' + 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 () {\n return arguments;\n }()) ? baseIsArguments : function (value) {\n return isObjectLike(value) && hasOwnProperty.call(value, 'callee') && !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 || 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) && (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' || 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 || 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' && 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' || 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 && 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' || !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' || 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 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 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 = baseTrim(value);\n var isBinary = reIsBinary.test(value);\n return isBinary || reIsOctal.test(value) ? freeParseInt(value.slice(2), isBinary ? 2 : 8) : 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 ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER) : 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 var index = -1;\n var length = sources.length;\n var guard = length > 2 ? sources[2] : undefined;\n if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n length = 1;\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 while (++propsIndex < propsLength) {\n var key = props[propsIndex];\n var value = object[key];\n if (value === undefined || eq(value, objectProto[key]) && !hasOwnProperty.call(object, key)) {\n object[key] = source[key];\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 ? object : 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 ? object : 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 && typeof value.toString != 'function') {\n value = nativeObjectToString.call(value);\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 && typeof value.toString != 'function') {\n value = nativeObjectToString.call(value);\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 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 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 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 iteratee = getIteratee(iteratee, 4);\n if (accumulator == null) {\n var Ctor = object && object.constructor;\n if (isArrLike) {\n accumulator = isArr ? new Ctor() : [];\n } else if (isObject(object)) {\n accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};\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 } 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 } 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 var length = string.length;\n position = position === undefined ? length : baseClamp(toInteger(position), 0, length);\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) ? string.replace(reUnescapedHtml, escapeHtmlChar) : string;\n }\n\n /**\n * Escapes the `RegExp` special characters \"^\", \"$\", \"\\\", \".\", \"*\", \"+\",\n * \"?\", \"(\", \")\", \"[\", \"]\", \"{\", \"}\", and \"|\" in `string`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to escape.\n * @returns {string} Returns the escaped string.\n * @example\n *\n * _.escapeRegExp('[lodash](https://lodash.com/)');\n * // => '\\[lodash\\]\\(https://lodash\\.com/\\)'\n */\n function escapeRegExp(string) {\n string = toString(string);\n return string && reHasRegExpChar.test(string) ? string.replace(reRegExpChar, '\\\\$&') : 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 var strLength = length ? stringSize(string) : 0;\n if (!length || strLength >= length) {\n return string;\n }\n var mid = (length - strLength) / 2;\n return createPadding(nativeFloor(mid), chars) + string + createPadding(nativeCeil(mid), chars);\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 var strLength = length ? stringSize(string) : 0;\n return length && strLength < length ? string + createPadding(length - strLength, chars) : 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 var strLength = length ? stringSize(string) : 0;\n return length && strLength < length ? createPadding(length - strLength, chars) + string : 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 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 && (typeof separator == 'string' || separator != null && !isRegExp(separator))) {\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 ? 