,blockquote,iframe,tfoot'
	);

	// this map is intentionally selective, only covering SVG elements that may
	// contain child elements.
	var isSVG = makeMap(
	  'svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,font-face,' +
	  'foreignObject,g,glyph,image,line,marker,mask,missing-glyph,path,pattern,' +
	  'polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view',
	  true
	);

	var isReservedTag = function (tag) {
	  return isHTMLTag(tag) || isSVG(tag)
	};

	function getTagNamespace (tag) {
	  if (isSVG(tag)) {
	    return 'svg'
	  }
	  // basic support for MathML
	  // note it doesn't support other MathML elements being component roots
	  if (tag === 'math') {
	    return 'math'
	  }
	}

	var unknownElementCache = Object.create(null);
	function isUnknownElement (tag) {
	  /* istanbul ignore if */
	  if (!inBrowser) {
	    return true
	  }
	  if (isReservedTag(tag)) {
	    return false
	  }
	  tag = tag.toLowerCase();
	  /* istanbul ignore if */
	  if (unknownElementCache[tag] != null) {
	    return unknownElementCache[tag]
	  }
	  var el = document.createElement(tag);
	  if (tag.indexOf('-') > -1) {
	    // http://stackoverflow.com/a/28210364/1070244
	    return (unknownElementCache[tag] = (
	      el.constructor === window.HTMLUnknownElement ||
	      el.constructor === window.HTMLElement
	    ))
	  } else {
	    return (unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString()))
	  }
	}

	var isTextInputType = makeMap('text,number,password,search,email,tel,url');

	/*  */

	/**
	 * Query an element selector if it's not an element already.
	 */
	function query (el) {
	  if (typeof el === 'string') {
	    var selected = document.querySelector(el);
	    if (!selected) {
	      warn(
	        'Cannot find element: ' + el
	      );
	      return document.createElement('div')
	    }
	    return selected
	  } else {
	    return el
	  }
	}

	/*  */

	function createElement$1 (tagName, vnode) {
	  var elm = document.createElement(tagName);
	  if (tagName !== 'select') {
	    return elm
	  }
	  // false or null will remove the attribute but undefined will not
	  if (vnode.data && vnode.data.attrs && vnode.data.attrs.multiple !== undefined) {
	    elm.setAttribute('multiple', 'multiple');
	  }
	  return elm
	}

	function createElementNS (namespace, tagName) {
	  return document.createElementNS(namespaceMap[namespace], tagName)
	}

	function createTextNode (text) {
	  return document.createTextNode(text)
	}

	function createComment (text) {
	  return document.createComment(text)
	}

	function insertBefore (parentNode, newNode, referenceNode) {
	  parentNode.insertBefore(newNode, referenceNode);
	}

	function removeChild (node, child) {
	  node.removeChild(child);
	}

	function appendChild (node, child) {
	  node.appendChild(child);
	}

	function parentNode (node) {
	  return node.parentNode
	}

	function nextSibling (node) {
	  return node.nextSibling
	}

	function tagName (node) {
	  return node.tagName
	}

	function setTextContent (node, text) {
	  node.textContent = text;
	}

	function setStyleScope (node, scopeId) {
	  node.setAttribute(scopeId, '');
	}

	var nodeOps = /*#__PURE__*/Object.freeze({
	  createElement: createElement$1,
	  createElementNS: createElementNS,
	  createTextNode: createTextNode,
	  createComment: createComment,
	  insertBefore: insertBefore,
	  removeChild: removeChild,
	  appendChild: appendChild,
	  parentNode: parentNode,
	  nextSibling: nextSibling,
	  tagName: tagName,
	  setTextContent: setTextContent,
	  setStyleScope: setStyleScope
	});

	/*  */

	var ref = {
	  create: function create (_, vnode) {
	    registerRef(vnode);
	  },
	  update: function update (oldVnode, vnode) {
	    if (oldVnode.data.ref !== vnode.data.ref) {
	      registerRef(oldVnode, true);
	      registerRef(vnode);
	    }
	  },
	  destroy: function destroy (vnode) {
	    registerRef(vnode, true);
	  }
	};

	function registerRef (vnode, isRemoval) {
	  var key = vnode.data.ref;
	  if (!isDef(key)) { return }

	  var vm = vnode.context;
	  var ref = vnode.componentInstance || vnode.elm;
	  var refs = vm.$refs;
	  if (isRemoval) {
	    if (Array.isArray(refs[key])) {
	      remove(refs[key], ref);
	    } else if (refs[key] === ref) {
	      refs[key] = undefined;
	    }
	  } else {
	    if (vnode.data.refInFor) {
	      if (!Array.isArray(refs[key])) {
	        refs[key] = [ref];
	      } else if (refs[key].indexOf(ref) < 0) {
	        // $flow-disable-line
	        refs[key].push(ref);
	      }
	    } else {
	      refs[key] = ref;
	    }
	  }
	}

	/**
	 * Virtual DOM patching algorithm based on Snabbdom by
	 * Simon Friis Vindum (@paldepind)
	 * Licensed under the MIT License
	 * https://github.com/paldepind/snabbdom/blob/master/LICENSE
	 *
	 * modified by Evan You (@yyx990803)
	 *
	 * Not type-checking this because this file is perf-critical and the cost
	 * of making flow understand it is not worth it.
	 */

	var emptyNode = new VNode('', {}, []);

	var hooks = ['create', 'activate', 'update', 'remove', 'destroy'];

	function sameVnode (a, b) {
	  return (
	    a.key === b.key && (
	      (
	        a.tag === b.tag &&
	        a.isComment === b.isComment &&
	        isDef(a.data) === isDef(b.data) &&
	        sameInputType(a, b)
	      ) || (
	        isTrue(a.isAsyncPlaceholder) &&
	        a.asyncFactory === b.asyncFactory &&
	        isUndef(b.asyncFactory.error)
	      )
	    )
	  )
	}

	function sameInputType (a, b) {
	  if (a.tag !== 'input') { return true }
	  var i;
	  var typeA = isDef(i = a.data) && isDef(i = i.attrs) && i.type;
	  var typeB = isDef(i = b.data) && isDef(i = i.attrs) && i.type;
	  return typeA === typeB || isTextInputType(typeA) && isTextInputType(typeB)
	}

	function createKeyToOldIdx (children, beginIdx, endIdx) {
	  var i, key;
	  var map = {};
	  for (i = beginIdx; i <= endIdx; ++i) {
	    key = children[i].key;
	    if (isDef(key)) { map[key] = i; }
	  }
	  return map
	}

	function createPatchFunction (backend) {
	  var i, j;
	  var cbs = {};

	  var modules = backend.modules;
	  var nodeOps = backend.nodeOps;

	  for (i = 0; i < hooks.length; ++i) {
	    cbs[hooks[i]] = [];
	    for (j = 0; j < modules.length; ++j) {
	      if (isDef(modules[j][hooks[i]])) {
	        cbs[hooks[i]].push(modules[j][hooks[i]]);
	      }
	    }
	  }

	  function emptyNodeAt (elm) {
	    return new VNode(nodeOps.tagName(elm).toLowerCase(), {}, [], undefined, elm)
	  }

	  function createRmCb (childElm, listeners) {
	    function remove$$1 () {
	      if (--remove$$1.listeners === 0) {
	        removeNode(childElm);
	      }
	    }
	    remove$$1.listeners = listeners;
	    return remove$$1
	  }

	  function removeNode (el) {
	    var parent = nodeOps.parentNode(el);
	    // element may have already been removed due to v-html / v-text
	    if (isDef(parent)) {
	      nodeOps.removeChild(parent, el);
	    }
	  }

	  function isUnknownElement$$1 (vnode, inVPre) {
	    return (
	      !inVPre &&
	      !vnode.ns &&
	      !(
	        config.ignoredElements.length &&
	        config.ignoredElements.some(function (ignore) {
	          return isRegExp(ignore)
	            ? ignore.test(vnode.tag)
	            : ignore === vnode.tag
	        })
	      ) &&
	      config.isUnknownElement(vnode.tag)
	    )
	  }

	  var creatingElmInVPre = 0;

	  function createElm (
	    vnode,
	    insertedVnodeQueue,
	    parentElm,
	    refElm,
	    nested,
	    ownerArray,
	    index
	  ) {
	    if (isDef(vnode.elm) && isDef(ownerArray)) {
	      // This vnode was used in a previous render!
	      // now it's used as a new node, overwriting its elm would cause
	      // potential patch errors down the road when it's used as an insertion
	      // reference node. Instead, we clone the node on-demand before creating
	      // associated DOM element for it.
	      vnode = ownerArray[index] = cloneVNode(vnode);
	    }

	    vnode.isRootInsert = !nested; // for transition enter check
	    if (createComponent(vnode, insertedVnodeQueue, parentElm, refElm)) {
	      return
	    }

	    var data = vnode.data;
	    var children = vnode.children;
	    var tag = vnode.tag;
	    if (isDef(tag)) {
	      {
	        if (data && data.pre) {
	          creatingElmInVPre++;
	        }
	        if (isUnknownElement$$1(vnode, creatingElmInVPre)) {
	          warn(
	            'Unknown custom element: <' + tag + '> - did you ' +
	            'register the component correctly? For recursive components, ' +
	            'make sure to provide the "name" option.',
	            vnode.context
	          );
	        }
	      }

	      vnode.elm = vnode.ns
	        ? nodeOps.createElementNS(vnode.ns, tag)
	        : nodeOps.createElement(tag, vnode);
	      setScope(vnode);

	      /* istanbul ignore if */
	      {
	        createChildren(vnode, children, insertedVnodeQueue);
	        if (isDef(data)) {
	          invokeCreateHooks(vnode, insertedVnodeQueue);
	        }
	        insert(parentElm, vnode.elm, refElm);
	      }

	      if (data && data.pre) {
	        creatingElmInVPre--;
	      }
	    } else if (isTrue(vnode.isComment)) {
	      vnode.elm = nodeOps.createComment(vnode.text);
	      insert(parentElm, vnode.elm, refElm);
	    } else {
	      vnode.elm = nodeOps.createTextNode(vnode.text);
	      insert(parentElm, vnode.elm, refElm);
	    }
	  }

	  function createComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
	    var i = vnode.data;
	    if (isDef(i)) {
	      var isReactivated = isDef(vnode.componentInstance) && i.keepAlive;
	      if (isDef(i = i.hook) && isDef(i = i.init)) {
	        i(vnode, false /* hydrating */);
	      }
	      // after calling the init hook, if the vnode is a child component
	      // it should've created a child instance and mounted it. the child
	      // component also has set the placeholder vnode's elm.
	      // in that case we can just return the element and be done.
	      if (isDef(vnode.componentInstance)) {
	        initComponent(vnode, insertedVnodeQueue);
	        insert(parentElm, vnode.elm, refElm);
	        if (isTrue(isReactivated)) {
	          reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm);
	        }
	        return true
	      }
	    }
	  }

	  function initComponent (vnode, insertedVnodeQueue) {
	    if (isDef(vnode.data.pendingInsert)) {
	      insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert);
	      vnode.data.pendingInsert = null;
	    }
	    vnode.elm = vnode.componentInstance.$el;
	    if (isPatchable(vnode)) {
	      invokeCreateHooks(vnode, insertedVnodeQueue);
	      setScope(vnode);
	    } else {
	      // empty component root.
	      // skip all element-related modules except for ref (#3455)
	      registerRef(vnode);
	      // make sure to invoke the insert hook
	      insertedVnodeQueue.push(vnode);
	    }
	  }

