' + func(text) + '
';\n * });\n *\n * p('fred, barney, & pebbles');\n * // => 'fred, barney, & pebbles
'\n */\n function wrap(value, wrapper) {\n return partial(castFunction(wrapper), value);\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Casts `value` as an array if it's not one.\n *\n * @static\n * @memberOf _\n * @since 4.4.0\n * @category Lang\n * @param {*} value The value to inspect.\n * @returns {Array} Returns the cast array.\n * @example\n *\n * _.castArray(1);\n * // => [1]\n *\n * _.castArray({ 'a': 1 });\n * // => [{ 'a': 1 }]\n *\n * _.castArray('abc');\n * // => ['abc']\n *\n * _.castArray(null);\n * // => [null]\n *\n * _.castArray(undefined);\n * // => [undefined]\n *\n * _.castArray();\n * // => []\n *\n * var array = [1, 2, 3];\n * console.log(_.castArray(array) === array);\n * // => true\n */\n function castArray() {\n if (!arguments.length) {\n return [];\n }\n var value = arguments[0];\n return isArray(value) ? value : [value];\n }\n\n /**\n * Creates a shallow clone of `value`.\n *\n * **Note:** This method is loosely based on the\n * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)\n * and supports cloning arrays, array buffers, booleans, date objects, maps,\n * numbers, `Object` objects, regexes, sets, strings, symbols, and typed\n * arrays. The own enumerable properties of `arguments` objects are cloned\n * as plain objects. An empty object is returned for uncloneable values such\n * as error objects, functions, DOM nodes, and WeakMaps.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to clone.\n * @returns {*} Returns the cloned value.\n * @see _.cloneDeep\n * @example\n *\n * var objects = [{ 'a': 1 }, { 'b': 2 }];\n *\n * var shallow = _.clone(objects);\n * console.log(shallow[0] === objects[0]);\n * // => true\n */\n function clone(value) {\n return baseClone(value, CLONE_SYMBOLS_FLAG);\n }\n\n /**\n * This method is like `_.clone` except that it accepts `customizer` which\n * is invoked to produce the cloned value. If `customizer` returns `undefined`,\n * cloning is handled by the method instead. The `customizer` is invoked with\n * up to four arguments; (value [, index|key, object, stack]).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to clone.\n * @param {Function} [customizer] The function to customize cloning.\n * @returns {*} Returns the cloned value.\n * @see _.cloneDeepWith\n * @example\n *\n * function customizer(value) {\n * if (_.isElement(value)) {\n * return value.cloneNode(false);\n * }\n * }\n *\n * var el = _.cloneWith(document.body, customizer);\n *\n * console.log(el === document.body);\n * // => false\n * console.log(el.nodeName);\n * // => 'BODY'\n * console.log(el.childNodes.length);\n * // => 0\n */\n function cloneWith(value, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);\n }\n\n /**\n * This method is like `_.clone` except that it recursively clones `value`.\n *\n * @static\n * @memberOf _\n * @since 1.0.0\n * @category Lang\n * @param {*} value The value to recursively clone.\n * @returns {*} Returns the deep cloned value.\n * @see _.clone\n * @example\n *\n * var objects = [{ 'a': 1 }, { 'b': 2 }];\n *\n * var deep = _.cloneDeep(objects);\n * console.log(deep[0] === objects[0]);\n * // => false\n */\n function cloneDeep(value) {\n return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);\n }\n\n /**\n * This method is like `_.cloneWith` except that it recursively clones `value`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to recursively clone.\n * @param {Function} [customizer] The function to customize cloning.\n * @returns {*} Returns the deep cloned value.\n * @see _.cloneWith\n * @example\n *\n * function customizer(value) {\n * if (_.isElement(value)) {\n * return value.cloneNode(true);\n * }\n * }\n *\n * var el = _.cloneDeepWith(document.body, customizer);\n *\n * console.log(el === document.body);\n * // => false\n * console.log(el.nodeName);\n * // => 'BODY'\n * console.log(el.childNodes.length);\n * // => 20\n */\n function cloneDeepWith(value, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);\n }\n\n /**\n * Checks if `object` conforms to `source` by invoking the predicate\n * properties of `source` with the corresponding property values of `object`.\n *\n * **Note:** This method is equivalent to `_.conforms` when `source` is\n * partially applied.\n *\n * @static\n * @memberOf _\n * @since 4.14.0\n * @category Lang\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property predicates to conform to.\n * @returns {boolean} Returns `true` if `object` conforms, else `false`.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n *\n * _.conformsTo(object, { 'b': function(n) { return n > 1; } });\n * // => true\n *\n * _.conformsTo(object, { 'b': function(n) { return n > 2; } });\n * // => false\n */\n function conformsTo(object, source) {\n return source == null || baseConformsTo(object, source, keys(source));\n }\n\n /**\n * Performs a\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * comparison between two values to determine if they are equivalent.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * var object = { 'a': 1 };\n * var other = { 'a': 1 };\n *\n * _.eq(object, object);\n * // => true\n *\n * _.eq(object, other);\n * // => false\n *\n * _.eq('a', 'a');\n * // => true\n *\n * _.eq('a', Object('a'));\n * // => false\n *\n * _.eq(NaN, NaN);\n * // => true\n */\n function eq(value, other) {\n return value === other || (value !== value && other !== other);\n }\n\n /**\n * Checks if `value` is greater than `other`.\n *\n * @static\n * @memberOf _\n * @since 3.9.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is greater than `other`,\n * else `false`.\n * @see _.lt\n * @example\n *\n * _.gt(3, 1);\n * // => true\n *\n * _.gt(3, 3);\n * // => false\n *\n * _.gt(1, 3);\n * // => false\n */\n var gt = createRelationalOperation(baseGt);\n\n /**\n * Checks if `value` is greater than or equal to `other`.\n *\n * @static\n * @memberOf _\n * @since 3.9.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is greater than or equal to\n * `other`, else `false`.\n * @see _.lte\n * @example\n *\n * _.gte(3, 1);\n * // => true\n *\n * _.gte(3, 3);\n * // => true\n *\n * _.gte(1, 3);\n * // => false\n */\n var gte = createRelationalOperation(function(value, other) {\n return value >= other;\n });\n\n /**\n * Checks if `value` is likely an `arguments` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n * else `false`.\n * @example\n *\n * _.isArguments(function() { return arguments; }());\n * // => true\n *\n * _.isArguments([1, 2, 3]);\n * // => false\n */\n var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {\n return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&\n !propertyIsEnumerable.call(value, 'callee');\n };\n\n /**\n * Checks if `value` is classified as an `Array` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array, else `false`.\n * @example\n *\n * _.isArray([1, 2, 3]);\n * // => true\n *\n * _.isArray(document.body.children);\n * // => false\n *\n * _.isArray('abc');\n * // => false\n *\n * _.isArray(_.noop);\n * // => false\n */\n var isArray = Array.isArray;\n\n /**\n * Checks if `value` is classified as an `ArrayBuffer` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.\n * @example\n *\n * _.isArrayBuffer(new ArrayBuffer(2));\n * // => true\n *\n * _.isArrayBuffer(new Array(2));\n * // => false\n */\n var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;\n\n /**\n * Checks if `value` is array-like. A value is considered array-like if it's\n * not a function and has a `value.length` that's an integer greater than or\n * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is array-like, else `false`.\n * @example\n *\n * _.isArrayLike([1, 2, 3]);\n * // => true\n *\n * _.isArrayLike(document.body.children);\n * // => true\n *\n * _.isArrayLike('abc');\n * // => true\n *\n * _.isArrayLike(_.noop);\n * // => false\n */\n function isArrayLike(value) {\n return value != null && isLength(value.length) && !isFunction(value);\n }\n\n /**\n * This method is like `_.isArrayLike` except that it also checks if `value`\n * is an object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array-like object,\n * else `false`.\n * @example\n *\n * _.isArrayLikeObject([1, 2, 3]);\n * // => true\n *\n * _.isArrayLikeObject(document.body.children);\n * // => true\n *\n * _.isArrayLikeObject('abc');\n * // => false\n *\n * _.isArrayLikeObject(_.noop);\n * // => false\n */\n function isArrayLikeObject(value) {\n return isObjectLike(value) && isArrayLike(value);\n }\n\n /**\n * Checks if `value` is classified as a boolean primitive or object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a boolean, else `false`.\n * @example\n *\n * _.isBoolean(false);\n * // => true\n *\n * _.isBoolean(null);\n * // => false\n */\n function isBoolean(value) {\n return value === true || value === false ||\n (isObjectLike(value) && baseGetTag(value) == boolTag);\n }\n\n /**\n * Checks if `value` is a buffer.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.\n * @example\n *\n * _.isBuffer(new Buffer(2));\n * // => true\n *\n * _.isBuffer(new Uint8Array(2));\n * // => false\n */\n var isBuffer = nativeIsBuffer || stubFalse;\n\n /**\n * Checks if `value` is classified as a `Date` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a date object, else `false`.\n * @example\n *\n * _.isDate(new Date);\n * // => true\n *\n * _.isDate('Mon April 23 2012');\n * // => false\n */\n var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;\n\n /**\n * Checks if `value` is likely a DOM element.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.\n * @example\n *\n * _.isElement(document.body);\n * // => true\n *\n * _.isElement('');\n * // => false\n */\n function isElement(value) {\n return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);\n }\n\n /**\n * Checks if `value` is an empty object, collection, map, or set.\n *\n * Objects are considered empty if they have no own enumerable string keyed\n * properties.\n *\n * Array-like values such as `arguments` objects, arrays, buffers, strings, or\n * jQuery-like collections are considered empty if they have a `length` of `0`.\n * Similarly, maps and sets are considered empty if they have a `size` of `0`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is empty, else `false`.\n * @example\n *\n * _.isEmpty(null);\n * // => true\n *\n * _.isEmpty(true);\n * // => true\n *\n * _.isEmpty(1);\n * // => true\n *\n * _.isEmpty([1, 2, 3]);\n * // => false\n *\n * _.isEmpty({ 'a': 1 });\n * // => false\n */\n function isEmpty(value) {\n if (value == null) {\n return true;\n }\n if (isArrayLike(value) &&\n (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' ||\n isBuffer(value) || isTypedArray(value) || isArguments(value))) {\n return !value.length;\n }\n var tag = getTag(value);\n if (tag == mapTag || tag == setTag) {\n return !value.size;\n }\n if (isPrototype(value)) {\n return !baseKeys(value).length;\n }\n for (var key in value) {\n if (hasOwnProperty.call(value, key)) {\n return false;\n }\n }\n return true;\n }\n\n /**\n * Performs a deep comparison between two values to determine if they are\n * equivalent.\n *\n * **Note:** This method supports comparing arrays, array buffers, booleans,\n * date objects, error objects, maps, numbers, `Object` objects, regexes,\n * sets, strings, symbols, and typed arrays. `Object` objects are compared\n * by their own, not inherited, enumerable properties. Functions and DOM\n * nodes are compared by strict equality, i.e. `===`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * var object = { 'a': 1 };\n * var other = { 'a': 1 };\n *\n * _.isEqual(object, other);\n * // => true\n *\n * object === other;\n * // => false\n */\n function isEqual(value, other) {\n return baseIsEqual(value, other);\n }\n\n /**\n * This method is like `_.isEqual` except that it accepts `customizer` which\n * is invoked to compare values. If `customizer` returns `undefined`, comparisons\n * are handled by the method instead. The `customizer` is invoked with up to\n * six arguments: (objValue, othValue [, index|key, object, other, stack]).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * function isGreeting(value) {\n * return /^h(?:i|ello)$/.test(value);\n * }\n *\n * function customizer(objValue, othValue) {\n * if (isGreeting(objValue) && isGreeting(othValue)) {\n * return true;\n * }\n * }\n *\n * var array = ['hello', 'goodbye'];\n * var other = ['hi', 'goodbye'];\n *\n * _.isEqualWith(array, other, customizer);\n * // => true\n */\n function isEqualWith(value, other, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n var result = customizer ? customizer(value, other) : undefined;\n return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;\n }\n\n /**\n * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,\n * `SyntaxError`, `TypeError`, or `URIError` object.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an error object, else `false`.\n * @example\n *\n * _.isError(new Error);\n * // => true\n *\n * _.isError(Error);\n * // => false\n */\n function isError(value) {\n if (!isObjectLike(value)) {\n return false;\n }\n var tag = baseGetTag(value);\n return tag == errorTag || tag == domExcTag ||\n (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value));\n }\n\n /**\n * Checks if `value` is a finite primitive number.\n *\n * **Note:** This method is based on\n * [`Number.isFinite`](https://mdn.io/Number/isFinite).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.\n * @example\n *\n * _.isFinite(3);\n * // => true\n *\n * _.isFinite(Number.MIN_VALUE);\n * // => true\n *\n * _.isFinite(Infinity);\n * // => false\n *\n * _.isFinite('3');\n * // => false\n */\n function isFinite(value) {\n return typeof value == 'number' && nativeIsFinite(value);\n }\n\n /**\n * Checks if `value` is classified as a `Function` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a function, else `false`.\n * @example\n *\n * _.isFunction(_);\n * // => true\n *\n * _.isFunction(/abc/);\n * // => false\n */\n function isFunction(value) {\n if (!isObject(value)) {\n return false;\n }\n // The use of `Object#toString` avoids issues with the `typeof` operator\n // in Safari 9 which returns 'object' for typed arrays and other constructors.\n var tag = baseGetTag(value);\n return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;\n }\n\n /**\n * Checks if `value` is an integer.\n *\n * **Note:** This method is based on\n * [`Number.isInteger`](https://mdn.io/Number/isInteger).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an integer, else `false`.\n * @example\n *\n * _.isInteger(3);\n * // => true\n *\n * _.isInteger(Number.MIN_VALUE);\n * // => false\n *\n * _.isInteger(Infinity);\n * // => false\n *\n * _.isInteger('3');\n * // => false\n */\n function isInteger(value) {\n return typeof value == 'number' && value == toInteger(value);\n }\n\n /**\n * Checks if `value` is a valid array-like length.\n *\n * **Note:** This method is loosely based on\n * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.\n * @example\n *\n * _.isLength(3);\n * // => true\n *\n * _.isLength(Number.MIN_VALUE);\n * // => false\n *\n * _.isLength(Infinity);\n * // => false\n *\n * _.isLength('3');\n * // => false\n */\n function isLength(value) {\n return typeof value == 'number' &&\n value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;\n }\n\n /**\n * Checks if `value` is the\n * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\n * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n * @example\n *\n * _.isObject({});\n * // => true\n *\n * _.isObject([1, 2, 3]);\n * // => true\n *\n * _.isObject(_.noop);\n * // => true\n *\n * _.isObject(null);\n * // => false\n */\n function isObject(value) {\n var type = typeof value;\n return value != null && (type == 'object' || type == 'function');\n }\n\n /**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\n function isObjectLike(value) {\n return value != null && typeof value == 'object';\n }\n\n /**\n * Checks if `value` is classified as a `Map` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a map, else `false`.\n * @example\n *\n * _.isMap(new Map);\n * // => true\n *\n * _.isMap(new WeakMap);\n * // => false\n */\n var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;\n\n /**\n * Performs a partial deep comparison between `object` and `source` to\n * determine if `object` contains equivalent property values.\n *\n * **Note:** This method is equivalent to `_.matches` when `source` is\n * partially applied.\n *\n * Partial comparisons will match empty array and empty object `source`\n * values against any array or object value, respectively. See `_.isEqual`\n * for a list of supported value comparisons.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property values to match.\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n *\n * _.isMatch(object, { 'b': 2 });\n * // => true\n *\n * _.isMatch(object, { 'b': 1 });\n * // => false\n */\n function isMatch(object, source) {\n return object === source || baseIsMatch(object, source, getMatchData(source));\n }\n\n /**\n * This method is like `_.isMatch` except that it accepts `customizer` which\n * is invoked to compare values. If `customizer` returns `undefined`, comparisons\n * are handled by the method instead. The `customizer` is invoked with five\n * arguments: (objValue, srcValue, index|key, object, source).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property values to match.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n * @example\n *\n * function isGreeting(value) {\n * return /^h(?:i|ello)$/.test(value);\n * }\n *\n * function customizer(objValue, srcValue) {\n * if (isGreeting(objValue) && isGreeting(srcValue)) {\n * return true;\n * }\n * }\n *\n * var object = { 'greeting': 'hello' };\n * var source = { 'greeting': 'hi' };\n *\n * _.isMatchWith(object, source, customizer);\n * // => true\n */\n function isMatchWith(object, source, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return baseIsMatch(object, source, getMatchData(source), customizer);\n }\n\n /**\n * Checks if `value` is `NaN`.\n *\n * **Note:** This method is based on\n * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as\n * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for\n * `undefined` and other non-number values.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\n * @example\n *\n * _.isNaN(NaN);\n * // => true\n *\n * _.isNaN(new Number(NaN));\n * // => true\n *\n * isNaN(undefined);\n * // => true\n *\n * _.isNaN(undefined);\n * // => false\n */\n function isNaN(value) {\n // An `NaN` primitive is the only value that is not equal to itself.\n // Perform the `toStringTag` check first to avoid errors with some\n // ActiveX objects in IE.\n return isNumber(value) && value != +value;\n }\n\n /**\n * Checks if `value` is a pristine native function.\n *\n * **Note:** This method can't reliably detect native functions in the presence\n * of the core-js package because core-js circumvents this kind of detection.\n * Despite multiple requests, the core-js maintainer has made it clear: any\n * attempt to fix the detection will be obstructed. As a result, we're left\n * with little choice but to throw an error. Unfortunately, this also affects\n * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),\n * which rely on core-js.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a native function,\n * else `false`.\n * @example\n *\n * _.isNative(Array.prototype.push);\n * // => true\n *\n * _.isNative(_);\n * // => false\n */\n function isNative(value) {\n if (isMaskable(value)) {\n throw new Error(CORE_ERROR_TEXT);\n }\n return baseIsNative(value);\n }\n\n /**\n * Checks if `value` is `null`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `null`, else `false`.\n * @example\n *\n * _.isNull(null);\n * // => true\n *\n * _.isNull(void 0);\n * // => false\n */\n function isNull(value) {\n return value === null;\n }\n\n /**\n * Checks if `value` is `null` or `undefined`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is nullish, else `false`.\n * @example\n *\n * _.isNil(null);\n * // => true\n *\n * _.isNil(void 0);\n * // => true\n *\n * _.isNil(NaN);\n * // => false\n */\n function isNil(value) {\n return value == null;\n }\n\n /**\n * Checks if `value` is classified as a `Number` primitive or object.\n *\n * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are\n * classified as numbers, use the `_.isFinite` method.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a number, else `false`.\n * @example\n *\n * _.isNumber(3);\n * // => true\n *\n * _.isNumber(Number.MIN_VALUE);\n * // => true\n *\n * _.isNumber(Infinity);\n * // => true\n *\n * _.isNumber('3');\n * // => false\n */\n function isNumber(value) {\n return typeof value == 'number' ||\n (isObjectLike(value) && baseGetTag(value) == numberTag);\n }\n\n /**\n * Checks if `value` is a plain object, that is, an object created by the\n * `Object` constructor or one with a `[[Prototype]]` of `null`.\n *\n * @static\n * @memberOf _\n * @since 0.8.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * }\n *\n * _.isPlainObject(new Foo);\n * // => false\n *\n * _.isPlainObject([1, 2, 3]);\n * // => false\n *\n * _.isPlainObject({ 'x': 0, 'y': 0 });\n * // => true\n *\n * _.isPlainObject(Object.create(null));\n * // => true\n */\n function isPlainObject(value) {\n if (!isObjectLike(value) || baseGetTag(value) != objectTag) {\n return false;\n }\n var proto = getPrototype(value);\n if (proto === null) {\n return true;\n }\n var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;\n return typeof Ctor == 'function' && Ctor instanceof Ctor &&\n funcToString.call(Ctor) == objectCtorString;\n }\n\n /**\n * Checks if `value` is classified as a `RegExp` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.\n * @example\n *\n * _.isRegExp(/abc/);\n * // => true\n *\n * _.isRegExp('/abc/');\n * // => false\n */\n var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;\n\n /**\n * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754\n * double precision number which isn't the result of a rounded unsafe integer.\n *\n * **Note:** This method is based on\n * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.\n * @example\n *\n * _.isSafeInteger(3);\n * // => true\n *\n * _.isSafeInteger(Number.MIN_VALUE);\n * // => false\n *\n * _.isSafeInteger(Infinity);\n * // => false\n *\n * _.isSafeInteger('3');\n * // => false\n */\n function isSafeInteger(value) {\n return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;\n }\n\n /**\n * Checks if `value` is classified as a `Set` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a set, else `false`.\n * @example\n *\n * _.isSet(new Set);\n * // => true\n *\n * _.isSet(new WeakSet);\n * // => false\n */\n var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;\n\n /**\n * Checks if `value` is classified as a `String` primitive or object.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a string, else `false`.\n * @example\n *\n * _.isString('abc');\n * // => true\n *\n * _.isString(1);\n * // => false\n */\n function isString(value) {\n return typeof value == 'string' ||\n (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag);\n }\n\n /**\n * Checks if `value` is classified as a `Symbol` primitive or object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.\n * @example\n *\n * _.isSymbol(Symbol.iterator);\n * // => true\n *\n * _.isSymbol('abc');\n * // => false\n */\n function isSymbol(value) {\n return typeof value == 'symbol' ||\n (isObjectLike(value) && baseGetTag(value) == symbolTag);\n }\n\n /**\n * Checks if `value` is classified as a typed array.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n * @example\n *\n * _.isTypedArray(new Uint8Array);\n * // => true\n *\n * _.isTypedArray([]);\n * // => false\n */\n var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;\n\n /**\n * Checks if `value` is `undefined`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.\n * @example\n *\n * _.isUndefined(void 0);\n * // => true\n *\n * _.isUndefined(null);\n * // => false\n */\n function isUndefined(value) {\n return value === undefined;\n }\n\n /**\n * Checks if `value` is classified as a `WeakMap` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a weak map, else `false`.\n * @example\n *\n * _.isWeakMap(new WeakMap);\n * // => true\n *\n * _.isWeakMap(new Map);\n * // => false\n */\n function isWeakMap(value) {\n return isObjectLike(value) && getTag(value) == weakMapTag;\n }\n\n /**\n * Checks if `value` is classified as a `WeakSet` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a weak set, else `false`.\n * @example\n *\n * _.isWeakSet(new WeakSet);\n * // => true\n *\n * _.isWeakSet(new Set);\n * // => false\n */\n function isWeakSet(value) {\n return isObjectLike(value) && baseGetTag(value) == weakSetTag;\n }\n\n /**\n * Checks if `value` is less than `other`.\n *\n * @static\n * @memberOf _\n * @since 3.9.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is less than `other`,\n * else `false`.\n * @see _.gt\n * @example\n *\n * _.lt(1, 3);\n * // => true\n *\n * _.lt(3, 3);\n * // => false\n *\n * _.lt(3, 1);\n * // => false\n */\n var lt = createRelationalOperation(baseLt);\n\n /**\n * Checks if `value` is less than or equal to `other`.\n *\n * @static\n * @memberOf _\n * @since 3.9.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is less than or equal to\n * `other`, else `false`.\n * @see _.gte\n * @example\n *\n * _.lte(1, 3);\n * // => true\n *\n * _.lte(3, 3);\n * // => true\n *\n * _.lte(3, 1);\n * // => false\n */\n var lte = createRelationalOperation(function(value, other) {\n return value <= other;\n });\n\n /**\n * Converts `value` to an array.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {Array} Returns the converted array.\n * @example\n *\n * _.toArray({ 'a': 1, 'b': 2 });\n * // => [1, 2]\n *\n * _.toArray('abc');\n * // => ['a', 'b', 'c']\n *\n * _.toArray(1);\n * // => []\n *\n * _.toArray(null);\n * // => []\n */\n function toArray(value) {\n if (!value) {\n return [];\n }\n if (isArrayLike(value)) {\n return isString(value) ? stringToArray(value) : copyArray(value);\n }\n if (symIterator && value[symIterator]) {\n return iteratorToArray(value[symIterator]());\n }\n var tag = getTag(value),\n func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values);\n\n return func(value);\n }\n\n /**\n * Converts `value` to a finite number.\n *\n * @static\n * @memberOf _\n * @since 4.12.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted number.\n * @example\n *\n * _.toFinite(3.2);\n * // => 3.2\n *\n * _.toFinite(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toFinite(Infinity);\n * // => 1.7976931348623157e+308\n *\n * _.toFinite('3.2');\n * // => 3.2\n */\n function toFinite(value) {\n if (!value) {\n return value === 0 ? value : 0;\n }\n value = toNumber(value);\n if (value === INFINITY || value === -INFINITY) {\n var sign = (value < 0 ? -1 : 1);\n return sign * MAX_INTEGER;\n }\n return value === value ? value : 0;\n }\n\n /**\n * Converts `value` to an integer.\n *\n * **Note:** This method is loosely based on\n * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toInteger(3.2);\n * // => 3\n *\n * _.toInteger(Number.MIN_VALUE);\n * // => 0\n *\n * _.toInteger(Infinity);\n * // => 1.7976931348623157e+308\n *\n * _.toInteger('3.2');\n * // => 3\n */\n function toInteger(value) {\n var result = toFinite(value),\n remainder = result % 1;\n\n return result === result ? (remainder ? result - remainder : result) : 0;\n }\n\n /**\n * Converts `value` to an integer suitable for use as the length of an\n * array-like object.\n *\n * **Note:** This method is based on\n * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toLength(3.2);\n * // => 3\n *\n * _.toLength(Number.MIN_VALUE);\n * // => 0\n *\n * _.toLength(Infinity);\n * // => 4294967295\n *\n * _.toLength('3.2');\n * // => 3\n */\n function toLength(value) {\n return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;\n }\n\n /**\n * Converts `value` to a number.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to process.\n * @returns {number} Returns the number.\n * @example\n *\n * _.toNumber(3.2);\n * // => 3.2\n *\n * _.toNumber(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toNumber(Infinity);\n * // => Infinity\n *\n * _.toNumber('3.2');\n * // => 3.2\n */\n function toNumber(value) {\n if (typeof value == 'number') {\n return value;\n }\n if (isSymbol(value)) {\n return NAN;\n }\n if (isObject(value)) {\n var other = typeof value.valueOf == 'function' ? value.valueOf() : value;\n value = isObject(other) ? (other + '') : other;\n }\n if (typeof value != 'string') {\n return value === 0 ? value : +value;\n }\n value = value.replace(reTrim, '');\n var isBinary = reIsBinary.test(value);\n return (isBinary || reIsOctal.test(value))\n ? freeParseInt(value.slice(2), isBinary ? 2 : 8)\n : (reIsBadHex.test(value) ? NAN : +value);\n }\n\n /**\n * Converts `value` to a plain object flattening inherited enumerable string\n * keyed properties of `value` to own properties of the plain object.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {Object} Returns the converted plain object.