0 : baseClamp(toInteger(position), 0, string.length);\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};","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.default = function (val) {\n // Replace closing\n var re = /<\\/\\W*script/gi;\n return val.replace(re, '(/script');\n};","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.default = {\n authenticityToken: function () {\n var token = document.querySelector('meta[name=\"csrf-token\"]');\n if (token && token instanceof window.HTMLMetaElement) {\n return token.content;\n }\n return null;\n },\n authenticityHeaders: function (otherHeaders) {\n if (otherHeaders === void 0) {\n otherHeaders = {};\n }\n return Object.assign(otherHeaders, {\n 'X-CSRF-Token': this.authenticityToken(),\n 'X-Requested-With': 'XMLHttpRequest'\n });\n }\n};","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n/**\n * Get the context, be it window or global\n * @returns {boolean|Window|*|context}\n */\nfunction context() {\n return typeof window !== 'undefined' && window || typeof global !== 'undefined' && global || this;\n}\nexports.default = context;","/**\n * Copyright (c) 2013-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\n'use strict';\n\nvar ReactPropTypesSecret = require('./lib/ReactPropTypesSecret');\nfunction emptyFunction() {}\nfunction emptyFunctionWithReset() {}\nemptyFunctionWithReset.resetWarningCache = emptyFunction;\nmodule.exports = function () {\n function shim(props, propName, componentName, location, propFullName, secret) {\n if (secret === ReactPropTypesSecret) {\n // It is still safe when called from React.\n return;\n }\n var err = new Error('Calling PropTypes validators directly is not supported by the `prop-types` package. ' + 'Use PropTypes.checkPropTypes() to call them. ' + 'Read more at http://fb.me/use-check-prop-types');\n err.name = 'Invariant Violation';\n throw err;\n }\n ;\n shim.isRequired = shim;\n function getShim() {\n return shim;\n }\n ;\n // Important!\n // Keep this list in sync with production version in `./factoryWithTypeCheckers.js`.\n var ReactPropTypes = {\n array: shim,\n bigint: shim,\n bool: shim,\n func: shim,\n number: shim,\n object: shim,\n string: shim,\n symbol: shim,\n any: shim,\n arrayOf: getShim,\n element: shim,\n elementType: shim,\n instanceOf: getShim,\n node: shim,\n objectOf: getShim,\n oneOf: getShim,\n oneOfType: getShim,\n shape: getShim,\n exact: getShim,\n checkPropTypes: emptyFunctionWithReset,\n resetWarningCache: emptyFunction\n };\n ReactPropTypes.PropTypes = ReactPropTypes;\n return ReactPropTypes;\n};","/**\n * Copyright (c) 2013-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\n'use strict';\n\nvar ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';\nmodule.exports = ReactPropTypesSecret;","/** @license React v16.13.1\n * react-is.production.min.js\n *\n * Copyright (c) Facebook, Inc. and its affiliates.\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\n'use strict';\n\nvar b = \"function\" === typeof Symbol && Symbol.for,\n c = b ? Symbol.for(\"react.element\") : 60103,\n d = b ? Symbol.for(\"react.portal\") : 60106,\n e = b ? Symbol.for(\"react.fragment\") : 60107,\n f = b ? Symbol.for(\"react.strict_mode\") : 60108,\n g = b ? Symbol.for(\"react.profiler\") : 60114,\n h = b ? Symbol.for(\"react.provider\") : 60109,\n k = b ? Symbol.for(\"react.context\") : 60110,\n l = b ? Symbol.for(\"react.async_mode\") : 60111,\n m = b ? Symbol.for(\"react.concurrent_mode\") : 60111,\n n = b ? Symbol.for(\"react.forward_ref\") : 60112,\n p = b ? Symbol.for(\"react.suspense\") : 60113,\n q = b ? Symbol.for(\"react.suspense_list\") : 60120,\n r = b ? Symbol.for(\"react.memo\") : 60115,\n t = b ? Symbol.for(\"react.lazy\") : 60116,\n v = b ? Symbol.for(\"react.block\") : 60121,\n w = b ? Symbol.for(\"react.fundamental\") : 60117,\n x = b ? Symbol.for(\"react.responder\") : 60118,\n y = b ? Symbol.for(\"react.scope\") : 60119;\nfunction z(a) {\n if (\"object\" === typeof a && null !== a) {\n var u = a.$$typeof;\n switch (u) {\n case c:\n switch (a = a.type, a) {\n case l:\n case m:\n case e:\n case g:\n case f:\n case p:\n return a;\n default:\n switch (a = a && a.$$typeof, a) {\n case k:\n case n:\n case t:\n case r:\n case h:\n return a;\n default:\n return u;\n }\n }\n case d:\n return u;\n }\n }\n}\nfunction A(a) {\n return z(a) === m;\n}\nexports.AsyncMode = l;\nexports.ConcurrentMode = m;\nexports.ContextConsumer = k;\nexports.ContextProvider = h;\nexports.Element = c;\nexports.ForwardRef = n;\nexports.Fragment = e;\nexports.Lazy = t;\nexports.Memo = r;\nexports.Portal = d;\nexports.Profiler = g;\nexports.StrictMode = f;\nexports.Suspense = p;\nexports.isAsyncMode = function (a) {\n return A(a) || z(a) === l;\n};\nexports.isConcurrentMode = A;\nexports.isContextConsumer = function (a) {\n return z(a) === k;\n};\nexports.isContextProvider = function (a) {\n return z(a) === h;\n};\nexports.isElement = function (a) {\n return \"object\" === typeof a && null !== a && a.