	  function reactivateComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
	    var i;
	    // hack for #4339: a reactivated component with inner transition
	    // does not trigger because the inner node's created hooks are not called
	    // again. It's not ideal to involve module-specific logic in here but
	    // there doesn't seem to be a better way to do it.
	    var innerNode = vnode;
	    while (innerNode.componentInstance) {
	      innerNode = innerNode.componentInstance._vnode;
	      if (isDef(i = innerNode.data) && isDef(i = i.transition)) {
	        for (i = 0; i < cbs.activate.length; ++i) {
	          cbs.activate[i](emptyNode, innerNode);
	        }
	        insertedVnodeQueue.push(innerNode);
	        break
	      }
	    }
	    // unlike a newly created component,
	    // a reactivated keep-alive component doesn't insert itself
	    insert(parentElm, vnode.elm, refElm);
	  }

	  function insert (parent, elm, ref$$1) {
	    if (isDef(parent)) {
	      if (isDef(ref$$1)) {
	        if (nodeOps.parentNode(ref$$1) === parent) {
	          nodeOps.insertBefore(parent, elm, ref$$1);
	        }
	      } else {
	        nodeOps.appendChild(parent, elm);
	      }
	    }
	  }

	  function createChildren (vnode, children, insertedVnodeQueue) {
	    if (Array.isArray(children)) {
	      {
	        checkDuplicateKeys(children);
	      }
	      for (var i = 0; i < children.length; ++i) {
	        createElm(children[i], insertedVnodeQueue, vnode.elm, null, true, children, i);
	      }
	    } else if (isPrimitive(vnode.text)) {
	      nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(String(vnode.text)));
	    }
	  }

	  function isPatchable (vnode) {
	    while (vnode.componentInstance) {
	      vnode = vnode.componentInstance._vnode;
	    }
	    return isDef(vnode.tag)
	  }

	  function invokeCreateHooks (vnode, insertedVnodeQueue) {
	    for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
	      cbs.create[i$1](emptyNode, vnode);
	    }
	    i = vnode.data.hook; // Reuse variable
	    if (isDef(i)) {
	      if (isDef(i.create)) { i.create(emptyNode, vnode); }
	      if (isDef(i.insert)) { insertedVnodeQueue.push(vnode); }
	    }
	  }

	  // set scope id attribute for scoped CSS.
	  // this is implemented as a special case to avoid the overhead
	  // of going through the normal attribute patching process.
	  function setScope (vnode) {
	    var i;
	    if (isDef(i = vnode.fnScopeId)) {
	      nodeOps.setStyleScope(vnode.elm, i);
	    } else {
	      var ancestor = vnode;
	      while (ancestor) {
	        if (isDef(i = ancestor.context) && isDef(i = i.$options._scopeId)) {
	          nodeOps.setStyleScope(vnode.elm, i);
	        }
	        ancestor = ancestor.parent;
	      }
	    }
	    // for slot content they should also get the scopeId from the host instance.
	    if (isDef(i = activeInstance) &&
	      i !== vnode.context &&
	      i !== vnode.fnContext &&
	      isDef(i = i.$options._scopeId)
	    ) {
	      nodeOps.setStyleScope(vnode.elm, i);
	    }
	  }

	  function addVnodes (parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) {
	    for (; startIdx <= endIdx; ++startIdx) {
	      createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm, false, vnodes, startIdx);
	    }
	  }

	  function invokeDestroyHook (vnode) {
	    var i, j;
	    var data = vnode.data;
	    if (isDef(data)) {
	      if (isDef(i = data.hook) && isDef(i = i.destroy)) { i(vnode); }
	      for (i = 0; i < cbs.destroy.length; ++i) { cbs.destroy[i](vnode); }
	    }
	    if (isDef(i = vnode.children)) {
	      for (j = 0; j < vnode.children.length; ++j) {
	        invokeDestroyHook(vnode.children[j]);
	      }
	    }
	  }

	  function removeVnodes (parentElm, vnodes, startIdx, endIdx) {
	    for (; startIdx <= endIdx; ++startIdx) {
	      var ch = vnodes[startIdx];
	      if (isDef(ch)) {
	        if (isDef(ch.tag)) {
	          removeAndInvokeRemoveHook(ch);
	          invokeDestroyHook(ch);
	        } else { // Text node
	          removeNode(ch.elm);
	        }
	      }
	    }
	  }

	  function removeAndInvokeRemoveHook (vnode, rm) {
	    if (isDef(rm) || isDef(vnode.data)) {
	      var i;
	      var listeners = cbs.remove.length + 1;
	      if (isDef(rm)) {
	        // we have a recursively passed down rm callback
	        // increase the listeners count
	        rm.listeners += listeners;
	      } else {
	        // directly removing
	        rm = createRmCb(vnode.elm, listeners);
	      }
	      // recursively invoke hooks on child component root node
	      if (isDef(i = vnode.componentInstance) && isDef(i = i._vnode) && isDef(i.data)) {
	        removeAndInvokeRemoveHook(i, rm);
	      }
	      for (i = 0; i < cbs.remove.length; ++i) {
	        cbs.remove[i](vnode, rm);
	      }
	      if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) {
	        i(vnode, rm);
	      } else {
	        rm();
	      }
	    } else {
	      removeNode(vnode.elm);
	    }
	  }

	  function updateChildren (parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) {
	    var oldStartIdx = 0;
	    var newStartIdx = 0;
	    var oldEndIdx = oldCh.length - 1;
	    var oldStartVnode = oldCh[0];
	    var oldEndVnode = oldCh[oldEndIdx];
	    var newEndIdx = newCh.length - 1;
	    var newStartVnode = newCh[0];
	    var newEndVnode = newCh[newEndIdx];
	    var oldKeyToIdx, idxInOld, vnodeToMove, refElm;

	    // removeOnly is a special flag used only by <transition-group>
	    // to ensure removed elements stay in correct relative positions
	    // during leaving transitions
	    var canMove = !removeOnly;

	    {
	      checkDuplicateKeys(newCh);
	    }

	    while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {
	      if (isUndef(oldStartVnode)) {
	        oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left
	      } else if (isUndef(oldEndVnode)) {
	        oldEndVnode = oldCh[--oldEndIdx];
	      } else if (sameVnode(oldStartVnode, newStartVnode)) {
	        patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
	        oldStartVnode = oldCh[++oldStartIdx];
	        newStartVnode = newCh[++newStartIdx];
	      } else if (sameVnode(oldEndVnode, newEndVnode)) {
	        patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
	        oldEndVnode = oldCh[--oldEndIdx];
	        newEndVnode = newCh[--newEndIdx];
	      } else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right
	        patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx);
	        canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm));
	        oldStartVnode = oldCh[++oldStartIdx];
	        newEndVnode = newCh[--newEndIdx];
	      } else if (sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left
	        patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
	        canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm);
	        oldEndVnode = oldCh[--oldEndIdx];
	        newStartVnode = newCh[++newStartIdx];
	      } else {
	        if (isUndef(oldKeyToIdx)) { oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx); }
	        idxInOld = isDef(newStartVnode.key)
	          ? oldKeyToIdx[newStartVnode.key]
	          : findIdxInOld(newStartVnode, oldCh, oldStartIdx, oldEndIdx);
	        if (isUndef(idxInOld)) { // New element
	          createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
	        } else {
	          vnodeToMove = oldCh[idxInOld];
	          if (sameVnode(vnodeToMove, newStartVnode)) {
	            patchVnode(vnodeToMove, newStartVnode, insertedVnodeQueue, newCh, newStartIdx);
	            oldCh[idxInOld] = undefined;
	            canMove && nodeOps.insertBefore(parentElm, vnodeToMove.elm, oldStartVnode.elm);
	          } else {
	            // same key but different element. treat as new element
	            createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx);
	          }
	        }
	        newStartVnode = newCh[++newStartIdx];
	      }
	    }
	    if (oldStartIdx > oldEndIdx) {
	      refElm = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
	      addVnodes(parentElm, refElm, newCh, newStartIdx, newEndIdx, insertedVnodeQueue);
	    } else if (newStartIdx > newEndIdx) {
	      removeVnodes(parentElm, oldCh, oldStartIdx, oldEndIdx);
	    }
	  }

	  function checkDuplicateKeys (children) {
	    var seenKeys = {};
	    for (var i = 0; i < children.length; i++) {
	      var vnode = children[i];
	      var key = vnode.key;
	      if (isDef(key)) {
	        if (seenKeys[key]) {
	          warn(
	            ("Duplicate keys detected: '" + key + "'. This may cause an update error."),
	            vnode.context
	          );
	        } else {
	          seenKeys[key] = true;
	        }
	      }
	    }
	  }

	  function findIdxInOld (node, oldCh, start, end) {
	    for (var i = start; i < end; i++) {
	      var c = oldCh[i];
	      if (isDef(c) && sameVnode(node, c)) { return i }
	    }
	  }

	  function patchVnode (
	    oldVnode,
	    vnode,
	    insertedVnodeQueue,
	    ownerArray,
	    index,
	    removeOnly
	  ) {
	    if (oldVnode === vnode) {
	      return
	    }

	    if (isDef(vnode.elm) && isDef(ownerArray)) {
	      // clone reused vnode
	      vnode = ownerArray[index] = cloneVNode(vnode);
	    }

	    var elm = vnode.elm = oldVnode.elm;

	    if (isTrue(oldVnode.isAsyncPlaceholder)) {
	      if (isDef(vnode.asyncFactory.resolved)) {
	        hydrate(oldVnode.elm, vnode, insertedVnodeQueue);
	      } else {
	        vnode.isAsyncPlaceholder = true;
	      }
	      return
	    }

	    // reuse element for static trees.
	    // note we only do this if the vnode is cloned -
	    // if the new node is not cloned it means the render functions have been
	    // reset by the hot-reload-api and we need to do a proper re-render.
	    if (isTrue(vnode.isStatic) &&
	      isTrue(oldVnode.isStatic) &&
	      vnode.key === oldVnode.key &&
	      (isTrue(vnode.isCloned) || isTrue(vnode.isOnce))
	    ) {
	      vnode.componentInstance = oldVnode.componentInstance;
	      return
	    }

	    var i;
	    var data = vnode.data;
	    if (isDef(data) && isDef(i = data.hook) && isDef(i = i.prepatch)) {
	      i(oldVnode, vnode);
	    }

	    var oldCh = oldVnode.children;
	    var ch = vnode.children;
	    if (isDef(data) && isPatchable(vnode)) {
	      for (i = 0; i < cbs.update.length; ++i) { cbs.update[i](oldVnode, vnode); }
	      if (isDef(i = data.hook) && isDef(i = i.update)) { i(oldVnode, vnode); }
	    }
	    if (isUndef(vnode.text)) {
	      if (isDef(oldCh) && isDef(ch)) {
	        if (oldCh !== ch) { updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly); }
	      } else if (isDef(ch)) {
	        {
	          checkDuplicateKeys(ch);
	        }
	        if (isDef(oldVnode.text)) { nodeOps.setTextContent(elm, ''); }
	        addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue);
	      } else if (isDef(oldCh)) {
	        removeVnodes(elm, oldCh, 0, oldCh.length - 1);
	      } else if (isDef(oldVnode.text)) {
	        nodeOps.setTextContent(elm, '');
	      }
	    } else if (oldVnode.text !== vnode.text) {
	      nodeOps.setTextContent(elm, vnode.text);
	    }
	    if (isDef(data)) {
	      if (isDef(i = data.hook) && isDef(i = i.postpatch)) { i(oldVnode, vnode); }
	    }
	  }

	  function invokeInsertHook (vnode, queue, initial) {
	    // delay insert hooks for component root nodes, invoke them after the
	    // element is really inserted
	    if (isTrue(initial) && isDef(vnode.parent)) {
	      vnode.parent.data.pendingInsert = queue;
	    } else {
	      for (var i = 0; i < queue.length; ++i) {
	        queue[i].data.hook.insert(queue[i]);
	      }
	    }
	  }

	  var hydrationBailed = false;
	  // list of modules that can skip create hook during hydration because they
	  // are already rendered on the client or has no need for initialization
	  // Note: style is excluded because it relies on initial clone for future
	  // deep updates (#7063).
	  var isRenderedModule = makeMap('attrs,class,staticClass,staticStyle,key');