\n * @example\n *\n * function Foo() {\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.assign({ 'a': 1 }, new Foo);\n * // => { 'a': 1, 'b': 2 }\n *\n * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));\n * // => { 'a': 1, 'b': 2, 'c': 3 }\n */\n function toPlainObject(value) {\n return copyObject(value, keysIn(value));\n }\n\n /**\n * Converts `value` to a safe integer. A safe integer can be compared and\n * represented correctly.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toSafeInteger(3.2);\n * // => 3\n *\n * _.toSafeInteger(Number.MIN_VALUE);\n * // => 0\n *\n * _.toSafeInteger(Infinity);\n * // => 9007199254740991\n *\n * _.toSafeInteger('3.2');\n * // => 3\n */\n function toSafeInteger(value) {\n return value\n ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)\n : (value === 0 ? value : 0);\n }\n\n /**\n * Converts `value` to a string. An empty string is returned for `null`\n * and `undefined` values. The sign of `-0` is preserved.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {string} Returns the converted string.\n * @example\n *\n * _.toString(null);\n * // => ''\n *\n * _.toString(-0);\n * // => '-0'\n *\n * _.toString([1, 2, 3]);\n * // => '1,2,3'\n */\n function toString(value) {\n return value == null ? '' : baseToString(value);\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Assigns own enumerable string keyed properties of source objects to the\n * destination object. Source objects are applied from left to right.\n * Subsequent sources overwrite property assignments of previous sources.\n *\n * **Note:** This method mutates `object` and is loosely based on\n * [`Object.assign`](https://mdn.io/Object/assign).\n *\n * @static\n * @memberOf _\n * @since 0.10.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.assignIn\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * }\n *\n * function Bar() {\n * this.c = 3;\n * }\n *\n * Foo.prototype.b = 2;\n * Bar.prototype.d = 4;\n *\n * _.assign({ 'a': 0 }, new Foo, new Bar);\n * // => { 'a': 1, 'c': 3 }\n */\n var assign = createAssigner(function(object, source) {\n if (isPrototype(source) || isArrayLike(source)) {\n copyObject(source, keys(source), object);\n return;\n }\n for (var key in source) {\n if (hasOwnProperty.call(source, key)) {\n assignValue(object, key, source[key]);\n }\n }\n });\n\n /**\n * This method is like `_.assign` except that it iterates over own and\n * inherited source properties.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias extend\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.assign\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * }\n *\n * function Bar() {\n * this.c = 3;\n * }\n *\n * Foo.prototype.b = 2;\n * Bar.prototype.d = 4;\n *\n * _.assignIn({ 'a': 0 }, new Foo, new Bar);\n * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }\n */\n var assignIn = createAssigner(function(object, source) {\n copyObject(source, keysIn(source), object);\n });\n\n /**\n * This method is like `_.assignIn` except that it accepts `customizer`\n * which is invoked to produce the assigned values. If `customizer` returns\n * `undefined`, assignment is handled by the method instead. The `customizer`\n * is invoked with five arguments: (objValue, srcValue, key, object, source).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias extendWith\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} sources The source objects.\n * @param {Function} [customizer] The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @see _.assignWith\n * @example\n *\n * function customizer(objValue, srcValue) {\n * return _.isUndefined(objValue) ? srcValue : objValue;\n * }\n *\n * var defaults = _.partialRight(_.assignInWith, customizer);\n *\n * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n * // => { 'a': 1, 'b': 2 }\n */\n var assignInWith = createAssigner(function(object, source, srcIndex, customizer) {\n copyObject(source, keysIn(source), object, customizer);\n });\n\n /**\n * This method is like `_.assign` except that it accepts `customizer`\n * which is invoked to produce the assigned values. If `customizer` returns\n * `undefined`, assignment is handled by the method instead. The `customizer`\n * is invoked with five arguments: (objValue, srcValue, key, object, source).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} sources The source objects.\n * @param {Function} [customizer] The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @see _.assignInWith\n * @example\n *\n * function customizer(objValue, srcValue) {\n * return _.isUndefined(objValue) ? srcValue : objValue;\n * }\n *\n * var defaults = _.partialRight(_.assignWith, customizer);\n *\n * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n * // => { 'a': 1, 'b': 2 }\n */\n var assignWith = createAssigner(function(object, source, srcIndex, customizer) {\n copyObject(source, keys(source), object, customizer);\n });\n\n /**\n * Creates an array of values corresponding to `paths` of `object`.\n *\n * @static\n * @memberOf _\n * @since 1.0.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {...(string|string[])} [paths] The property paths to pick.\n * @returns {Array} Returns the picked values.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };\n *\n * _.at(object, ['a[0].b.c', 'a[1]']);\n * // => [3, 4]\n */\n var at = flatRest(baseAt);\n\n /**\n * Creates an object that inherits from the `prototype` object. If a\n * `properties` object is given, its own enumerable string keyed properties\n * are assigned to the created object.\n *\n * @static\n * @memberOf _\n * @since 2.3.0\n * @category Object\n * @param {Object} prototype The object to inherit from.\n * @param {Object} [properties] The properties to assign to the object.\n * @returns {Object} Returns the new object.\n * @example\n *\n * function Shape() {\n * this.x = 0;\n * this.y = 0;\n * }\n *\n * function Circle() {\n * Shape.call(this);\n * }\n *\n * Circle.prototype = _.create(Shape.prototype, {\n * 'constructor': Circle\n * });\n *\n * var circle = new Circle;\n * circle instanceof Circle;\n * // => true\n *\n * circle instanceof Shape;\n * // => true\n */\n function create(prototype, properties) {\n var result = baseCreate(prototype);\n return properties == null ? result : baseAssign(result, properties);\n }\n\n /**\n * Assigns own and inherited enumerable string keyed properties of source\n * objects to the destination object for all destination properties that\n * resolve to `undefined`. Source objects are applied from left to right.\n * Once a property is set, additional values of the same property are ignored.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.defaultsDeep\n * @example\n *\n * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n * // => { 'a': 1, 'b': 2 }\n */\n var defaults = baseRest(function(object, sources) {\n object = Object(object);\n\n var index = -1;\n var length = sources.length;\n var guard = length > 2 ? sources[2] : undefined;\n\n if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n length = 1;\n }\n\n while (++index < length) {\n var source = sources[index];\n var props = keysIn(source);\n var propsIndex = -1;\n var propsLength = props.length;\n\n while (++propsIndex < propsLength) {\n var key = props[propsIndex];\n var value = object[key];\n\n if (value === undefined ||\n (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {\n object[key] = source[key];\n }\n }\n }\n\n return object;\n });\n\n /**\n * This method is like `_.defaults` except that it recursively assigns\n * default properties.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 3.10.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.defaults\n * @example\n *\n * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });\n * // => { 'a': { 'b': 2, 'c': 3 } }\n */\n var defaultsDeep = baseRest(function(args) {\n args.push(undefined, customDefaultsMerge);\n return apply(mergeWith, undefined, args);\n });\n\n /**\n * This method is like `_.find` except that it returns the key of the first\n * element `predicate` returns truthy for instead of the element itself.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category Object\n * @param {Object} object The object to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {string|undefined} Returns the key of the matched element,\n * else `undefined`.\n * @example\n *\n * var users = {\n * 'barney': { 'age': 36, 'active': true },\n * 'fred': { 'age': 40, 'active': false },\n * 'pebbles': { 'age': 1, 'active': true }\n * };\n *\n * _.findKey(users, function(o) { return o.age < 40; });\n * // => 'barney' (iteration order is not guaranteed)\n *\n * // The `_.matches` iteratee shorthand.\n * _.findKey(users, { 'age': 1, 'active': true });\n * // => 'pebbles'\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findKey(users, ['active', false]);\n * // => 'fred'\n *\n * // The `_.property` iteratee shorthand.\n * _.findKey(users, 'active');\n * // => 'barney'\n */\n function findKey(object, predicate) {\n return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);\n }\n\n /**\n * This method is like `_.findKey` except that it iterates over elements of\n * a collection in the opposite order.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Object\n * @param {Object} object The object to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {string|undefined} Returns the key of the matched element,\n * else `undefined`.\n * @example\n *\n * var users = {\n * 'barney': { 'age': 36, 'active': true },\n * 'fred': { 'age': 40, 'active': false },\n * 'pebbles': { 'age': 1, 'active': true }\n * };\n *\n * _.findLastKey(users, function(o) { return o.age < 40; });\n * // => returns 'pebbles' assuming `_.findKey` returns 'barney'\n *\n * // The `_.matches` iteratee shorthand.\n * _.findLastKey(users, { 'age': 36, 'active': true });\n * // => 'barney'\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findLastKey(users, ['active', false]);\n * // => 'fred'\n *\n * // The `_.property` iteratee shorthand.\n * _.findLastKey(users, 'active');\n * // => 'pebbles'\n */\n function findLastKey(object, predicate) {\n return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);\n }\n\n /**\n * Iterates over own and inherited enumerable string keyed properties of an\n * object and invokes `iteratee` for each property. The iteratee is invoked\n * with three arguments: (value, key, object). Iteratee functions may exit\n * iteration early by explicitly returning `false`.\n *\n * @static\n * @memberOf _\n * @since 0.3.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns `object`.\n * @see _.forInRight\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.forIn(new Foo, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).\n */\n function forIn(object, iteratee) {\n return object == null\n ? object\n : baseFor(object, getIteratee(iteratee, 3), keysIn);\n }\n\n /**\n * This method is like `_.forIn` except that it iterates over properties of\n * `object` in the opposite order.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns `object`.\n * @see _.forIn\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.forInRight(new Foo, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.\n */\n function forInRight(object, iteratee) {\n return object == null\n ? object\n : baseForRight(object, getIteratee(iteratee, 3), keysIn);\n }\n\n /**\n * Iterates over own enumerable string keyed properties of an object and\n * invokes `iteratee` for each property. The iteratee is invoked with three\n * arguments: (value, key, object). Iteratee functions may exit iteration\n * early by explicitly returning `false`.\n *\n * @static\n * @memberOf _\n * @since 0.3.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns `object`.\n * @see _.forOwnRight\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.forOwn(new Foo, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'a' then 'b' (iteration order is not guaranteed).\n */\n function forOwn(object, iteratee) {\n return object && baseForOwn(object, getIteratee(iteratee, 3));\n }\n\n /**\n * This method is like `_.forOwn` except that it iterates over properties of\n * `object` in the opposite order.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns `object`.\n * @see _.forOwn\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.forOwnRight(new Foo, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.\n */\n function forOwnRight(object, iteratee) {\n return object && baseForOwnRight(object, getIteratee(iteratee, 3));\n }\n\n /**\n * Creates an array of function property names from own enumerable properties\n * of `object`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to inspect.\n * @returns {Array} Returns the function names.\n * @see _.functionsIn\n * @example\n *\n * function Foo() {\n * this.a = _.constant('a');\n * this.b = _.constant('b');\n * }\n *\n * Foo.prototype.c = _.constant('c');\n *\n * _.functions(new Foo);\n * // => ['a', 'b']\n */\n function functions(object) {\n return object == null ? [] : baseFunctions(object, keys(object));\n }\n\n /**\n * Creates an array of function property names from own and inherited\n * enumerable properties of `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to inspect.\n * @returns {Array} Returns the function names.\n * @see _.functions\n * @example\n *\n * function Foo() {\n * this.a = _.constant('a');\n * this.b = _.constant('b');\n * }\n *\n * Foo.prototype.c = _.constant('c');\n *\n * _.functionsIn(new Foo);\n * // => ['a', 'b', 'c']\n */\n function functionsIn(object) {\n return object == null ? [] : baseFunctions(object, keysIn(object));\n }\n\n /**\n * Gets the value at `path` of `object`. If the resolved value is\n * `undefined`, the `defaultValue` is returned in its place.\n *\n * @static\n * @memberOf _\n * @since 3.7.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to get.\n * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n * @returns {*} Returns the resolved value.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n *\n * _.get(object, 'a[0].b.c');\n * // => 3\n *\n * _.get(object, ['a', '0', 'b', 'c']);\n * // => 3\n *\n * _.get(object, 'a.b.c', 'default');\n * // => 'default'\n */\n function get(object, path, defaultValue) {\n var result = object == null ? undefined : baseGet(object, path);\n return result === undefined ? defaultValue : result;\n }\n\n /**\n * Checks if `path` is a direct property of `object`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n * @example\n *\n * var object = { 'a': { 'b': 2 } };\n * var other = _.create({ 'a': _.create({ 'b': 2 }) });\n *\n * _.has(object, 'a');\n * // => true\n *\n * _.has(object, 'a.b');\n * // => true\n *\n * _.has(object, ['a', 'b']);\n * // => true\n *\n * _.has(other, 'a');\n * // => false\n */\n function has(object, path) {\n return object != null && hasPath(object, path, baseHas);\n }\n\n /**\n * Checks if `path` is a direct or inherited property of `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n * @example\n *\n * var object = _.create({ 'a': _.create({ 'b': 2 }) });\n *\n * _.hasIn(object, 'a');\n * // => true\n *\n * _.hasIn(object, 'a.b');\n * // => true\n *\n * _.hasIn(object, ['a', 'b']);\n * // => true\n *\n * _.hasIn(object, 'b');\n * // => false\n */\n function hasIn(object, path) {\n return object != null && hasPath(object, path, baseHasIn);\n }\n\n /**\n * Creates an object composed of the inverted keys and values of `object`.\n * If `object` contains duplicate values, subsequent values overwrite\n * property assignments of previous values.\n *\n * @static\n * @memberOf _\n * @since 0.7.0\n * @category Object\n * @param {Object} object The object to invert.\n * @returns {Object} Returns the new inverted object.\n * @example\n *\n * var object = { 'a': 1, 'b': 2, 'c': 1 };\n *\n * _.invert(object);\n * // => { '1': 'c', '2': 'b' }\n */\n var invert = createInverter(function(result, value, key) {\n if (value != null &&\n typeof value.toString != 'function') {\n value = nativeObjectToString.call(value);\n }\n\n result[value] = key;\n }, constant(identity));\n\n /**\n * This method is like `_.invert` except that the inverted object is generated\n * from the results of running each element of `object` thru `iteratee`. The\n * corresponding inverted value of each inverted key is an array of keys\n * responsible for generating the inverted value. The iteratee is invoked\n * with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.1.0\n * @category Object\n * @param {Object} object The object to invert.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Object} Returns the new inverted object.\n * @example\n *\n * var object = { 'a': 1, 'b': 2, 'c': 1 };\n *\n * _.invertBy(object);\n * // => { '1': ['a', 'c'], '2': ['b'] }\n *\n * _.invertBy(object, function(value) {\n * return 'group' + value;\n * });\n * // => { 'group1': ['a', 'c'], 'group2': ['b'] }\n */\n var invertBy = createInverter(function(result, value, key) {\n if (value != null &&\n typeof value.toString != 'function') {\n value = nativeObjectToString.call(value);\n }\n\n if (hasOwnProperty.call(result, value)) {\n result[value].push(key);\n } else {\n result[value] = [key];\n }\n }, getIteratee);\n\n /**\n * Invokes the method at `path` of `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the method to invoke.\n * @param {...*} [args] The arguments to invoke the method with.\n * @returns {*} Returns the result of the invoked method.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };\n *\n * _.invoke(object, 'a[0].b.c.slice', 1, 3);\n * // => [2, 3]\n */\n var invoke = baseRest(baseInvoke);\n\n /**\n * Creates an array of the own enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects. See the\n * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n * for more details.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keys(new Foo);\n * // => ['a', 'b'] (iteration order is not guaranteed)\n *\n * _.keys('hi');\n * // => ['0', '1']\n */\n function keys(object) {\n return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);\n }\n\n /**\n * Creates an array of the own and inherited enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keysIn(new Foo);\n * // => ['a', 'b', 'c'] (iteration order is not guaranteed)\n */\n function keysIn(object) {\n return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);\n }\n\n /**\n * The opposite of `_.mapValues`; this method creates an object with the\n * same values as `object` and keys generated by running each own enumerable\n * string keyed property of `object` thru `iteratee`. The iteratee is invoked\n * with three arguments: (value, key, object).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns the new mapped object.\n * @see _.mapValues\n * @example\n *\n * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {\n * return key + value;\n * });\n * // => { 'a1': 1, 'b2': 2 }\n */\n function mapKeys(object, iteratee) {\n var result = {};\n iteratee = getIteratee(iteratee, 3);\n\n baseForOwn(object, function(value, key, object) {\n baseAssignValue(result, iteratee(value, key, object), value);\n });\n return result;\n }\n\n /**\n * Creates an object with the same keys as `object` and values generated\n * by running each own enumerable string keyed property of `object` thru\n * `iteratee`. The iteratee is invoked with three arguments:\n * (value, key, object).\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns the new mapped object.\n * @see _.mapKeys\n * @example\n *\n * var users = {\n * 'fred': { 'user': 'fred', 'age': 40 },\n * 'pebbles': { 'user': 'pebbles', 'age': 1 }\n * };\n *\n * _.mapValues(users, function(o) { return o.age; });\n * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\n *\n * // The `_.property` iteratee shorthand.\n * _.mapValues(users, 'age');\n * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\n */\n function mapValues(object, iteratee) {\n var result = {};\n iteratee = getIteratee(iteratee, 3);\n\n baseForOwn(object, function(value, key, object) {\n baseAssignValue(result, key, iteratee(value, key, object));\n });\n return result;\n }\n\n /**\n * This method is like `_.assign` except that it recursively merges own and\n * inherited enumerable string keyed properties of source objects into the\n * destination object. Source properties that resolve to `undefined` are\n * skipped if a destination value exists. Array and plain object properties\n * are merged recursively. Other objects and value types are overridden by\n * assignment. Source objects are applied from left to right. Subsequent\n * sources overwrite property assignments of previous sources.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 0.5.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = {\n * 'a': [{ 'b': 2 }, { 'd': 4 }]\n * };\n *\n * var other = {\n * 'a': [{ 'c': 3 }, { 'e': 5 }]\n * };\n *\n * _.merge(object, other);\n * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }\n */\n var merge = createAssigner(function(object, source, srcIndex) {\n baseMerge(object, source, srcIndex);\n });\n\n /**\n * This method is like `_.merge` except that it accepts `customizer` which\n * is invoked to produce the merged values of the destination and source\n * properties. If `customizer` returns `undefined`, merging is handled by the\n * method instead. The `customizer` is invoked with six arguments:\n * (objValue, srcValue, key, object, source, stack).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} sources The source objects.\n * @param {Function} customizer The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @example\n *\n * function customizer(objValue, srcValue) {\n * if (_.isArray(objValue)) {\n * return objValue.concat(srcValue);\n * }\n * }\n *\n * var object = { 'a': [1], 'b': [2] };\n * var other = { 'a': [3], 'b': [4] };\n *\n * _.mergeWith(object, other, customizer);\n * // => { 'a': [1, 3], 'b': [2, 4] }\n */\n var mergeWith = createAssigner(function(object, source, srcIndex, customizer) {\n baseMerge(object, source, srcIndex, customizer);\n });\n\n /**\n * The opposite of `_.pick`; this method creates an object composed of the\n * own and inherited enumerable property paths of `object` that are not omitted.\n *\n * **Note:** This method is considerably slower than `_.pick`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The source object.\n * @param {...(string|string[])} [paths] The property paths to omit.\n * @returns {Object} Returns the new object.\n * @example\n *\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\n *\n * _.omit(object, ['a', 'c']);\n * // => { 'b': '2' }\n */\n var omit = flatRest(function(object, paths) {\n var result = {};\n if (object == null) {\n return result;\n }\n var isDeep = false;\n paths = arrayMap(paths, function(path) {\n path = castPath(path, object);\n isDeep || (isDeep = path.length > 1);\n return path;\n });\n copyObject(object, getAllKeysIn(object), result);\n if (isDeep) {\n result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);\n }\n var length = paths.length;\n while (length--) {\n baseUnset(result, paths[length]);\n }\n return result;\n });\n\n /**\n * The opposite of `_.pickBy`; this method creates an object composed of\n * the own and inherited enumerable string keyed properties of `object` that\n * `predicate` doesn't return truthy for. The predicate is invoked with two\n * arguments: (value, key).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The source object.\n * @param {Function} [predicate=_.identity] The function invoked per property.\n * @returns {Object} Returns the new object.\n * @example\n *\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\n *\n * _.omitBy(object, _.isNumber);\n * // => { 'b': '2' }\n */\n function omitBy(object, predicate) {\n return pickBy(object, negate(getIteratee(predicate)));\n }\n\n /**\n * Creates an object composed of the picked `object` properties.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The source object.\n * @param {...(string|string[])} [paths] The property paths to pick.\n * @returns {Object} Returns the new object.\n * @example\n *\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\n *\n * _.pick(object, ['a', 'c']);\n * // => { 'a': 1, 'c': 3 }\n */\n var pick = flatRest(function(object, paths) {\n return object == null ? {} : basePick(object, paths);\n });\n\n /**\n * Creates an object composed of the `object` properties `predicate` returns\n * truthy for. The predicate is invoked with two arguments: (value, key).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The source object.\n * @param {Function} [predicate=_.identity] The function invoked per property.\n * @returns {Object} Returns the new object.\n * @example\n *\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\n *\n * _.pickBy(object, _.isNumber);\n * // => { 'a': 1, 'c': 3 }\n */\n function pickBy(object, predicate) {\n if (object == null) {\n return {};\n }\n var props = arrayMap(getAllKeysIn(object), function(prop) {\n return [prop];\n });\n predicate = getIteratee(predicate);\n return basePickBy(object, props, function(value, path) {\n return predicate(value, path[0]);\n });\n }\n\n /**\n * This method is like `_.get` except that if the resolved value is a\n * function it's invoked with the `this` binding of its parent object and\n * its result is returned.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to resolve.\n * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n * @returns {*} Returns the resolved value.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };\n *\n * _.result(object, 'a[0].b.c1');\n * // => 3\n *\n * _.result(object, 'a[0].b.c2');\n * // => 4\n *\n * _.result(object, 'a[0].b.c3', 'default');\n * // => 'default'\n *\n * _.result(object, 'a[0].b.c3', _.constant('default'));\n * // => 'default'\n */\n function result(object, path, defaultValue) {\n path = castPath(path, object);\n\n var index = -1,\n length = path.length;\n\n // Ensure the loop is entered when path is empty.\n if (!length) {\n length = 1;\n object = undefined;\n }\n while (++index < length) {\n var value = object == null ? undefined : object[toKey(path[index])];\n if (value === undefined) {\n index = length;\n value = defaultValue;\n }\n object = isFunction(value) ? value.call(object) : value;\n }\n return object;\n }\n\n /**\n * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,\n * it's created. Arrays are created for missing index properties while objects\n * are created for all other missing properties. Use `_.setWith` to customize\n * `path` creation.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 3.7.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n *\n * _.set(object, 'a[0].b.c', 4);\n * console.log(object.a[0].b.c);\n * // => 4\n *\n * _.set(object, ['x', '0', 'y', 'z'], 5);\n * console.log(object.x[0].y.z);\n * // => 5\n */\n function set(object, path, value) {\n return object == null ? object : baseSet(object, path, value);\n }\n\n /**\n * This method is like `_.set` except that it accepts `customizer` which is\n * invoked to produce the objects of `path`. If `customizer` returns `undefined`\n * path creation is handled by the method instead. The `customizer` is invoked\n * with three arguments: (nsValue, key, nsObject).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {*} value The value to set.\n * @param {Function} [customizer] The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = {};\n *\n * _.setWith(object, '[0][1]', 'a', Object);\n * // => { '0': { '1': 'a' } }\n */\n function setWith(object, path, value, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return object == null ? object : baseSet(object, path, value, customizer);\n }\n\n /**\n * Creates an array of own enumerable string keyed-value pairs for `object`\n * which can be consumed by `_.fromPairs`. If `object` is a map or set, its\n * entries are returned.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias entries\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the key-value pairs.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.toPairs(new Foo);\n * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)\n */\n var toPairs = createToPairs(keys);\n\n /**\n * Creates an array of own and inherited enumerable string keyed-value pairs\n * for `object` which can be consumed by `_.fromPairs`. If `object` is a map\n * or set, its entries are returned.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias entriesIn\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the key-value pairs.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.toPairsIn(new Foo);\n * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)\n */\n var toPairsIn = createToPairs(keysIn);\n\n /**\n * An alternative to `_.reduce`; this method transforms `object` to a new\n * `accumulator` object which is the result of running each of its own\n * enumerable string keyed properties thru `iteratee`, with each invocation\n * potentially mutating the `accumulator` object. If `accumulator` is not\n * provided, a new object with the same `[[Prototype]]` will be used. The\n * iteratee is invoked with four arguments: (accumulator, value, key, object).\n * Iteratee functions may exit iteration early by explicitly returning `false`.\n *\n * @static\n * @memberOf _\n * @since 1.3.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {*} [accumulator] The custom accumulator value.