$$typeof === c;\n};\nexports.isForwardRef = function (a) {\n return z(a) === n;\n};\nexports.isFragment = function (a) {\n return z(a) === e;\n};\nexports.isLazy = function (a) {\n return z(a) === t;\n};\nexports.isMemo = function (a) {\n return z(a) === r;\n};\nexports.isPortal = function (a) {\n return z(a) === d;\n};\nexports.isProfiler = function (a) {\n return z(a) === g;\n};\nexports.isStrictMode = function (a) {\n return z(a) === f;\n};\nexports.isSuspense = function (a) {\n return z(a) === p;\n};\nexports.isValidElementType = function (a) {\n return \"string\" === typeof a || \"function\" === typeof a || a === e || a === m || a === g || a === f || a === p || a === q || \"object\" === typeof a && null !== a && (a.$$typeof === t || a.$$typeof === r || a.$$typeof === h || a.$$typeof === k || a.$$typeof === n || a.$$typeof === w || a.$$typeof === x || a.$$typeof === y || a.$$typeof === v);\n};\nexports.typeOf = z;","\"use strict\";\n\nfunction __export(m) {\n for (var p in m) if (!exports.hasOwnProperty(p)) exports[p] = m[p];\n}\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n__export(require(\"./interfaces\"));\n__export(require(\"./factories\"));","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar DragDropManagerImpl_1 = require(\"./DragDropManagerImpl\");\nfunction createDragDropManager(backend, context, debugMode) {\n return new DragDropManagerImpl_1.default(backend, context, debugMode);\n}\nexports.createDragDropManager = createDragDropManager;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar redux_1 = require(\"redux\");\nvar reducers_1 = require(\"./reducers\");\nvar dragDrop_1 = require(\"./actions/dragDrop\");\nvar DragDropMonitorImpl_1 = require(\"./DragDropMonitorImpl\");\nvar HandlerRegistryImpl_1 = require(\"./HandlerRegistryImpl\");\nfunction makeStoreInstance(debugMode) {\n // TODO: if we ever make a react-native version of this,\n // we'll need to consider how to pull off dev-tooling\n var reduxDevTools = typeof window !== 'undefined' && window.__REDUX_DEVTOOLS_EXTENSION__;\n return redux_1.createStore(reducers_1.default, debugMode && reduxDevTools && reduxDevTools({\n name: 'dnd-core',\n instanceId: 'dnd-core'\n }));\n}\nvar DragDropManagerImpl = /** @class */function () {\n function DragDropManagerImpl(createBackend, context, debugMode) {\n var _this = this;\n if (context === void 0) {\n context = {};\n }\n if (debugMode === void 0) {\n debugMode = false;\n }\n this.context = context;\n this.isSetUp = false;\n this.handleRefCountChange = function () {\n var shouldSetUp = _this.store.getState().refCount > 0;\n if (shouldSetUp && !_this.isSetUp) {\n _this.backend.setup();\n _this.isSetUp = true;\n } else if (!shouldSetUp && _this.isSetUp) {\n _this.backend.teardown();\n _this.isSetUp = false;\n }\n };\n var store = makeStoreInstance(debugMode);\n this.store = store;\n this.monitor = new DragDropMonitorImpl_1.default(store, new HandlerRegistryImpl_1.default(store));\n this.backend = createBackend(this);\n store.subscribe(this.handleRefCountChange);\n }\n DragDropManagerImpl.prototype.getContext = function () {\n return this.context;\n };\n DragDropManagerImpl.prototype.getMonitor = function () {\n return this.monitor;\n };\n DragDropManagerImpl.prototype.getBackend = function () {\n return this.backend;\n };\n DragDropManagerImpl.prototype.getRegistry = function () {\n return this.monitor.registry;\n };\n DragDropManagerImpl.prototype.getActions = function () {\n var manager = this;\n var dispatch = this.store.dispatch;\n function bindActionCreator(actionCreator) {\n return function () {\n var args = [];\n for (var _i = 0; _i < arguments.length; _i++) {\n args[_i] = arguments[_i];\n }\n var action = actionCreator.apply(manager, args);\n if (typeof action !== 'undefined') {\n dispatch(action);\n }\n };\n }\n var actions = dragDrop_1.default(this);\n return Object.keys(actions).reduce(function (boundActions, key) {\n var action = actions[key];\n boundActions[key] = bindActionCreator(action);\n return boundActions;\n }, {});\n };\n DragDropManagerImpl.prototype.dispatch = function (action) {\n this.store.dispatch(action);\n };\n return DragDropManagerImpl;\n}();\nexports.default = DragDropManagerImpl;","\"use strict\";\n\nvar __assign = this && this.__assign || function () {\n __assign = Object.assign || function (t) {\n for (var s, i = 1, n = arguments.length; i < n; i++) {\n s = arguments[i];\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\n }\n return t;\n };\n return __assign.apply(this, arguments);\n};\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar dragOffset_1 = require(\"./dragOffset\");\nvar dragOperation_1 = require(\"./dragOperation\");\nvar refCount_1 = require(\"./refCount\");\nvar dirtyHandlerIds_1 = require(\"./dirtyHandlerIds\");\nvar stateId_1 = require(\"./stateId\");\nvar discount_lodash_1 = require(\"../utils/discount_lodash\");\nfunction reduce(state, action) {\n if (state === void 0) {\n state = {};\n }\n return {\n dirtyHandlerIds: dirtyHandlerIds_1.default(state.dirtyHandlerIds, {\n type: action.type,\n payload: __assign({}, action.payload, {\n prevTargetIds: discount_lodash_1.get(state, 'dragOperation.targetIds', [])\n })\n }),\n dragOffset: dragOffset_1.default(state.dragOffset, action),\n refCount: refCount_1.default(state.refCount, action),\n dragOperation: dragOperation_1.default(state.dragOperation, action),\n stateId: stateId_1.default(state.stateId)\n };\n}\nexports.default = reduce;","\"use strict\";\n\nvar __assign = this && this.