	  // Note: this is a browser-only function so we can assume elms are DOM nodes.
	  function hydrate (elm, vnode, insertedVnodeQueue, inVPre) {
	    var i;
	    var tag = vnode.tag;
	    var data = vnode.data;
	    var children = vnode.children;
	    inVPre = inVPre || (data && data.pre);
	    vnode.elm = elm;

	    if (isTrue(vnode.isComment) && isDef(vnode.asyncFactory)) {
	      vnode.isAsyncPlaceholder = true;
	      return true
	    }
	    // assert node match
	    {
	      if (!assertNodeMatch(elm, vnode, inVPre)) {
	        return false
	      }
	    }
	    if (isDef(data)) {
	      if (isDef(i = data.hook) && isDef(i = i.init)) { i(vnode, true /* hydrating */); }
	      if (isDef(i = vnode.componentInstance)) {
	        // child component. it should have hydrated its own tree.
	        initComponent(vnode, insertedVnodeQueue);
	        return true
	      }
	    }
	    if (isDef(tag)) {
	      if (isDef(children)) {
	        // empty element, allow client to pick up and populate children
	        if (!elm.hasChildNodes()) {
	          createChildren(vnode, children, insertedVnodeQueue);
	        } else {
	          // v-html and domProps: innerHTML
	          if (isDef(i = data) && isDef(i = i.domProps) && isDef(i = i.innerHTML)) {
	            if (i !== elm.innerHTML) {
	              /* istanbul ignore if */
	              if (typeof console !== 'undefined' &&
	                !hydrationBailed
	              ) {
	                hydrationBailed = true;
	                console.warn('Parent: ', elm);
	                console.warn('server innerHTML: ', i);
	                console.warn('client innerHTML: ', elm.innerHTML);
	              }
	              return false
	            }
	          } else {
	            // iterate and compare children lists
	            var childrenMatch = true;
	            var childNode = elm.firstChild;
	            for (var i$1 = 0; i$1 < children.length; i$1++) {
	              if (!childNode || !hydrate(childNode, children[i$1], insertedVnodeQueue, inVPre)) {
	                childrenMatch = false;
	                break
	              }
	              childNode = childNode.nextSibling;
	            }
	            // if childNode is not null, it means the actual childNodes list is
	            // longer than the virtual children list.
	            if (!childrenMatch || childNode) {
	              /* istanbul ignore if */
	              if (typeof console !== 'undefined' &&
	                !hydrationBailed
	              ) {
	                hydrationBailed = true;
	                console.warn('Parent: ', elm);
	                console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children);
	              }
	              return false
	            }
	          }
	        }
	      }
	      if (isDef(data)) {
	        var fullInvoke = false;
	        for (var key in data) {
	          if (!isRenderedModule(key)) {
	            fullInvoke = true;
	            invokeCreateHooks(vnode, insertedVnodeQueue);
	            break
	          }
	        }
	        if (!fullInvoke && data['class']) {
	          // ensure collecting deps for deep class bindings for future updates
	          traverse(data['class']);
	        }
	      }
	    } else if (elm.data !== vnode.text) {
	      elm.data = vnode.text;
	    }
	    return true
	  }

	  function assertNodeMatch (node, vnode, inVPre) {
	    if (isDef(vnode.tag)) {
	      return vnode.tag.indexOf('vue-component') === 0 || (
	        !isUnknownElement$$1(vnode, inVPre) &&
	        vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase())
	      )
	    } else {
	      return node.nodeType === (vnode.isComment ? 8 : 3)
	    }
	  }

	  return function patch (oldVnode, vnode, hydrating, removeOnly) {
	    if (isUndef(vnode)) {
	      if (isDef(oldVnode)) { invokeDestroyHook(oldVnode); }
	      return
	    }

	    var isInitialPatch = false;
	    var insertedVnodeQueue = [];

	    if (isUndef(oldVnode)) {
	      // empty mount (likely as component), create new root element
	      isInitialPatch = true;
	      createElm(vnode, insertedVnodeQueue);
	    } else {
	      var isRealElement = isDef(oldVnode.nodeType);
	      if (!isRealElement && sameVnode(oldVnode, vnode)) {
	        // patch existing root node
	        patchVnode(oldVnode, vnode, insertedVnodeQueue, null, null, removeOnly);
	      } else {
	        if (isRealElement) {
	          // mounting to a real element
	          // check if this is server-rendered content and if we can perform
	          // a successful hydration.
	          if (oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) {
	            oldVnode.removeAttribute(SSR_ATTR);
	            hydrating = true;
	          }
	          if (isTrue(hydrating)) {
	            if (hydrate(oldVnode, vnode, insertedVnodeQueue)) {
	              invokeInsertHook(vnode, insertedVnodeQueue, true);
	              return oldVnode
	            } else {
	              warn(
	                'The client-side rendered virtual DOM tree is not matching ' +
	                'server-rendered content. This is likely caused by incorrect ' +
	                'HTML markup, for example nesting block-level elements inside ' +
	                '<p>, or missing <tbody>. Bailing hydration and performing ' +
	                'full client-side render.'
	              );
	            }
	          }
	          // either not server-rendered, or hydration failed.
	          // create an empty node and replace it
	          oldVnode = emptyNodeAt(oldVnode);
	        }

	        // replacing existing element
	        var oldElm = oldVnode.elm;
	        var parentElm = nodeOps.parentNode(oldElm);

	        // create new node
	        createElm(
	          vnode,
	          insertedVnodeQueue,
	          // extremely rare edge case: do not insert if old element is in a
	          // leaving transition. Only happens when combining transition +
	          // keep-alive + HOCs. (#4590)
	          oldElm._leaveCb ? null : parentElm,
	          nodeOps.nextSibling(oldElm)
	        );

	        // update parent placeholder node element, recursively
	        if (isDef(vnode.parent)) {
	          var ancestor = vnode.parent;
	          var patchable = isPatchable(vnode);
	          while (ancestor) {
	            for (var i = 0; i < cbs.destroy.length; ++i) {
	              cbs.destroy[i](ancestor);
	            }
	            ancestor.elm = vnode.elm;
	            if (patchable) {
	              for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
	                cbs.create[i$1](emptyNode, ancestor);
	              }
	              // #6513
	              // invoke insert hooks that may have been merged by create hooks.
	              // e.g. for directives that uses the "inserted" hook.
	              var insert = ancestor.data.hook.insert;
	              if (insert.merged) {
	                // start at index 1 to avoid re-invoking component mounted hook
	                for (var i$2 = 1; i$2 < insert.fns.length; i$2++) {
	                  insert.fns[i$2]();
	                }
	              }
	            } else {
	              registerRef(ancestor);
	            }
	            ancestor = ancestor.parent;
	          }
	        }

	        // destroy old node
	        if (isDef(parentElm)) {
	          removeVnodes(parentElm, [oldVnode], 0, 0);
	        } else if (isDef(oldVnode.tag)) {
	          invokeDestroyHook(oldVnode);
	        }
	      }
	    }

	    invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch);
	    return vnode.elm
	  }
	}

	/*  */

	var directives = {
	  create: updateDirectives,
	  update: updateDirectives,
	  destroy: function unbindDirectives (vnode) {
	    updateDirectives(vnode, emptyNode);
	  }
	};

	function updateDirectives (oldVnode, vnode) {
	  if (oldVnode.data.directives || vnode.data.directives) {
	    _update(oldVnode, vnode);
	  }
	}

	function _update (oldVnode, vnode) {
	  var isCreate = oldVnode === emptyNode;
	  var isDestroy = vnode === emptyNode;
	  var oldDirs = normalizeDirectives$1(oldVnode.data.directives, oldVnode.context);
	  var newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context);

	  var dirsWithInsert = [];
	  var dirsWithPostpatch = [];

	  var key, oldDir, dir;
	  for (key in newDirs) {
	    oldDir = oldDirs[key];
	    dir = newDirs[key];
	    if (!oldDir) {
	      // new directive, bind
	      callHook$1(dir, 'bind', vnode, oldVnode);
	      if (dir.def && dir.def.inserted) {
	        dirsWithInsert.push(dir);
	      }
	    } else {
	      // existing directive, update
	      dir.oldValue = oldDir.value;
	      dir.oldArg = oldDir.arg;
	      callHook$1(dir, 'update', vnode, oldVnode);
	      if (dir.def && dir.def.componentUpdated) {
	        dirsWithPostpatch.push(dir);
	      }
	    }
	  }

	  if (dirsWithInsert.length) {
	    var callInsert = function () {
	      for (var i = 0; i < dirsWithInsert.length; i++) {
	        callHook$1(dirsWithInsert[i], 'inserted', vnode, oldVnode);
	      }
	    };
	    if (isCreate) {
	      mergeVNodeHook(vnode, 'insert', callInsert);
	    } else {
	      callInsert();
	    }
	  }

	  if (dirsWithPostpatch.length) {
	    mergeVNodeHook(vnode, 'postpatch', function () {
	      for (var i = 0; i < dirsWithPostpatch.length; i++) {
	        callHook$1(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode);
	      }
	    });
	  }

	  if (!isCreate) {
	    for (key in oldDirs) {
	      if (!newDirs[key]) {
	        // no longer present, unbind
	        callHook$1(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy);
	      }
	    }
	  }
	}

	var emptyModifiers = Object.create(null);

	function normalizeDirectives$1 (
	  dirs,
	  vm
	) {
	  var res = Object.create(null);
	  if (!dirs) {
	    // $flow-disable-line
	    return res
	  }
	  var i, dir;
	  for (i = 0; i < dirs.length; i++) {
	    dir = dirs[i];
	    if (!dir.modifiers) {
	      // $flow-disable-line
	      dir.modifiers = emptyModifiers;
	    }
	    res[getRawDirName(dir)] = dir;
	    dir.def = resolveAsset(vm.$options, 'directives', dir.name, true);
	  }
	  // $flow-disable-line
	  return res
	}

	function getRawDirName (dir) {
	  return dir.rawName || ((dir.name) + "." + (Object.keys(dir.modifiers || {}).join('.')))
	}

	function callHook$1 (dir, hook, vnode, oldVnode, isDestroy) {
	  var fn = dir.def && dir.def[hook];
	  if (fn) {
	    try {
	      fn(vnode.elm, dir, vnode, oldVnode, isDestroy);
	    } catch (e) {
	      handleError(e, vnode.context, ("directive " + (dir.name) + " " + hook + " hook"));
	    }
	  }
	}

	var baseModules = [
	  ref,
	  directives
	];