\n * @returns {*} Returns the accumulated value.\n * @example\n *\n * _.transform([2, 3, 4], function(result, n) {\n * result.push(n *= n);\n * return n % 2 == 0;\n * }, []);\n * // => [4, 9]\n *\n * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\n * (result[value] || (result[value] = [])).push(key);\n * }, {});\n * // => { '1': ['a', 'c'], '2': ['b'] }\n */\n function transform(object, iteratee, accumulator) {\n var isArr = isArray(object),\n isArrLike = isArr || isBuffer(object) || isTypedArray(object);\n\n iteratee = getIteratee(iteratee, 4);\n if (accumulator == null) {\n var Ctor = object && object.constructor;\n if (isArrLike) {\n accumulator = isArr ? new Ctor : [];\n }\n else if (isObject(object)) {\n accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};\n }\n else {\n accumulator = {};\n }\n }\n (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) {\n return iteratee(accumulator, value, index, object);\n });\n return accumulator;\n }\n\n /**\n * Removes the property at `path` of `object`.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to unset.\n * @returns {boolean} Returns `true` if the property is deleted, else `false`.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 7 } }] };\n * _.unset(object, 'a[0].b.c');\n * // => true\n *\n * console.log(object);\n * // => { 'a': [{ 'b': {} }] };\n *\n * _.unset(object, ['a', '0', 'b', 'c']);\n * // => true\n *\n * console.log(object);\n * // => { 'a': [{ 'b': {} }] };\n */\n function unset(object, path) {\n return object == null ? true : baseUnset(object, path);\n }\n\n /**\n * This method is like `_.set` except that accepts `updater` to produce the\n * value to set. Use `_.updateWith` to customize `path` creation. The `updater`\n * is invoked with one argument: (value).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.6.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {Function} updater The function to produce the updated value.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n *\n * _.update(object, 'a[0].b.c', function(n) { return n * n; });\n * console.log(object.a[0].b.c);\n * // => 9\n *\n * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });\n * console.log(object.x[0].y.z);\n * // => 0\n */\n function update(object, path, updater) {\n return object == null ? object : baseUpdate(object, path, castFunction(updater));\n }\n\n /**\n * This method is like `_.update` except that it accepts `customizer` which is\n * invoked to produce the objects of `path`. If `customizer` returns `undefined`\n * path creation is handled by the method instead. The `customizer` is invoked\n * with three arguments: (nsValue, key, nsObject).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.6.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {Function} updater The function to produce the updated value.\n * @param {Function} [customizer] The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = {};\n *\n * _.updateWith(object, '[0][1]', _.constant('a'), Object);\n * // => { '0': { '1': 'a' } }\n */\n function updateWith(object, path, updater, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);\n }\n\n /**\n * Creates an array of the own enumerable string keyed property values of `object`.\n *\n * **Note:** Non-object values are coerced to objects.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property values.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.values(new Foo);\n * // => [1, 2] (iteration order is not guaranteed)\n *\n * _.values('hi');\n * // => ['h', 'i']\n */\n function values(object) {\n return object == null ? [] : baseValues(object, keys(object));\n }\n\n /**\n * Creates an array of the own and inherited enumerable string keyed property\n * values of `object`.\n *\n * **Note:** Non-object values are coerced to objects.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property values.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.valuesIn(new Foo);\n * // => [1, 2, 3] (iteration order is not guaranteed)\n */\n function valuesIn(object) {\n return object == null ? [] : baseValues(object, keysIn(object));\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Clamps `number` within the inclusive `lower` and `upper` bounds.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Number\n * @param {number} number The number to clamp.\n * @param {number} [lower] The lower bound.\n * @param {number} upper The upper bound.\n * @returns {number} Returns the clamped number.\n * @example\n *\n * _.clamp(-10, -5, 5);\n * // => -5\n *\n * _.clamp(10, -5, 5);\n * // => 5\n */\n function clamp(number, lower, upper) {\n if (upper === undefined) {\n upper = lower;\n lower = undefined;\n }\n if (upper !== undefined) {\n upper = toNumber(upper);\n upper = upper === upper ? upper : 0;\n }\n if (lower !== undefined) {\n lower = toNumber(lower);\n lower = lower === lower ? lower : 0;\n }\n return baseClamp(toNumber(number), lower, upper);\n }\n\n /**\n * Checks if `n` is between `start` and up to, but not including, `end`. If\n * `end` is not specified, it's set to `start` with `start` then set to `0`.\n * If `start` is greater than `end` the params are swapped to support\n * negative ranges.\n *\n * @static\n * @memberOf _\n * @since 3.3.0\n * @category Number\n * @param {number} number The number to check.\n * @param {number} [start=0] The start of the range.\n * @param {number} end The end of the range.\n * @returns {boolean} Returns `true` if `number` is in the range, else `false`.\n * @see _.range, _.rangeRight\n * @example\n *\n * _.inRange(3, 2, 4);\n * // => true\n *\n * _.inRange(4, 8);\n * // => true\n *\n * _.inRange(4, 2);\n * // => false\n *\n * _.inRange(2, 2);\n * // => false\n *\n * _.inRange(1.2, 2);\n * // => true\n *\n * _.inRange(5.2, 4);\n * // => false\n *\n * _.inRange(-3, -2, -6);\n * // => true\n */\n function inRange(number, start, end) {\n start = toFinite(start);\n if (end === undefined) {\n end = start;\n start = 0;\n } else {\n end = toFinite(end);\n }\n number = toNumber(number);\n return baseInRange(number, start, end);\n }\n\n /**\n * Produces a random number between the inclusive `lower` and `upper` bounds.\n * If only one argument is provided a number between `0` and the given number\n * is returned. If `floating` is `true`, or either `lower` or `upper` are\n * floats, a floating-point number is returned instead of an integer.\n *\n * **Note:** JavaScript follows the IEEE-754 standard for resolving\n * floating-point values which can produce unexpected results.\n *\n * @static\n * @memberOf _\n * @since 0.7.0\n * @category Number\n * @param {number} [lower=0] The lower bound.\n * @param {number} [upper=1] The upper bound.\n * @param {boolean} [floating] Specify returning a floating-point number.\n * @returns {number} Returns the random number.\n * @example\n *\n * _.random(0, 5);\n * // => an integer between 0 and 5\n *\n * _.random(5);\n * // => also an integer between 0 and 5\n *\n * _.random(5, true);\n * // => a floating-point number between 0 and 5\n *\n * _.random(1.2, 5.2);\n * // => a floating-point number between 1.2 and 5.2\n */\n function random(lower, upper, floating) {\n if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {\n upper = floating = undefined;\n }\n if (floating === undefined) {\n if (typeof upper == 'boolean') {\n floating = upper;\n upper = undefined;\n }\n else if (typeof lower == 'boolean') {\n floating = lower;\n lower = undefined;\n }\n }\n if (lower === undefined && upper === undefined) {\n lower = 0;\n upper = 1;\n }\n else {\n lower = toFinite(lower);\n if (upper === undefined) {\n upper = lower;\n lower = 0;\n } else {\n upper = toFinite(upper);\n }\n }\n if (lower > upper) {\n var temp = lower;\n lower = upper;\n upper = temp;\n }\n if (floating || lower % 1 || upper % 1) {\n var rand = nativeRandom();\n return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper);\n }\n return baseRandom(lower, upper);\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the camel cased string.\n * @example\n *\n * _.camelCase('Foo Bar');\n * // => 'fooBar'\n *\n * _.camelCase('--foo-bar--');\n * // => 'fooBar'\n *\n * _.camelCase('__FOO_BAR__');\n * // => 'fooBar'\n */\n var camelCase = createCompounder(function(result, word, index) {\n word = word.toLowerCase();\n return result + (index ? capitalize(word) : word);\n });\n\n /**\n * Converts the first character of `string` to upper case and the remaining\n * to lower case.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to capitalize.\n * @returns {string} Returns the capitalized string.\n * @example\n *\n * _.capitalize('FRED');\n * // => 'Fred'\n */\n function capitalize(string) {\n return upperFirst(toString(string).toLowerCase());\n }\n\n /**\n * Deburrs `string` by converting\n * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)\n * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)\n * letters to basic Latin letters and removing\n * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to deburr.\n * @returns {string} Returns the deburred string.\n * @example\n *\n * _.deburr('déjà vu');\n * // => 'deja vu'\n */\n function deburr(string) {\n string = toString(string);\n return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');\n }\n\n /**\n * Checks if `string` ends with the given target string.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to inspect.\n * @param {string} [target] The string to search for.\n * @param {number} [position=string.length] The position to search up to.\n * @returns {boolean} Returns `true` if `string` ends with `target`,\n * else `false`.\n * @example\n *\n * _.endsWith('abc', 'c');\n * // => true\n *\n * _.endsWith('abc', 'b');\n * // => false\n *\n * _.endsWith('abc', 'b', 2);\n * // => true\n */\n function endsWith(string, target, position) {\n string = toString(string);\n target = baseToString(target);\n\n var length = string.length;\n position = position === undefined\n ? length\n : baseClamp(toInteger(position), 0, length);\n\n var end = position;\n position -= target.length;\n return position >= 0 && string.slice(position, end) == target;\n }\n\n /**\n * Converts the characters \"&\", \"<\", \">\", '\"', and \"'\" in `string` to their\n * corresponding HTML entities.\n *\n * **Note:** No other characters are escaped. To escape additional\n * characters use a third-party library like [_he_](https://mths.be/he).\n *\n * Though the \">\" character is escaped for symmetry, characters like\n * \">\" and \"/\" don't need escaping in HTML and have no special meaning\n * unless they're part of a tag or unquoted attribute value. See\n * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)\n * (under \"semi-related fun fact\") for more details.\n *\n * When working with HTML you should always\n * [quote attribute values](http://wonko.com/post/html-escaping) to reduce\n * XSS vectors.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category String\n * @param {string} [string=''] The string to escape.\n * @returns {string} Returns the escaped string.\n * @example\n *\n * _.escape('fred, barney, & pebbles');\n * // => 'fred, barney, & pebbles'\n */\n function escape(string) {\n string = toString(string);\n return (string && reHasUnescapedHtml.test(string))\n ? string.replace(reUnescapedHtml, escapeHtmlChar)\n : string;\n }\n\n /**\n * Escapes the `RegExp` special characters \"^\", \"$\", \"\\\", \".\", \"*\", \"+\",\n * \"?\", \"(\", \")\", \"[\", \"]\", \"{\", \"}\", and \"|\" in `string`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to escape.\n * @returns {string} Returns the escaped string.\n * @example\n *\n * _.escapeRegExp('[lodash](https://lodash.com/)');\n * // => '\\[lodash\\]\\(https://lodash\\.com/\\)'\n */\n function escapeRegExp(string) {\n string = toString(string);\n return (string && reHasRegExpChar.test(string))\n ? string.replace(reRegExpChar, '\\\\$&')\n : string;\n }\n\n /**\n * Converts `string` to\n * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the kebab cased string.\n * @example\n *\n * _.kebabCase('Foo Bar');\n * // => 'foo-bar'\n *\n * _.kebabCase('fooBar');\n * // => 'foo-bar'\n *\n * _.kebabCase('__FOO_BAR__');\n * // => 'foo-bar'\n */\n var kebabCase = createCompounder(function(result, word, index) {\n return result + (index ? '-' : '') + word.toLowerCase();\n });\n\n /**\n * Converts `string`, as space separated words, to lower case.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the lower cased string.\n * @example\n *\n * _.lowerCase('--Foo-Bar--');\n * // => 'foo bar'\n *\n * _.lowerCase('fooBar');\n * // => 'foo bar'\n *\n * _.lowerCase('__FOO_BAR__');\n * // => 'foo bar'\n */\n var lowerCase = createCompounder(function(result, word, index) {\n return result + (index ? ' ' : '') + word.toLowerCase();\n });\n\n /**\n * Converts the first character of `string` to lower case.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the converted string.\n * @example\n *\n * _.lowerFirst('Fred');\n * // => 'fred'\n *\n * _.lowerFirst('FRED');\n * // => 'fRED'\n */\n var lowerFirst = createCaseFirst('toLowerCase');\n\n /**\n * Pads `string` on the left and right sides if it's shorter than `length`.\n * Padding characters are truncated if they can't be evenly divided by `length`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to pad.\n * @param {number} [length=0] The padding length.\n * @param {string} [chars=' '] The string used as padding.\n * @returns {string} Returns the padded string.\n * @example\n *\n * _.pad('abc', 8);\n * // => ' abc '\n *\n * _.pad('abc', 8, '_-');\n * // => '_-abc_-_'\n *\n * _.pad('abc', 3);\n * // => 'abc'\n */\n function pad(string, length, chars) {\n string = toString(string);\n length = toInteger(length);\n\n var strLength = length ? stringSize(string) : 0;\n if (!length || strLength >= length) {\n return string;\n }\n var mid = (length - strLength) / 2;\n return (\n createPadding(nativeFloor(mid), chars) +\n string +\n createPadding(nativeCeil(mid), chars)\n );\n }\n\n /**\n * Pads `string` on the right side if it's shorter than `length`. Padding\n * characters are truncated if they exceed `length`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to pad.\n * @param {number} [length=0] The padding length.\n * @param {string} [chars=' '] The string used as padding.\n * @returns {string} Returns the padded string.\n * @example\n *\n * _.padEnd('abc', 6);\n * // => 'abc '\n *\n * _.padEnd('abc', 6, '_-');\n * // => 'abc_-_'\n *\n * _.padEnd('abc', 3);\n * // => 'abc'\n */\n function padEnd(string, length, chars) {\n string = toString(string);\n length = toInteger(length);\n\n var strLength = length ? stringSize(string) : 0;\n return (length && strLength < length)\n ? (string + createPadding(length - strLength, chars))\n : string;\n }\n\n /**\n * Pads `string` on the left side if it's shorter than `length`. Padding\n * characters are truncated if they exceed `length`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to pad.\n * @param {number} [length=0] The padding length.\n * @param {string} [chars=' '] The string used as padding.\n * @returns {string} Returns the padded string.\n * @example\n *\n * _.padStart('abc', 6);\n * // => ' abc'\n *\n * _.padStart('abc', 6, '_-');\n * // => '_-_abc'\n *\n * _.padStart('abc', 3);\n * // => 'abc'\n */\n function padStart(string, length, chars) {\n string = toString(string);\n length = toInteger(length);\n\n var strLength = length ? stringSize(string) : 0;\n return (length && strLength < length)\n ? (createPadding(length - strLength, chars) + string)\n : string;\n }\n\n /**\n * Converts `string` to an integer of the specified radix. If `radix` is\n * `undefined` or `0`, a `radix` of `10` is used unless `value` is a\n * hexadecimal, in which case a `radix` of `16` is used.\n *\n * **Note:** This method aligns with the\n * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category String\n * @param {string} string The string to convert.\n * @param {number} [radix=10] The radix to interpret `value` by.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.parseInt('08');\n * // => 8\n *\n * _.map(['6', '08', '10'], _.parseInt);\n * // => [6, 8, 10]\n */\n function parseInt(string, radix, guard) {\n if (guard || radix == null) {\n radix = 0;\n } else if (radix) {\n radix = +radix;\n }\n return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);\n }\n\n /**\n * Repeats the given string `n` times.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to repeat.\n * @param {number} [n=1] The number of times to repeat the string.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {string} Returns the repeated string.\n * @example\n *\n * _.repeat('*', 3);\n * // => '***'\n *\n * _.repeat('abc', 2);\n * // => 'abcabc'\n *\n * _.repeat('abc', 0);\n * // => ''\n */\n function repeat(string, n, guard) {\n if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) {\n n = 1;\n } else {\n n = toInteger(n);\n }\n return baseRepeat(toString(string), n);\n }\n\n /**\n * Replaces matches for `pattern` in `string` with `replacement`.\n *\n * **Note:** This method is based on\n * [`String#replace`](https://mdn.io/String/replace).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to modify.\n * @param {RegExp|string} pattern The pattern to replace.\n * @param {Function|string} replacement The match replacement.\n * @returns {string} Returns the modified string.\n * @example\n *\n * _.replace('Hi Fred', 'Fred', 'Barney');\n * // => 'Hi Barney'\n */\n function replace() {\n var args = arguments,\n string = toString(args[0]);\n\n return args.length < 3 ? string : string.replace(args[1], args[2]);\n }\n\n /**\n * Converts `string` to\n * [snake case](https://en.wikipedia.org/wiki/Snake_case).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the snake cased string.\n * @example\n *\n * _.snakeCase('Foo Bar');\n * // => 'foo_bar'\n *\n * _.snakeCase('fooBar');\n * // => 'foo_bar'\n *\n * _.snakeCase('--FOO-BAR--');\n * // => 'foo_bar'\n */\n var snakeCase = createCompounder(function(result, word, index) {\n return result + (index ? '_' : '') + word.toLowerCase();\n });\n\n /**\n * Splits `string` by `separator`.\n *\n * **Note:** This method is based on\n * [`String#split`](https://mdn.io/String/split).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to split.\n * @param {RegExp|string} separator The separator pattern to split by.\n * @param {number} [limit] The length to truncate results to.\n * @returns {Array} Returns the string segments.\n * @example\n *\n * _.split('a-b-c', '-', 2);\n * // => ['a', 'b']\n */\n function split(string, separator, limit) {\n if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {\n separator = limit = undefined;\n }\n limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;\n if (!limit) {\n return [];\n }\n string = toString(string);\n if (string && (\n typeof separator == 'string' ||\n (separator != null && !isRegExp(separator))\n )) {\n separator = baseToString(separator);\n if (!separator && hasUnicode(string)) {\n return castSlice(stringToArray(string), 0, limit);\n }\n }\n return string.split(separator, limit);\n }\n\n /**\n * Converts `string` to\n * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).\n *\n * @static\n * @memberOf _\n * @since 3.1.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the start cased string.\n * @example\n *\n * _.startCase('--foo-bar--');\n * // => 'Foo Bar'\n *\n * _.startCase('fooBar');\n * // => 'Foo Bar'\n *\n * _.startCase('__FOO_BAR__');\n * // => 'FOO BAR'\n */\n var startCase = createCompounder(function(result, word, index) {\n return result + (index ? ' ' : '') + upperFirst(word);\n });\n\n /**\n * Checks if `string` starts with the given target string.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to inspect.\n * @param {string} [target] The string to search for.\n * @param {number} [position=0] The position to search from.\n * @returns {boolean} Returns `true` if `string` starts with `target`,\n * else `false`.\n * @example\n *\n * _.startsWith('abc', 'a');\n * // => true\n *\n * _.startsWith('abc', 'b');\n * // => false\n *\n * _.startsWith('abc', 'b', 1);\n * // => true\n */\n function startsWith(string, target, position) {\n string = toString(string);\n position = position == null\n ? 0\n : baseClamp(toInteger(position), 0, string.length);\n\n target = baseToString(target);\n return string.slice(position, position + target.length) == target;\n }\n\n /**\n * Creates a compiled template function that can interpolate data properties\n * in \"interpolate\" delimiters, HTML-escape interpolated data properties in\n * \"escape\" delimiters, and execute JavaScript in \"evaluate\" delimiters. Data\n * properties may be accessed as free variables in the template. If a setting\n * object is given, it takes precedence over `_.templateSettings` values.\n *\n * **Note:** In the development build `_.template` utilizes\n * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)\n * for easier debugging.\n *\n * For more information on precompiling templates see\n * [lodash's custom builds documentation](https://lodash.com/custom-builds).\n *\n * For more information on Chrome extension sandboxes see\n * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category String\n * @param {string} [string=''] The template string.\n * @param {Object} [options={}] The options object.\n * @param {RegExp} [options.escape=_.templateSettings.escape]\n * The HTML \"escape\" delimiter.\n * @param {RegExp} [options.evaluate=_.templateSettings.evaluate]\n * The \"evaluate\" delimiter.\n * @param {Object} [options.imports=_.templateSettings.imports]\n * An object to import into the template as free variables.\n * @param {RegExp} [options.interpolate=_.templateSettings.interpolate]\n * The \"interpolate\" delimiter.\n * @param {string} [options.sourceURL='lodash.templateSources[n]']\n * The sourceURL of the compiled template.\n * @param {string} [options.variable='obj']\n * The data object variable name.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Function} Returns the compiled template function.\n * @example\n *\n * // Use the \"interpolate\" delimiter to create a compiled template.\n * var compiled = _.template('hello <%= user %>!');\n * compiled({ 'user': 'fred' });\n * // => 'hello fred!'\n *\n * // Use the HTML \"escape\" delimiter to escape data property values.\n * var compiled = _.template('<%- value %>');\n * compiled({ 'value': '\n// \n//\n// Here's how it works.\n//\n// ```\n// // Get a reference to the logo element.\n// var el = document.getElementById('logo');\n//\n// // create a SpringSystem and a Spring with a bouncy config.\n// var springSystem = new rebound.SpringSystem();\n// var spring = springSystem.createSpring(50, 3);\n//\n// // Add a listener to the spring. Every time the physics\n// // solver updates the Spring's value onSpringUpdate will\n// // be called.\n// spring.addListener({\n// onSpringUpdate: function(spring) {\n// var val = spring.getCurrentValue();\n// val = rebound.MathUtil\n// .mapValueInRange(val, 0, 1, 1, 0.5);\n// scale(el, val);\n// }\n// });\n//\n// // Listen for mouse down/up/out and toggle the\n// //springs endValue from 0 to 1.\n// el.addEventListener('mousedown', function() {\n// spring.setEndValue(1);\n// });\n//\n// el.addEventListener('mouseout', function() {\n// spring.setEndValue(0);\n// });\n//\n// el.addEventListener('mouseup', function() {\n// spring.setEndValue(0);\n// });\n//\n// // Helper for scaling an element with css transforms.\n// function scale(el, val) {\n// el.style.mozTransform =\n// el.style.msTransform =\n// el.style.webkitTransform =\n// el.style.transform = 'scale3d(' +\n// val + ', ' + val + ', 1)';\n// }\n// ```\n\n(function() {\n var rebound = {};\n var util = rebound.util = {};\n var concat = Array.prototype.concat;\n var slice = Array.prototype.slice;\n\n // Bind a function to a context object.\n util.bind = function bind(func, context) {\n var args = slice.call(arguments, 2);\n return function() {\n func.apply(context, concat.call(args, slice.call(arguments)));\n };\n };\n\n // Add all the properties in the source to the target.\n util.extend = function extend(target, source) {\n for (var key in source) {\n if (source.hasOwnProperty(key)) {\n target[key] = source[key];\n }\n }\n };\n\n // SpringSystem\n // ------------\n // **SpringSystem** is a set of Springs that all run on the same physics\n // timing loop. To get started with a Rebound animation you first\n // create a new SpringSystem and then add springs to it.\n var SpringSystem = rebound.SpringSystem = function SpringSystem(looper) {\n this._springRegistry = {};\n this._activeSprings = [];\n this.listeners = [];\n this._idleSpringIndices = [];\n this.looper = looper || new AnimationLooper();\n this.looper.springSystem = this;\n };\n\n util.extend(SpringSystem.prototype, {\n\n _springRegistry: null,\n\n _isIdle: true,\n\n _lastTimeMillis: -1,\n\n _activeSprings: null,\n\n listeners: null,\n\n _idleSpringIndices: null,\n\n // A SpringSystem is iterated by a looper. The looper is responsible\n // for executing each frame as the SpringSystem is resolved to idle.\n // There are three types of Loopers described below AnimationLooper,\n // SimulationLooper, and SteppingSimulationLooper. AnimationLooper is\n // the default as it is the most useful for common UI animations.\n setLooper: function(looper) {\n this.looper = looper;\n looper.springSystem = this;\n },\n\n // Add a new spring to this SpringSystem. This Spring will now be solved for\n // during the physics iteration loop. By default the spring will use the\n // default Origami spring config with 40 tension and 7 friction, but you can\n // also provide your own values here.\n createSpring: function(tension, friction) {\n var springConfig;\n if (tension === undefined || friction === undefined) {\n springConfig = SpringConfig.DEFAULT_ORIGAMI_SPRING_CONFIG;\n } else {\n springConfig =\n SpringConfig.fromOrigamiTensionAndFriction(tension, friction);\n }\n return this.createSpringWithConfig(springConfig);\n },\n\n // Add a spring with a specified bounciness and speed. To replicate Origami\n // compositions based on PopAnimation patches, use this factory method to\n // create matching springs.\n createSpringWithBouncinessAndSpeed: function(bounciness, speed) {\n var springConfig;\n if (bounciness === undefined || speed === undefined) {\n springConfig = SpringConfig.DEFAULT_ORIGAMI_SPRING_CONFIG;\n } else {\n springConfig =\n SpringConfig.fromBouncinessAndSpeed(bounciness, speed);\n }\n return this.createSpringWithConfig(springConfig);\n },\n\n // Add a spring with the provided SpringConfig.\n createSpringWithConfig: function(springConfig) {\n var spring = new Spring(this);\n this.registerSpring(spring);\n spring.setSpringConfig(springConfig);\n return spring;\n },\n\n // You can check if a SpringSystem is idle or active by calling\n // getIsIdle. If all of the Springs in the SpringSystem are at rest,\n // i.e. the physics forces have reached equilibrium, then this\n // method will return true.\n getIsIdle: function() {\n return this._isIdle;\n },\n\n // Retrieve a specific Spring from the SpringSystem by id. This\n // can be useful for inspecting the state of a spring before\n // or after an integration loop in the SpringSystem executes.\n getSpringById: function (id) {\n return this._springRegistry[id];\n },\n\n // Get a listing of all the springs registered with this\n // SpringSystem.\n getAllSprings: function() {\n var vals = [];\n for (var id in this._springRegistry) {\n if (this._springRegistry.hasOwnProperty(id)) {\n vals.push(this._springRegistry[id]);\n }\n }\n return vals;\n },\n\n // registerSpring is called automatically as soon as you create\n // a Spring with SpringSystem#createSpring. This method sets the\n // spring up in the registry so that it can be solved in the\n // solver loop.\n registerSpring: function(spring) {\n this._springRegistry[spring.getId()] = spring;\n },\n\n // Deregister a spring with this SpringSystem. The SpringSystem will\n // no longer consider this Spring during its integration loop once\n // this is called. This is normally done automatically for you when\n // you call Spring#destroy.\n deregisterSpring: function(spring) {\n removeFirst(this._activeSprings, spring);\n delete this._springRegistry[spring.getId()];\n },\n\n advance: function(time, deltaTime) {\n while(this._idleSpringIndices.length > 0) this._idleSpringIndices.pop();\n for (var i = 0, len = this._activeSprings.length; i < len; i++) {\n var spring = this._activeSprings[i];\n if (spring.systemShouldAdvance()) {\n spring.advance(time / 1000.0, deltaTime / 1000.0);\n } else {\n this._idleSpringIndices.push(this._activeSprings.indexOf(spring));\n }\n }\n while(this._idleSpringIndices.length > 0) {\n var idx = this._idleSpringIndices.pop();\n idx >= 0 && this._activeSprings.splice(idx, 1);\n }\n },\n\n // This is our main solver loop called to move the simulation\n // forward through time. Before each pass in the solver loop\n // onBeforeIntegrate is called on an any listeners that have\n // registered themeselves with the SpringSystem. This gives you\n // an opportunity to apply any constraints or adjustments to\n // the springs that should be enforced before each iteration\n // loop. Next the advance method is called to move each Spring in\n // the systemShouldAdvance forward to the current time. After the\n // integration step runs in advance, onAfterIntegrate is called\n // on any listeners that have registered themselves with the\n // SpringSystem. This gives you an opportunity to run any post\n // integration constraints or adjustments on the Springs in the\n // SpringSystem.\n loop: function(currentTimeMillis) {\n var listener;\n if (this._lastTimeMillis === -1) {\n this._lastTimeMillis = currentTimeMillis -1;\n }\n var ellapsedMillis = currentTimeMillis - this._lastTimeMillis;\n this._lastTimeMillis = currentTimeMillis;\n\n var i = 0, len = this.listeners.length;\n for (i = 0; i < len; i++) {\n listener = this.listeners[i];\n listener.onBeforeIntegrate && listener.onBeforeIntegrate(this);\n }\n\n this.advance(currentTimeMillis, ellapsedMillis);\n if (this._activeSprings.length === 0) {\n this._isIdle = true;\n this._lastTimeMillis = -1;\n }\n\n for (i = 0; i < len; i++) {\n listener = this.listeners[i];\n listener.onAfterIntegrate && listener.onAfterIntegrate(this);\n }\n\n if (!this._isIdle) {\n this.looper.run();\n }\n },\n\n // activateSpring is used to notify the SpringSystem that a Spring\n // has become displaced. The system responds by starting its solver\n // loop up if it is currently idle.\n activateSpring: function(springId) {\n var spring = this._springRegistry[springId];\n if (this._activeSprings.indexOf(spring) == -1) {\n this._activeSprings.push(spring);\n }\n if (this.getIsIdle()) {\n this._isIdle = false;\n this.looper.run();\n }\n },\n\n // Add a listener to the SpringSystem so that you can receive\n // before/after integration notifications allowing Springs to be\n // constrained or adjusted.\n addListener: function(listener) {\n this.listeners.push(listener);\n },\n\n // Remove a previously added listener on the SpringSystem.\n removeListener: function(listener) {\n removeFirst(this.listeners, listener);\n },\n\n // Remove all previously added listeners on the SpringSystem.\n removeAllListeners: function() {\n this.listeners = [];\n }\n\n });\n\n // Spring\n // ------\n // **Spring** provides a model of a classical spring acting to\n // resolve a body to equilibrium. Springs have configurable\n // tension which is a force multipler on the displacement of the\n // spring from its rest point or `endValue` as defined by [Hooke's\n // law](http://en.wikipedia.org/wiki/Hooke's_law). Springs also have\n // configurable friction, which ensures that they do not oscillate\n // infinitely. When a Spring is displaced by updating it's resting\n // or `currentValue`, the SpringSystems that contain that Spring\n // will automatically start looping to solve for equilibrium. As each\n // timestep passes, `SpringListener` objects attached to the Spring\n // will be notified of the updates providing a way to drive an\n // animation off of the spring's resolution curve.\n var Spring = rebound.Spring = function Spring(springSystem) {\n this._id = 's' + Spring._ID++;\n this._springSystem = springSystem;\n this.listeners = [];\n this._currentState = new PhysicsState();\n this._previousState = new PhysicsState();\n this._tempState = new PhysicsState();\n };\n\n util.extend(Spring, {\n _ID: 0,\n\n MAX_DELTA_TIME_SEC: 0.064,\n\n SOLVER_TIMESTEP_SEC: 0.001\n\n });\n\n util.extend(Spring.prototype, {\n\n _id: 0,\n\n _springConfig: null,\n\n _overshootClampingEnabled: false,\n\n _currentState: null,\n\n _previousState: null,\n\n _tempState: null,\n\n _startValue: 0,\n\n _endValue: 0,\n\n _wasAtRest: true,\n\n _restSpeedThreshold: 0.001,\n\n _displacementFromRestThreshold: 0.001,\n\n listeners: null,\n\n _timeAccumulator: 0,\n\n _springSystem: null,\n\n // Remove a Spring from simulation and clear its listeners.\n destroy: function() {\n this.listeners = [];\n this.frames = [];\n this._springSystem.deregisterSpring(this);\n },\n\n // Get the id of the spring, which can be used to retrieve it from\n // the SpringSystems it participates in later.\n getId: function() {\n return this._id;\n },\n\n // Set the configuration values for this Spring. A SpringConfig\n // contains the tension and friction values used to solve for the\n // equilibrium of the Spring in the physics loop.\n setSpringConfig: function(springConfig) {\n this._springConfig = springConfig;\n return this;\n },\n\n // Retrieve the SpringConfig used by this Spring.\n getSpringConfig: function() {\n return this._springConfig;\n },\n\n // Set the current position of this Spring. Listeners will be updated\n // with this value immediately. If the rest or `endValue` is not\n // updated to match this value, then the spring will be dispalced and\n // the SpringSystem will start to loop to restore the spring to the\n // `endValue`.\n //\n // A common pattern is to move a Spring around without animation by\n // calling.\n //\n // ```\n // spring.setCurrentValue(n).setAtRest();\n // ```\n //\n // This moves the Spring to a new position `n`, sets the endValue\n // to `n`, and removes any velocity from the `Spring`. By doing\n // this you can allow the `SpringListener` to manage the position\n // of UI elements attached to the spring even when moving without\n // animation. For example, when dragging an element you can\n // update the position of an attached view through a spring\n // by calling `spring.setCurrentValue(x)`. When\n // the gesture ends you can update the Springs\n // velocity and endValue\n // `spring.setVelocity(gestureEndVelocity).setEndValue(flingTarget)`\n // to cause it to naturally animate the UI element to the resting\n // position taking into account existing velocity. The codepaths for\n // synchronous movement and spring driven animation can\n // be unified using this technique.\n setCurrentValue: function(currentValue, skipSetAtRest) {\n this._startValue = currentValue;\n this._currentState.position = currentValue;\n if (!skipSetAtRest) {\n this.setAtRest();\n }\n this.notifyPositionUpdated(false, false);\n return this;\n },\n\n // Get the position that the most recent animation started at. This\n // can be useful for determining the number off oscillations that\n // have occurred.\n getStartValue: function() {\n return this._startValue;\n },\n\n // Retrieve the current value of the Spring.\n getCurrentValue: function() {\n return this._currentState.position;\n },\n\n // Get the absolute distance of the Spring from it's resting endValue\n // position.\n getCurrentDisplacementDistance: function() {\n return this.getDisplacementDistanceForState(this._currentState);\n },\n\n getDisplacementDistanceForState: function(state) {\n return Math.abs(this._endValue - state.position);\n },\n\n // Set the endValue or resting position of the spring. If this\n // value is different than the current value, the SpringSystem will\n // be notified and will begin running its solver loop to resolve\n // the Spring to equilibrium. Any listeners that are registered\n // for onSpringEndStateChange will also be notified of this update\n // immediately.\n setEndValue: function(endValue) {\n if (this._endValue == endValue && this.isAtRest()) {\n return this;\n }\n this._startValue = this.getCurrentValue();\n this._endValue = endValue;\n this._springSystem.activateSpring(this.getId());\n for (var i = 0, len = this.listeners.length; i < len; i++) {\n var listener = this.listeners[i];\n var onChange = listener.onSpringEndStateChange;\n onChange && onChange(this);\n }\n return this;\n },\n\n // Retrieve the endValue or resting position of this spring.\n getEndValue: function() {\n return this._endValue;\n },\n\n // Set the current velocity of the Spring. As previously mentioned,\n // this can be useful when you are performing a direct manipulation\n // gesture. When a UI element is released you may call setVelocity\n // on its animation Spring so that the Spring continues with the\n // same velocity as the gesture ended with. The friction, tension,\n // and displacement of the Spring will then govern its motion to\n // return to rest on a natural feeling curve.\n setVelocity: function(velocity) {\n if (velocity === this._currentState.velocity) {\n return this;\n }\n this._currentState.velocity = velocity;\n this._springSystem.activateSpring(this.getId());\n return this;\n },\n\n // Get the current velocity of the Spring.\n getVelocity: function() {\n return this._currentState.velocity;\n },\n\n // Set a threshold value for the movement speed of the Spring below\n // which it will be considered to be not moving or resting.\n setRestSpeedThreshold: function(restSpeedThreshold) {\n this._restSpeedThreshold = restSpeedThreshold;\n return this;\n },\n\n // Retrieve the rest speed threshold for this Spring.\n getRestSpeedThreshold: function() {\n return this._restSpeedThreshold;\n },\n\n // Set a threshold value for displacement below which the Spring\n // will be considered to be not displaced i.e. at its resting\n // `endValue`.\n setRestDisplacementThreshold: function(displacementFromRestThreshold) {\n this._displacementFromRestThreshold = displacementFromRestThreshold;\n },\n\n // Retrieve the rest displacement threshold for this spring.\n getRestDisplacementThreshold: function() {\n return this._displacementFromRestThreshold;\n },\n\n // Enable overshoot clamping. This means that the Spring will stop\n // immediately when it reaches its resting position regardless of\n // any existing momentum it may have. This can be useful for certain\n // types of animations that should not oscillate such as a scale\n // down to 0 or alpha fade.\n setOvershootClampingEnabled: function(enabled) {\n this._overshootClampingEnabled = enabled;\n return this;\n },\n\n // Check if overshoot clamping is enabled for this spring.\n isOvershootClampingEnabled: function() {\n return this._overshootClampingEnabled;\n },\n\n // Check if the Spring has gone past its end point by comparing\n // the direction it was moving in when it started to the current\n // position and end value.\n isOvershooting: function() {\n var start = this._startValue;\n var end = this._endValue;\n return this._springConfig.tension > 0 &&\n ((start < end && this.getCurrentValue() > end) ||\n (start > end && this.getCurrentValue() < end));\n },\n\n // Spring.advance is the main solver method for the Spring. It takes\n // the current time and delta since the last time step and performs\n // an RK4 integration to get the new position and velocity state\n // for the Spring based on the tension, friction, velocity, and\n // displacement of the Spring.\n advance: function(time, realDeltaTime) {\n var isAtRest = this.isAtRest();\n\n if (isAtRest && this._wasAtRest) {\n return;\n }\n\n var adjustedDeltaTime = realDeltaTime;\n if (realDeltaTime > Spring.MAX_DELTA_TIME_SEC) {\n adjustedDeltaTime = Spring.MAX_DELTA_TIME_SEC;\n }\n\n this._timeAccumulator += adjustedDeltaTime;\n\n var tension = this._springConfig.tension,\n friction = this._springConfig.friction,\n\n position = this._currentState.position,\n velocity = this._currentState.velocity,\n tempPosition = this._tempState.position,\n tempVelocity = this._tempState.velocity,\n\n aVelocity, aAcceleration,\n bVelocity, bAcceleration,\n cVelocity, cAcceleration,\n dVelocity, dAcceleration,\n\n dxdt, dvdt;\n\n while(this._timeAccumulator >= Spring.SOLVER_TIMESTEP_SEC) {\n\n this._timeAccumulator -= Spring.SOLVER_TIMESTEP_SEC;\n\n if (this._timeAccumulator < Spring.SOLVER_TIMESTEP_SEC) {\n this._previousState.position = position;\n this._previousState.velocity = velocity;\n }\n\n aVelocity = velocity;\n aAcceleration =\n (tension * (this._endValue - tempPosition)) - friction * velocity;\n\n tempPosition = position + aVelocity * Spring.SOLVER_TIMESTEP_SEC * 0.5;\n tempVelocity =\n velocity + aAcceleration * Spring.SOLVER_TIMESTEP_SEC * 0.5;\n bVelocity = tempVelocity;\n bAcceleration =\n (tension * (this._endValue - tempPosition)) - friction * tempVelocity;\n\n tempPosition = position + bVelocity * Spring.SOLVER_TIMESTEP_SEC * 0.5;\n tempVelocity =\n velocity + bAcceleration * Spring.SOLVER_TIMESTEP_SEC * 0.5;\n cVelocity = tempVelocity;\n cAcceleration =\n (tension * (this._endValue - tempPosition)) - friction * tempVelocity;\n\n tempPosition = position + cVelocity * Spring.SOLVER_TIMESTEP_SEC * 0.5;\n tempVelocity =\n velocity + cAcceleration * Spring.SOLVER_TIMESTEP_SEC * 0.5;\n dVelocity = tempVelocity;\n dAcceleration =\n (tension * (this._endValue - tempPosition)) - friction * tempVelocity;\n\n dxdt =\n 1.0/6.0 * (aVelocity + 2.0 * (bVelocity + cVelocity) + dVelocity);\n dvdt = 1.0/6.0 * (\n aAcceleration + 2.0 * (bAcceleration + cAcceleration) + dAcceleration\n );\n\n position += dxdt * Spring.SOLVER_TIMESTEP_SEC;\n velocity += dvdt * Spring.SOLVER_TIMESTEP_SEC;\n }\n\n this._tempState.position = tempPosition;\n this._tempState.velocity = tempVelocity;\n\n this._currentState.position = position;\n this._currentState.velocity = velocity;\n\n if (this._timeAccumulator > 0) {\n this._interpolate(this._timeAccumulator / Spring.SOLVER_TIMESTEP_SEC);\n }\n\n if (this.isAtRest() ||\n this._overshootClampingEnabled && this.isOvershooting()) {\n\n if (this._springConfig.tension > 0) {\n this._startValue = this._endValue;\n this._currentState.position = this._endValue;\n } else {\n this._endValue = this._currentState.position;\n this._startValue = this._endValue;\n }\n this.setVelocity(0);\n isAtRest = true;\n }\n\n var notifyActivate = false;\n if (this._wasAtRest) {\n this._wasAtRest = false;\n notifyActivate = true;\n }\n\n var notifyAtRest = false;\n if (isAtRest) {\n this._wasAtRest = true;\n notifyAtRest = true;\n }\n\n this.notifyPositionUpdated(notifyActivate, notifyAtRest);\n },\n\n notifyPositionUpdated: function(notifyActivate, notifyAtRest) {\n for (var i = 0, len = this.listeners.length; i < len; i++) {\n var listener = this.listeners[i];\n if (notifyActivate && listener.onSpringActivate) {\n listener.onSpringActivate(this);\n }\n\n if (listener.onSpringUpdate) {\n listener.onSpringUpdate(this);\n }\n\n if (notifyAtRest && listener.onSpringAtRest) {\n listener.onSpringAtRest(this);\n }\n }\n },\n\n\n // Check if the SpringSystem should advance. Springs are advanced\n // a final frame after they reach equilibrium to ensure that the\n // currentValue is exactly the requested endValue regardless of the\n // displacement threshold.\n systemShouldAdvance: function() {\n return !this.isAtRest() || !this.wasAtRest();\n },\n\n wasAtRest: function() {\n return this._wasAtRest;\n },\n\n // Check if the Spring is atRest meaning that it's currentValue and\n // endValue are the same and that it has no velocity. The previously\n // described thresholds for speed and displacement define the bounds\n // of this equivalence check. If the Spring has 0 tension, then it will\n // be considered at rest whenever its absolute velocity drops below the\n // restSpeedThreshold.\n isAtRest: function() {\n return Math.abs(this._currentState.velocity) < this._restSpeedThreshold &&\n (this.getDisplacementDistanceForState(this._currentState) <=\n this._displacementFromRestThreshold ||\n this._springConfig.tension === 0);\n },\n\n // Force the spring to be at rest at its current position. As\n // described in the documentation for setCurrentValue, this method\n // makes it easy to do synchronous non-animated updates to ui\n // elements that are attached to springs via SpringListeners.\n setAtRest: function() {\n this._endValue = this._currentState.position;\n this._tempState.position = this._currentState.position;\n this._currentState.velocity = 0;\n return this;\n },\n\n _interpolate: function(alpha) {\n this._currentState.position = this._currentState.position *\n alpha + this._previousState.position * (1 - alpha);\n this._currentState.velocity = this._currentState.velocity *\n alpha + this._previousState.velocity * (1 - alpha);\n },\n\n getListeners: function() {\n return this.listeners;\n },\n\n addListener: function(newListener) {\n this.listeners.push(newListener);\n return this;\n },\n\n removeListener: function(listenerToRemove) {\n removeFirst(this.listeners, listenerToRemove);\n return this;\n },\n\n removeAllListeners: function() {\n this.listeners = [];\n return this;\n },\n\n currentValueIsApproximately: function(value) {\n return Math.abs(this.getCurrentValue() - value) <=\n this.getRestDisplacementThreshold();\n }\n\n });\n\n // PhysicsState\n // ------------\n // **PhysicsState** consists of a position and velocity. A Spring uses\n // this internally to keep track of its current and prior position and\n // velocity values.\n var PhysicsState = function PhysicsState() {};\n\n util.extend(PhysicsState.prototype, {\n position: 0,\n velocity: 0\n });\n\n // SpringConfig\n // ------------\n // **SpringConfig** maintains a set of tension and friction constants\n // for a Spring. You can use fromOrigamiTensionAndFriction to convert\n // values from the [Origami](http://facebook.github.io/origami/)\n // design tool directly to Rebound spring constants.\n var SpringConfig = rebound.SpringConfig =\n function SpringConfig(tension, friction) {\n this.tension = tension;\n this.friction = friction;\n };\n\n // Loopers\n // -------\n // **AnimationLooper** plays each frame of the SpringSystem on animation\n // timing loop. This is the default type of looper for a new spring system\n // as it is the most common when developing UI.\n var AnimationLooper = rebound.AnimationLooper = function AnimationLooper() {\n this.springSystem = null;\n var _this = this;\n var _run = function() {\n _this.springSystem.loop(Date.now());\n };\n\n this.run = function() {\n util.onFrame(_run);\n };\n };\n\n // **SimulationLooper** resolves the SpringSystem to a resting state in a\n // tight and blocking loop. This is useful for synchronously generating\n // pre-recorded animations that can then be played on a timing loop later.\n // Sometimes this lead to better performance to pre-record a single spring\n // curve and use it to drive many animations; however, it can make dynamic\n // response to user input a bit trickier to implement.\n rebound.SimulationLooper = function SimulationLooper(timestep) {\n this.springSystem = null;\n var time = 0;\n var running = false;\n timestep=timestep || 16.667;\n\n this.run = function() {\n if (running) {\n return;\n }\n running = true;\n while(!this.springSystem.getIsIdle()) {\n this.springSystem.loop(time+=timestep);\n }\n running = false;\n };\n };\n\n // **SteppingSimulationLooper** resolves the SpringSystem one step at a\n // time controlled by an outside loop. This is useful for testing and\n // verifying the behavior of a SpringSystem or if you want to control your own\n // timing loop for some reason e.g. slowing down or speeding up the\n // simulation.\n rebound.SteppingSimulationLooper = function(timestep) {\n this.springSystem = null;\n var time = 0;\n\n // this.run is NOOP'd here to allow control from the outside using\n // this.step.\n this.run = function(){};\n\n // Perform one step toward resolving the SpringSystem.\n this.step = function(timestep) {\n this.springSystem.loop(time+=timestep);\n };\n };\n\n // Math for converting from\n // [Origami](http://facebook.github.io/origami/) to\n // [Rebound](http://facebook.github.io/rebound).\n // You mostly don't need to worry about this, just use\n // SpringConfig.fromOrigamiTensionAndFriction(v, v);\n var OrigamiValueConverter = rebound.OrigamiValueConverter = {\n tensionFromOrigamiValue: function(oValue) {\n return (oValue - 30.0) * 3.62 + 194.0;\n },\n\n origamiValueFromTension: function(tension) {\n return (tension - 194.0) / 3.62 + 30.0;\n },\n\n frictionFromOrigamiValue: function(oValue) {\n return (oValue - 8.0) * 3.0 + 25.0;\n },\n\n origamiFromFriction: function(friction) {\n return (friction - 25.0) / 3.0 + 8.0;\n }\n };\n\n // BouncyConversion provides math for converting from Origami PopAnimation\n // config values to regular Origami tension and friction values. If you are\n // trying to replicate prototypes made with PopAnimation patches in Origami,\n // then you should create your springs with\n // SpringSystem.createSpringWithBouncinessAndSpeed, which uses this Math\n // internally to create a spring to match the provided PopAnimation\n // configuration from Origami.\n var BouncyConversion = rebound.BouncyConversion = function(bounciness, speed){\n this.bounciness = bounciness;\n this.speed = speed;\n var b = this.normalize(bounciness / 1.7, 0, 20.0);\n b = this.projectNormal(b, 0.0, 0.8);\n var s = this.normalize(speed / 1.7, 0, 20.0);\n this.bouncyTension = this.projectNormal(s, 0.5, 200)\n this.bouncyFriction = this.quadraticOutInterpolation(\n b,\n this.b3Nobounce(this.bouncyTension),\n 0.01);\n }\n\n util.extend(BouncyConversion.prototype, {\n\n normalize: function(value, startValue, endValue) {\n return (value - startValue) / (endValue - startValue);\n },\n\n projectNormal: function(n, start, end) {\n return start + (n * (end - start));\n },\n\n linearInterpolation: function(t, start, end) {\n return t * end + (1.0 - t) * start;\n },\n\n quadraticOutInterpolation: function(t, start, end) {\n return this.linearInterpolation(2*t - t*t, start, end);\n },\n\n b3Friction1: function(x) {\n return (0.0007 * Math.pow(x, 3)) -\n (0.031 * Math.pow(x, 2)) + 0.64 * x + 1.28;\n },\n\n b3Friction2: function(x) {\n return (0.000044 * Math.pow(x, 3)) -\n (0.006 * Math.pow(x, 2)) + 0.36 * x + 2.;\n },\n\n b3Friction3: function(x) {\n return (0.00000045 * Math.pow(x, 3)) -\n (0.000332 * Math.pow(x, 2)) + 0.1078 * x + 5.84;\n },\n\n b3Nobounce: function(tension) {\n var friction = 0;\n if (tension <= 18) {\n friction = this.b3Friction1(tension);\n } else if (tension > 18 && tension <= 44) {\n friction = this.b3Friction2(tension);\n } else {\n friction = this.b3Friction3(tension);\n }\n return friction;\n }\n });\n\n util.extend(SpringConfig, {\n // Convert an origami Spring tension and friction to Rebound spring\n // constants. If you are prototyping a design with Origami, this\n // makes it easy to make your springs behave exactly the same in\n // Rebound.\n fromOrigamiTensionAndFriction: function(tension, friction) {\n return new SpringConfig(\n OrigamiValueConverter.tensionFromOrigamiValue(tension),\n OrigamiValueConverter.frictionFromOrigamiValue(friction));\n },\n\n // Convert an origami PopAnimation Spring bounciness and speed to Rebound\n // spring constants. If you are using PopAnimation patches in Origami, this\n // utility will provide springs that match your prototype.\n fromBouncinessAndSpeed: function(bounciness, speed) {\n var bouncyConversion = new rebound.BouncyConversion(bounciness, speed);\n return this.fromOrigamiTensionAndFriction(\n bouncyConversion.bouncyTension,\n bouncyConversion.bouncyFriction);\n },\n\n // Create a SpringConfig with no tension or a coasting spring with some\n // amount of Friction so that it does not coast infininitely.\n coastingConfigWithOrigamiFriction: function(friction) {\n return new SpringConfig(\n 0,\n OrigamiValueConverter.frictionFromOrigamiValue(friction)\n );\n }\n });\n\n SpringConfig.DEFAULT_ORIGAMI_SPRING_CONFIG =\n SpringConfig.fromOrigamiTensionAndFriction(40, 7);\n\n util.extend(SpringConfig.prototype, {friction: 0, tension: 0});\n\n // Here are a couple of function to convert colors between hex codes and RGB\n // component values. These are handy when performing color\n // tweening animations.\n var colorCache = {};\n util.hexToRGB = function(color) {\n if (colorCache[color]) {\n return colorCache[color];\n }\n color = color.replace('#', '');\n if (color.length === 3) {\n color = color[0] + color[0] + color[1] + color[1] + color[2] + color[2];\n }\n var parts = color.match(/.{2}/g);\n\n var ret = {\n r: parseInt(parts[0], 16),\n g: parseInt(parts[1], 16),\n b: parseInt(parts[2], 16)\n };\n\n colorCache[color] = ret;\n return ret;\n };\n\n util.rgbToHex = function(r, g, b) {\n r = r.toString(16);\n g = g.toString(16);\n b = b.toString(16);\n r = r.length < 2 ? '0' + r : r;\n g = g.length < 2 ? '0' + g : g;\n b = b.length < 2 ? '0' + b : b;\n return '#' + r + g + b;\n };\n\n var MathUtil = rebound.MathUtil = {\n // This helper function does a linear interpolation of a value from\n // one range to another. This can be very useful for converting the\n // motion of a Spring to a range of UI property values. For example a\n // spring moving from position 0 to 1 could be interpolated to move a\n // view from pixel 300 to 350 and scale it from 0.5 to 1. The current\n // position of the `Spring` just needs to be run through this method\n // taking its input range in the _from_ parameters with the property\n // animation range in the _to_ parameters.\n mapValueInRange: function(value, fromLow, fromHigh, toLow, toHigh) {\n var fromRangeSize = fromHigh - fromLow;\n var toRangeSize = toHigh - toLow;\n var valueScale = (value - fromLow) / fromRangeSize;\n return toLow + (valueScale * toRangeSize);\n },\n\n // Interpolate two hex colors in a 0 - 1 range or optionally provide a\n // custom range with fromLow,fromHight. The output will be in hex by default\n // unless asRGB is true in which case it will be returned as an rgb string.\n interpolateColor:\n function(val, startColor, endColor, fromLow, fromHigh, asRGB) {\n fromLow = fromLow === undefined ? 0 : fromLow;\n fromHigh = fromHigh === undefined ? 1 : fromHigh;\n startColor = util.hexToRGB(startColor);\n endColor = util.hexToRGB(endColor);\n var r = Math.floor(\n util.mapValueInRange(val, fromLow, fromHigh, startColor.r, endColor.r)\n );\n var g = Math.floor(\n util.mapValueInRange(val, fromLow, fromHigh, startColor.g, endColor.g)\n );\n var b = Math.floor(\n util.mapValueInRange(val, fromLow, fromHigh, startColor.b, endColor.b)\n );\n if (asRGB) {\n return 'rgb(' + r + ',' + g + ',' + b + ')';\n } else {\n return util.rgbToHex(r, g, b);\n }\n },\n\n degreesToRadians: function(deg) {\n return (deg * Math.PI) / 180;\n },\n\n radiansToDegrees: function(rad) {\n return (rad * 180) / Math.PI;\n }\n\n }\n\n util.extend(util, MathUtil);\n\n\n // Utilities\n // ---------\n // Here are a few useful JavaScript utilities.\n\n // Lop off the first occurence of the reference in the Array.\n function removeFirst(array, item) {\n var idx = array.indexOf(item);\n idx != -1 && array.splice(idx, 1);\n }\n\n var _onFrame;\n if (typeof window !== 'undefined') {\n _onFrame = window.requestAnimationFrame ||\n window.webkitRequestAnimationFrame ||\n window.mozRequestAnimationFrame ||\n window.msRequestAnimationFrame ||\n window.oRequestAnimationFrame ||\n function(callback) {\n window.setTimeout(callback, 1000 / 60);\n };\n }\n if (!_onFrame && typeof process !== 'undefined' && process.title === 'node') {\n _onFrame = setImmediate;\n }\n\n // Cross browser/node timer functions.\n util.onFrame = function onFrame(func) {\n return _onFrame(func);\n };\n\n // Export the public api using exports for common js or the window for\n // normal browser inclusion.\n if (typeof exports != 'undefined') {\n util.extend(exports, rebound);\n } else if (typeof window != 'undefined') {\n window.rebound = rebound;\n }\n})();\n\n\n// Legal Stuff\n// -----------\n/**\n * Copyright (c) 2013, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n */\n","'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar Direction = {\n DOWN: Symbol('DOWN'),\n INVALID: Symbol('INVALID'),\n LEFT: Symbol('LEFT'),\n RIGHT: Symbol('RIGHT'),\n UP: Symbol('UP')\n};\n\nexports.default = Direction;\nmodule.exports = exports['default'];","\"use strict\";\n\nrequire(\"./noConflict\");\n\nvar _global = _interopRequireDefault(require(\"core-js/library/fn/global\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { \"default\": obj }; }\n\nif (_global[\"default\"]._babelPolyfill && typeof console !== \"undefined\" && console.warn) {\n console.warn(\"@babel/polyfill is loaded more than once on this page. This is probably not desirable/intended \" + \"and may have consequences if different versions of the polyfills are applied sequentially. \" + \"If you do need to load the polyfill more than once, use @babel/polyfill/noConflict \" + \"instead to bypass the warning.