	/*  */

	function updateAttrs (oldVnode, vnode) {
	  var opts = vnode.componentOptions;
	  if (isDef(opts) && opts.Ctor.options.inheritAttrs === false) {
	    return
	  }
	  if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) {
	    return
	  }
	  var key, cur, old;
	  var elm = vnode.elm;
	  var oldAttrs = oldVnode.data.attrs || {};
	  var attrs = vnode.data.attrs || {};
	  // clone observed objects, as the user probably wants to mutate it
	  if (isDef(attrs.__ob__)) {
	    attrs = vnode.data.attrs = extend({}, attrs);
	  }

	  for (key in attrs) {
	    cur = attrs[key];
	    old = oldAttrs[key];
	    if (old !== cur) {
	      setAttr(elm, key, cur);
	    }
	  }
	  // #4391: in IE9, setting type can reset value for input[type=radio]
	  // #6666: IE/Edge forces progress value down to 1 before setting a max
	  /* istanbul ignore if */
	  if ((isIE || isEdge) && attrs.value !== oldAttrs.value) {
	    setAttr(elm, 'value', attrs.value);
	  }
	  for (key in oldAttrs) {
	    if (isUndef(attrs[key])) {
	      if (isXlink(key)) {
	        elm.removeAttributeNS(xlinkNS, getXlinkProp(key));
	      } else if (!isEnumeratedAttr(key)) {
	        elm.removeAttribute(key);
	      }
	    }
	  }
	}

	function setAttr (el, key, value) {
	  if (el.tagName.indexOf('-') > -1) {
	    baseSetAttr(el, key, value);
	  } else if (isBooleanAttr(key)) {
	    // set attribute for blank value
	    // e.g. <option disabled>Select one</option>
	    if (isFalsyAttrValue(value)) {
	      el.removeAttribute(key);
	    } else {
	      // technically allowfullscreen is a boolean attribute for <iframe>,
	      // but Flash expects a value of "true" when used on <embed> tag
	      value = key === 'allowfullscreen' && el.tagName === 'EMBED'
	        ? 'true'
	        : key;
	      el.setAttribute(key, value);
	    }
	  } else if (isEnumeratedAttr(key)) {
	    el.setAttribute(key, convertEnumeratedValue(key, value));
	  } else if (isXlink(key)) {
	    if (isFalsyAttrValue(value)) {
	      el.removeAttributeNS(xlinkNS, getXlinkProp(key));
	    } else {
	      el.setAttributeNS(xlinkNS, key, value);
	    }
	  } else {
	    baseSetAttr(el, key, value);
	  }
	}

	function baseSetAttr (el, key, value) {
	  if (isFalsyAttrValue(value)) {
	    el.removeAttribute(key);
	  } else {
	    // #7138: IE10 & 11 fires input event when setting placeholder on
	    // <textarea>... block the first input event and remove the blocker
	    // immediately.
	    /* istanbul ignore if */
	    if (
	      isIE && !isIE9 &&
	      el.tagName === 'TEXTAREA' &&
	      key === 'placeholder' && value !== '' && !el.__ieph
	    ) {
	      var blocker = function (e) {
	        e.stopImmediatePropagation();
	        el.removeEventListener('input', blocker);
	      };
	      el.addEventListener('input', blocker);
	      // $flow-disable-line
	      el.__ieph = true; /* IE placeholder patched */
	    }
	    el.setAttribute(key, value);
	  }
	}

	var attrs = {
	  create: updateAttrs,
	  update: updateAttrs
	};

	/*  */

	function updateClass (oldVnode, vnode) {
	  var el = vnode.elm;
	  var data = vnode.data;
	  var oldData = oldVnode.data;
	  if (
	    isUndef(data.staticClass) &&
	    isUndef(data.class) && (
	      isUndef(oldData) || (
	        isUndef(oldData.staticClass) &&
	        isUndef(oldData.class)
	      )
	    )
	  ) {
	    return
	  }

	  var cls = genClassForVnode(vnode);

	  // handle transition classes
	  var transitionClass = el._transitionClasses;
	  if (isDef(transitionClass)) {
	    cls = concat(cls, stringifyClass(transitionClass));
	  }

	  // set the class
	  if (cls !== el._prevClass) {
	    el.setAttribute('class', cls);
	    el._prevClass = cls;
	  }
	}

	var klass = {
	  create: updateClass,
	  update: updateClass
	};

	/*  */

	/*  */

	/*  */

	/*  */

	// in some cases, the event used has to be determined at runtime
	// so we used some reserved tokens during compile.
	var RANGE_TOKEN = '__r';
	var CHECKBOX_RADIO_TOKEN = '__c';

	/*  */

	// normalize v-model event tokens that can only be determined at runtime.
	// it's important to place the event as the first in the array because
	// the whole point is ensuring the v-model callback gets called before
	// user-attached handlers.
	function normalizeEvents (on) {
	  /* istanbul ignore if */
	  if (isDef(on[RANGE_TOKEN])) {
	    // IE input[type=range] only supports `change` event
	    var event = isIE ? 'change' : 'input';
	    on[event] = [].concat(on[RANGE_TOKEN], on[event] || []);
	    delete on[RANGE_TOKEN];
	  }
	  // This was originally intended to fix #4521 but no longer necessary
	  // after 2.5. Keeping it for backwards compat with generated code from < 2.4
	  /* istanbul ignore if */
	  if (isDef(on[CHECKBOX_RADIO_TOKEN])) {
	    on.change = [].concat(on[CHECKBOX_RADIO_TOKEN], on.change || []);
	    delete on[CHECKBOX_RADIO_TOKEN];
	  }
	}

	var target$1;

	function createOnceHandler$1 (event, handler, capture) {
	  var _target = target$1; // save current target element in closure
	  return function onceHandler () {
	    var res = handler.apply(null, arguments);
	    if (res !== null) {
	      remove$2(event, onceHandler, capture, _target);
	    }
	  }
	}

	// #9446: Firefox <= 53 (in particular, ESR 52) has incorrect Event.timeStamp
	// implementation and does not fire microtasks in between event propagation, so
	// safe to exclude.
	var useMicrotaskFix = isUsingMicroTask && !(isFF && Number(isFF[1]) <= 53);

	function add$1 (
	  name,
	  handler,
	  capture,
	  passive
	) {
	  // async edge case #6566: inner click event triggers patch, event handler
	  // attached to outer element during patch, and triggered again. This
	  // happens because browsers fire microtask ticks between event propagation.
	  // the solution is simple: we save the timestamp when a handler is attached,
	  // and the handler would only fire if the event passed to it was fired
	  // AFTER it was attached.
	  if (useMicrotaskFix) {
	    var attachedTimestamp = currentFlushTimestamp;
	    var original = handler;
	    handler = original._wrapper = function (e) {
	      if (
	        // no bubbling, should always fire.
	        // this is just a safety net in case event.timeStamp is unreliable in
	        // certain weird environments...
	        e.target === e.currentTarget ||
	        // event is fired after handler attachment
	        e.timeStamp >= attachedTimestamp ||
	        // bail for environments that have buggy event.timeStamp implementations
	        // #9462 iOS 9 bug: event.timeStamp is 0 after history.pushState
	        // #9681 QtWebEngine event.timeStamp is negative value
	        e.timeStamp <= 0 ||
	        // #9448 bail if event is fired in another document in a multi-page
	        // electron/nw.js app, since event.timeStamp will be using a different
	        // starting reference
	        e.target.ownerDocument !== document
	      ) {
	        return original.apply(this, arguments)
	      }
	    };
	  }
	  target$1.addEventListener(
	    name,
	    handler,
	    supportsPassive
	      ? { capture: capture, passive: passive }
	      : capture
	  );
	}

	function remove$2 (
	  name,
	  handler,
	  capture,
	  _target
	) {
	  (_target || target$1).removeEventListener(
	    name,
	    handler._wrapper || handler,
	    capture
	  );
	}

	function updateDOMListeners (oldVnode, vnode) {
	  if (isUndef(oldVnode.data.on) && isUndef(vnode.data.on)) {
	    return
	  }
	  var on = vnode.data.on || {};
	  var oldOn = oldVnode.data.on || {};
	  target$1 = vnode.elm;
	  normalizeEvents(on);
	  updateListeners(on, oldOn, add$1, remove$2, createOnceHandler$1, vnode.context);
	  target$1 = undefined;
	}

	var events = {
	  create: updateDOMListeners,
	  update: updateDOMListeners
	};

	/*  */

	var svgContainer;

	function updateDOMProps (oldVnode, vnode) {
	  if (isUndef(oldVnode.data.domProps) && isUndef(vnode.data.domProps)) {
	    return
	  }
	  var key, cur;
	  var elm = vnode.elm;
	  var oldProps = oldVnode.data.domProps || {};
	  var props = vnode.data.domProps || {};
	  // clone observed objects, as the user probably wants to mutate it
	  if (isDef(props.__ob__)) {
	    props = vnode.data.domProps = extend({}, props);
	  }

	  for (key in oldProps) {
	    if (!(key in props)) {
	      elm[key] = '';
	    }
	  }

	  for (key in props) {
	    cur = props[key];
	    // ignore children if the node has textContent or innerHTML,
	    // as these will throw away existing DOM nodes and cause removal errors
	    // on subsequent patches (#3360)
	    if (key === 'textContent' || key === 'innerHTML') {
	      if (vnode.children) { vnode.children.length = 0; }
	      if (cur === oldProps[key]) { continue }
	      // #6601 work around Chrome version <= 55 bug where single textNode
	      // replaced by innerHTML/textContent retains its parentNode property
	      if (elm.childNodes.length === 1) {
	        elm.removeChild(elm.childNodes[0]);
	      }
	    }

	    if (key === 'value' && elm.tagName !== 'PROGRESS') {
	      // store value as _value as well since
	      // non-string values will be stringified
	      elm._value = cur;
	      // avoid resetting cursor position when value is the same
	      var strCur = isUndef(cur) ? '' : String(cur);
	      if (shouldUpdateValue(elm, strCur)) {
	        elm.value = strCur;
	      }
	    } else if (key === 'innerHTML' && isSVG(elm.tagName) && isUndef(elm.innerHTML)) {
	      // IE doesn't support innerHTML for SVG elements
	      svgContainer = svgContainer || document.createElement('div');
	      svgContainer.innerHTML = "<svg>" + cur + "</svg>";
	      var svg = svgContainer.firstChild;
	      while (elm.firstChild) {
	        elm.removeChild(elm.firstChild);
	      }
	      while (svg.firstChild) {
	        elm.appendChild(svg.firstChild);
	      }
	    } else if (
	      // skip the update if old and new VDOM state is the same.
	      // `value` is handled separately because the DOM value may be temporarily
	      // out of sync with VDOM state due to focus, composition and modifiers.
	      // This  #4521 by skipping the unnecesarry `checked` update.
	      cur !== oldProps[key]
	    ) {
	      // some property updates can throw
	      // e.g. `value` on <progress> w/ non-finite value
	      try {
	        elm[key] = cur;
	      } catch (e) {}
	    }
	  }
	}

	// check platforms/web/util/attrs.js acceptValue


	function shouldUpdateValue (elm, checkVal) {
	  return (!elm.composing && (
	    elm.tagName === 'OPTION' ||
	    isNotInFocusAndDirty(elm, checkVal) ||
	    isDirtyWithModifiers(elm, checkVal)
	  ))
	}

	function isNotInFocusAndDirty (elm, checkVal) {
	  // return true when textbox (.number and .trim) loses focus and its value is
	  // not equal to the updated value
	  var notInFocus = true;
	  // #6157
	  // work around IE bug when accessing document.activeElement in an iframe
	  try { notInFocus = document.activeElement !== elm; } catch (e) {}
	  return notInFocus && elm.value !== checkVal
	}

	function isDirtyWithModifiers (elm, newVal) {
	  var value = elm.value;
	  var modifiers = elm._vModifiers; // injected by v-model runtime
	  if (isDef(modifiers)) {
	    if (modifiers.number) {
	      return toNumber$1(value) !== toNumber$1(newVal)
	    }
	    if (modifiers.trim) {
	      return value.trim() !== newVal.trim()
	    }
	  }
	  return value !== newVal
	}

	var domProps = {
	  create: updateDOMProps,
	  update: updateDOMProps
	};

	/*  */

	var parseStyleText = cached(function (cssText) {
	  var res = {};
	  var listDelimiter = /;(?![^(]*\))/g;
	  var propertyDelimiter = /:(.+)/;
	  cssText.split(listDelimiter).forEach(function (item) {
	    if (item) {
	      var tmp = item.split(propertyDelimiter);
	      tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim());
	    }
	  });
	  return res
	});

	// merge static and dynamic style data on the same vnode
	function normalizeStyleData (data) {
	  var style = normalizeStyleBinding(data.style);
	  // static style is pre-processed into an object during compilation
	  // and is always a fresh object, so it's safe to merge into it
	  return data.staticStyle
	    ? extend(data.staticStyle, style)
	    : style
	}