\");\n}\n\n_global[\"default\"]._babelPolyfill = true;","\"use strict\";\n\nrequire(\"core-js/es6\");\n\nrequire(\"core-js/fn/array/includes\");\n\nrequire(\"core-js/fn/array/flat-map\");\n\nrequire(\"core-js/fn/string/pad-start\");\n\nrequire(\"core-js/fn/string/pad-end\");\n\nrequire(\"core-js/fn/string/trim-start\");\n\nrequire(\"core-js/fn/string/trim-end\");\n\nrequire(\"core-js/fn/symbol/async-iterator\");\n\nrequire(\"core-js/fn/object/get-own-property-descriptors\");\n\nrequire(\"core-js/fn/object/values\");\n\nrequire(\"core-js/fn/object/entries\");\n\nrequire(\"core-js/fn/promise/finally\");\n\nrequire(\"core-js/web\");\n\nrequire(\"regenerator-runtime/runtime\");","require('../modules/es6.symbol');\nrequire('../modules/es6.object.create');\nrequire('../modules/es6.object.define-property');\nrequire('../modules/es6.object.define-properties');\nrequire('../modules/es6.object.get-own-property-descriptor');\nrequire('../modules/es6.object.get-prototype-of');\nrequire('../modules/es6.object.keys');\nrequire('../modules/es6.object.get-own-property-names');\nrequire('../modules/es6.object.freeze');\nrequire('../modules/es6.object.seal');\nrequire('../modules/es6.object.prevent-extensions');\nrequire('../modules/es6.object.is-frozen');\nrequire('../modules/es6.object.is-sealed');\nrequire('../modules/es6.object.is-extensible');\nrequire('../modules/es6.object.assign');\nrequire('../modules/es6.object.is');\nrequire('../modules/es6.object.set-prototype-of');\nrequire('../modules/es6.object.to-string');\nrequire('../modules/es6.function.bind');\nrequire('../modules/es6.function.name');\nrequire('../modules/es6.function.has-instance');\nrequire('../modules/es6.parse-int');\nrequire('../modules/es6.parse-float');\nrequire('../modules/es6.number.constructor');\nrequire('../modules/es6.number.to-fixed');\nrequire('../modules/es6.number.to-precision');\nrequire('../modules/es6.number.epsilon');\nrequire('../modules/es6.number.is-finite');\nrequire('../modules/es6.number.is-integer');\nrequire('../modules/es6.number.is-nan');\nrequire('../modules/es6.number.is-safe-integer');\nrequire('../modules/es6.number.max-safe-integer');\nrequire('../modules/es6.number.min-safe-integer');\nrequire('../modules/es6.number.parse-float');\nrequire('../modules/es6.number.parse-int');\nrequire('../modules/es6.math.acosh');\nrequire('../modules/es6.math.asinh');\nrequire('../modules/es6.math.atanh');\nrequire('../modules/es6.math.cbrt');\nrequire('../modules/es6.math.clz32');\nrequire('../modules/es6.math.cosh');\nrequire('../modules/es6.math.expm1');\nrequire('../modules/es6.math.fround');\nrequire('../modules/es6.math.hypot');\nrequire('../modules/es6.math.imul');\nrequire('../modules/es6.math.log10');\nrequire('../modules/es6.math.log1p');\nrequire('../modules/es6.math.log2');\nrequire('../modules/es6.math.sign');\nrequire('../modules/es6.math.sinh');\nrequire('../modules/es6.math.tanh');\nrequire('../modules/es6.math.trunc');\nrequire('../modules/es6.string.from-code-point');\nrequire('../modules/es6.string.raw');\nrequire('../modules/es6.string.trim');\nrequire('../modules/es6.string.iterator');\nrequire('../modules/es6.string.code-point-at');\nrequire('../modules/es6.string.ends-with');\nrequire('../modules/es6.string.includes');\nrequire('../modules/es6.string.repeat');\nrequire('../modules/es6.string.starts-with');\nrequire('../modules/es6.string.anchor');\nrequire('../modules/es6.string.big');\nrequire('../modules/es6.string.blink');\nrequire('../modules/es6.string.bold');\nrequire('../modules/es6.string.fixed');\nrequire('../modules/es6.string.fontcolor');\nrequire('../modules/es6.string.fontsize');\nrequire('../modules/es6.string.italics');\nrequire('../modules/es6.string.link');\nrequire('../modules/es6.string.small');\nrequire('../modules/es6.string.strike');\nrequire('../modules/es6.string.sub');\nrequire('../modules/es6.string.sup');\nrequire('../modules/es6.date.now');\nrequire('../modules/es6.date.to-json');\nrequire('../modules/es6.date.to-iso-string');\nrequire('../modules/es6.date.to-string');\nrequire('../modules/es6.date.to-primitive');\nrequire('../modules/es6.array.is-array');\nrequire('../modules/es6.array.from');\nrequire('../modules/es6.array.of');\nrequire('../modules/es6.array.join');\nrequire('../modules/es6.array.slice');\nrequire('../modules/es6.array.sort');\nrequire('../modules/es6.array.for-each');\nrequire('../modules/es6.array.map');\nrequire('../modules/es6.array.filter');\nrequire('../modules/es6.array.some');\nrequire('../modules/es6.array.every');\nrequire('../modules/es6.array.reduce');\nrequire('../modules/es6.array.reduce-right');\nrequire('../modules/es6.array.index-of');\nrequire('../modules/es6.array.last-index-of');\nrequire('../modules/es6.array.copy-within');\nrequire('../modules/es6.array.fill');\nrequire('../modules/es6.array.find');\nrequire('../modules/es6.array.find-index');\nrequire('../modules/es6.array.species');\nrequire('../modules/es6.array.iterator');\nrequire('../modules/es6.regexp.constructor');\nrequire('../modules/es6.regexp.exec');\nrequire('../modules/es6.regexp.to-string');\nrequire('../modules/es6.regexp.flags');\nrequire('../modules/es6.regexp.match');\nrequire('../modules/es6.regexp.replace');\nrequire('../modules/es6.regexp.search');\nrequire('../modules/es6.regexp.split');\nrequire('../modules/es6.promise');\nrequire('../modules/es6.map');\nrequire('../modules/es6.set');\nrequire('../modules/es6.weak-map');\nrequire('../modules/es6.weak-set');\nrequire('../modules/es6.typed.array-buffer');\nrequire('../modules/es6.typed.data-view');\nrequire('../modules/es6.typed.int8-array');\nrequire('../modules/es6.typed.uint8-array');\nrequire('../modules/es6.typed.uint8-clamped-array');\nrequire('../modules/es6.typed.int16-array');\nrequire('../modules/es6.typed.uint16-array');\nrequire('../modules/es6.typed.int32-array');\nrequire('../modules/es6.typed.uint32-array');\nrequire('../modules/es6.typed.float32-array');\nrequire('../modules/es6.typed.float64-array');\nrequire('../modules/es6.reflect.apply');\nrequire('../modules/es6.reflect.construct');\nrequire('../modules/es6.reflect.define-property');\nrequire('../modules/es6.reflect.delete-property');\nrequire('../modules/es6.reflect.enumerate');\nrequire('../modules/es6.reflect.get');\nrequire('../modules/es6.reflect.get-own-property-descriptor');\nrequire('../modules/es6.reflect.get-prototype-of');\nrequire('../modules/es6.reflect.has');\nrequire('../modules/es6.reflect.is-extensible');\nrequire('../modules/es6.reflect.own-keys');\nrequire('../modules/es6.reflect.prevent-extensions');\nrequire('../modules/es6.reflect.set');\nrequire('../modules/es6.reflect.set-prototype-of');\nmodule.exports = require('../modules/_core');\n","var $export = require('./_export');\n// 19.1.2.2 / 15.2.3.5 Object.create(O [, Properties])\n$export($export.S, 'Object', { create: require('./_object-create') });\n","var $export = require('./_export');\n// 19.1.2.4 / 15.2.3.6 Object.defineProperty(O, P, Attributes)\n$export($export.S + $export.F * !require('./_descriptors'), 'Object', { defineProperty: require('./_object-dp').f });\n","var $export = require('./_export');\n// 19.1.2.3 / 15.2.3.7 Object.defineProperties(O, Properties)\n$export($export.S + $export.F * !require('./_descriptors'), 'Object', { defineProperties: require('./_object-dps') });\n","// 19.1.2.6 Object.getOwnPropertyDescriptor(O, P)\nvar toIObject = require('./_to-iobject');\nvar $getOwnPropertyDescriptor = require('./_object-gopd').f;\n\nrequire('./_object-sap')('getOwnPropertyDescriptor', function () {\n return function getOwnPropertyDescriptor(it, key) {\n return $getOwnPropertyDescriptor(toIObject(it), key);\n };\n});\n","// 19.1.2.9 Object.getPrototypeOf(O)\nvar toObject = require('./_to-object');\nvar $getPrototypeOf = require('./_object-gpo');\n\nrequire('./_object-sap')('getPrototypeOf', function () {\n return function getPrototypeOf(it) {\n return $getPrototypeOf(toObject(it));\n };\n});\n","// 19.1.2.14 Object.keys(O)\nvar toObject = require('./_to-object');\nvar $keys = require('./_object-keys');\n\nrequire('./_object-sap')('keys', function () {\n return function keys(it) {\n return $keys(toObject(it));\n };\n});\n","// 19.1.2.7 Object.getOwnPropertyNames(O)\nrequire('./_object-sap')('getOwnPropertyNames', function () {\n return require('./_object-gopn-ext').f;\n});\n","// 19.1.2.5 Object.freeze(O)\nvar isObject = require('./_is-object');\nvar meta = require('./_meta').onFreeze;\n\nrequire('./_object-sap')('freeze', function ($freeze) {\n return function freeze(it) {\n return $freeze && isObject(it) ? $freeze(meta(it)) : it;\n };\n});\n","// 19.1.2.17 Object.seal(O)\nvar isObject = require('./_is-object');\nvar meta = require('./_meta').onFreeze;\n\nrequire('./_object-sap')('seal', function ($seal) {\n return function seal(it) {\n return $seal && isObject(it) ? $seal(meta(it)) : it;\n };\n});\n","// 19.1.2.15 Object.preventExtensions(O)\nvar isObject = require('./_is-object');\nvar meta = require('./_meta').onFreeze;\n\nrequire('./_object-sap')('preventExtensions', function ($preventExtensions) {\n return function preventExtensions(it) {\n return $preventExtensions && isObject(it) ? $preventExtensions(meta(it)) : it;\n };\n});\n","// 19.1.2.12 Object.isFrozen(O)\nvar isObject = require('./_is-object');\n\nrequire('./_object-sap')('isFrozen', function ($isFrozen) {\n return function isFrozen(it) {\n return isObject(it) ? $isFrozen ? $isFrozen(it) : false : true;\n };\n});\n","// 19.1.2.13 Object.isSealed(O)\nvar isObject = require('./_is-object');\n\nrequire('./_object-sap')('isSealed', function ($isSealed) {\n return function isSealed(it) {\n return isObject(it) ? $isSealed ? $isSealed(it) : false : true;\n };\n});\n","// 19.1.2.11 Object.isExtensible(O)\nvar isObject = require('./_is-object');\n\nrequire('./_object-sap')('isExtensible', function ($isExtensible) {\n return function isExtensible(it) {\n return isObject(it) ? $isExtensible ? $isExtensible(it) : true : false;\n };\n});\n","// 19.1.3.1 Object.assign(target, source)\nvar $export = require('./_export');\n\n$export($export.S + $export.F, 'Object', { assign: require('./_object-assign') });\n","// 19.1.3.10 Object.is(value1, value2)\nvar $export = require('./_export');\n$export($export.S, 'Object', { is: require('./_same-value') });\n","// 19.1.3.19 Object.setPrototypeOf(O, proto)\nvar $export = require('./_export');\n$export($export.S, 'Object', { setPrototypeOf: require('./_set-proto').set });\n","// 19.2.3.2 / 15.3.4.5 Function.prototype.bind(thisArg, args...)\nvar $export = require('./_export');\n\n$export($export.P, 'Function', { bind: require('./_bind') });\n","var dP = require('./_object-dp').f;\nvar FProto = Function.prototype;\nvar nameRE = /^\\s*function ([^ (]*)/;\nvar NAME = 'name';\n\n// 19.2.4.2 name\nNAME in FProto || require('./_descriptors') && dP(FProto, NAME, {\n configurable: true,\n get: function () {\n try {\n return ('' + this).match(nameRE)[1];\n } catch (e) {\n return '';\n }\n }\n});\n","'use strict';\nvar isObject = require('./_is-object');\nvar getPrototypeOf = require('./_object-gpo');\nvar HAS_INSTANCE = require('./_wks')('hasInstance');\nvar FunctionProto = Function.prototype;\n// 19.2.3.6 Function.prototype[@@hasInstance](V)\nif (!(HAS_INSTANCE in FunctionProto)) require('./_object-dp').f(FunctionProto, HAS_INSTANCE, { value: function (O) {\n if (typeof this != 'function' || !isObject(O)) return false;\n if (!isObject(this.prototype)) return O instanceof this;\n // for environment w/o native `@@hasInstance` logic enough `instanceof`, but add this:\n while (O = getPrototypeOf(O)) if (this.prototype === O) return true;\n return false;\n} });\n","var $export = require('./_export');\nvar $parseInt = require('./_parse-int');\n// 18.2.5 parseInt(string, radix)\n$export($export.G + $export.F * (parseInt != $parseInt), { parseInt: $parseInt });\n","var $export = require('./_export');\nvar $parseFloat = require('./_parse-float');\n// 18.2.4 parseFloat(string)\n$export($export.G + $export.F * (parseFloat != $parseFloat), { parseFloat: $parseFloat });\n","'use strict';\nvar global = require('./_global');\nvar has = require('./_has');\nvar cof = require('./_cof');\nvar inheritIfRequired = require('./_inherit-if-required');\nvar toPrimitive = require('./_to-primitive');\nvar fails = require('./_fails');\nvar gOPN = require('./_object-gopn').f;\nvar gOPD = require('./_object-gopd').f;\nvar dP = require('./_object-dp').f;\nvar $trim = require('./_string-trim').trim;\nvar NUMBER = 'Number';\nvar $Number = global[NUMBER];\nvar Base = $Number;\nvar proto = $Number.prototype;\n// Opera ~12 has broken Object#toString\nvar BROKEN_COF = cof(require('./_object-create')(proto)) == NUMBER;\nvar TRIM = 'trim' in String.prototype;\n\n// 7.1.3 ToNumber(argument)\nvar toNumber = function (argument) {\n var it = toPrimitive(argument, false);\n if (typeof it == 'string' && it.length > 2) {\n it = TRIM ? it.trim() : $trim(it, 3);\n var first = it.charCodeAt(0);\n var third, radix, maxCode;\n if (first === 43 || first === 45) {\n third = it.charCodeAt(2);\n if (third === 88 || third === 120) return NaN; // Number('+0x1') should be NaN, old V8 fix\n } else if (first === 48) {\n switch (it.charCodeAt(1)) {\n case 66: case 98: radix = 2; maxCode = 49; break; // fast equal /^0b[01]+$/i\n case 79: case 111: radix = 8; maxCode = 55; break; // fast equal /^0o[0-7]+$/i\n default: return +it;\n }\n for (var digits = it.slice(2), i = 0, l = digits.length, code; i < l; i++) {\n code = digits.charCodeAt(i);\n // parseInt parses a string to a first unavailable symbol\n // but ToNumber should return NaN if a string contains unavailable symbols\n if (code < 48 || code > maxCode) return NaN;\n } return parseInt(digits, radix);\n }\n } return +it;\n};\n\nif (!$Number(' 0o1') || !$Number('0b1') || $Number('+0x1')) {\n $Number = function Number(value) {\n var it = arguments.length < 1 ? 0 : value;\n var that = this;\n return that instanceof $Number\n // check on 1..constructor(foo) case\n && (BROKEN_COF ? fails(function () { proto.valueOf.call(that); }) : cof(that) != NUMBER)\n ? inheritIfRequired(new Base(toNumber(it)), that, $Number) : toNumber(it);\n };\n for (var keys = require('./_descriptors') ? gOPN(Base) : (\n // ES3:\n 'MAX_VALUE,MIN_VALUE,NaN,NEGATIVE_INFINITY,POSITIVE_INFINITY,' +\n // ES6 (in case, if modules with ES6 Number statics required before):\n 'EPSILON,isFinite,isInteger,isNaN,isSafeInteger,MAX_SAFE_INTEGER,' +\n 'MIN_SAFE_INTEGER,parseFloat,parseInt,isInteger'\n ).split(','), j = 0, key; keys.length > j; j++) {\n if (has(Base, key = keys[j]) && !has($Number, key)) {\n dP($Number, key, gOPD(Base, key));\n }\n }\n $Number.prototype = proto;\n proto.constructor = $Number;\n require('./_redefine')(global, NUMBER, $Number);\n}\n","'use strict';\nvar $export = require('./_export');\nvar toInteger = require('./_to-integer');\nvar aNumberValue = require('./_a-number-value');\nvar repeat = require('./_string-repeat');\nvar $toFixed = 1.0.toFixed;\nvar floor = Math.floor;\nvar data = [0, 0, 0, 0, 0, 0];\nvar ERROR = 'Number.toFixed: incorrect invocation!';\nvar ZERO = '0';\n\nvar multiply = function (n, c) {\n var i = -1;\n var c2 = c;\n while (++i < 6) {\n c2 += n * data[i];\n data[i] = c2 % 1e7;\n c2 = floor(c2 / 1e7);\n }\n};\nvar divide = function (n) {\n var i = 6;\n var c = 0;\n while (--i >= 0) {\n c += data[i];\n data[i] = floor(c / n);\n c = (c % n) * 1e7;\n }\n};\nvar numToString = function () {\n var i = 6;\n var s = '';\n while (--i >= 0) {\n if (s !== '' || i === 0 || data[i] !== 0) {\n var t = String(data[i]);\n s = s === '' ? t : s + repeat.call(ZERO, 7 - t.length) + t;\n }\n } return s;\n};\nvar pow = function (x, n, acc) {\n return n === 0 ? acc : n % 2 === 1 ? pow(x, n - 1, acc * x) : pow(x * x, n / 2, acc);\n};\nvar log = function (x) {\n var n = 0;\n var x2 = x;\n while (x2 >= 4096) {\n n += 12;\n x2 /= 4096;\n }\n while (x2 >= 2) {\n n += 1;\n x2 /= 2;\n } return n;\n};\n\n$export($export.P + $export.F * (!!$toFixed && (\n 0.00008.toFixed(3) !== '0.000' ||\n 0.9.toFixed(0) !== '1' ||\n 1.255.toFixed(2) !== '1.25' ||\n 1000000000000000128.0.toFixed(0) !== '1000000000000000128'\n) || !require('./_fails')(function () {\n // V8 ~ Android 4.3-\n $toFixed.call({});\n})), 'Number', {\n toFixed: function toFixed(fractionDigits) {\n var x = aNumberValue(this, ERROR);\n var f = toInteger(fractionDigits);\n var s = '';\n var m = ZERO;\n var e, z, j, k;\n if (f < 0 || f > 20) throw RangeError(ERROR);\n // eslint-disable-next-line no-self-compare\n if (x != x) return 'NaN';\n if (x <= -1e21 || x >= 1e21) return String(x);\n if (x < 0) {\n s = '-';\n x = -x;\n }\n if (x > 1e-21) {\n e = log(x * pow(2, 69, 1)) - 69;\n z = e < 0 ? x * pow(2, -e, 1) : x / pow(2, e, 1);\n z *= 0x10000000000000;\n e = 52 - e;\n if (e > 0) {\n multiply(0, z);\n j = f;\n while (j >= 7) {\n multiply(1e7, 0);\n j -= 7;\n }\n multiply(pow(10, j, 1), 0);\n j = e - 1;\n while (j >= 23) {\n divide(1 << 23);\n j -= 23;\n }\n divide(1 << j);\n multiply(1, 1);\n divide(2);\n m = numToString();\n } else {\n multiply(0, z);\n multiply(1 << -e, 0);\n m = numToString() + repeat.call(ZERO, f);\n }\n }\n if (f > 0) {\n k = m.length;\n m = s + (k <= f ? '0.' + repeat.call(ZERO, f - k) + m : m.slice(0, k - f) + '.' + m.slice(k - f));\n } else {\n m = s + m;\n } return m;\n }\n});\n","'use strict';\nvar $export = require('./_export');\nvar $fails = require('./_fails');\nvar aNumberValue = require('./_a-number-value');\nvar $toPrecision = 1.0.toPrecision;\n\n$export($export.P + $export.F * ($fails(function () {\n // IE7-\n return $toPrecision.call(1, undefined) !== '1';\n}) || !$fails(function () {\n // V8 ~ Android 4.3-\n $toPrecision.call({});\n})), 'Number', {\n toPrecision: function toPrecision(precision) {\n var that = aNumberValue(this, 'Number#toPrecision: incorrect invocation!');\n return precision === undefined ? $toPrecision.call(that) : $toPrecision.call(that, precision);\n }\n});\n","// 20.1.2.1 Number.EPSILON\nvar $export = require('./_export');\n\n$export($export.S, 'Number', { EPSILON: Math.pow(2, -52) });\n","// 20.1.2.2 Number.isFinite(number)\nvar $export = require('./_export');\nvar _isFinite = require('./_global').isFinite;\n\n$export($export.S, 'Number', {\n isFinite: function isFinite(it) {\n return typeof it == 'number' && _isFinite(it);\n }\n});\n","// 20.1.2.3 Number.isInteger(number)\nvar $export = require('./_export');\n\n$export($export.S, 'Number', { isInteger: require('./_is-integer') });\n","// 20.1.2.4 Number.isNaN(number)\nvar $export = require('./_export');\n\n$export($export.S, 'Number', {\n isNaN: function isNaN(number) {\n // eslint-disable-next-line no-self-compare\n return number != number;\n }\n});\n","// 20.1.2.5 Number.isSafeInteger(number)\nvar $export = require('./_export');\nvar isInteger = require('./_is-integer');\nvar abs = Math.abs;\n\n$export($export.S, 'Number', {\n isSafeInteger: function isSafeInteger(number) {\n return isInteger(number) && abs(number) <= 0x1fffffffffffff;\n }\n});\n","// 20.1.2.6 Number.MAX_SAFE_INTEGER\nvar $export = require('./_export');\n\n$export($export.S, 'Number', { MAX_SAFE_INTEGER: 0x1fffffffffffff });\n","// 20.1.2.10 Number.MIN_SAFE_INTEGER\nvar $export = require('./_export');\n\n$export($export.S, 'Number', { MIN_SAFE_INTEGER: -0x1fffffffffffff });\n","var $export = require('./_export');\nvar $parseFloat = require('./_parse-float');\n// 20.1.2.12 Number.parseFloat(string)\n$export($export.S + $export.F * (Number.parseFloat != $parseFloat), 'Number', { parseFloat: $parseFloat });\n","var $export = require('./_export');\nvar $parseInt = require('./_parse-int');\n// 20.1.2.13 Number.parseInt(string, radix)\n$export($export.S + $export.F * (Number.parseInt != $parseInt), 'Number', { parseInt: $parseInt });\n","// 20.2.2.3 Math.acosh(x)\nvar $export = require('./_export');\nvar log1p = require('./_math-log1p');\nvar sqrt = Math.sqrt;\nvar $acosh = Math.acosh;\n\n$export($export.S + $export.F * !($acosh\n // V8 bug: https://code.google.com/p/v8/issues/detail?id=3509\n && Math.floor($acosh(Number.MAX_VALUE)) == 710\n // Tor Browser bug: Math.acosh(Infinity) -> NaN\n && $acosh(Infinity) == Infinity\n), 'Math', {\n acosh: function acosh(x) {\n return (x = +x) < 1 ? NaN : x > 94906265.62425156\n ? Math.log(x) + Math.LN2\n : log1p(x - 1 + sqrt(x - 1) * sqrt(x + 1));\n }\n});\n","// 20.2.2.5 Math.asinh(x)\nvar $export = require('./_export');\nvar $asinh = Math.asinh;\n\nfunction asinh(x) {\n return !isFinite(x = +x) || x == 0 ? x : x < 0 ? -asinh(-x) : Math.log(x + Math.sqrt(x * x + 1));\n}\n\n// Tor Browser bug: Math.asinh(0) -> -0\n$export($export.S + $export.F * !($asinh && 1 / $asinh(0) > 0), 'Math', { asinh: asinh });\n","// 20.2.2.7 Math.atanh(x)\nvar $export = require('./_export');\nvar $atanh = Math.atanh;\n\n// Tor Browser bug: Math.atanh(-0) -> 0\n$export($export.S + $export.F * !($atanh && 1 / $atanh(-0) < 0), 'Math', {\n atanh: function atanh(x) {\n return (x = +x) == 0 ? x : Math.log((1 + x) / (1 - x)) / 2;\n }\n});\n","// 20.2.2.9 Math.cbrt(x)\nvar $export = require('./_export');\nvar sign = require('./_math-sign');\n\n$export($export.S, 'Math', {\n cbrt: function cbrt(x) {\n return sign(x = +x) * Math.pow(Math.abs(x), 1 / 3);\n }\n});\n","// 20.2.2.11 Math.clz32(x)\nvar $export = require('./_export');\n\n$export($export.S, 'Math', {\n clz32: function clz32(x) {\n return (x >>>= 0) ? 31 - Math.floor(Math.log(x + 0.5) * Math.LOG2E) : 32;\n }\n});\n","// 20.2.2.12 Math.cosh(x)\nvar $export = require('./_export');\nvar exp = Math.exp;\n\n$export($export.S, 'Math', {\n cosh: function cosh(x) {\n return (exp(x = +x) + exp(-x)) / 2;\n }\n});\n","// 20.2.2.14 Math.expm1(x)\nvar $export = require('./_export');\nvar $expm1 = require('./_math-expm1');\n\n$export($export.S + $export.F * ($expm1 != Math.expm1), 'Math', { expm1: $expm1 });\n","// 20.2.2.16 Math.fround(x)\nvar $export = require('./_export');\n\n$export($export.S, 'Math', { fround: require('./_math-fround') });\n","// 20.2.2.16 Math.fround(x)\nvar sign = require('./_math-sign');\nvar pow = Math.pow;\nvar EPSILON = pow(2, -52);\nvar EPSILON32 = pow(2, -23);\nvar MAX32 = pow(2, 127) * (2 - EPSILON32);\nvar MIN32 = pow(2, -126);\n\nvar roundTiesToEven = function (n) {\n return n + 1 / EPSILON - 1 / EPSILON;\n};\n\nmodule.exports = Math.fround || function fround(x) {\n var $abs = Math.abs(x);\n var $sign = sign(x);\n var a, result;\n if ($abs < MIN32) return $sign * roundTiesToEven($abs / MIN32 / EPSILON32) * MIN32 * EPSILON32;\n a = (1 + EPSILON32 / EPSILON) * $abs;\n result = a - (a - $abs);\n // eslint-disable-next-line no-self-compare\n if (result > MAX32 || result != result) return $sign * Infinity;\n return $sign * result;\n};\n","// 20.2.2.17 Math.hypot([value1[, value2[, … ]]])\nvar $export = require('./_export');\nvar abs = Math.abs;\n\n$export($export.S, 'Math', {\n hypot: function hypot(value1, value2) { // eslint-disable-line no-unused-vars\n var sum = 0;\n var i = 0;\n var aLen = arguments.length;\n var larg = 0;\n var arg, div;\n while (i < aLen) {\n arg = abs(arguments[i++]);\n if (larg < arg) {\n div = larg / arg;\n sum = sum * div * div + 1;\n larg = arg;\n } else if (arg > 0) {\n div = arg / larg;\n sum += div * div;\n } else sum += arg;\n }\n return larg === Infinity ? Infinity : larg * Math.sqrt(sum);\n }\n});\n","// 20.2.2.18 Math.imul(x, y)\nvar $export = require('./_export');\nvar $imul = Math.imul;\n\n// some WebKit versions fails with big numbers, some has wrong arity\n$export($export.S + $export.F * require('./_fails')(function () {\n return $imul(0xffffffff, 5) != -5 || $imul.length != 2;\n}), 'Math', {\n imul: function imul(x, y) {\n var UINT16 = 0xffff;\n var xn = +x;\n var yn = +y;\n var xl = UINT16 & xn;\n var yl = UINT16 & yn;\n return 0 | xl * yl + ((UINT16 & xn >>> 16) * yl + xl * (UINT16 & yn >>> 16) << 16 >>> 0);\n }\n});\n","// 20.2.2.21 Math.log10(x)\nvar $export = require('./_export');\n\n$export($export.S, 'Math', {\n log10: function log10(x) {\n return Math.log(x) * Math.LOG10E;\n }\n});\n","// 20.2.2.20 Math.log1p(x)\nvar $export = require('./_export');\n\n$export($export.S, 'Math', { log1p: require('./_math-log1p') });\n","// 20.2.2.22 Math.log2(x)\nvar $export = require('./_export');\n\n$export($export.S, 'Math', {\n log2: function log2(x) {\n return Math.log(x) / Math.LN2;\n }\n});\n","// 20.2.2.28 Math.sign(x)\nvar $export = require('./_export');\n\n$export($export.S, 'Math', { sign: require('./_math-sign') });\n","// 20.2.2.30 Math.sinh(x)\nvar $export = require('./_export');\nvar expm1 = require('./_math-expm1');\nvar exp = Math.exp;\n\n// V8 near Chromium 38 has a problem with very small numbers\n$export($export.S + $export.F * require('./_fails')(function () {\n return !Math.sinh(-2e-17) != -2e-17;\n}), 'Math', {\n sinh: function sinh(x) {\n return Math.abs(x = +x) < 1\n ? (expm1(x) - expm1(-x)) / 2\n : (exp(x - 1) - exp(-x - 1)) * (Math.E / 2);\n }\n});\n","// 20.2.2.33 Math.tanh(x)\nvar $export = require('./_export');\nvar expm1 = require('./_math-expm1');\nvar exp = Math.exp;\n\n$export($export.S, 'Math', {\n tanh: function tanh(x) {\n var a = expm1(x = +x);\n var b = expm1(-x);\n return a == Infinity ? 1 : b == Infinity ? -1 : (a - b) / (exp(x) + exp(-x));\n }\n});\n","// 20.2.2.34 Math.trunc(x)\nvar $export = require('./_export');\n\n$export($export.S, 'Math', {\n trunc: function trunc(it) {\n return (it > 0 ? Math.floor : Math.ceil)(it);\n }\n});\n","var $export = require('./_export');\nvar toAbsoluteIndex = require('./_to-absolute-index');\nvar fromCharCode = String.fromCharCode;\nvar $fromCodePoint = String.fromCodePoint;\n\n// length should be 1, old FF problem\n$export($export.S + $export.F * (!!$fromCodePoint && $fromCodePoint.length != 1), 'String', {\n // 21.1.2.2 String.fromCodePoint(...codePoints)\n fromCodePoint: function fromCodePoint(x) { // eslint-disable-line no-unused-vars\n var res = [];\n var aLen = arguments.length;\n var i = 0;\n var code;\n while (aLen > i) {\n code = +arguments[i++];\n if (toAbsoluteIndex(code, 0x10ffff) !== code) throw RangeError(code + ' is not a valid code point');\n res.push(code < 0x10000\n ? fromCharCode(code)\n : fromCharCode(((code -= 0x10000) >> 10) + 0xd800, code % 0x400 + 0xdc00)\n );\n } return res.join('');\n }\n});\n","var $export = require('./_export');\nvar toIObject = require('./_to-iobject');\nvar toLength = require('./_to-length');\n\n$export($export.S, 'String', {\n // 21.1.2.4 String.raw(callSite, ...substitutions)\n raw: function raw(callSite) {\n var tpl = toIObject(callSite.raw);\n var len = toLength(tpl.length);\n var aLen = arguments.length;\n var res = [];\n var i = 0;\n while (len > i) {\n res.push(String(tpl[i++]));\n if (i < aLen) res.push(String(arguments[i]));\n } return res.join('');\n }\n});\n","'use strict';\n// 21.1.3.25 String.prototype.trim()\nrequire('./_string-trim')('trim', function ($trim) {\n return function trim() {\n return $trim(this, 3);\n };\n});\n","'use strict';\nvar $at = require('./_string-at')(true);\n\n// 21.1.3.27 String.prototype[@@iterator]()\nrequire('./_iter-define')(String, 'String', function (iterated) {\n this._t = String(iterated); // target\n this._i = 0; // next index\n// 21.1.5.2.1 %StringIteratorPrototype%.next()\n}, function () {\n var O = this._t;\n var index = this._i;\n var point;\n if (index >= O.length) return { value: undefined, done: true };\n point = $at(O, index);\n this._i += point.length;\n return { value: point, done: false };\n});\n","'use strict';\nvar $export = require('./_export');\nvar $at = require('./_string-at')(false);\n$export($export.P, 'String', {\n // 21.1.3.3 String.prototype.codePointAt(pos)\n codePointAt: function codePointAt(pos) {\n return $at(this, pos);\n }\n});\n","// 21.1.3.6 String.prototype.endsWith(searchString [, endPosition])\n'use strict';\nvar $export = require('./_export');\nvar toLength = require('./_to-length');\nvar context = require('./_string-context');\nvar ENDS_WITH = 'endsWith';\nvar $endsWith = ''[ENDS_WITH];\n\n$export($export.P + $export.F * require('./_fails-is-regexp')(ENDS_WITH), 'String', {\n endsWith: function endsWith(searchString /* , endPosition = @length */) {\n var that = context(this, searchString, ENDS_WITH);\n var endPosition = arguments.length > 1 ? arguments[1] : undefined;\n var len = toLength(that.length);\n var end = endPosition === undefined ? len : Math.min(toLength(endPosition), len);\n var search = String(searchString);\n return $endsWith\n ? $endsWith.call(that, search, end)\n : that.slice(end - search.length, end) === search;\n }\n});\n","// 21.1.3.7 String.prototype.includes(searchString, position = 0)\n'use strict';\nvar $export = require('./_export');\nvar context = require('./_string-context');\nvar INCLUDES = 'includes';\n\n$export($export.P + $export.F * require('./_fails-is-regexp')(INCLUDES), 'String', {\n includes: function includes(searchString /* , position = 0 */) {\n return !!