	// normalize possible array / string values into Object
	function normalizeStyleBinding (bindingStyle) {
	  if (Array.isArray(bindingStyle)) {
	    return toObject$1(bindingStyle)
	  }
	  if (typeof bindingStyle === 'string') {
	    return parseStyleText(bindingStyle)
	  }
	  return bindingStyle
	}

	/**
	 * parent component style should be after child's
	 * so that parent component's style could override it
	 */
	function getStyle (vnode, checkChild) {
	  var res = {};
	  var styleData;

	  if (checkChild) {
	    var childNode = vnode;
	    while (childNode.componentInstance) {
	      childNode = childNode.componentInstance._vnode;
	      if (
	        childNode && childNode.data &&
	        (styleData = normalizeStyleData(childNode.data))
	      ) {
	        extend(res, styleData);
	      }
	    }
	  }

	  if ((styleData = normalizeStyleData(vnode.data))) {
	    extend(res, styleData);
	  }

	  var parentNode = vnode;
	  while ((parentNode = parentNode.parent)) {
	    if (parentNode.data && (styleData = normalizeStyleData(parentNode.data))) {
	      extend(res, styleData);
	    }
	  }
	  return res
	}

	/*  */

	var cssVarRE = /^--/;
	var importantRE = /\s*!important$/;
	var setProp = function (el, name, val) {
	  /* istanbul ignore if */
	  if (cssVarRE.test(name)) {
	    el.style.setProperty(name, val);
	  } else if (importantRE.test(val)) {
	    el.style.setProperty(hyphenate(name), val.replace(importantRE, ''), 'important');
	  } else {
	    var normalizedName = normalize$1(name);
	    if (Array.isArray(val)) {
	      // Support values array created by autoprefixer, e.g.
	      // {display: ["-webkit-box", "-ms-flexbox", "flex"]}
	      // Set them one by one, and the browser will only set those it can recognize
	      for (var i = 0, len = val.length; i < len; i++) {
	        el.style[normalizedName] = val[i];
	      }
	    } else {
	      el.style[normalizedName] = val;
	    }
	  }
	};

	var vendorNames = ['Webkit', 'Moz', 'ms'];

	var emptyStyle;
	var normalize$1 = cached(function (prop) {
	  emptyStyle = emptyStyle || document.createElement('div').style;
	  prop = camelize(prop);
	  if (prop !== 'filter' && (prop in emptyStyle)) {
	    return prop
	  }
	  var capName = prop.charAt(0).toUpperCase() + prop.slice(1);
	  for (var i = 0; i < vendorNames.length; i++) {
	    var name = vendorNames[i] + capName;
	    if (name in emptyStyle) {
	      return name
	    }
	  }
	});

	function updateStyle (oldVnode, vnode) {
	  var data = vnode.data;
	  var oldData = oldVnode.data;

	  if (isUndef(data.staticStyle) && isUndef(data.style) &&
	    isUndef(oldData.staticStyle) && isUndef(oldData.style)
	  ) {
	    return
	  }

	  var cur, name;
	  var el = vnode.elm;
	  var oldStaticStyle = oldData.staticStyle;
	  var oldStyleBinding = oldData.normalizedStyle || oldData.style || {};

	  // if static style exists, stylebinding already merged into it when doing normalizeStyleData
	  var oldStyle = oldStaticStyle || oldStyleBinding;

	  var style = normalizeStyleBinding(vnode.data.style) || {};

	  // store normalized style under a different key for next diff
	  // make sure to clone it if it's reactive, since the user likely wants
	  // to mutate it.
	  vnode.data.normalizedStyle = isDef(style.__ob__)
	    ? extend({}, style)
	    : style;

	  var newStyle = getStyle(vnode, true);

	  for (name in oldStyle) {
	    if (isUndef(newStyle[name])) {
	      setProp(el, name, '');
	    }
	  }
	  for (name in newStyle) {
	    cur = newStyle[name];
	    if (cur !== oldStyle[name]) {
	      // ie9 setting to null has no effect, must use empty string
	      setProp(el, name, cur == null ? '' : cur);
	    }
	  }
	}

	var style = {
	  create: updateStyle,
	  update: updateStyle
	};

	/*  */

	var whitespaceRE = /\s+/;

	/**
	 * Add class with compatibility for SVG since classList is not supported on
	 * SVG elements in IE
	 */
	function addClass (el, cls) {
	  /* istanbul ignore if */
	  if (!cls || !(cls = cls.trim())) {
	    return
	  }

	  /* istanbul ignore else */
	  if (el.classList) {
	    if (cls.indexOf(' ') > -1) {
	      cls.split(whitespaceRE).forEach(function (c) { return el.classList.add(c); });
	    } else {
	      el.classList.add(cls);
	    }
	  } else {
	    var cur = " " + (el.getAttribute('class') || '') + " ";
	    if (cur.indexOf(' ' + cls + ' ') < 0) {
	      el.setAttribute('class', (cur + cls).trim());
	    }
	  }
	}

	/**
	 * Remove class with compatibility for SVG since classList is not supported on
	 * SVG elements in IE
	 */
	function removeClass (el, cls) {
	  /* istanbul ignore if */
	  if (!cls || !(cls = cls.trim())) {
	    return
	  }

	  /* istanbul ignore else */
	  if (el.classList) {
	    if (cls.indexOf(' ') > -1) {
	      cls.split(whitespaceRE).forEach(function (c) { return el.classList.remove(c); });
	    } else {
	      el.classList.remove(cls);
	    }
	    if (!el.classList.length) {
	      el.removeAttribute('class');
	    }
	  } else {
	    var cur = " " + (el.getAttribute('class') || '') + " ";
	    var tar = ' ' + cls + ' ';
	    while (cur.indexOf(tar) >= 0) {
	      cur = cur.replace(tar, ' ');
	    }
	    cur = cur.trim();
	    if (cur) {
	      el.setAttribute('class', cur);
	    } else {
	      el.removeAttribute('class');
	    }
	  }
	}

	/*  */

	function resolveTransition (def$$1) {
	  if (!def$$1) {
	    return
	  }
	  /* istanbul ignore else */
	  if (typeof def$$1 === 'object') {
	    var res = {};
	    if (def$$1.css !== false) {
	      extend(res, autoCssTransition(def$$1.name || 'v'));
	    }
	    extend(res, def$$1);
	    return res
	  } else if (typeof def$$1 === 'string') {
	    return autoCssTransition(def$$1)
	  }
	}

	var autoCssTransition = cached(function (name) {
	  return {
	    enterClass: (name + "-enter"),
	    enterToClass: (name + "-enter-to"),
	    enterActiveClass: (name + "-enter-active"),
	    leaveClass: (name + "-leave"),
	    leaveToClass: (name + "-leave-to"),
	    leaveActiveClass: (name + "-leave-active")
	  }
	});

	var hasTransition = inBrowser && !isIE9;
	var TRANSITION = 'transition';
	var ANIMATION = 'animation';

	// Transition property/event sniffing
	var transitionProp = 'transition';
	var transitionEndEvent = 'transitionend';
	var animationProp = 'animation';
	var animationEndEvent = 'animationend';
	if (hasTransition) {
	  /* istanbul ignore if */
	  if (window.ontransitionend === undefined &&
	    window.onwebkittransitionend !== undefined
	  ) {
	    transitionProp = 'WebkitTransition';
	    transitionEndEvent = 'webkitTransitionEnd';
	  }
	  if (window.onanimationend === undefined &&
	    window.onwebkitanimationend !== undefined
	  ) {
	    animationProp = 'WebkitAnimation';
	    animationEndEvent = 'webkitAnimationEnd';
	  }
	}

	// binding to window is necessary to make hot reload work in IE in strict mode
	var raf = inBrowser
	  ? window.requestAnimationFrame
	    ? window.requestAnimationFrame.bind(window)
	    : setTimeout
	  : /* istanbul ignore next */ function (fn) { return fn(); };

	function nextFrame (fn) {
	  raf(function () {
	    raf(fn);
	  });
	}

	function addTransitionClass (el, cls) {
	  var transitionClasses = el._transitionClasses || (el._transitionClasses = []);
	  if (transitionClasses.indexOf(cls) < 0) {
	    transitionClasses.push(cls);
	    addClass(el, cls);
	  }
	}

	function removeTransitionClass (el, cls) {
	  if (el._transitionClasses) {
	    remove(el._transitionClasses, cls);
	  }
	  removeClass(el, cls);
	}

	function whenTransitionEnds (
	  el,
	  expectedType,
	  cb
	) {
	  var ref = getTransitionInfo(el, expectedType);
	  var type = ref.type;
	  var timeout = ref.timeout;
	  var propCount = ref.propCount;
	  if (!type) { return cb() }
	  var event = type === TRANSITION ? transitionEndEvent : animationEndEvent;
	  var ended = 0;
	  var end = function () {
	    el.removeEventListener(event, onEnd);
	    cb();
	  };
	  var onEnd = function (e) {
	    if (e.target === el) {
	      if (++ended >= propCount) {
	        end();
	      }
	    }
	  };
	  setTimeout(function () {
	    if (ended < propCount) {
	      end();
	    }
	  }, timeout + 1);
	  el.addEventListener(event, onEnd);
	}

	var transformRE = /\b(transform|all)(,|$)/;

	function getTransitionInfo (el, expectedType) {
	  var styles = window.getComputedStyle(el);
	  // JSDOM may return undefined for transition properties
	  var transitionDelays = (styles[transitionProp + 'Delay'] || '').split(', ');
	  var transitionDurations = (styles[transitionProp + 'Duration'] || '').split(', ');
	  var transitionTimeout = getTimeout(transitionDelays, transitionDurations);
	  var animationDelays = (styles[animationProp + 'Delay'] || '').split(', ');
	  var animationDurations = (styles[animationProp + 'Duration'] || '').split(', ');
	  var animationTimeout = getTimeout(animationDelays, animationDurations);

	  var type;
	  var timeout = 0;
	  var propCount = 0;
	  /* istanbul ignore if */
	  if (expectedType === TRANSITION) {
	    if (transitionTimeout > 0) {
	      type = TRANSITION;
	      timeout = transitionTimeout;
	      propCount = transitionDurations.length;
	    }
	  } else if (expectedType === ANIMATION) {
	    if (animationTimeout > 0) {
	      type = ANIMATION;
	      timeout = animationTimeout;
	      propCount = animationDurations.length;
	    }
	  } else {
	    timeout = Math.max(transitionTimeout, animationTimeout);
	    type = timeout > 0
	      ? transitionTimeout > animationTimeout
	        ? TRANSITION
	        : ANIMATION
	      : null;
	    propCount = type
	      ? type === TRANSITION
	        ? transitionDurations.length
	        : animationDurations.length
	      : 0;
	  }
	  var hasTransform =
	    type === TRANSITION &&
	    transformRE.test(styles[transitionProp + 'Property']);
	  return {
	    type: type,
	    timeout: timeout,
	    propCount: propCount,
	    hasTransform: hasTransform
	  }
	}

	function getTimeout (delays, durations) {
	  /* istanbul ignore next */
	  while (delays.length < durations.length) {
	    delays = delays.concat(delays);
	  }

	  return Math.max.apply(null, durations.map(function (d, i) {
	    return toMs(d) + toMs(delays[i])
	  }))
	}

	// Old versions of Chromium (below 61.0.3163.100) formats floating pointer numbers
	// in a locale-dependent way, using a comma instead of a dot.
	// If comma is not replaced with a dot, the input will be rounded down (i.e. acting
	// as a floor function) causing unexpected behaviors
	function toMs (s) {
	  return Number(s.slice(0, -1).replace(',', '.')) * 1000
	}

	/*  */

	function enter (vnode, toggleDisplay) {
	  var el = vnode.elm;