~context(this, searchString, INCLUDES)\n .indexOf(searchString, arguments.length > 1 ? arguments[1] : undefined);\n }\n});\n","var $export = require('./_export');\n\n$export($export.P, 'String', {\n // 21.1.3.13 String.prototype.repeat(count)\n repeat: require('./_string-repeat')\n});\n","// 21.1.3.18 String.prototype.startsWith(searchString [, position ])\n'use strict';\nvar $export = require('./_export');\nvar toLength = require('./_to-length');\nvar context = require('./_string-context');\nvar STARTS_WITH = 'startsWith';\nvar $startsWith = ''[STARTS_WITH];\n\n$export($export.P + $export.F * require('./_fails-is-regexp')(STARTS_WITH), 'String', {\n startsWith: function startsWith(searchString /* , position = 0 */) {\n var that = context(this, searchString, STARTS_WITH);\n var index = toLength(Math.min(arguments.length > 1 ? arguments[1] : undefined, that.length));\n var search = String(searchString);\n return $startsWith\n ? $startsWith.call(that, search, index)\n : that.slice(index, index + search.length) === search;\n }\n});\n","'use strict';\n// B.2.3.2 String.prototype.anchor(name)\nrequire('./_string-html')('anchor', function (createHTML) {\n return function anchor(name) {\n return createHTML(this, 'a', 'name', name);\n };\n});\n","'use strict';\n// B.2.3.3 String.prototype.big()\nrequire('./_string-html')('big', function (createHTML) {\n return function big() {\n return createHTML(this, 'big', '', '');\n };\n});\n","'use strict';\n// B.2.3.4 String.prototype.blink()\nrequire('./_string-html')('blink', function (createHTML) {\n return function blink() {\n return createHTML(this, 'blink', '', '');\n };\n});\n","'use strict';\n// B.2.3.5 String.prototype.bold()\nrequire('./_string-html')('bold', function (createHTML) {\n return function bold() {\n return createHTML(this, 'b', '', '');\n };\n});\n","'use strict';\n// B.2.3.6 String.prototype.fixed()\nrequire('./_string-html')('fixed', function (createHTML) {\n return function fixed() {\n return createHTML(this, 'tt', '', '');\n };\n});\n","'use strict';\n// B.2.3.7 String.prototype.fontcolor(color)\nrequire('./_string-html')('fontcolor', function (createHTML) {\n return function fontcolor(color) {\n return createHTML(this, 'font', 'color', color);\n };\n});\n","'use strict';\n// B.2.3.8 String.prototype.fontsize(size)\nrequire('./_string-html')('fontsize', function (createHTML) {\n return function fontsize(size) {\n return createHTML(this, 'font', 'size', size);\n };\n});\n","'use strict';\n// B.2.3.9 String.prototype.italics()\nrequire('./_string-html')('italics', function (createHTML) {\n return function italics() {\n return createHTML(this, 'i', '', '');\n };\n});\n","'use strict';\n// B.2.3.10 String.prototype.link(url)\nrequire('./_string-html')('link', function (createHTML) {\n return function link(url) {\n return createHTML(this, 'a', 'href', url);\n };\n});\n","'use strict';\n// B.2.3.11 String.prototype.small()\nrequire('./_string-html')('small', function (createHTML) {\n return function small() {\n return createHTML(this, 'small', '', '');\n };\n});\n","'use strict';\n// B.2.3.12 String.prototype.strike()\nrequire('./_string-html')('strike', function (createHTML) {\n return function strike() {\n return createHTML(this, 'strike', '', '');\n };\n});\n","'use strict';\n// B.2.3.13 String.prototype.sub()\nrequire('./_string-html')('sub', function (createHTML) {\n return function sub() {\n return createHTML(this, 'sub', '', '');\n };\n});\n","'use strict';\n// B.2.3.14 String.prototype.sup()\nrequire('./_string-html')('sup', function (createHTML) {\n return function sup() {\n return createHTML(this, 'sup', '', '');\n };\n});\n","// 20.3.3.1 / 15.9.4.4 Date.now()\nvar $export = require('./_export');\n\n$export($export.S, 'Date', { now: function () { return new Date().getTime(); } });\n","'use strict';\nvar $export = require('./_export');\nvar toObject = require('./_to-object');\nvar toPrimitive = require('./_to-primitive');\n\n$export($export.P + $export.F * require('./_fails')(function () {\n return new Date(NaN).toJSON() !== null\n || Date.prototype.toJSON.call({ toISOString: function () { return 1; } }) !== 1;\n}), 'Date', {\n // eslint-disable-next-line no-unused-vars\n toJSON: function toJSON(key) {\n var O = toObject(this);\n var pv = toPrimitive(O);\n return typeof pv == 'number' && !isFinite(pv) ? null : O.toISOString();\n }\n});\n","// 20.3.4.36 / 15.9.5.43 Date.prototype.toISOString()\nvar $export = require('./_export');\nvar toISOString = require('./_date-to-iso-string');\n\n// PhantomJS / old WebKit has a broken implementations\n$export($export.P + $export.F * (Date.prototype.toISOString !== toISOString), 'Date', {\n toISOString: toISOString\n});\n","'use strict';\n// 20.3.4.36 / 15.9.5.43 Date.prototype.toISOString()\nvar fails = require('./_fails');\nvar getTime = Date.prototype.getTime;\nvar $toISOString = Date.prototype.toISOString;\n\nvar lz = function (num) {\n return num > 9 ? num : '0' + num;\n};\n\n// PhantomJS / old WebKit has a broken implementations\nmodule.exports = (fails(function () {\n return $toISOString.call(new Date(-5e13 - 1)) != '0385-07-25T07:06:39.999Z';\n}) || !fails(function () {\n $toISOString.call(new Date(NaN));\n})) ? function toISOString() {\n if (!isFinite(getTime.call(this))) throw RangeError('Invalid time value');\n var d = this;\n var y = d.getUTCFullYear();\n var m = d.getUTCMilliseconds();\n var s = y < 0 ? '-' : y > 9999 ? '+' : '';\n return s + ('00000' + Math.abs(y)).slice(s ? -6 : -4) +\n '-' + lz(d.getUTCMonth() + 1) + '-' + lz(d.getUTCDate()) +\n 'T' + lz(d.getUTCHours()) + ':' + lz(d.getUTCMinutes()) +\n ':' + lz(d.getUTCSeconds()) + '.' + (m > 99 ? m : '0' + lz(m)) + 'Z';\n} : $toISOString;\n","var DateProto = Date.prototype;\nvar INVALID_DATE = 'Invalid Date';\nvar TO_STRING = 'toString';\nvar $toString = DateProto[TO_STRING];\nvar getTime = DateProto.getTime;\nif (new Date(NaN) + '' != INVALID_DATE) {\n require('./_redefine')(DateProto, TO_STRING, function toString() {\n var value = getTime.call(this);\n // eslint-disable-next-line no-self-compare\n return value === value ? $toString.call(this) : INVALID_DATE;\n });\n}\n","var TO_PRIMITIVE = require('./_wks')('toPrimitive');\nvar proto = Date.prototype;\n\nif (!(TO_PRIMITIVE in proto)) require('./_hide')(proto, TO_PRIMITIVE, require('./_date-to-primitive'));\n","'use strict';\nvar anObject = require('./_an-object');\nvar toPrimitive = require('./_to-primitive');\nvar NUMBER = 'number';\n\nmodule.exports = function (hint) {\n if (hint !== 'string' && hint !== NUMBER && hint !== 'default') throw TypeError('Incorrect hint');\n return toPrimitive(anObject(this), hint != NUMBER);\n};\n","// 22.1.2.2 / 15.4.3.2 Array.isArray(arg)\nvar $export = require('./_export');\n\n$export($export.S, 'Array', { isArray: require('./_is-array') });\n","'use strict';\nvar ctx = require('./_ctx');\nvar $export = require('./_export');\nvar toObject = require('./_to-object');\nvar call = require('./_iter-call');\nvar isArrayIter = require('./_is-array-iter');\nvar toLength = require('./_to-length');\nvar createProperty = require('./_create-property');\nvar getIterFn = require('./core.get-iterator-method');\n\n$export($export.S + $export.F * !require('./_iter-detect')(function (iter) { Array.from(iter); }), 'Array', {\n // 22.1.2.1 Array.from(arrayLike, mapfn = undefined, thisArg = undefined)\n from: function from(arrayLike /* , mapfn = undefined, thisArg = undefined */) {\n var O = toObject(arrayLike);\n var C = typeof this == 'function' ? this : Array;\n var aLen = arguments.length;\n var mapfn = aLen > 1 ? arguments[1] : undefined;\n var mapping = mapfn !== undefined;\n var index = 0;\n var iterFn = getIterFn(O);\n var length, result, step, iterator;\n if (mapping) mapfn = ctx(mapfn, aLen > 2 ? arguments[2] : undefined, 2);\n // if object isn't iterable or it's array with default iterator - use simple case\n if (iterFn != undefined && !(C == Array && isArrayIter(iterFn))) {\n for (iterator = iterFn.call(O), result = new C(); !(step = iterator.next()).done; index++) {\n createProperty(result, index, mapping ? call(iterator, mapfn, [step.value, index], true) : step.value);\n }\n } else {\n length = toLength(O.length);\n for (result = new C(length); length > index; index++) {\n createProperty(result, index, mapping ? mapfn(O[index], index) : O[index]);\n }\n }\n result.length = index;\n return result;\n }\n});\n","'use strict';\nvar $export = require('./_export');\nvar createProperty = require('./_create-property');\n\n// WebKit Array.of isn't generic\n$export($export.S + $export.F * require('./_fails')(function () {\n function F() { /* empty */ }\n return !(Array.of.call(F) instanceof F);\n}), 'Array', {\n // 22.1.2.3 Array.of( ...items)\n of: function of(/* ...args */) {\n var index = 0;\n var aLen = arguments.length;\n var result = new (typeof this == 'function' ? this : Array)(aLen);\n while (aLen > index) createProperty(result, index, arguments[index++]);\n result.length = aLen;\n return result;\n }\n});\n","'use strict';\n// 22.1.3.13 Array.prototype.join(separator)\nvar $export = require('./_export');\nvar toIObject = require('./_to-iobject');\nvar arrayJoin = [].join;\n\n// fallback for not array-like strings\n$export($export.P + $export.F * (require('./_iobject') != Object || !require('./_strict-method')(arrayJoin)), 'Array', {\n join: function join(separator) {\n return arrayJoin.call(toIObject(this), separator === undefined ? ',' : separator);\n }\n});\n","'use strict';\nvar $export = require('./_export');\nvar html = require('./_html');\nvar cof = require('./_cof');\nvar toAbsoluteIndex = require('./_to-absolute-index');\nvar toLength = require('./_to-length');\nvar arraySlice = [].slice;\n\n// fallback for not array-like ES3 strings and DOM objects\n$export($export.P + $export.F * require('./_fails')(function () {\n if (html) arraySlice.call(html);\n}), 'Array', {\n slice: function slice(begin, end) {\n var len = toLength(this.length);\n var klass = cof(this);\n end = end === undefined ? len : end;\n if (klass == 'Array') return arraySlice.call(this, begin, end);\n var start = toAbsoluteIndex(begin, len);\n var upTo = toAbsoluteIndex(end, len);\n var size = toLength(upTo - start);\n var cloned = new Array(size);\n var i = 0;\n for (; i < size; i++) cloned[i] = klass == 'String'\n ? this.charAt(start + i)\n : this[start + i];\n return cloned;\n }\n});\n","'use strict';\nvar $export = require('./_export');\nvar aFunction = require('./_a-function');\nvar toObject = require('./_to-object');\nvar fails = require('./_fails');\nvar $sort = [].sort;\nvar test = [1, 2, 3];\n\n$export($export.P + $export.F * (fails(function () {\n // IE8-\n test.sort(undefined);\n}) || !fails(function () {\n // V8 bug\n test.sort(null);\n // Old WebKit\n}) || !require('./_strict-method')($sort)), 'Array', {\n // 22.1.3.25 Array.prototype.sort(comparefn)\n sort: function sort(comparefn) {\n return comparefn === undefined\n ? $sort.call(toObject(this))\n : $sort.call(toObject(this), aFunction(comparefn));\n }\n});\n","'use strict';\nvar $export = require('./_export');\nvar $forEach = require('./_array-methods')(0);\nvar STRICT = require('./_strict-method')([].forEach, true);\n\n$export($export.P + $export.F * !STRICT, 'Array', {\n // 22.1.3.10 / 15.4.4.18 Array.prototype.forEach(callbackfn [, thisArg])\n forEach: function forEach(callbackfn /* , thisArg */) {\n return $forEach(this, callbackfn, arguments[1]);\n }\n});\n","var isObject = require('./_is-object');\nvar isArray = require('./_is-array');\nvar SPECIES = require('./_wks')('species');\n\nmodule.exports = function (original) {\n var C;\n if (isArray(original)) {\n C = original.constructor;\n // cross-realm fallback\n if (typeof C == 'function' && (C === Array || isArray(C.prototype))) C = undefined;\n if (isObject(C)) {\n C = C[SPECIES];\n if (C === null) C = undefined;\n }\n } return C === undefined ? Array : C;\n};\n","'use strict';\nvar $export = require('./_export');\nvar $map = require('./_array-methods')(1);\n\n$export($export.P + $export.F * !require('./_strict-method')([].map, true), 'Array', {\n // 22.1.3.15 / 15.4.4.19 Array.prototype.map(callbackfn [, thisArg])\n map: function map(callbackfn /* , thisArg */) {\n return $map(this, callbackfn, arguments[1]);\n }\n});\n","'use strict';\nvar $export = require('./_export');\nvar $filter = require('./_array-methods')(2);\n\n$export($export.P + $export.F * !require('./_strict-method')([].filter, true), 'Array', {\n // 22.1.3.7 / 15.4.4.20 Array.prototype.filter(callbackfn [, thisArg])\n filter: function filter(callbackfn /* , thisArg */) {\n return $filter(this, callbackfn, arguments[1]);\n }\n});\n","'use strict';\nvar $export = require('./_export');\nvar $some = require('./_array-methods')(3);\n\n$export($export.P + $export.F * !require('./_strict-method')([].some, true), 'Array', {\n // 22.1.3.23 / 15.4.4.17 Array.prototype.some(callbackfn [, thisArg])\n some: function some(callbackfn /* , thisArg */) {\n return $some(this, callbackfn, arguments[1]);\n }\n});\n","'use strict';\nvar $export = require('./_export');\nvar $every = require('./_array-methods')(4);\n\n$export($export.P + $export.F * !require('./_strict-method')([].every, true), 'Array', {\n // 22.1.3.5 / 15.4.4.16 Array.prototype.every(callbackfn [, thisArg])\n every: function every(callbackfn /* , thisArg */) {\n return $every(this, callbackfn, arguments[1]);\n }\n});\n","'use strict';\nvar $export = require('./_export');\nvar $reduce = require('./_array-reduce');\n\n$export($export.P + $export.F * !require('./_strict-method')([].reduce, true), 'Array', {\n // 22.1.3.18 / 15.4.4.21 Array.prototype.reduce(callbackfn [, initialValue])\n reduce: function reduce(callbackfn /* , initialValue */) {\n return $reduce(this, callbackfn, arguments.length, arguments[1], false);\n }\n});\n","'use strict';\nvar $export = require('./_export');\nvar $reduce = require('./_array-reduce');\n\n$export($export.P + $export.F * !require('./_strict-method')([].reduceRight, true), 'Array', {\n // 22.1.3.19 / 15.4.4.22 Array.prototype.reduceRight(callbackfn [, initialValue])\n reduceRight: function reduceRight(callbackfn /* , initialValue */) {\n return $reduce(this, callbackfn, arguments.length, arguments[1], true);\n }\n});\n","'use strict';\nvar $export = require('./_export');\nvar $indexOf = require('./_array-includes')(false);\nvar $native = [].indexOf;\nvar NEGATIVE_ZERO = !!$native && 1 / [1].indexOf(1, -0) < 0;\n\n$export($export.P + $export.F * (NEGATIVE_ZERO || !require('./_strict-method')($native)), 'Array', {\n // 22.1.3.11 / 15.4.4.14 Array.prototype.indexOf(searchElement [, fromIndex])\n indexOf: function indexOf(searchElement /* , fromIndex = 0 */) {\n return NEGATIVE_ZERO\n // convert -0 to +0\n ? $native.apply(this, arguments) || 0\n : $indexOf(this, searchElement, arguments[1]);\n }\n});\n","'use strict';\nvar $export = require('./_export');\nvar toIObject = require('./_to-iobject');\nvar toInteger = require('./_to-integer');\nvar toLength = require('./_to-length');\nvar $native = [].lastIndexOf;\nvar NEGATIVE_ZERO = !!$native && 1 / [1].lastIndexOf(1, -0) < 0;\n\n$export($export.P + $export.F * (NEGATIVE_ZERO || !require('./_strict-method')($native)), 'Array', {\n // 22.1.3.14 / 15.4.4.15 Array.prototype.lastIndexOf(searchElement [, fromIndex])\n lastIndexOf: function lastIndexOf(searchElement /* , fromIndex = @[*-1] */) {\n // convert -0 to +0\n if (NEGATIVE_ZERO) return $native.apply(this, arguments) || 0;\n var O = toIObject(this);\n var length = toLength(O.length);\n var index = length - 1;\n if (arguments.length > 1) index = Math.min(index, toInteger(arguments[1]));\n if (index < 0) index = length + index;\n for (;index >= 0; index--) if (index in O) if (O[index] === searchElement) return index || 0;\n return -1;\n }\n});\n","// 22.1.3.3 Array.prototype.copyWithin(target, start, end = this.length)\nvar $export = require('./_export');\n\n$export($export.P, 'Array', { copyWithin: require('./_array-copy-within') });\n\nrequire('./_add-to-unscopables')('copyWithin');\n","// 22.1.3.6 Array.prototype.fill(value, start = 0, end = this.length)\nvar $export = require('./_export');\n\n$export($export.P, 'Array', { fill: require('./_array-fill') });\n\nrequire('./_add-to-unscopables')('fill');\n","'use strict';\n// 22.1.3.8 Array.prototype.find(predicate, thisArg = undefined)\nvar $export = require('./_export');\nvar $find = require('./_array-methods')(5);\nvar KEY = 'find';\nvar forced = true;\n// Shouldn't skip holes\nif (KEY in []) Array(1)[KEY](function () { forced = false; });\n$export($export.P + $export.F * forced, 'Array', {\n find: function find(callbackfn /* , that = undefined */) {\n return $find(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n }\n});\nrequire('./_add-to-unscopables')(KEY);\n","'use strict';\n// 22.1.3.9 Array.prototype.findIndex(predicate, thisArg = undefined)\nvar $export = require('./_export');\nvar $find = require('./_array-methods')(6);\nvar KEY = 'findIndex';\nvar forced = true;\n// Shouldn't skip holes\nif (KEY in []) Array(1)[KEY](function () { forced = false; });\n$export($export.P + $export.F * forced, 'Array', {\n findIndex: function findIndex(callbackfn /* , that = undefined */) {\n return $find(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n }\n});\nrequire('./_add-to-unscopables')(KEY);\n","require('./_set-species')('Array');\n","var global = require('./_global');\nvar inheritIfRequired = require('./_inherit-if-required');\nvar dP = require('./_object-dp').f;\nvar gOPN = require('./_object-gopn').f;\nvar isRegExp = require('./_is-regexp');\nvar $flags = require('./_flags');\nvar $RegExp = global.RegExp;\nvar Base = $RegExp;\nvar proto = $RegExp.prototype;\nvar re1 = /a/g;\nvar re2 = /a/g;\n// \"new\" creates a new object, old webkit buggy here\nvar CORRECT_NEW = new $RegExp(re1) !== re1;\n\nif (require('./_descriptors') && (!CORRECT_NEW || require('./_fails')(function () {\n re2[require('./_wks')('match')] = false;\n // RegExp constructor can alter flags and IsRegExp works correct with @@match\n return $RegExp(re1) != re1 || $RegExp(re2) == re2 || $RegExp(re1, 'i') != '/a/i';\n}))) {\n $RegExp = function RegExp(p, f) {\n var tiRE = this instanceof $RegExp;\n var piRE = isRegExp(p);\n var fiU = f === undefined;\n return !tiRE && piRE && p.constructor === $RegExp && fiU ? p\n : inheritIfRequired(CORRECT_NEW\n ? new Base(piRE && !fiU ? p.source : p, f)\n : Base((piRE = p instanceof $RegExp) ? p.source : p, piRE && fiU ? $flags.call(p) : f)\n , tiRE ? this : proto, $RegExp);\n };\n var proxy = function (key) {\n key in $RegExp || dP($RegExp, key, {\n configurable: true,\n get: function () { return Base[key]; },\n set: function (it) { Base[key] = it; }\n });\n };\n for (var keys = gOPN(Base), i = 0; keys.length > i;) proxy(keys[i++]);\n proto.constructor = $RegExp;\n $RegExp.prototype = proto;\n require('./_redefine')(global, 'RegExp', $RegExp);\n}\n\nrequire('./_set-species')('RegExp');\n","'use strict';\nrequire('./es6.regexp.flags');\nvar anObject = require('./_an-object');\nvar $flags = require('./_flags');\nvar DESCRIPTORS = require('./_descriptors');\nvar TO_STRING = 'toString';\nvar $toString = /./[TO_STRING];\n\nvar define = function (fn) {\n require('./_redefine')(RegExp.prototype, TO_STRING, fn, true);\n};\n\n// 21.2.5.14 RegExp.prototype.toString()\nif (require('./_fails')(function () { return $toString.call({ source: 'a', flags: 'b' }) != '/a/b'; })) {\n define(function toString() {\n var R = anObject(this);\n return '/'.concat(R.source, '/',\n 'flags' in R ? R.flags : !DESCRIPTORS && R instanceof RegExp ? $flags.call(R) : undefined);\n });\n// FF44- RegExp#toString has a wrong name\n} else if ($toString.name != TO_STRING) {\n define(function toString() {\n return $toString.call(this);\n });\n}\n","'use strict';\n\nvar anObject = require('./_an-object');\nvar toLength = require('./_to-length');\nvar advanceStringIndex = require('./_advance-string-index');\nvar regExpExec = require('./_regexp-exec-abstract');\n\n// @@match logic\nrequire('./_fix-re-wks')('match', 1, function (defined, MATCH, $match, maybeCallNative) {\n return [\n // `String.prototype.match` method\n // https://tc39.github.io/ecma262/#sec-string.prototype.match\n function match(regexp) {\n var O = defined(this);\n var fn = regexp == undefined ? undefined : regexp[MATCH];\n return fn !== undefined ? fn.call(regexp, O) : new RegExp(regexp)[MATCH](String(O));\n },\n // `RegExp.prototype[@@match]` method\n // https://tc39.github.io/ecma262/#sec-regexp.prototype-@@match\n function (regexp) {\n var res = maybeCallNative($match, regexp, this);\n if (res.done) return res.value;\n var rx = anObject(regexp);\n var S = String(this);\n if (!rx.global) return regExpExec(rx, S);\n var fullUnicode = rx.unicode;\n rx.lastIndex = 0;\n var A = [];\n var n = 0;\n var result;\n while ((result = regExpExec(rx, S)) !== null) {\n var matchStr = String(result[0]);\n A[n] = matchStr;\n if (matchStr === '') rx.lastIndex = advanceStringIndex(S, toLength(rx.lastIndex), fullUnicode);\n n++;\n }\n return n === 0 ? null : A;\n }\n ];\n});\n","'use strict';\n\nvar anObject = require('./_an-object');\nvar toObject = require('./_to-object');\nvar toLength = require('./_to-length');\nvar toInteger = require('./_to-integer');\nvar advanceStringIndex = require('./_advance-string-index');\nvar regExpExec = require('./_regexp-exec-abstract');\nvar max = Math.max;\nvar min = Math.min;\nvar floor = Math.floor;\nvar SUBSTITUTION_SYMBOLS = /\\$([$&`']|\\d\\d?|<[^>]*>)/g;\nvar SUBSTITUTION_SYMBOLS_NO_NAMED = /\\$([$&`']|\\d\\d?)/g;\n\nvar maybeToString = function (it) {\n return it === undefined ? it : String(it);\n};\n\n// @@replace logic\nrequire('./_fix-re-wks')('replace', 2, function (defined, REPLACE, $replace, maybeCallNative) {\n return [\n // `String.prototype.replace` method\n // https://tc39.github.io/ecma262/#sec-string.prototype.replace\n function replace(searchValue, replaceValue) {\n var O = defined(this);\n var fn = searchValue == undefined ? undefined : searchValue[REPLACE];\n return fn !== undefined\n ? fn.call(searchValue, O, replaceValue)\n : $replace.call(String(O), searchValue, replaceValue);\n },\n // `RegExp.prototype[@@replace]` method\n // https://tc39.github.io/ecma262/#sec-regexp.prototype-@@replace\n function (regexp, replaceValue) {\n var res = maybeCallNative($replace, regexp, this, replaceValue);\n if (res.done) return res.value;\n\n var rx = anObject(regexp);\n var S = String(this);\n var functionalReplace = typeof replaceValue === 'function';\n if (!functionalReplace) replaceValue = String(replaceValue);\n var global = rx.global;\n if (global) {\n var fullUnicode = rx.unicode;\n rx.lastIndex = 0;\n }\n var results = [];\n while (true) {\n var result = regExpExec(rx, S);\n if (result === null) break;\n results.push(result);\n if (!global) break;\n var matchStr = String(result[0]);\n if (matchStr === '') rx.lastIndex = advanceStringIndex(S, toLength(rx.lastIndex), fullUnicode);\n }\n var accumulatedResult = '';\n var nextSourcePosition = 0;\n for (var i = 0; i < results.length; i++) {\n result = results[i];\n var matched = String(result[0]);\n var position = max(min(toInteger(result.index), S.length), 0);\n var captures = [];\n // NOTE: This is equivalent to\n // captures = result.slice(1).map(maybeToString)\n // but for some reason `nativeSlice.call(result, 1, result.length)` (called in\n // the slice polyfill when slicing native arrays) \"doesn't work\" in safari 9 and\n // causes a crash (https://pastebin.com/N21QzeQA) when trying to debug it.\n for (var j = 1; j < result.length; j++) captures.push(maybeToString(result[j]));\n var namedCaptures = result.groups;\n if (functionalReplace) {\n var replacerArgs = [matched].concat(captures, position, S);\n if (namedCaptures !== undefined) replacerArgs.push(namedCaptures);\n var replacement = String(replaceValue.apply(undefined, replacerArgs));\n } else {\n replacement = getSubstitution(matched, S, position, captures, namedCaptures, replaceValue);\n }\n if (position >= nextSourcePosition) {\n accumulatedResult += S.slice(nextSourcePosition, position) + replacement;\n nextSourcePosition = position + matched.length;\n }\n }\n return accumulatedResult + S.slice(nextSourcePosition);\n }\n ];\n\n // https://tc39.github.io/ecma262/#sec-getsubstitution\n function getSubstitution(matched, str, position, captures, namedCaptures, replacement) {\n var tailPos = position + matched.length;\n var m = captures.length;\n var symbols = SUBSTITUTION_SYMBOLS_NO_NAMED;\n if (namedCaptures !== undefined) {\n namedCaptures = toObject(namedCaptures);\n symbols = SUBSTITUTION_SYMBOLS;\n }\n return $replace.call(replacement, symbols, function (match, ch) {\n var capture;\n switch (ch.charAt(0)) {\n case '$': return '$';\n case '&': return matched;\n case '`': return str.slice(0, position);\n case \"'\": return str.slice(tailPos);\n case '<':\n capture = namedCaptures[ch.slice(1, -1)];\n break;\n default: // \\d\\d?\n var n = +ch;\n if (n === 0) return match;\n if (n > m) {\n var f = floor(n / 10);\n if (f === 0) return match;\n if (f <= m) return captures[f - 1] === undefined ? ch.charAt(1) : captures[f - 1] + ch.charAt(1);\n return match;\n }\n capture = captures[n - 1];\n }\n return capture === undefined ? '' : capture;\n });\n }\n});\n","'use strict';\n\nvar anObject = require('./_an-object');\nvar sameValue = require('./_same-value');\nvar regExpExec = require('./_regexp-exec-abstract');\n\n// @@search logic\nrequire('./_fix-re-wks')('search', 1, function (defined, SEARCH, $search, maybeCallNative) {\n return [\n // `String.prototype.search` method\n // https://tc39.github.io/ecma262/#sec-string.prototype.search\n function search(regexp) {\n var O = defined(this);\n var fn = regexp == undefined ? undefined : regexp[SEARCH];\n return fn !== undefined ? fn.call(regexp, O) : new RegExp(regexp)[SEARCH](String(O));\n },\n // `RegExp.prototype[@@search]` method\n // https://tc39.github.io/ecma262/#sec-regexp.prototype-@@search\n function (regexp) {\n var res = maybeCallNative($search, regexp, this);\n if (res.done) return res.value;\n var rx = anObject(regexp);\n var S = String(this);\n var previousLastIndex = rx.lastIndex;\n if (!sameValue(previousLastIndex, 0)) rx.lastIndex = 0;\n var result = regExpExec(rx, S);\n if (!sameValue(rx.lastIndex, previousLastIndex)) rx.lastIndex = previousLastIndex;\n return result === null ? -1 : result.index;\n }\n ];\n});\n","'use strict';\n\nvar isRegExp = require('./_is-regexp');\nvar anObject = require('./_an-object');\nvar speciesConstructor = require('./_species-constructor');\nvar advanceStringIndex = require('./_advance-string-index');\nvar toLength = require('./_to-length');\nvar callRegExpExec = require('./_regexp-exec-abstract');\nvar regexpExec = require('./_regexp-exec');\nvar fails = require('./_fails');\nvar $min = Math.min;\nvar $push = [].push;\nvar $SPLIT = 'split';\nvar LENGTH = 'length';\nvar LAST_INDEX = 'lastIndex';\nvar MAX_UINT32 = 0xffffffff;\n\n// babel-minify transpiles RegExp('x', 'y') -> /x/y and it causes SyntaxError\nvar SUPPORTS_Y = !fails(function () { RegExp(MAX_UINT32, 'y'); });\n\n// @@split logic\nrequire('./_fix-re-wks')('split', 2, function (defined, SPLIT, $split, maybeCallNative) {\n var internalSplit;\n if (\n 'abbc'[$SPLIT](/(b)*/)[1] == 'c' ||\n 'test'[$SPLIT](/(?:)/, -1)[LENGTH] != 4 ||\n 'ab'[$SPLIT](/(?:ab)*/)[LENGTH] != 2 ||\n '.'[$SPLIT](/(.?)(.?)/)[LENGTH] != 4 ||\n '.'[$SPLIT](/()()/)[LENGTH] > 1 ||\n ''[$SPLIT](/.?/)[LENGTH]\n ) {\n // based on es5-shim implementation, need to rework it\n internalSplit = function (separator, limit) {\n var string = String(this);\n if (separator === undefined && limit === 0) return [];\n // If `separator` is not a regex, use native split\n if (!isRegExp(separator)) return $split.call(string, separator, limit);\n var output = [];\n var flags = (separator.ignoreCase ? 'i' : '') +\n (separator.multiline ? 'm' : '') +\n (separator.unicode ? 'u' : '') +\n (separator.sticky ? 'y' : '');\n var lastLastIndex = 0;\n var splitLimit = limit === undefined ? MAX_UINT32 : limit >>> 0;\n // Make `global` and avoid `lastIndex` issues by working with a copy\n var separatorCopy = new RegExp(separator.source, flags + 'g');\n var match, lastIndex, lastLength;\n while (match = regexpExec.call(separatorCopy, string)) {\n lastIndex = separatorCopy[LAST_INDEX];\n if (lastIndex > lastLastIndex) {\n output.push(string.slice(lastLastIndex, match.index));\n if (match[LENGTH] > 1 && match.index < string[LENGTH]) $push.apply(output, match.slice(1));\n lastLength = match[0][LENGTH];\n lastLastIndex = lastIndex;\n if (output[LENGTH] >= splitLimit) break;\n }\n if (separatorCopy[LAST_INDEX] === match.index) separatorCopy[LAST_INDEX]++; // Avoid an infinite loop\n }\n if (lastLastIndex === string[LENGTH]) {\n if (lastLength || !separatorCopy.test('')) output.push('');\n } else output.push(string.slice(lastLastIndex));\n return output[LENGTH] > splitLimit ? output.slice(0, splitLimit) : output;\n };\n // Chakra, V8\n } else if ('0'[$SPLIT](undefined, 0)[LENGTH]) {\n internalSplit = function (separator, limit) {\n return separator === undefined && limit === 0 ? [] : $split.call(this, separator, limit);\n };\n } else {\n internalSplit = $split;\n }\n\n return [\n // `String.prototype.split` method\n // https://tc39.github.io/ecma262/#sec-string.prototype.split\n function split(separator, limit) {\n var O = defined(this);\n var splitter = separator == undefined ? undefined : separator[SPLIT];\n return splitter !== undefined\n ? splitter.call(separator, O, limit)\n : internalSplit.call(String(O), separator, limit);\n },\n // `RegExp.prototype[@@split]` method\n // https://tc39.github.io/ecma262/#sec-regexp.prototype-@@split\n //\n // NOTE: This cannot be properly polyfilled in engines that don't support\n // the 'y' flag.\n function (regexp, limit) {\n var res = maybeCallNative(internalSplit, regexp, this, limit, internalSplit !== $split);\n if (res.done) return res.value;\n\n var rx = anObject(regexp);\n var S = String(this);\n var C = speciesConstructor(rx, RegExp);\n\n var unicodeMatching = rx.unicode;\n var flags = (rx.ignoreCase ? 'i' : '') +\n (rx.multiline ? 'm' : '') +\n (rx.unicode ? 'u' : '') +\n (SUPPORTS_Y ? 'y' : 'g');\n\n // ^(? + rx + ) is needed, in combination with some S slicing, to\n // simulate the 'y' flag.\n var splitter = new C(SUPPORTS_Y ? rx : '^(?:' + rx.source + ')', flags);\n var lim = limit === undefined ? MAX_UINT32 : limit >>> 0;\n if (lim === 0) return [];\n if (S.length === 0) return callRegExpExec(splitter, S) === null ? [S] : [];\n var p = 0;\n var q = 0;\n var A = [];\n while (q < S.length) {\n splitter.lastIndex = SUPPORTS_Y ? q : 0;\n var z = callRegExpExec(splitter, SUPPORTS_Y ? S : S.slice(q));\n var e;\n if (\n z === null ||\n (e = $min(toLength(splitter.lastIndex + (SUPPORTS_Y ? 0 : q)), S.length)) === p\n ) {\n q = advanceStringIndex(S, q, unicodeMatching);\n } else {\n A.push(S.slice(p, q));\n if (A.length === lim) return A;\n for (var i = 1; i <= z.length - 1; i++) {\n A.push(z[i]);\n if (A.length === lim) return A;\n }\n q = p = e;\n }\n }\n A.push(S.slice(p));\n return A;\n }\n ];\n});\n","var global = require('./_global');\nvar macrotask = require('./_task').set;\nvar Observer = global.MutationObserver || global.WebKitMutationObserver;\nvar process = global.process;\nvar Promise = global.Promise;\nvar isNode = require('./_cof')(process) == 'process';\n\nmodule.exports = function () {\n var head, last, notify;\n\n var flush = function () {\n var parent, fn;\n if (isNode && (parent = process.domain)) parent.exit();\n while (head) {\n fn = head.fn;\n head = head.next;\n try {\n fn();\n } catch (e) {\n if (head) notify();\n else last = undefined;\n throw e;\n }\n } last = undefined;\n if (parent) parent.enter();\n };\n\n // Node.js\n if (isNode) {\n notify = function () {\n process.nextTick(flush);\n };\n // browsers with MutationObserver, except iOS Safari - https://github.com/zloirock/core-js/issues/339\n } else if (Observer && !(global.navigator && global.navigator.standalone)) {\n var toggle = true;\n var node = document.createTextNode('');\n new Observer(flush).observe(node, { characterData: true }); // eslint-disable-line no-new\n notify = function () {\n node.data = toggle = !toggle;\n };\n // environments with maybe non-completely correct, but existent Promise\n } else if (Promise && Promise.resolve) {\n // Promise.resolve without an argument throws an error in LG WebOS 2\n var promise = Promise.resolve(undefined);\n notify = function () {\n promise.then(flush);\n };\n // for other environments - macrotask based on:\n // - setImmediate\n // - MessageChannel\n // - window.postMessag\n // - onreadystatechange\n // - setTimeout\n } else {\n notify = function () {\n // strange IE + webpack dev server bug - use .call(global)\n macrotask.call(global, flush);\n };\n }\n\n return function (fn) {\n var task = { fn: fn, next: undefined };\n if (last) last.next = task;\n if (!head) {\n head = task;\n notify();\n } last = task;\n };\n};\n","module.exports = function (exec) {\n try {\n return { e: false, v: exec() };\n } catch (e) {\n return { e: true, v: e };\n }\n};\n","'use strict';\nvar strong = require('./_collection-strong');\nvar validate = require('./_validate-collection');\nvar MAP = 'Map';\n\n// 23.1 Map Objects\nmodule.exports = require('./_collection')(MAP, function (get) {\n return function Map() { return get(this, arguments.length > 0 ? arguments[0] : undefined); };\n}, {\n // 23.1.3.6 Map.prototype.get(key)\n get: function get(key) {\n var entry = strong.getEntry(validate(this, MAP), key);\n return entry && entry.v;\n },\n // 23.1.3.9 Map.prototype.set(key, value)\n set: function set(key, value) {\n return strong.def(validate(this, MAP), key === 0 ? 0 : key, value);\n }\n}, strong, true);\n","'use strict';\nvar strong = require('./_collection-strong');\nvar validate = require('./_validate-collection');\nvar SET = 'Set';\n\n// 23.2 Set Objects\nmodule.exports = require('./_collection')(SET, function (get) {\n return function Set() { return get(this, arguments.length > 0 ? arguments[0] : undefined); };\n}, {\n // 23.2.3.1 Set.prototype.add(value)\n add: function add(value) {\n return strong.def(validate(this, SET), value = value === 0 ? 0 : value, value);\n }\n}, strong);\n","'use strict';\nvar global = require('./_global');\nvar each = require('./_array-methods')(0);\nvar redefine = require('./_redefine');\nvar meta = require('./_meta');\nvar assign = require('./_object-assign');\nvar weak = require('./_collection-weak');\nvar isObject = require('./_is-object');\nvar validate = require('./_validate-collection');\nvar NATIVE_WEAK_MAP = require('./_validate-collection');\nvar IS_IE11 = !global.ActiveXObject && 'ActiveXObject' in global;\nvar WEAK_MAP = 'WeakMap';\nvar getWeak = meta.getWeak;\nvar isExtensible = Object.isExtensible;\nvar uncaughtFrozenStore = weak.ufstore;\nvar InternalMap;\n\nvar wrapper = function (get) {\n return function WeakMap() {\n return get(this, arguments.length > 0 ? arguments[0] : undefined);\n };\n};\n\nvar methods = {\n // 23.3.3.3 WeakMap.prototype.get(key)\n get: function get(key) {\n if (isObject(key)) {\n var data = getWeak(key);\n if (data === true) return uncaughtFrozenStore(validate(this, WEAK_MAP)).get(key);\n return data ? data[this._i] : undefined;\n }\n },\n // 23.3.3.5 WeakMap.prototype.set(key, value)\n set: function set(key, value) {\n return weak.def(validate(this, WEAK_MAP), key, value);\n }\n};\n\n// 23.3 WeakMap Objects\nvar $WeakMap = module.exports = require('./_collection')(WEAK_MAP, wrapper, methods, weak, true, true);\n\n// IE11 WeakMap frozen keys fix\nif (NATIVE_WEAK_MAP && IS_IE11) {\n InternalMap = weak.getConstructor(wrapper, WEAK_MAP);\n assign(InternalMap.prototype, methods);\n meta.NEED = true;\n each(['delete', 'has', 'get', 'set'], function (key) {\n var proto = $WeakMap.prototype;\n var method = proto[key];\n redefine(proto, key, function (a, b) {\n // store frozen objects on internal weakmap shim\n if (isObject(a) && !isExtensible(a)) {\n if (!this._f) this._f = new InternalMap();\n var result = this._f[key](a, b);\n return key == 'set' ? this : result;\n // store all the rest on native weakmap\n } return method.call(this, a, b);\n });\n });\n}\n","'use strict';\nvar weak = require('./_collection-weak');\nvar validate = require('./_validate-collection');\nvar WEAK_SET = 'WeakSet';\n\n// 23.4 WeakSet Objects\nrequire('./_collection')(WEAK_SET, function (get) {\n return function WeakSet() { return get(this, arguments.length > 0 ? arguments[0] : undefined); };\n}, {\n // 23.4.3.1 WeakSet.prototype.add(value)\n add: function add(value) {\n return weak.def(validate(this, WEAK_SET), value, true);\n }\n}, weak, false, true);\n","'use strict';\nvar $export = require('./_export');\nvar $typed = require('./_typed');\nvar buffer = require('./_typed-buffer');\nvar anObject = require('./_an-object');\nvar toAbsoluteIndex = require('./_to-absolute-index');\nvar toLength = require('./_to-length');\nvar isObject = require('./_is-object');\nvar ArrayBuffer = require('./_global').ArrayBuffer;\nvar speciesConstructor = require('./_species-constructor');\nvar $ArrayBuffer = buffer.ArrayBuffer;\nvar $DataView = buffer.DataView;\nvar $isView = $typed.ABV && ArrayBuffer.isView;\nvar $slice = $ArrayBuffer.prototype.slice;\nvar VIEW = $typed.VIEW;\nvar ARRAY_BUFFER = 'ArrayBuffer';\n\n$export($export.G + $export.W + $export.F * (ArrayBuffer !== $ArrayBuffer), { ArrayBuffer: $ArrayBuffer });\n\n$export($export.S + $export.F * !$typed.CONSTR, ARRAY_BUFFER, {\n // 24.1.3.1 ArrayBuffer.isView(arg)\n isView: function isView(it) {\n return $isView && $isView(it) || isObject(it) && VIEW in it;\n }\n});\n\n$export($export.P + $export.U + $export.F * require('./_fails')(function () {\n return !new $ArrayBuffer(2).slice(1, undefined).byteLength;\n}), ARRAY_BUFFER, {\n // 24.1.4.3 ArrayBuffer.prototype.slice(start, end)\n slice: function slice(start, end) {\n if ($slice !== undefined && end === undefined) return $slice.call(anObject(this), start); // FF fix\n var len = anObject(this).byteLength;\n var first = toAbsoluteIndex(start, len);\n var fin = toAbsoluteIndex(end === undefined ? len : end, len);\n var result = new (speciesConstructor(this, $ArrayBuffer))(toLength(fin - first));\n var viewS = new $DataView(this);\n var viewT = new $DataView(result);\n var index = 0;\n while (first < fin) {\n viewT.setUint8(index++, viewS.getUint8(first++));\n } return result;\n }\n});\n\nrequire('./_set-species')(ARRAY_BUFFER);\n","var $export = require('./_export');\n$export($export.G + $export.W + $export.F * !require('./_typed').ABV, {\n DataView: require('./_typed-buffer').DataView\n});\n","require('./_typed-array')('Int8', 1, function (init) {\n return function Int8Array(data, byteOffset, length) {\n return init(this, data, byteOffset, length);\n };\n});\n","require('./_typed-array')('Uint8', 1, function (init) {\n return function Uint8Array(data, byteOffset, length) {\n return init(this, data, byteOffset, length);\n };\n});\n","require('./_typed-array')('Uint8', 1, function (init) {\n return function Uint8ClampedArray(data, byteOffset, length) {\n return init(this, data, byteOffset, length);\n };\n}, true);\n","require('./_typed-array')('Int16', 2, function (init) {\n return function Int16Array(data, byteOffset, length) {\n return init(this, data, byteOffset, length);\n };\n});\n","require('./_typed-array')('Uint16', 2, function (init) {\n return function Uint16Array(data, byteOffset, length) {\n return init(this, data, byteOffset, length);\n };\n});\n","require('./_typed-array')('Int32', 4, function (init) {\n return function Int32Array(data, byteOffset, length) {\n return init(this, data, byteOffset, length);\n };\n});\n","require('./_typed-array')('Uint32', 4, function (init) {\n return function Uint32Array(data, byteOffset, length) {\n return init(this, data, byteOffset, length);\n };\n});\n","require('./_typed-array')('Float32', 4, function (init) {\n return function Float32Array(data, byteOffset, length) {\n return init(this, data, byteOffset, length);\n };\n});\n","require('./_typed-array')('Float64', 8, function (init) {\n return function Float64Array(data, byteOffset, length) {\n return init(this, data, byteOffset, length);\n };\n});\n","// 26.1.1 Reflect.apply(target, thisArgument, argumentsList)\nvar $export = require('./_export');\nvar aFunction = require('./_a-function');\nvar anObject = require('./_an-object');\nvar rApply = (require('./_global').Reflect || {}).apply;\nvar fApply = Function.apply;\n// MS Edge argumentsList argument is optional\n$export($export.S + $export.F * !require('./_fails')(function () {\n rApply(function () { /* empty */ });\n}), 'Reflect', {\n apply: function apply(target, thisArgument, argumentsList) {\n var T = aFunction(target);\n var L = anObject(argumentsList);\n return rApply ? rApply(T, thisArgument, L) : fApply.call(T, thisArgument, L);\n }\n});\n","// 26.1.2 Reflect.construct(target, argumentsList [, newTarget])\nvar $export = require('./_export');\nvar create = require('./_object-create');\nvar aFunction = require('./_a-function');\nvar anObject = require('./_an-object');\nvar isObject = require('./_is-object');\nvar fails = require('./_fails');\nvar bind = require('./_bind');\nvar rConstruct = (require('./_global').Reflect || {}).construct;\n\n// MS Edge supports only 2 arguments and argumentsList argument is optional\n// FF Nightly sets third argument as `new.target`, but does not create `this` from it\nvar NEW_TARGET_BUG = fails(function () {\n function F() { /* empty */ }\n return !(rConstruct(function () { /* empty */ }, [], F) instanceof F);\n});\nvar ARGS_BUG = !fails(function () {\n rConstruct(function () { /* empty */ });\n});\n\n$export($export.S + $export.F * (NEW_TARGET_BUG || ARGS_BUG), 'Reflect', {\n construct: function construct(Target, args /* , newTarget */) {\n aFunction(Target);\n anObject(args);\n var newTarget = arguments.length < 3 ? Target : aFunction(arguments[2]);\n if (ARGS_BUG && !NEW_TARGET_BUG) return rConstruct(Target, args, newTarget);\n if (Target == newTarget) {\n // w/o altered newTarget, optimization for 0-4 arguments\n switch (args.length) {\n case 0: return new Target();\n case 1: return new Target(args[0]);\n case 2: return new Target(args[0], args[1]);\n case 3: return new Target(args[0], args[1], args[2]);\n case 4: return new Target(args[0], args[1], args[2], args[3]);\n }\n // w/o altered newTarget, lot of arguments case\n var $args = [null];\n $args.push.apply($args, args);\n return new (bind.apply(Target, $args))();\n }\n // with altered newTarget, not support built-in constructors\n var proto = newTarget.prototype;\n var instance = create(isObject(proto) ? proto : Object.prototype);\n var result = Function.apply.call(Target, instance, args);\n return isObject(result) ? result : instance;\n }\n});\n","// 26.1.3 Reflect.defineProperty(target, propertyKey, attributes)\nvar dP = require('./_object-dp');\nvar $export = require('./_export');\nvar anObject = require('./_an-object');\nvar toPrimitive = require('./_to-primitive');\n\n// MS Edge has broken Reflect.defineProperty - throwing instead of returning false\n$export($export.S + $export.F * require('./_fails')(function () {\n // eslint-disable-next-line no-undef\n Reflect.defineProperty(dP.f({}, 1, { value: 1 }), 1, { value: 2 });\n}), 'Reflect', {\n defineProperty: function defineProperty(target, propertyKey, attributes) {\n anObject(target);\n propertyKey = toPrimitive(propertyKey, true);\n anObject(attributes);\n try {\n dP.f(target, propertyKey, attributes);\n return true;\n } catch (e) {\n return false;\n }\n }\n});\n","// 26.1.4 Reflect.deleteProperty(target, propertyKey)\nvar $export = require('./_export');\nvar gOPD = require('./_object-gopd').f;\nvar anObject = require('./_an-object');\n\n$export($export.S, 'Reflect', {\n deleteProperty: function deleteProperty(target, propertyKey) {\n var desc = gOPD(anObject(target), propertyKey);\n return desc && !desc.configurable ? false : delete target[propertyKey];\n }\n});\n","'use strict';\n// 26.1.5 Reflect.enumerate(target)\nvar $export = require('./_export');\nvar anObject = require('./_an-object');\nvar Enumerate = function (iterated) {\n this._t = anObject(iterated); // target\n this._i = 0; // next index\n var keys = this._k = []; // keys\n var key;\n for (key in iterated) keys.push(key);\n};\nrequire('./_iter-create')(Enumerate, 'Object', function () {\n var that = this;\n var keys = that._k;\n var key;\n do {\n if (that._i >= keys.length) return { value: undefined, done: true };\n } while (!((key = keys[that._i++]) in that._t));\n return { value: key, done: false };\n});\n\n$export($export.S, 'Reflect', {\n enumerate: function enumerate(target) {\n return new Enumerate(target);\n }\n});\n","// 26.1.6 Reflect.get(target, propertyKey [, receiver])\nvar gOPD = require('./_object-gopd');\nvar getPrototypeOf = require('./_object-gpo');\nvar has = require('./_has');\nvar $export = require('./_export');\nvar isObject = require('./_is-object');\nvar anObject = require('./_an-object');\n\nfunction get(target, propertyKey /* , receiver */) {\n var receiver = arguments.length < 3 ? target : arguments[2];\n var desc, proto;\n if (anObject(target) === receiver) return target[propertyKey];\n if (desc = gOPD.f(target, propertyKey)) return has(desc, 'value')\n ? desc.value\n : desc.get !== undefined\n ? desc.get.call(receiver)\n : undefined;\n if (isObject(proto = getPrototypeOf(target))) return get(proto, propertyKey, receiver);\n}\n\n$export($export.S, 'Reflect', { get: get });\n","// 26.1.7 Reflect.getOwnPropertyDescriptor(target, propertyKey)\nvar gOPD = require('./_object-gopd');\nvar $export = require('./_export');\nvar anObject = require('./_an-object');\n\n$export($export.S, 'Reflect', {\n getOwnPropertyDescriptor: function getOwnPropertyDescriptor(target, propertyKey) {\n return gOPD.f(anObject(target), propertyKey);\n }\n});\n","// 26.1.8 Reflect.getPrototypeOf(target)\nvar $export = require('./_export');\nvar getProto = require('./_object-gpo');\nvar anObject = require('./_an-object');\n\n$export($export.S, 'Reflect', {\n getPrototypeOf: function getPrototypeOf(target) {\n return getProto(anObject(target));\n }\n});\n","// 26.1.9 Reflect.has(target, propertyKey)\nvar $export = require('./_export');\n\n$export($export.S, 'Reflect', {\n has: function has(target, propertyKey) {\n return propertyKey in target;\n }\n});\n","// 26.1.10 Reflect.isExtensible(target)\nvar $export = require('./_export');\nvar anObject = require('./_an-object');\nvar $isExtensible = Object.isExtensible;\n\n$export($export.S, 'Reflect', {\n isExtensible: function isExtensible(target) {\n anObject(target);\n return $isExtensible ? $isExtensible(target) : true;\n }\n});\n","// 26.1.11 Reflect.ownKeys(target)\nvar $export = require('./_export');\n\n$export($export.S, 'Reflect', { ownKeys: require('./_own-keys') });\n","// 26.1.12 Reflect.preventExtensions(target)\nvar $export = require('./_export');\nvar anObject = require('./_an-object');\nvar $preventExtensions = Object.preventExtensions;\n\n$export($export.S, 'Reflect', {\n preventExtensions: function preventExtensions(target) {\n anObject(target);\n try {\n if ($preventExtensions) $preventExtensions(target);\n return true;\n } catch (e) {\n return false;\n }\n }\n});\n","// 26.1.13 Reflect.set(target, propertyKey, V [, receiver])\nvar dP = require('./_object-dp');\nvar gOPD = require('./_object-gopd');\nvar getPrototypeOf = require('./_object-gpo');\nvar has = require('./_has');\nvar $export = require('./_export');\nvar createDesc = require('./_property-desc');\nvar anObject = require('./_an-object');\nvar isObject = require('./_is-object');\n\nfunction set(target, propertyKey, V /* , receiver */) {\n var receiver = arguments.length < 4 ? target : arguments[3];\n var ownDesc = gOPD.f(anObject(target), propertyKey);\n var existingDescriptor, proto;\n if (!ownDesc) {\n if (isObject(proto = getPrototypeOf(target))) {\n return set(proto, propertyKey, V, receiver);\n }\n ownDesc = createDesc(0);\n }\n if (has(ownDesc, 'value')) {\n if (ownDesc.writable === false || !isObject(receiver)) return false;\n if (existingDescriptor = gOPD.f(receiver, propertyKey)) {\n if (existingDescriptor.get || existingDescriptor.set || existingDescriptor.writable === false) return false;\n existingDescriptor.value = V;\n dP.f(receiver, propertyKey, existingDescriptor);\n } else dP.f(receiver, propertyKey, createDesc(0, V));\n return true;\n }\n return ownDesc.set === undefined ? false : (ownDesc.set.call(receiver, V), true);\n}\n\n$export($export.S, 'Reflect', { set: set });\n","// 26.1.14 Reflect.setPrototypeOf(target, proto)\nvar $export = require('./_export');\nvar setProto = require('./_set-proto');\n\nif (setProto) $export($export.S, 'Reflect', {\n setPrototypeOf: function setPrototypeOf(target, proto) {\n setProto.check(target, proto);\n try {\n setProto.set(target, proto);\n return true;\n } catch (e) {\n return false;\n }\n }\n});\n","require('../../modules/es7.array.flat-map');\nmodule.exports = require('../../modules/_core').Array.flatMap;\n","'use strict';\n// https://tc39.github.io/proposal-flatMap/#sec-Array.prototype.flatMap\nvar $export = require('./_export');\nvar flattenIntoArray = require('./_flatten-into-array');\nvar toObject = require('./_to-object');\nvar toLength = require('./_to-length');\nvar aFunction = require('./_a-function');\nvar arraySpeciesCreate = require('./_array-species-create');\n\n$export($export.P, 'Array', {\n flatMap: function flatMap(callbackfn /* , thisArg */) {\n var O = toObject(this);\n var sourceLen, A;\n aFunction(callbackfn);\n sourceLen = toLength(O.length);\n A = arraySpeciesCreate(O, 0);\n flattenIntoArray(A, O, O, sourceLen, 0, 1, callbackfn, arguments[1]);\n return A;\n }\n});\n\nrequire('./_add-to-unscopables')('flatMap');\n","'use strict';\n// https://tc39.github.io/proposal-flatMap/#sec-FlattenIntoArray\nvar isArray = require('./_is-array');\nvar isObject = require('./_is-object');\nvar toLength = require('./_to-length');\nvar ctx = require('./_ctx');\nvar IS_CONCAT_SPREADABLE = require('./_wks')('isConcatSpreadable');\n\nfunction flattenIntoArray(target, original, source, sourceLen, start, depth, mapper, thisArg) {\n var targetIndex = start;\n var sourceIndex = 0;\n var mapFn = mapper ? ctx(mapper, thisArg, 3) : false;\n var element, spreadable;\n\n while (sourceIndex < sourceLen) {\n if (sourceIndex in source) {\n element = mapFn ? mapFn(source[sourceIndex], sourceIndex, original) : source[sourceIndex];\n\n spreadable = false;\n if (isObject(element)) {\n spreadable = element[IS_CONCAT_SPREADABLE];\n spreadable = spreadable !== undefined ? !!spreadable : isArray(element);\n }\n\n if (spreadable && depth > 0) {\n targetIndex = flattenIntoArray(target, original, element, toLength(element.length), targetIndex, depth - 1) - 1;\n } else {\n if (targetIndex >= 0x1fffffffffffff) throw TypeError();\n target[targetIndex] = element;\n }\n\n targetIndex++;\n }\n sourceIndex++;\n }\n return targetIndex;\n}\n\nmodule.exports = flattenIntoArray;\n","require('../../modules/es7.string.pad-start');\nmodule.exports = require('../../modules/_core').String.padStart;\n","'use strict';\n// https://github.com/tc39/proposal-string-pad-start-end\nvar $export = require('./_export');\nvar $pad = require('./_string-pad');\nvar userAgent = require('./_user-agent');\n\n// https://github.com/zloirock/core-js/issues/280\nvar WEBKIT_BUG = /Version\\/10\\.\\d+(\\.\\d+)?( Mobile\\/\\w+)? Safari\\//.test(userAgent);\n\n$export($export.P + $export.F * WEBKIT_BUG, 'String', {\n padStart: function padStart(maxLength /* , fillString = ' ' */) {\n return $pad(this, maxLength, arguments.length > 1 ? arguments[1] : undefined, true);\n }\n});\n","require('../../modules/es7.string.pad-end');\nmodule.exports = require('../../modules/_core').String.padEnd;\n","'use strict';\n// https://github.com/tc39/proposal-string-pad-start-end\nvar $export = require('./_export');\nvar $pad = require('./_string-pad');\nvar userAgent = require('./_user-agent');\n\n// https://github.com/zloirock/core-js/issues/280\nvar WEBKIT_BUG = /Version\\/10\\.\\d+(\\.\\d+)?( Mobile\\/\\w+)? Safari\\//.test(userAgent);\n\n$export($export.P + $export.F * WEBKIT_BUG, 'String', {\n padEnd: function padEnd(maxLength /* , fillString = ' ' */) {\n return $pad(this, maxLength, arguments.length > 1 ? arguments[1] : undefined, false);\n }\n});\n","require('../../modules/es7.string.trim-left');\nmodule.exports = require('../../modules/_core').String.trimLeft;\n","'use strict';\n// https://github.com/sebmarkbage/ecmascript-string-left-right-trim\nrequire('./_string-trim')('trimLeft', function ($trim) {\n return function trimLeft() {\n return $trim(this, 1);\n };\n}, 'trimStart');\n","require('../../modules/es7.string.trim-right');\nmodule.exports = require('../../modules/_core').String.trimRight;\n","'use strict';\n// https://github.com/sebmarkbage/ecmascript-string-left-right-trim\nrequire('./_string-trim')('trimRight', function ($trim) {\n return function trimRight() {\n return $trim(this, 2);\n };\n}, 'trimEnd');\n","require('../../modules/es7.symbol.async-iterator');\nmodule.exports = require('../../modules/_wks-ext').f('asyncIterator');\n","require('./_wks-define')('asyncIterator');\n","require('../../modules/es7.object.get-own-property-descriptors');\nmodule.exports = require('../../modules/_core').Object.getOwnPropertyDescriptors;\n","// https://github.com/tc39/proposal-object-getownpropertydescriptors\nvar $export = require('./_export');\nvar ownKeys = require('./_own-keys');\nvar toIObject = require('./_to-iobject');\nvar gOPD = require('./_object-gopd');\nvar createProperty = require('./_create-property');\n\n$export($export.S, 'Object', {\n getOwnPropertyDescriptors: function getOwnPropertyDescriptors(object) {\n var O = toIObject(object);\n var getDesc = gOPD.f;\n var keys = ownKeys(O);\n var result = {};\n var i = 0;\n var key, desc;\n while (keys.length > i) {\n desc = getDesc(O, key = keys[i++]);\n if (desc !== undefined) createProperty(result, key, desc);\n }\n return result;\n }\n});\n","require('../../modules/es7.object.values');\nmodule.exports = require('../../modules/_core').Object.values;\n","// https://github.com/tc39/proposal-object-values-entries\nvar $export = require('./_export');\nvar $values = require('./_object-to-array')(false);\n\n$export($export.S, 'Object', {\n values: function values(it) {\n return $values(it);\n }\n});\n","require('../../modules/es7.object.entries');\nmodule.exports = require('../../modules/_core').Object.entries;\n","// https://github.com/tc39/proposal-object-values-entries\nvar $export = require('./_export');\nvar $entries = require('./_object-to-array')(true);\n\n$export($export.S, 'Object', {\n entries: function entries(it) {\n return $entries(it);\n }\n});\n","'use strict';\nrequire('../../modules/es6.promise');\nrequire('../../modules/es7.promise.finally');\nmodule.exports = require('../../modules/_core').Promise['finally'];\n","// https://github.com/tc39/proposal-promise-finally\n'use strict';\nvar $export = require('./_export');\nvar core = require('./_core');\nvar global = require('./_global');\nvar speciesConstructor = require('./_species-constructor');\nvar promiseResolve = require('./_promise-resolve');\n\n$export($export.P + $export.R, 'Promise', { 'finally': function (onFinally) {\n var C = speciesConstructor(this, core.Promise || global.Promise);\n var isFunction = typeof onFinally == 'function';\n return this.then(\n isFunction ? function (x) {\n return promiseResolve(C, onFinally()).then(function () { return x; });\n } : onFinally,\n isFunction ? function (e) {\n return promiseResolve(C, onFinally()).then(function () { throw e; });\n } : onFinally\n );\n} });\n","require('../modules/web.timers');\nrequire('../modules/web.immediate');\nrequire('../modules/web.dom.iterable');\nmodule.exports = require('../modules/_core');\n","// ie9- setTimeout & setInterval additional parameters fix\nvar global = require('./_global');\nvar $export = require('./_export');\nvar userAgent = require('./_user-agent');\nvar slice = [].slice;\nvar MSIE = /MSIE .\\./.test(userAgent); // <- dirty ie9- check\nvar wrap = function (set) {\n return function (fn, time /* , ...args */) {\n var boundArgs = arguments.length > 2;\n var args = boundArgs ? slice.call(arguments, 2) : false;\n return set(boundArgs ? function () {\n // eslint-disable-next-line no-new-func\n (typeof fn == 'function' ? fn : Function(fn)).apply(this, args);\n } : fn, time);\n };\n};\n$export($export.G + $export.B + $export.F * MSIE, {\n setTimeout: wrap(global.setTimeout),\n setInterval: wrap(global.setInterval)\n});\n","var $export = require('./_export');\nvar $task = require('./_task');\n$export($export.G + $export.B, {\n setImmediate: $task.set,\n clearImmediate: $task.clear\n});\n","var $iterators = require('./es6.array.iterator');\nvar getKeys = require('./_object-keys');\nvar redefine = require('./_redefine');\nvar global = require('./_global');\nvar hide = require('./_hide');\nvar Iterators = require('./_iterators');\nvar wks = require('./_wks');\nvar ITERATOR = wks('iterator');\nvar TO_STRING_TAG = wks('toStringTag');\nvar ArrayValues = Iterators.Array;\n\nvar DOMIterables = {\n CSSRuleList: true, // TODO: Not spec compliant, should be false.\n CSSStyleDeclaration: false,\n CSSValueList: false,\n ClientRectList: false,\n DOMRectList: false,\n DOMStringList: false,\n DOMTokenList: true,\n DataTransferItemList: false,\n FileList: false,\n HTMLAllCollection: false,\n HTMLCollection: false,\n HTMLFormElement: false,\n HTMLSelectElement: false,\n MediaList: true, // TODO: Not spec compliant, should be false.\n MimeTypeArray: false,\n NamedNodeMap: false,\n NodeList: true,\n PaintRequestList: false,\n Plugin: false,\n PluginArray: false,\n SVGLengthList: false,\n SVGNumberList: false,\n SVGPathSegList: false,\n SVGPointList: false,\n SVGStringList: false,\n SVGTransformList: false,\n SourceBufferList: false,\n StyleSheetList: true, // TODO: Not spec compliant, should be false.\n TextTrackCueList: false,\n TextTrackList: false,\n TouchList: false\n};\n\nfor (var collections = getKeys(DOMIterables), i = 0; i < collections.length; i++) {\n var NAME = collections[i];\n var explicit = DOMIterables[NAME];\n var Collection = global[NAME];\n var proto = Collection && Collection.prototype;\n var key;\n if (proto) {\n if (!proto[ITERATOR]) hide(proto, ITERATOR, ArrayValues);\n if (!proto[TO_STRING_TAG]) hide(proto, TO_STRING_TAG, NAME);\n Iterators[NAME] = ArrayValues;\n if (explicit) for (key in $iterators) if (!proto[key]) redefine(proto, key, $iterators[key], true);\n }\n}\n","/**\n * Copyright (c) 2014-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\nvar runtime = (function (exports) {\n \"use strict\";\n\n var Op = Object.prototype;\n var hasOwn = Op.hasOwnProperty;\n var undefined; // More compressible than void 0.\n var $Symbol = typeof Symbol === \"function\" ? Symbol : {};\n var iteratorSymbol = $Symbol.iterator || \"@@iterator\";\n var asyncIteratorSymbol = $Symbol.asyncIterator || \"@@asyncIterator\";\n var toStringTagSymbol = $Symbol.toStringTag || \"@@toStringTag\";\n\n function define(obj, key, value) {\n Object.defineProperty(obj, key, {\n value: value,\n enumerable: true,\n configurable: true,\n writable: true\n });\n return obj[key];\n }\n try {\n // IE 8 has a broken Object.defineProperty that only works on DOM objects.\n define({}, \"\");\n } catch (err) {\n define = function(obj, key, value) {\n return obj[key] = value;\n };\n }\n\n function wrap(innerFn, outerFn, self, tryLocsList) {\n // If outerFn provided and outerFn.prototype is a Generator, then outerFn.prototype instanceof Generator.\n var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator;\n var generator = Object.create(protoGenerator.prototype);\n var context = new Context(tryLocsList || []);\n\n // The ._invoke method unifies the implementations of the .next,\n // .throw, and .return methods.