	  // call leave callback now
	  if (isDef(el._leaveCb)) {
	    el._leaveCb.cancelled = true;
	    el._leaveCb();
	  }

	  var data = resolveTransition(vnode.data.transition);
	  if (isUndef(data)) {
	    return
	  }

	  /* istanbul ignore if */
	  if (isDef(el._enterCb) || el.nodeType !== 1) {
	    return
	  }

	  var css = data.css;
	  var type = data.type;
	  var enterClass = data.enterClass;
	  var enterToClass = data.enterToClass;
	  var enterActiveClass = data.enterActiveClass;
	  var appearClass = data.appearClass;
	  var appearToClass = data.appearToClass;
	  var appearActiveClass = data.appearActiveClass;
	  var beforeEnter = data.beforeEnter;
	  var enter = data.enter;
	  var afterEnter = data.afterEnter;
	  var enterCancelled = data.enterCancelled;
	  var beforeAppear = data.beforeAppear;
	  var appear = data.appear;
	  var afterAppear = data.afterAppear;
	  var appearCancelled = data.appearCancelled;
	  var duration = data.duration;

	  // activeInstance will always be the <transition> component managing this
	  // transition. One edge case to check is when the <transition> is placed
	  // as the root node of a child component. In that case we need to check
	  // <transition>'s parent for appear check.
	  var context = activeInstance;
	  var transitionNode = activeInstance.$vnode;
	  while (transitionNode && transitionNode.parent) {
	    context = transitionNode.context;
	    transitionNode = transitionNode.parent;
	  }

	  var isAppear = !context._isMounted || !vnode.isRootInsert;

	  if (isAppear && !appear && appear !== '') {
	    return
	  }

	  var startClass = isAppear && appearClass
	    ? appearClass
	    : enterClass;
	  var activeClass = isAppear && appearActiveClass
	    ? appearActiveClass
	    : enterActiveClass;
	  var toClass = isAppear && appearToClass
	    ? appearToClass
	    : enterToClass;

	  var beforeEnterHook = isAppear
	    ? (beforeAppear || beforeEnter)
	    : beforeEnter;
	  var enterHook = isAppear
	    ? (typeof appear === 'function' ? appear : enter)
	    : enter;
	  var afterEnterHook = isAppear
	    ? (afterAppear || afterEnter)
	    : afterEnter;
	  var enterCancelledHook = isAppear
	    ? (appearCancelled || enterCancelled)
	    : enterCancelled;

	  var explicitEnterDuration = toNumber$1(
	    isObject$2(duration)
	      ? duration.enter
	      : duration
	  );

	  if (explicitEnterDuration != null) {
	    checkDuration(explicitEnterDuration, 'enter', vnode);
	  }

	  var expectsCSS = css !== false && !isIE9;
	  var userWantsControl = getHookArgumentsLength(enterHook);

	  var cb = el._enterCb = once(function () {
	    if (expectsCSS) {
	      removeTransitionClass(el, toClass);
	      removeTransitionClass(el, activeClass);
	    }
	    if (cb.cancelled) {
	      if (expectsCSS) {
	        removeTransitionClass(el, startClass);
	      }
	      enterCancelledHook && enterCancelledHook(el);
	    } else {
	      afterEnterHook && afterEnterHook(el);
	    }
	    el._enterCb = null;
	  });

	  if (!vnode.data.show) {
	    // remove pending leave element on enter by injecting an insert hook
	    mergeVNodeHook(vnode, 'insert', function () {
	      var parent = el.parentNode;
	      var pendingNode = parent && parent._pending && parent._pending[vnode.key];
	      if (pendingNode &&
	        pendingNode.tag === vnode.tag &&
	        pendingNode.elm._leaveCb
	      ) {
	        pendingNode.elm._leaveCb();
	      }
	      enterHook && enterHook(el, cb);
	    });
	  }

	  // start enter transition
	  beforeEnterHook && beforeEnterHook(el);
	  if (expectsCSS) {
	    addTransitionClass(el, startClass);
	    addTransitionClass(el, activeClass);
	    nextFrame(function () {
	      removeTransitionClass(el, startClass);
	      if (!cb.cancelled) {
	        addTransitionClass(el, toClass);
	        if (!userWantsControl) {
	          if (isValidDuration(explicitEnterDuration)) {
	            setTimeout(cb, explicitEnterDuration);
	          } else {
	            whenTransitionEnds(el, type, cb);
	          }
	        }
	      }
	    });
	  }

	  if (vnode.data.show) {
	    toggleDisplay && toggleDisplay();
	    enterHook && enterHook(el, cb);
	  }

	  if (!expectsCSS && !userWantsControl) {
	    cb();
	  }
	}

	function leave (vnode, rm) {
	  var el = vnode.elm;

	  // call enter callback now
	  if (isDef(el._enterCb)) {
	    el._enterCb.cancelled = true;
	    el._enterCb();
	  }

	  var data = resolveTransition(vnode.data.transition);
	  if (isUndef(data) || el.nodeType !== 1) {
	    return rm()
	  }

	  /* istanbul ignore if */
	  if (isDef(el._leaveCb)) {
	    return
	  }

	  var css = data.css;
	  var type = data.type;
	  var leaveClass = data.leaveClass;
	  var leaveToClass = data.leaveToClass;
	  var leaveActiveClass = data.leaveActiveClass;
	  var beforeLeave = data.beforeLeave;
	  var leave = data.leave;
	  var afterLeave = data.afterLeave;
	  var leaveCancelled = data.leaveCancelled;
	  var delayLeave = data.delayLeave;
	  var duration = data.duration;

	  var expectsCSS = css !== false && !isIE9;
	  var userWantsControl = getHookArgumentsLength(leave);

	  var explicitLeaveDuration = toNumber$1(
	    isObject$2(duration)
	      ? duration.leave
	      : duration
	  );

	  if (isDef(explicitLeaveDuration)) {
	    checkDuration(explicitLeaveDuration, 'leave', vnode);
	  }

	  var cb = el._leaveCb = once(function () {
	    if (el.parentNode && el.parentNode._pending) {
	      el.parentNode._pending[vnode.key] = null;
	    }
	    if (expectsCSS) {
	      removeTransitionClass(el, leaveToClass);
	      removeTransitionClass(el, leaveActiveClass);
	    }
	    if (cb.cancelled) {
	      if (expectsCSS) {
	        removeTransitionClass(el, leaveClass);
	      }
	      leaveCancelled && leaveCancelled(el);
	    } else {
	      rm();
	      afterLeave && afterLeave(el);
	    }
	    el._leaveCb = null;
	  });

	  if (delayLeave) {
	    delayLeave(performLeave);
	  } else {
	    performLeave();
	  }

	  function performLeave () {
	    // the delayed leave may have already been cancelled
	    if (cb.cancelled) {
	      return
	    }
	    // record leaving element
	    if (!vnode.data.show && el.parentNode) {
	      (el.parentNode._pending || (el.parentNode._pending = {}))[(vnode.key)] = vnode;
	    }
	    beforeLeave && beforeLeave(el);
	    if (expectsCSS) {
	      addTransitionClass(el, leaveClass);
	      addTransitionClass(el, leaveActiveClass);
	      nextFrame(function () {
	        removeTransitionClass(el, leaveClass);
	        if (!cb.cancelled) {
	          addTransitionClass(el, leaveToClass);
	          if (!userWantsControl) {
	            if (isValidDuration(explicitLeaveDuration)) {
	              setTimeout(cb, explicitLeaveDuration);
	            } else {
	              whenTransitionEnds(el, type, cb);
	            }
	          }
	        }
	      });
	    }
	    leave && leave(el, cb);
	    if (!expectsCSS && !userWantsControl) {
	      cb();
	    }
	  }
	}

	// only used in dev mode
	function checkDuration (val, name, vnode) {
	  if (typeof val !== 'number') {
	    warn(
	      "<transition> explicit " + name + " duration is not a valid number - " +
	      "got " + (JSON.stringify(val)) + ".",
	      vnode.context
	    );
	  } else if (isNaN(val)) {
	    warn(
	      "<transition> explicit " + name + " duration is NaN - " +
	      'the duration expression might be incorrect.',
	      vnode.context
	    );
	  }
	}

	function isValidDuration (val) {
	  return typeof val === 'number' && !isNaN(val)
	}

	/**
	 * Normalize a transition hook's argument length. The hook may be:
	 * - a merged hook (invoker) with the original in .fns
	 * - a wrapped component method (check ._length)
	 * - a plain function (.length)
	 */
	function getHookArgumentsLength (fn) {
	  if (isUndef(fn)) {
	    return false
	  }
	  var invokerFns = fn.fns;
	  if (isDef(invokerFns)) {
	    // invoker
	    return getHookArgumentsLength(
	      Array.isArray(invokerFns)
	        ? invokerFns[0]
	        : invokerFns
	    )
	  } else {
	    return (fn._length || fn.length) > 1
	  }
	}

	function _enter (_, vnode) {
	  if (vnode.data.show !== true) {
	    enter(vnode);
	  }
	}

	var transition = inBrowser ? {
	  create: _enter,
	  activate: _enter,
	  remove: function remove$$1 (vnode, rm) {
	    /* istanbul ignore else */
	    if (vnode.data.show !== true) {
	      leave(vnode, rm);
	    } else {
	      rm();
	    }
	  }
	} : {};

	var platformModules = [
	  attrs,
	  klass,
	  events,
	  domProps,
	  style,
	  transition
	];

	/*  */

	// the directive module should be applied last, after all
	// built-in modules have been applied.
	var modules = platformModules.concat(baseModules);

	var patch = createPatchFunction({ nodeOps: nodeOps, modules: modules });

	/**
	 * Not type checking this file because flow doesn't like attaching
	 * properties to Elements.
	 */

	/* istanbul ignore if */
	if (isIE9) {
	  // http://www.matts411.com/post/internet-explorer-9-oninput/
	  document.addEventListener('selectionchange', function () {
	    var el = document.activeElement;
	    if (el && el.vmodel) {
	      trigger(el, 'input');
	    }
	  });
	}

	var directive = {
	  inserted: function inserted (el, binding, vnode, oldVnode) {
	    if (vnode.tag === 'select') {
	      // #6903
	      if (oldVnode.elm && !oldVnode.elm._vOptions) {
	        mergeVNodeHook(vnode, 'postpatch', function () {
	          directive.componentUpdated(el, binding, vnode);
	        });
	      } else {
	        setSelected(el, binding, vnode.context);
	      }
	      el._vOptions = [].map.call(el.options, getValue);
	    } else if (vnode.tag === 'textarea' || isTextInputType(el.type)) {
	      el._vModifiers = binding.modifiers;
	      if (!binding.modifiers.lazy) {
	        el.addEventListener('compositionstart', onCompositionStart);
	        el.addEventListener('compositionend', onCompositionEnd);
	        // Safari < 10.2 & UIWebView doesn't fire compositionend when
	        // switching focus before confirming composition choice
	        // this also fixes the issue where some browsers e.g. iOS Chrome
	        // fires "change" instead of "input" on autocomplete.
	        el.addEventListener('change', onCompositionEnd);
	        /* istanbul ignore if */
	        if (isIE9) {
	          el.vmodel = true;
	        }
	      }
	    }
	  },

	  componentUpdated: function componentUpdated (el, binding, vnode) {
	    if (vnode.tag === 'select') {
	      setSelected(el, binding, vnode.context);
	      // in case the options rendered by v-for have changed,
	      // it's possible that the value is out-of-sync with the rendered options.
	      // detect such cases and filter out values that no longer has a matching
	      // option in the DOM.
	      var prevOptions = el._vOptions;
	      var curOptions = el._vOptions = [].map.call(el.options, getValue);
	      if (curOptions.some(function (o, i) { return !looseEqual(o, prevOptions[i]); })) {
	        // trigger change event if
	        // no matching option found for at least one value
	        var needReset = el.multiple
	          ? binding.value.some(function (v) { return hasNoMatchingOption(v, curOptions); })
	          : binding.value !== binding.oldValue && hasNoMatchingOption(binding.value, curOptions);
	        if (needReset) {
	          trigger(el, 'change');
	        }
	      }
	    }
	  }
	};