\n generator._invoke = makeInvokeMethod(innerFn, self, context);\n\n return generator;\n }\n exports.wrap = wrap;\n\n // Try/catch helper to minimize deoptimizations. Returns a completion\n // record like context.tryEntries[i].completion. This interface could\n // have been (and was previously) designed to take a closure to be\n // invoked without arguments, but in all the cases we care about we\n // already have an existing method we want to call, so there's no need\n // to create a new function object. We can even get away with assuming\n // the method takes exactly one argument, since that happens to be true\n // in every case, so we don't have to touch the arguments object. The\n // only additional allocation required is the completion record, which\n // has a stable shape and so hopefully should be cheap to allocate.\n function tryCatch(fn, obj, arg) {\n try {\n return { type: \"normal\", arg: fn.call(obj, arg) };\n } catch (err) {\n return { type: \"throw\", arg: err };\n }\n }\n\n var GenStateSuspendedStart = \"suspendedStart\";\n var GenStateSuspendedYield = \"suspendedYield\";\n var GenStateExecuting = \"executing\";\n var GenStateCompleted = \"completed\";\n\n // Returning this object from the innerFn has the same effect as\n // breaking out of the dispatch switch statement.\n var ContinueSentinel = {};\n\n // Dummy constructor functions that we use as the .constructor and\n // .constructor.prototype properties for functions that return Generator\n // objects. For full spec compliance, you may wish to configure your\n // minifier not to mangle the names of these two functions.\n function Generator() {}\n function GeneratorFunction() {}\n function GeneratorFunctionPrototype() {}\n\n // This is a polyfill for %IteratorPrototype% for environments that\n // don't natively support it.\n var IteratorPrototype = {};\n IteratorPrototype[iteratorSymbol] = function () {\n return this;\n };\n\n var getProto = Object.getPrototypeOf;\n var NativeIteratorPrototype = getProto && getProto(getProto(values([])));\n if (NativeIteratorPrototype &&\n NativeIteratorPrototype !== Op &&\n hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) {\n // This environment has a native %IteratorPrototype%; use it instead\n // of the polyfill.\n IteratorPrototype = NativeIteratorPrototype;\n }\n\n var Gp = GeneratorFunctionPrototype.prototype =\n Generator.prototype = Object.create(IteratorPrototype);\n GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype;\n GeneratorFunctionPrototype.constructor = GeneratorFunction;\n GeneratorFunction.displayName = define(\n GeneratorFunctionPrototype,\n toStringTagSymbol,\n \"GeneratorFunction\"\n );\n\n // Helper for defining the .next, .throw, and .return methods of the\n // Iterator interface in terms of a single ._invoke method.\n function defineIteratorMethods(prototype) {\n [\"next\", \"throw\", \"return\"].forEach(function(method) {\n define(prototype, method, function(arg) {\n return this._invoke(method, arg);\n });\n });\n }\n\n exports.isGeneratorFunction = function(genFun) {\n var ctor = typeof genFun === \"function\" && genFun.constructor;\n return ctor\n ? ctor === GeneratorFunction ||\n // For the native GeneratorFunction constructor, the best we can\n // do is to check its .name property.\n (ctor.displayName || ctor.name) === \"GeneratorFunction\"\n : false;\n };\n\n exports.mark = function(genFun) {\n if (Object.setPrototypeOf) {\n Object.setPrototypeOf(genFun, GeneratorFunctionPrototype);\n } else {\n genFun.__proto__ = GeneratorFunctionPrototype;\n define(genFun, toStringTagSymbol, \"GeneratorFunction\");\n }\n genFun.prototype = Object.create(Gp);\n return genFun;\n };\n\n // Within the body of any async function, `await x` is transformed to\n // `yield regeneratorRuntime.awrap(x)`, so that the runtime can test\n // `hasOwn.call(value, \"__await\")` to determine if the yielded value is\n // meant to be awaited.\n exports.awrap = function(arg) {\n return { __await: arg };\n };\n\n function AsyncIterator(generator, PromiseImpl) {\n function invoke(method, arg, resolve, reject) {\n var record = tryCatch(generator[method], generator, arg);\n if (record.type === \"throw\") {\n reject(record.arg);\n } else {\n var result = record.arg;\n var value = result.value;\n if (value &&\n typeof value === \"object\" &&\n hasOwn.call(value, \"__await\")) {\n return PromiseImpl.resolve(value.__await).then(function(value) {\n invoke(\"next\", value, resolve, reject);\n }, function(err) {\n invoke(\"throw\", err, resolve, reject);\n });\n }\n\n return PromiseImpl.resolve(value).then(function(unwrapped) {\n // When a yielded Promise is resolved, its final value becomes\n // the .value of the Promise<{value,done}> result for the\n // current iteration.\n result.value = unwrapped;\n resolve(result);\n }, function(error) {\n // If a rejected Promise was yielded, throw the rejection back\n // into the async generator function so it can be handled there.\n return invoke(\"throw\", error, resolve, reject);\n });\n }\n }\n\n var previousPromise;\n\n function enqueue(method, arg) {\n function callInvokeWithMethodAndArg() {\n return new PromiseImpl(function(resolve, reject) {\n invoke(method, arg, resolve, reject);\n });\n }\n\n return previousPromise =\n // If enqueue has been called before, then we want to wait until\n // all previous Promises have been resolved before calling invoke,\n // so that results are always delivered in the correct order. If\n // enqueue has not been called before, then it is important to\n // call invoke immediately, without waiting on a callback to fire,\n // so that the async generator function has the opportunity to do\n // any necessary setup in a predictable way. This predictability\n // is why the Promise constructor synchronously invokes its\n // executor callback, and why async functions synchronously\n // execute code before the first await. Since we implement simple\n // async functions in terms of async generators, it is especially\n // important to get this right, even though it requires care.\n previousPromise ? previousPromise.then(\n callInvokeWithMethodAndArg,\n // Avoid propagating failures to Promises returned by later\n // invocations of the iterator.\n callInvokeWithMethodAndArg\n ) : callInvokeWithMethodAndArg();\n }\n\n // Define the unified helper method that is used to implement .next,\n // .throw, and .return (see defineIteratorMethods).\n this._invoke = enqueue;\n }\n\n defineIteratorMethods(AsyncIterator.prototype);\n AsyncIterator.prototype[asyncIteratorSymbol] = function () {\n return this;\n };\n exports.AsyncIterator = AsyncIterator;\n\n // Note that simple async functions are implemented on top of\n // AsyncIterator objects; they just return a Promise for the value of\n // the final result produced by the iterator.\n exports.async = function(innerFn, outerFn, self, tryLocsList, PromiseImpl) {\n if (PromiseImpl === void 0) PromiseImpl = Promise;\n\n var iter = new AsyncIterator(\n wrap(innerFn, outerFn, self, tryLocsList),\n PromiseImpl\n );\n\n return exports.isGeneratorFunction(outerFn)\n ? iter // If outerFn is a generator, return the full iterator.\n : iter.next().then(function(result) {\n return result.done ? result.value : iter.next();\n });\n };\n\n function makeInvokeMethod(innerFn, self, context) {\n var state = GenStateSuspendedStart;\n\n return function invoke(method, arg) {\n if (state === GenStateExecuting) {\n throw new Error(\"Generator is already running\");\n }\n\n if (state === GenStateCompleted) {\n if (method === \"throw\") {\n throw arg;\n }\n\n // Be forgiving, per 25.3.3.3.3 of the spec:\n // https://people.mozilla.org/~jorendorff/es6-draft.html#sec-generatorresume\n return doneResult();\n }\n\n context.method = method;\n context.arg = arg;\n\n while (true) {\n var delegate = context.delegate;\n if (delegate) {\n var delegateResult = maybeInvokeDelegate(delegate, context);\n if (delegateResult) {\n if (delegateResult === ContinueSentinel) continue;\n return delegateResult;\n }\n }\n\n if (context.method === \"next\") {\n // Setting context._sent for legacy support of Babel's\n // function.sent implementation.\n context.sent = context._sent = context.arg;\n\n } else if (context.method === \"throw\") {\n if (state === GenStateSuspendedStart) {\n state = GenStateCompleted;\n throw context.arg;\n }\n\n context.dispatchException(context.arg);\n\n } else if (context.method === \"return\") {\n context.abrupt(\"return\", context.arg);\n }\n\n state = GenStateExecuting;\n\n var record = tryCatch(innerFn, self, context);\n if (record.type === \"normal\") {\n // If an exception is thrown from innerFn, we leave state ===\n // GenStateExecuting and loop back for another invocation.\n state = context.done\n ? GenStateCompleted\n : GenStateSuspendedYield;\n\n if (record.arg === ContinueSentinel) {\n continue;\n }\n\n return {\n value: record.arg,\n done: context.done\n };\n\n } else if (record.type === \"throw\") {\n state = GenStateCompleted;\n // Dispatch the exception by looping back around to the\n // context.dispatchException(context.arg) call above.\n context.method = \"throw\";\n context.arg = record.arg;\n }\n }\n };\n }\n\n // Call delegate.iterator[context.method](context.arg) and handle the\n // result, either by returning a { value, done } result from the\n // delegate iterator, or by modifying context.method and context.arg,\n // setting context.delegate to null, and returning the ContinueSentinel.\n function maybeInvokeDelegate(delegate, context) {\n var method = delegate.iterator[context.method];\n if (method === undefined) {\n // A .throw or .return when the delegate iterator has no .throw\n // method always terminates the yield* loop.\n context.delegate = null;\n\n if (context.method === \"throw\") {\n // Note: [\"return\"] must be used for ES3 parsing compatibility.\n if (delegate.iterator[\"return\"]) {\n // If the delegate iterator has a return method, give it a\n // chance to clean up.\n context.method = \"return\";\n context.arg = undefined;\n maybeInvokeDelegate(delegate, context);\n\n if (context.method === \"throw\") {\n // If maybeInvokeDelegate(context) changed context.method from\n // \"return\" to \"throw\", let that override the TypeError below.\n return ContinueSentinel;\n }\n }\n\n context.method = \"throw\";\n context.arg = new TypeError(\n \"The iterator does not provide a 'throw' method\");\n }\n\n return ContinueSentinel;\n }\n\n var record = tryCatch(method, delegate.iterator, context.arg);\n\n if (record.type === \"throw\") {\n context.method = \"throw\";\n context.arg = record.arg;\n context.delegate = null;\n return ContinueSentinel;\n }\n\n var info = record.arg;\n\n if (! info) {\n context.method = \"throw\";\n context.arg = new TypeError(\"iterator result is not an object\");\n context.delegate = null;\n return ContinueSentinel;\n }\n\n if (info.done) {\n // Assign the result of the finished delegate to the temporary\n // variable specified by delegate.resultName (see delegateYield).\n context[delegate.resultName] = info.value;\n\n // Resume execution at the desired location (see delegateYield).\n context.next = delegate.nextLoc;\n\n // If context.method was \"throw\" but the delegate handled the\n // exception, let the outer generator proceed normally. If\n // context.method was \"next\", forget context.arg since it has been\n // \"consumed\" by the delegate iterator. If context.method was\n // \"return\", allow the original .return call to continue in the\n // outer generator.\n if (context.method !== \"return\") {\n context.method = \"next\";\n context.arg = undefined;\n }\n\n } else {\n // Re-yield the result returned by the delegate method.\n return info;\n }\n\n // The delegate iterator is finished, so forget it and continue with\n // the outer generator.\n context.delegate = null;\n return ContinueSentinel;\n }\n\n // Define Generator.prototype.{next,throw,return} in terms of the\n // unified ._invoke helper method.\n defineIteratorMethods(Gp);\n\n define(Gp, toStringTagSymbol, \"Generator\");\n\n // A Generator should always return itself as the iterator object when the\n // @@iterator function is called on it. Some browsers' implementations of the\n // iterator prototype chain incorrectly implement this, causing the Generator\n // object to not be returned from this call. This ensures that doesn't happen.\n // See https://github.com/facebook/regenerator/issues/274 for more details.\n Gp[iteratorSymbol] = function() {\n return this;\n };\n\n Gp.toString = function() {\n return \"[object Generator]\";\n };\n\n function pushTryEntry(locs) {\n var entry = { tryLoc: locs[0] };\n\n if (1 in locs) {\n entry.catchLoc = locs[1];\n }\n\n if (2 in locs) {\n entry.finallyLoc = locs[2];\n entry.afterLoc = locs[3];\n }\n\n this.tryEntries.push(entry);\n }\n\n function resetTryEntry(entry) {\n var record = entry.completion || {};\n record.type = \"normal\";\n delete record.arg;\n entry.completion = record;\n }\n\n function Context(tryLocsList) {\n // The root entry object (effectively a try statement without a catch\n // or a finally block) gives us a place to store values thrown from\n // locations where there is no enclosing try statement.\n this.tryEntries = [{ tryLoc: \"root\" }];\n tryLocsList.forEach(pushTryEntry, this);\n this.reset(true);\n }\n\n exports.keys = function(object) {\n var keys = [];\n for (var key in object) {\n keys.push(key);\n }\n keys.reverse();\n\n // Rather than returning an object with a next method, we keep\n // things simple and return the next function itself.\n return function next() {\n while (keys.length) {\n var key = keys.pop();\n if (key in object) {\n next.value = key;\n next.done = false;\n return next;\n }\n }\n\n // To avoid creating an additional object, we just hang the .value\n // and .done properties off the next function object itself. This\n // also ensures that the minifier will not anonymize the function.\n next.done = true;\n return next;\n };\n };\n\n function values(iterable) {\n if (iterable) {\n var iteratorMethod = iterable[iteratorSymbol];\n if (iteratorMethod) {\n return iteratorMethod.call(iterable);\n }\n\n if (typeof iterable.next === \"function\") {\n return iterable;\n }\n\n if (!isNaN(iterable.length)) {\n var i = -1, next = function next() {\n while (++i < iterable.length) {\n if (hasOwn.call(iterable, i)) {\n next.value = iterable[i];\n next.done = false;\n return next;\n }\n }\n\n next.value = undefined;\n next.done = true;\n\n return next;\n };\n\n return next.next = next;\n }\n }\n\n // Return an iterator with no values.\n return { next: doneResult };\n }\n exports.values = values;\n\n function doneResult() {\n return { value: undefined, done: true };\n }\n\n Context.prototype = {\n constructor: Context,\n\n reset: function(skipTempReset) {\n this.prev = 0;\n this.next = 0;\n // Resetting context._sent for legacy support of Babel's\n // function.sent implementation.\n this.sent = this._sent = undefined;\n this.done = false;\n this.delegate = null;\n\n this.method = \"next\";\n this.arg = undefined;\n\n this.tryEntries.forEach(resetTryEntry);\n\n if (!skipTempReset) {\n for (var name in this) {\n // Not sure about the optimal order of these conditions:\n if (name.charAt(0) === \"t\" &&\n hasOwn.call(this, name) &&\n !isNaN(+name.slice(1))) {\n this[name] = undefined;\n }\n }\n }\n },\n\n stop: function() {\n this.done = true;\n\n var rootEntry = this.tryEntries[0];\n var rootRecord = rootEntry.completion;\n if (rootRecord.type === \"throw\") {\n throw rootRecord.arg;\n }\n\n return this.rval;\n },\n\n dispatchException: function(exception) {\n if (this.done) {\n throw exception;\n }\n\n var context = this;\n function handle(loc, caught) {\n record.type = \"throw\";\n record.arg = exception;\n context.next = loc;\n\n if (caught) {\n // If the dispatched exception was caught by a catch block,\n // then let that catch block handle the exception normally.\n context.method = \"next\";\n context.arg = undefined;\n }\n\n return !! caught;\n }\n\n for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n var entry = this.tryEntries[i];\n var record = entry.completion;\n\n if (entry.tryLoc === \"root\") {\n // Exception thrown outside of any try block that could handle\n // it, so set the completion value of the entire function to\n // throw the exception.\n return handle(\"end\");\n }\n\n if (entry.tryLoc <= this.prev) {\n var hasCatch = hasOwn.call(entry, \"catchLoc\");\n var hasFinally = hasOwn.call(entry, \"finallyLoc\");\n\n if (hasCatch && hasFinally) {\n if (this.prev < entry.catchLoc) {\n return handle(entry.catchLoc, true);\n } else if (this.prev < entry.finallyLoc) {\n return handle(entry.finallyLoc);\n }\n\n } else if (hasCatch) {\n if (this.prev < entry.catchLoc) {\n return handle(entry.catchLoc, true);\n }\n\n } else if (hasFinally) {\n if (this.prev < entry.finallyLoc) {\n return handle(entry.finallyLoc);\n }\n\n } else {\n throw new Error(\"try statement without catch or finally\");\n }\n }\n }\n },\n\n abrupt: function(type, arg) {\n for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n var entry = this.tryEntries[i];\n if (entry.tryLoc <= this.prev &&\n hasOwn.call(entry, \"finallyLoc\") &&\n this.prev < entry.finallyLoc) {\n var finallyEntry = entry;\n break;\n }\n }\n\n if (finallyEntry &&\n (type === \"break\" ||\n type === \"continue\") &&\n finallyEntry.tryLoc <= arg &&\n arg <= finallyEntry.finallyLoc) {\n // Ignore the finally entry if control is not jumping to a\n // location outside the try/catch block.\n finallyEntry = null;\n }\n\n var record = finallyEntry ? finallyEntry.completion : {};\n record.type = type;\n record.arg = arg;\n\n if (finallyEntry) {\n this.method = \"next\";\n this.next = finallyEntry.finallyLoc;\n return ContinueSentinel;\n }\n\n return this.complete(record);\n },\n\n complete: function(record, afterLoc) {\n if (record.type === \"throw\") {\n throw record.arg;\n }\n\n if (record.type === \"break\" ||\n record.type === \"continue\") {\n this.next = record.arg;\n } else if (record.type === \"return\") {\n this.rval = this.arg = record.arg;\n this.method = \"return\";\n this.next = \"end\";\n } else if (record.type === \"normal\" && afterLoc) {\n this.next = afterLoc;\n }\n\n return ContinueSentinel;\n },\n\n finish: function(finallyLoc) {\n for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n var entry = this.tryEntries[i];\n if (entry.finallyLoc === finallyLoc) {\n this.complete(entry.completion, entry.afterLoc);\n resetTryEntry(entry);\n return ContinueSentinel;\n }\n }\n },\n\n \"catch\": function(tryLoc) {\n for (var i = this.tryEntries.length - 1; i >= 0; --i) {\n var entry = this.tryEntries[i];\n if (entry.tryLoc === tryLoc) {\n var record = entry.completion;\n if (record.type === \"throw\") {\n var thrown = record.arg;\n resetTryEntry(entry);\n }\n return thrown;\n }\n }\n\n // The context.catch method must only be called with a location\n // argument that corresponds to a known catch block.\n throw new Error(\"illegal catch attempt\");\n },\n\n delegateYield: function(iterable, resultName, nextLoc) {\n this.delegate = {\n iterator: values(iterable),\n resultName: resultName,\n nextLoc: nextLoc\n };\n\n if (this.method === \"next\") {\n // Deliberately forget the last sent value so that we don't\n // accidentally pass it on to the delegate.\n this.arg = undefined;\n }\n\n return ContinueSentinel;\n }\n };\n\n // Regardless of whether this script is executing as a CommonJS module\n // or not, return the runtime object so that we can declare the variable\n // regeneratorRuntime in the outer scope, which allows this module to be\n // injected easily by `bin/regenerator --include-runtime script.js`.\n return exports;\n\n}(\n // If this script is executing as a CommonJS module, use module.exports\n // as the regeneratorRuntime namespace. Otherwise create a new empty\n // object. Either way, the resulting object will be used to initialize\n // the regeneratorRuntime variable at the top of this file.\n typeof module === \"object\" ? module.exports : {}\n));\n\ntry {\n regeneratorRuntime = runtime;\n} catch (accidentalStrictMode) {\n // This module should not be running in strict mode, so the above\n // assignment should always work unless something is misconfigured. Just\n // in case runtime.js accidentally runs in strict mode, we can escape\n // strict mode using a global Function call. This could conceivably fail\n // if a Content Security Policy forbids using Function, but in that case\n // the proper solution is to fix the accidental strict mode problem. If\n // you've misconfigured your bundler to force strict mode and applied a\n // CSP to forbid Function, and you're not willing to fix either of those\n // problems, please detail your unique predicament in a GitHub issue.\n Function(\"r\", \"regeneratorRuntime = r\")(runtime);\n}\n","require('../modules/es7.global');\nmodule.exports = require('../modules/_core').global;\n","// https://github.com/tc39/proposal-global\nvar $export = require('./_export');\n\n$export($export.G, { global: require('./_global') });\n","var global = require('./_global');\nvar core = require('./_core');\nvar ctx = require('./_ctx');\nvar hide = require('./_hide');\nvar has = require('./_has');\nvar PROTOTYPE = 'prototype';\n\nvar $export = function (type, name, source) {\n var IS_FORCED = type & $export.F;\n var IS_GLOBAL = type & $export.G;\n var IS_STATIC = type & $export.S;\n var IS_PROTO = type & $export.P;\n var IS_BIND = type & $export.B;\n var IS_WRAP = type & $export.W;\n var exports = IS_GLOBAL ? core : core[name] || (core[name] = {});\n var expProto = exports[PROTOTYPE];\n var target = IS_GLOBAL ? global : IS_STATIC ? global[name] : (global[name] || {})[PROTOTYPE];\n var key, own, out;\n if (IS_GLOBAL) source = name;\n for (key in source) {\n // contains in native\n own = !IS_FORCED && target && target[key] !== undefined;\n if (own && has(exports, key)) continue;\n // export native or passed\n out = own ? target[key] : source[key];\n // prevent global pollution for namespaces\n exports[key] = IS_GLOBAL && typeof target[key] != 'function' ? source[key]\n // bind timers to global for call from export context\n : IS_BIND && own ? ctx(out, global)\n // wrap global constructors for prevent change them in library\n : IS_WRAP && target[key] == out ? (function (C) {\n var F = function (a, b, c) {\n if (this instanceof C) {\n switch (arguments.length) {\n case 0: return new C();\n case 1: return new C(a);\n case 2: return new C(a, b);\n } return new C(a, b, c);\n } return C.apply(this, arguments);\n };\n F[PROTOTYPE] = C[PROTOTYPE];\n return F;\n // make static versions for prototype methods\n })(out) : IS_PROTO && typeof out == 'function' ? ctx(Function.call, out) : out;\n // export proto methods to core.%CONSTRUCTOR%.methods.%NAME%\n if (IS_PROTO) {\n (exports.virtual || (exports.virtual = {}))[key] = out;\n // export proto methods to core.%CONSTRUCTOR%.prototype.%NAME%\n if (type & $export.R && expProto && !expProto[key]) hide(expProto, key, out);\n }\n }\n};\n// type bitmap\n$export.F = 1; // forced\n$export.G = 2; // global\n$export.S = 4; // static\n$export.P = 8; // proto\n$export.B = 16; // bind\n$export.W = 32; // wrap\n$export.U = 64; // safe\n$export.R = 128; // real proto method for `library`\nmodule.exports = $export;\n","// optional / simple context binding\nvar aFunction = require('./_a-function');\nmodule.exports = function (fn, that, length) {\n aFunction(fn);\n if (that === undefined) return fn;\n switch (length) {\n case 1: return function (a) {\n return fn.call(that, a);\n };\n case 2: return function (a, b) {\n return fn.call(that, a, b);\n };\n case 3: return function (a, b, c) {\n return fn.call(that, a, b, c);\n };\n }\n return function (/* ...args */) {\n return fn.apply(that, arguments);\n };\n};\n","module.exports = function (it) {\n if (typeof it != 'function') throw TypeError(it + ' is not a function!');\n return it;\n};\n","var dP = require('./_object-dp');\nvar createDesc = require('./_property-desc');\nmodule.exports = require('./_descriptors') ? function (object, key, value) {\n return dP.f(object, key, createDesc(1, value));\n} : function (object, key, value) {\n object[key] = value;\n return object;\n};\n","var anObject = require('./_an-object');\nvar IE8_DOM_DEFINE = require('./_ie8-dom-define');\nvar toPrimitive = require('./_to-primitive');\nvar dP = Object.defineProperty;\n\nexports.f = require('./_descriptors') ? Object.defineProperty : function defineProperty(O, P, Attributes) {\n anObject(O);\n P = toPrimitive(P, true);\n anObject(Attributes);\n if (IE8_DOM_DEFINE) try {\n return dP(O, P, Attributes);\n } catch (e) { /* empty */ }\n if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported!');\n if ('value' in Attributes) O[P] = Attributes.value;\n return O;\n};\n","var isObject = require('./_is-object');\nmodule.exports = function (it) {\n if (!isObject(it)) throw TypeError(it + ' is not an object!');\n return it;\n};\n","module.exports = !require('./_descriptors') && !require('./_fails')(function () {\n return Object.defineProperty(require('./_dom-create')('div'), 'a', { get: function () { return 7; } }).a != 7;\n});\n","var isObject = require('./_is-object');\nvar document = require('./_global').document;\n// typeof document.createElement is 'object' in old IE\nvar is = isObject(document) && isObject(document.createElement);\nmodule.exports = function (it) {\n return is ? document.createElement(it) : {};\n};\n","// 7.1.1 ToPrimitive(input [, PreferredType])\nvar isObject = require('./_is-object');\n// instead of the ES6 spec version, we didn't implement @@toPrimitive case\n// and the second argument - flag - preferred type is a string\nmodule.exports = function (it, S) {\n if (!isObject(it)) return it;\n var fn, val;\n if (S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val;\n if (typeof (fn = it.valueOf) == 'function' && !isObject(val = fn.call(it))) return val;\n if (!S && typeof (fn = it.toString) == 'function' && !isObject(val = fn.call(it))) return val;\n throw TypeError(\"Can't convert object to primitive value\");\n};\n","module.exports = function (bitmap, value) {\n return {\n enumerable: !(bitmap & 1),\n configurable: !(bitmap & 2),\n writable: !(bitmap & 4),\n value: value\n };\n};\n","var hasOwnProperty = {}.hasOwnProperty;\nmodule.exports = function (it, key) {\n return hasOwnProperty.call(it, key);\n};\n","module.exports = function(module) {\n\tif (!module.webpackPolyfill) {\n\t\tmodule.deprecate = function() {};\n\t\tmodule.paths = [];\n\t\t// module.parent = undefined by default\n\t\tif (!module.children) module.children = [];\n\t\tObject.defineProperty(module, \"loaded\", {\n\t\t\tenumerable: true,\n\t\t\tget: function() {\n\t\t\t\treturn module.l;\n\t\t\t}\n\t\t});\n\t\tObject.defineProperty(module, \"id\", {\n\t\t\tenumerable: true,\n\t\t\tget: function() {\n\t\t\t\treturn module.i;\n\t\t\t}\n\t\t});\n\t\tmodule.webpackPolyfill = 1;\n\t}\n\treturn module;\n};\n","/*! Hammer.JS - v2.0.7 - 2016-04-22\n * http://hammerjs.github.io/\n *\n * Copyright (c) 2016 Jorik Tangelder;\n * Licensed under the MIT license */\n(function(window, document, exportName, undefined) {\n 'use strict';\n\nvar VENDOR_PREFIXES = ['', 'webkit', 'Moz', 'MS', 'ms', 'o'];\nvar TEST_ELEMENT = document.createElement('div');\n\nvar TYPE_FUNCTION = 'function';\n\nvar round = Math.round;\nvar abs = Math.abs;\nvar now = Date.now;\n\n/**\n * set a timeout with a given scope\n * @param {Function} fn\n * @param {Number} timeout\n * @param {Object} context\n * @returns {number}\n */\nfunction setTimeoutContext(fn, timeout, context) {\n return setTimeout(bindFn(fn, context), timeout);\n}\n\n/**\n * if the argument is an array, we want to execute the fn on each entry\n * if it aint an array we don't want to do a thing.\n * this is used by all the methods that accept a single and array argument.\n * @param {*|Array} arg\n * @param {String} fn\n * @param {Object} [context]\n * @returns {Boolean}\n */\nfunction invokeArrayArg(arg, fn, context) {\n if (Array.isArray(arg)) {\n each(arg, context[fn], context);\n return true;\n }\n return false;\n}\n\n/**\n * walk objects and arrays\n * @param {Object} obj\n * @param {Function} iterator\n * @param {Object} context\n */\nfunction each(obj, iterator, context) {\n var i;\n\n if (!obj) {\n return;\n }\n\n if (obj.forEach) {\n obj.forEach(iterator, context);\n } else if (obj.length !== undefined) {\n i = 0;\n while (i < obj.length) {\n iterator.call(context, obj[i], i, obj);\n i++;\n }\n } else {\n for (i in obj) {\n obj.hasOwnProperty(i) && iterator.call(context, obj[i], i, obj);\n }\n }\n}\n\n/**\n * wrap a method with a deprecation warning and stack trace\n * @param {Function} method\n * @param {String} name\n * @param {String} message\n * @returns {Function} A new function wrapping the supplied method.\n */\nfunction deprecate(method, name, message) {\n var deprecationMessage = 'DEPRECATED METHOD: ' + name + '\\n' + message + ' AT \\n';\n return function() {\n var e = new Error('get-stack-trace');\n var stack = e && e.stack ? e.stack.replace(/^[^\\(]+?[\\n$]/gm, '')\n .replace(/^\\s+at\\s+/gm, '')\n .replace(/^Object.