	function setSelected (el, binding, vm) {
	  actuallySetSelected(el, binding, vm);
	  /* istanbul ignore if */
	  if (isIE || isEdge) {
	    setTimeout(function () {
	      actuallySetSelected(el, binding, vm);
	    }, 0);
	  }
	}

	function actuallySetSelected (el, binding, vm) {
	  var value = binding.value;
	  var isMultiple = el.multiple;
	  if (isMultiple && !Array.isArray(value)) {
	    warn(
	      "<select multiple v-model=\"" + (binding.expression) + "\"> " +
	      "expects an Array value for its binding, but got " + (Object.prototype.toString.call(value).slice(8, -1)),
	      vm
	    );
	    return
	  }
	  var selected, option;
	  for (var i = 0, l = el.options.length; i < l; i++) {
	    option = el.options[i];
	    if (isMultiple) {
	      selected = looseIndexOf(value, getValue(option)) > -1;
	      if (option.selected !== selected) {
	        option.selected = selected;
	      }
	    } else {
	      if (looseEqual(getValue(option), value)) {
	        if (el.selectedIndex !== i) {
	          el.selectedIndex = i;
	        }
	        return
	      }
	    }
	  }
	  if (!isMultiple) {
	    el.selectedIndex = -1;
	  }
	}

	function hasNoMatchingOption (value, options) {
	  return options.every(function (o) { return !looseEqual(o, value); })
	}

	function getValue (option) {
	  return '_value' in option
	    ? option._value
	    : option.value
	}

	function onCompositionStart (e) {
	  e.target.composing = true;
	}

	function onCompositionEnd (e) {
	  // prevent triggering an input event for no reason
	  if (!e.target.composing) { return }
	  e.target.composing = false;
	  trigger(e.target, 'input');
	}

	function trigger (el, type) {
	  var e = document.createEvent('HTMLEvents');
	  e.initEvent(type, true, true);
	  el.dispatchEvent(e);
	}

	/*  */

	// recursively search for possible transition defined inside the component root
	function locateNode (vnode) {
	  return vnode.componentInstance && (!vnode.data || !vnode.data.transition)
	    ? locateNode(vnode.componentInstance._vnode)
	    : vnode
	}

	var show = {
	  bind: function bind (el, ref, vnode) {
	    var value = ref.value;

	    vnode = locateNode(vnode);
	    var transition$$1 = vnode.data && vnode.data.transition;
	    var originalDisplay = el.__vOriginalDisplay =
	      el.style.display === 'none' ? '' : el.style.display;
	    if (value && transition$$1) {
	      vnode.data.show = true;
	      enter(vnode, function () {
	        el.style.display = originalDisplay;
	      });
	    } else {
	      el.style.display = value ? originalDisplay : 'none';
	    }
	  },

	  update: function update (el, ref, vnode) {
	    var value = ref.value;
	    var oldValue = ref.oldValue;

	    /* istanbul ignore if */
	    if (!value === !oldValue) { return }
	    vnode = locateNode(vnode);
	    var transition$$1 = vnode.data && vnode.data.transition;
	    if (transition$$1) {
	      vnode.data.show = true;
	      if (value) {
	        enter(vnode, function () {
	          el.style.display = el.__vOriginalDisplay;
	        });
	      } else {
	        leave(vnode, function () {
	          el.style.display = 'none';
	        });
	      }
	    } else {
	      el.style.display = value ? el.__vOriginalDisplay : 'none';
	    }
	  },

	  unbind: function unbind (
	    el,
	    binding,
	    vnode,
	    oldVnode,
	    isDestroy
	  ) {
	    if (!isDestroy) {
	      el.style.display = el.__vOriginalDisplay;
	    }
	  }
	};

	var platformDirectives = {
	  model: directive,
	  show: show
	};

	/*  */

	var transitionProps = {
	  name: String,
	  appear: Boolean,
	  css: Boolean,
	  mode: String,
	  type: String,
	  enterClass: String,
	  leaveClass: String,
	  enterToClass: String,
	  leaveToClass: String,
	  enterActiveClass: String,
	  leaveActiveClass: String,
	  appearClass: String,
	  appearActiveClass: String,
	  appearToClass: String,
	  duration: [Number, String, Object]
	};

	// in case the child is also an abstract component, e.g. <keep-alive>
	// we want to recursively retrieve the real component to be rendered
	function getRealChild (vnode) {
	  var compOptions = vnode && vnode.componentOptions;
	  if (compOptions && compOptions.Ctor.options.abstract) {
	    return getRealChild(getFirstComponentChild(compOptions.children))
	  } else {
	    return vnode
	  }
	}

	function extractTransitionData (comp) {
	  var data = {};
	  var options = comp.$options;
	  // props
	  for (var key in options.propsData) {
	    data[key] = comp[key];
	  }
	  // events.
	  // extract listeners and pass them directly to the transition methods
	  var listeners = options._parentListeners;
	  for (var key$1 in listeners) {
	    data[camelize(key$1)] = listeners[key$1];
	  }
	  return data
	}

	function placeholder (h, rawChild) {
	  if (/\d-keep-alive$/.test(rawChild.tag)) {
	    return h('keep-alive', {
	      props: rawChild.componentOptions.propsData
	    })
	  }
	}

	function hasParentTransition (vnode) {
	  while ((vnode = vnode.parent)) {
	    if (vnode.data.transition) {
	      return true
	    }
	  }
	}

	function isSameChild (child, oldChild) {
	  return oldChild.key === child.key && oldChild.tag === child.tag
	}

	var isNotTextNode = function (c) { return c.tag || isAsyncPlaceholder(c); };

	var isVShowDirective = function (d) { return d.name === 'show'; };

	var Transition = {
	  name: 'transition',
	  props: transitionProps,
	  abstract: true,

	  render: function render (h) {
	    var this$1 = this;

	    var children = this.$slots.default;
	    if (!children) {
	      return
	    }

	    // filter out text nodes (possible whitespaces)
	    children = children.filter(isNotTextNode);
	    /* istanbul ignore if */
	    if (!children.length) {
	      return
	    }

	    // warn multiple elements
	    if (children.length > 1) {
	      warn(
	        '<transition> can only be used on a single element. Use ' +
	        '<transition-group> for lists.',
	        this.$parent
	      );
	    }

	    var mode = this.mode;

	    // warn invalid mode
	    if (mode && mode !== 'in-out' && mode !== 'out-in'
	    ) {
	      warn(
	        'invalid <transition> mode: ' + mode,
	        this.$parent
	      );
	    }

	    var rawChild = children[0];

	    // if this is a component root node and the component's
	    // parent container node also has transition, skip.
	    if (hasParentTransition(this.$vnode)) {
	      return rawChild
	    }

	    // apply transition data to child
	    // use getRealChild() to ignore abstract components e.g. keep-alive
	    var child = getRealChild(rawChild);
	    /* istanbul ignore if */
	    if (!child) {
	      return rawChild
	    }

	    if (this._leaving) {
	      return placeholder(h, rawChild)
	    }

	    // ensure a key that is unique to the vnode type and to this transition
	    // component instance. This key will be used to remove pending leaving nodes
	    // during entering.
	    var id = "__transition-" + (this._uid) + "-";
	    child.key = child.key == null
	      ? child.isComment
	        ? id + 'comment'
	        : id + child.tag
	      : isPrimitive(child.key)
	        ? (String(child.key).indexOf(id) === 0 ? child.key : id + child.key)
	        : child.key;

	    var data = (child.data || (child.data = {})).transition = extractTransitionData(this);
	    var oldRawChild = this._vnode;
	    var oldChild = getRealChild(oldRawChild);

	    // mark v-show
	    // so that the transition module can hand over the control to the directive
	    if (child.data.directives && child.data.directives.some(isVShowDirective)) {
	      child.data.show = true;
	    }

	    if (
	      oldChild &&
	      oldChild.data &&
	      !isSameChild(child, oldChild) &&
	      !isAsyncPlaceholder(oldChild) &&
	      // #6687 component root is a comment node
	      !(oldChild.componentInstance && oldChild.componentInstance._vnode.isComment)
	    ) {
	      // replace old child transition data with fresh one
	      // important for dynamic transitions!
	      var oldData = oldChild.data.transition = extend({}, data);
	      // handle transition mode
	      if (mode === 'out-in') {
	        // return placeholder node and queue update when leave finishes
	        this._leaving = true;
	        mergeVNodeHook(oldData, 'afterLeave', function () {
	          this$1._leaving = false;
	          this$1.$forceUpdate();
	        });
	        return placeholder(h, rawChild)
	      } else if (mode === 'in-out') {
	        if (isAsyncPlaceholder(child)) {
	          return oldRawChild
	        }
	        var delayedLeave;
	        var performLeave = function () { delayedLeave(); };
	        mergeVNodeHook(data, 'afterEnter', performLeave);
	        mergeVNodeHook(data, 'enterCancelled', performLeave);
	        mergeVNodeHook(oldData, 'delayLeave', function (leave) { delayedLeave = leave; });
	      }
	    }

	    return rawChild
	  }
	};

	/*  */

	var props = extend({
	  tag: String,
	  moveClass: String
	}, transitionProps);

	delete props.mode;

	var TransitionGroup = {
	  props: props,

	  beforeMount: function beforeMount () {
	    var this$1 = this;

	    var update = this._update;
	    this._update = function (vnode, hydrating) {
	      var restoreActiveInstance = setActiveInstance(this$1);
	      // force removing pass
	      this$1.__patch__(
	        this$1._vnode,
	        this$1.kept,
	        false, // hydrating
	        true // removeOnly (!important, avoids unnecessary moves)
	      );
	      this$1._vnode = this$1.kept;
	      restoreActiveInstance();
	      update.call(this$1, vnode, hydrating);
	    };
	  },

	  render: function render (h) {
	    var tag = this.tag || this.$vnode.data.tag || 'span';
	    var map = Object.create(null);
	    var prevChildren = this.prevChildren = this.children;
	    var rawChildren = this.$slots.default || [];
	    var children = this.children = [];
	    var transitionData = extractTransitionData(this);

	    for (var i = 0; i < rawChildren.length; i++) {
	      var c = rawChildren[i];
	      if (c.tag) {
	        if (c.key != null && String(c.key).indexOf('__vlist') !== 0) {
	          children.push(c);
	          map[c.key] = c
	          ;(c.data || (c.data = {})).transition = transitionData;
	        } else {
	          var opts = c.componentOptions;
	          var name = opts ? (opts.Ctor.options.name || opts.tag || '') : c.tag;
	          warn(("<transition-group> children must be keyed: <" + name + ">"));
	        }
	      }
	    }

	    if (prevChildren) {
	      var kept = [];
	      var removed = [];
	      for (var i$1 = 0; i$1 < prevChildren.length; i$1++) {
	        var c$1 = prevChildren[i$1];
	        c$1.data.transition = transitionData;
	        c$1.data.pos = c$1.elm.getBoundingClientRect();
	        if (map[c$1.key]) {
	          kept.push(c$1);
	        } else {
	          removed.push(c$1);
	        }
	      }
	      this.kept = h(tag, null, kept);
	      this.removed = removed;
	    }

	    return h(tag, null, children)
	  },

	  updated: function updated () {
	    var children = this.prevChildren;
	    var moveClass = this.moveClass || ((this.name || 'v') + '-move');
	    if (!children.length || !this.hasMove(children[0].elm, moveClass)) {
	      return
	    }

	    // we divide the work into three loops to avoid mixing DOM reads and writes
	    // in each iteration - which helps prevent layout thrashing.
	    children.forEach(callPendingCbs);
	    children.forEach(recordPosition);
	    children.forEach(applyTranslation);

	    // force reflow to put everything in position
	    // assign to this to avoid being removed in tree-shaking
	    // $flow-disable-line
	    this._reflow = document.body.offsetHeight;

	    children.forEach(function (c) {
	      if (c.data.moved) {
	        var el = c.elm;
	        var s = el.style;
	        addTransitionClass(el, moveClass);
	        s.transform = s.WebkitTransform = s.transitionDuration = '';
	        el.addEventListener(transitionEndEvent, el._moveCb = function cb (e) {
	          if (e && e.target !== el) {
	            return
	          }
	          if (!e || /transform$/.test(e.propertyName)) {
	            el.removeEventListener(transitionEndEvent, cb);
	            el._moveCb = null;
	            removeTransitionClass(el, moveClass);
	          }
	        });
	      }
	    });
	  },

	  methods: {
	    hasMove: function hasMove (el, moveClass) {
	      /* istanbul ignore if */
	      if (!hasTransition) {
	        return false
	      }
	      /* istanbul ignore if */
	      if (this._hasMove) {
	        return this._hasMove
	      }
	      // Detect whether an element with the move class applied has
	      // CSS transitions. Since the element may be inside an entering
	      // transition at this very moment, we make a clone of it and remove
	      // all other transition classes applied to ensure only the move class
	      // is applied.
	      var clone = el.cloneNode();
	      if (el._transitionClasses) {
	        el._transitionClasses.forEach(function (cls) { removeClass(clone, cls); });
	      }
	      addClass(clone, moveClass);
	      clone.style.display = 'none';
	      this.$el.appendChild(clone);
	      var info = getTransitionInfo(clone);
	      this.$el.removeChild(clone);
	      return (this._hasMove = info.hasTransform)
	    }
	  }
	};

	function callPendingCbs (c) {
	  /* istanbul ignore if */
	  if (c.elm._moveCb) {
	    c.elm._moveCb();
	  }
	  /* istanbul ignore if */
	  if (c.elm._enterCb) {
	    c.elm._enterCb();
	  }
	}

	function recordPosition (c) {
	  c.data.newPos = c.elm.getBoundingClientRect();
	}

	function applyTranslation (c) {
	  var oldPos = c.data.pos;
	  var newPos = c.data.newPos;
	  var dx = oldPos.left - newPos.left;
	  var dy = oldPos.top - newPos.top;
	  if (dx || dy) {
	    c.data.moved = true;
	    var s = c.elm.style;
	    s.transform = s.WebkitTransform = "translate(" + dx + "px," + dy + "px)";
	    s.transitionDuration = '0s';
	  }
	}

	var platformComponents = {
	  Transition: Transition,
	  TransitionGroup: TransitionGroup
	};

	/*  */

	// install platform specific utils
	Vue.config.mustUseProp = mustUseProp;
	Vue.config.isReservedTag = isReservedTag;
	Vue.config.isReservedAttr = isReservedAttr;
	Vue.config.getTagNamespace = getTagNamespace;
	Vue.config.isUnknownElement = isUnknownElement;

	// install platform runtime directives & components
	extend(Vue.options.directives, platformDirectives);
	extend(Vue.options.components, platformComponents);

	// install platform patch function
	Vue.prototype.__patch__ = inBrowser ? patch : noop;

	// public mount method
	Vue.prototype.$mount = function (
	  el,
	  hydrating
	) {
	  el = el && inBrowser ? query(el) : undefined;
	  return mountComponent(this, el, hydrating)
	};

	// devtools global hook
	/* istanbul ignore next */
	if (inBrowser) {
	  setTimeout(function () {
	    if (config.devtools) {
	      if (devtools) {
	        devtools.emit('init', Vue);
	      } else {
	        console[console.info ? 'info' : 'log'](
	          'Download the Vue Devtools extension for a better development experience:\n' +
	          'https://github.com/vuejs/vue-devtools'
	        );
	      }
	    }
	    if (config.productionTip !== false &&
	      typeof console !== 'undefined'
	    ) {
	      console[console.info ? 'info' : 'log'](
	        "You are running Vue in development mode.\n" +
	        "Make sure to turn on production mode when deploying for production.\n" +
	        "See more tips at https://vuejs.org/guide/deployment.html"
	      );
	    }
	  }, 0);
	}

	var EventBus =
	/*#__PURE__*/
	function (_Vue) {
	  _inherits(EventBus, _Vue);

	  function EventBus() {
	    _classCallCheck(this, EventBus);

	    return _possibleConstructorReturn(this, _getPrototypeOf(EventBus).apply(this, arguments));
	  }

	  _createClass(EventBus, [{
	    key: "$getEventsBound",
	    value: function $getEventsBound() {
	      return this.eventsBound;
	    } // Override Vue's $emit to call a logger for any event emitted.

	  }, {
	    key: "$emit",
	    value: function $emit(event) {
	      var _console$ls, _get2;

	      for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
	        args[_key - 1] = arguments[_key];
	      }

	      (_console$ls = console.ls).log.apply(_console$ls, ["Emitting -> ", event].concat(args));

	      if (this.eventsBound != undefined && this.eventsBound[event] != undefined) {
	        this.eventsBound[event].forEach(function (element) {
	          element[0].apply(element, args);
	        });
	      }

	      return (_get2 = _get(_getPrototypeOf(EventBus.prototype), "$emit", this)).call.apply(_get2, [this, event].concat(args));
	    } // Override Vue's $emit to call a logger for any event bound.

	  }, {
	    key: "$on",
	    value: function $on(event) {
	      var _console$ls2, _get3;

	      this.eventsBound = this.eventsBound || {};
	      this.eventsBound[event] = this.eventsBound[event] || [];

	      for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
	        args[_key2 - 1] = arguments[_key2];
	      }

	      this.eventsBound[event].push(args);

	      (_console$ls2 = console.ls).log.apply(_console$ls2, ["Binding -> ", event].concat(args));

	      return (_get3 = _get(_getPrototypeOf(EventBus.prototype), "$emit", this)).call.apply(_get3, [this, event].concat(args));
	    }
	  }]);

	  return EventBus;
	}(Vue);

	window.EventBus = window.EventBus || new EventBus({
	  name: "EventBus"
	});
	var EventBus$1 = window.EventBus;

	/*
	 * JavaScript functions for LimeSurvey administrator
	 *
	 * This file is part of LimeSurvey
	 * Copyright (C) 2007-2013 The LimeSurvey Project Team / Carsten Schmitz
	 * All rights reserved.
	 * License: GNU/GPL License v2 or later, see LICENSE.php
	 * LimeSurvey is free software. This version may have been modified pursuant
	 * to the GNU General Public License, and as distributed it includes or
	 * is derivative of works licensed under the GNU General Public License or
	 * other free or open source software licenses.
	 * See COPYRIGHT.php for copyright notices and details.
	 */
	//import the ES6 polyfills for IE11
	//Define LS Namespace
	window.LS = window.LS || {}; //import css/scss to be seperately compiled

	var AdminCore = function AdminCore() {
	  //Singelton Pattern -> the AdminCore functions can only be nound once.
	  if (_typeof(window.LS.adminCore) === 'object') {
	    window.LS.adminCore.refresh();
	    return;
	  }

	  var eventsBound = {
	    document: []
	  };

	  var debug = function debug() {
	    return {
	      eventsBound: eventsBound,
	      windowLS: window.LS
	    };
	  };

	  var onLoadRegister = function onLoadRegister() {
	    globalStartUpMethods.bootstrapping();
	    onExistBinding();
	    appendToLoad(function () {
	      adminCoreLSConsole.log('TRIGGERWARNING', 'Document ready triggered');
	    }, 'ready');
	    appendToLoad(function () {
	      adminCoreLSConsole.log('TRIGGERWARNING', 'Document scriptcomplete triggered');
	    }, 'pjax:scriptcomplete');
	    appendToLoad(saveController);
	    appendToLoad(loadMethods);
	    appendToLoad(bindAdvancedAttribute);
	    appendToLoad(confirmDeletemodal);
	    appendToLoad(panelClickable);
	    appendToLoad(panelsAnimation, null, null, 200);
	    appendToLoad(notificationSystem.initNotification);
	    appendToLoad(activateSubSubMenues);
	    appendToLoad(globalWindowMethods.fixAccordionPosition);
	  },
	      appendToLoad = function appendToLoad(fn, event, root, delay) {
	    event = event || 'pjax:scriptcomplete ready';
	    root = root || 'document';
	    delay = delay || 0;
	    adminCoreLSConsole.log('appendToLoad', {
	      'type': _typeof(fn),
	      'fn': fn
	    });
	    eventsBound[root] = eventsBound[root] || [];

	    if (lodash.find(eventsBound[root], {
	      fn: fn,
	      event: event,
	      root: root,
	      delay: delay
	    }) === undefined) {
	      eventsBound[root].push({
	        fn: fn,
	        event: event,
	        root: root,
	        delay: delay
	      });

	      var events = lodash.map(event.split(' '), function (event) {
	        return event !== 'ready' ? event + '.admincore' : 'ready';
	      });

	      var call = delay > 0 ? function () {
	        window.setTimeout(fn, delay);
	      } : fn;

	      if (root == 'document') {
	        $(document).on(events.join(' '), call);
	      } else {
	        $(root).on(events.join(' '), call);
	      }
	    }
	  },
	      refreshAdminCore = function refreshAdminCore() {
	    lodash.each(eventsBound, function (eventMap, root) {
	      lodash.each(eventMap, function (evItem) {
	        var events = lodash.map(evItem.event.split(' '), function (event) {
	          return event !== 'ready' ? event + '.admincore' : '';
	        });

	        var call = evItem.delay > 0 ? function () {
	          window.setTimeout(evItem.fn, evItem.delay);
	        } : evItem.fn;

	        if (evItem.root !== 'document') {
	          $(evItem.root).off(events.join(' '));
	          $(evItem.root).on(events.join(' '), call);
	        }
	      });
	    });

	    onExistBinding();
	    adminCoreLSConsole.trace("Refreshed Admin core methods");
	  },
	      addToNamespace = function addToNamespace(object) {
	    var name = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : "globalAddition";
	    window.LS[name] = window.LS[name] || {};
	    window.LS[name] = lodash.merge(window.LS[name], object);
	  },
	      setNameSpace = function setNameSpace() {
	    var BaseNameSpace = {
	      adminCore: {
	        refresh: refreshAdminCore,
	        onload: onLoadRegister,
	        appendToLoad: appendToLoad,
	        addToNamespace: addToNamespace
	      }
	    };
	    var pageLoadActions = {
	      saveBindings: saveController,
	      confirmationModal: loadMethods,
	      questionEdit: bindAdvancedAttribute,
	      confirmDeletemodal: confirmDeletemodal,
	      panelClickable: panelClickable,
	      panelsAnimation: panelsAnimation,
	      initNotification: notificationSystem.initNotification
	    };

	    var LsNameSpace = lodash.merge(BaseNameSpace, globalWindowMethods, parameterGlobals, AjaxHelper, {
	      notifyFader: notifyFader
	    }, {
	      createUrl: createUrl
	    }, {
	      EventBus: EventBus$1
	    }, subquestionAndAnswersGlobalMethods, notificationSystem, gridAction);
	    /*
	    * Set the namespace to the global variable LS
	    */


	    window.LS = lodash.merge(window.LS, LsNameSpace, {
	      pageLoadActions: pageLoadActions,
	      ld: lodash,
	      debug: debug
	    });
	    /* Set a variable to test if browser have HTML5 form ability
	    * Need to be replaced by some polyfills see #8009
	    */

	    window.hasFormValidation = typeof document.createElement('input').checkValidity == 'function';
	  };

	  setNameSpace();
	  onLoadRegister();
	  adminCoreLSConsole.log("AdminCore", eventsBound);
	};

	AdminCore();

}));