__assign || function () {\n __assign = Object.assign || function (t) {\n for (var s, i = 1, n = arguments.length; i < n; i++) {\n s = arguments[i];\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\n }\n return t;\n };\n return __assign.apply(this, arguments);\n};\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar dragDrop_1 = require(\"../actions/dragDrop\");\nvar equality_1 = require(\"../utils/equality\");\nvar initialState = {\n initialSourceClientOffset: null,\n initialClientOffset: null,\n clientOffset: null\n};\nfunction dragOffset(state, action) {\n if (state === void 0) {\n state = initialState;\n }\n var payload = action.payload;\n switch (action.type) {\n case dragDrop_1.INIT_COORDS:\n case dragDrop_1.BEGIN_DRAG:\n return {\n initialSourceClientOffset: payload.sourceClientOffset,\n initialClientOffset: payload.clientOffset,\n clientOffset: payload.clientOffset\n };\n case dragDrop_1.HOVER:\n if (equality_1.areCoordsEqual(state.clientOffset, payload.clientOffset)) {\n return state;\n }\n return __assign({}, state, {\n clientOffset: payload.clientOffset\n });\n case dragDrop_1.END_DRAG:\n case dragDrop_1.DROP:\n return initialState;\n default:\n return state;\n }\n}\nexports.default = dragOffset;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar setClientOffset_1 = require(\"./local/setClientOffset\");\nvar discount_lodash_1 = require(\"../../utils/discount_lodash\");\nvar invariant = require('invariant');\nvar types_1 = require(\"./types\");\nvar ResetCoordinatesAction = {\n type: types_1.INIT_COORDS,\n payload: {\n clientOffset: null,\n sourceClientOffset: null\n }\n};\nfunction createBeginDrag(manager) {\n return function beginDrag(sourceIds, options) {\n if (sourceIds === void 0) {\n sourceIds = [];\n }\n if (options === void 0) {\n options = {\n publishSource: true\n };\n }\n var _a = options.publishSource,\n publishSource = _a === void 0 ? true : _a,\n clientOffset = options.clientOffset,\n getSourceClientOffset = options.getSourceClientOffset;\n var monitor = manager.getMonitor();\n var registry = manager.getRegistry();\n // Initialize the coordinates using the client offset\n manager.dispatch(setClientOffset_1.setClientOffset(clientOffset));\n verifyInvariants(sourceIds, monitor, registry);\n // Get the draggable source\n var sourceId = getDraggableSource(sourceIds, monitor);\n if (sourceId === null) {\n manager.dispatch(ResetCoordinatesAction);\n return;\n }\n // Get the source client offset\n var sourceClientOffset = null;\n if (clientOffset) {\n verifyGetSourceClientOffsetIsFunction(getSourceClientOffset);\n sourceClientOffset = getSourceClientOffset(sourceId);\n }\n // Initialize the full coordinates\n manager.dispatch(setClientOffset_1.setClientOffset(clientOffset, sourceClientOffset));\n var source = registry.getSource(sourceId);\n var item = source.beginDrag(monitor, sourceId);\n verifyItemIsObject(item);\n registry.pinSource(sourceId);\n var itemType = registry.getSourceType(sourceId);\n return {\n type: types_1.BEGIN_DRAG,\n payload: {\n itemType: itemType,\n item: item,\n sourceId: sourceId,\n clientOffset: clientOffset || null,\n sourceClientOffset: sourceClientOffset || null,\n isSourcePublic: !!publishSource\n }\n };\n };\n}\nexports.default = createBeginDrag;\nfunction verifyInvariants(sourceIds, monitor, registry) {\n invariant(!monitor.isDragging(), 'Cannot call beginDrag while dragging.');\n for (var _i = 0, sourceIds_1 = sourceIds; _i < sourceIds_1.length; _i++) {\n var s = sourceIds_1[_i];\n invariant(registry.getSource(s), 'Expected sourceIds to be registered.');\n }\n}\nfunction verifyGetSourceClientOffsetIsFunction(getSourceClientOffset) {\n invariant(typeof getSourceClientOffset === 'function', 'When clientOffset is provided, getSourceClientOffset must be a function.');\n}\nfunction verifyItemIsObject(item) {\n invariant(discount_lodash_1.isObject(item), 'Item must be an object.');\n}\nfunction getDraggableSource(sourceIds, monitor) {\n var sourceId = null;\n for (var i = sourceIds.length - 1; i >= 0; i--) {\n if (monitor.canDragSource(sourceIds[i])) {\n sourceId = sourceIds[i];\n break;\n }\n }\n return sourceId;\n}","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar types_1 = require(\"../types\");\nfunction setClientOffset(clientOffset, sourceClientOffset) {\n return {\n type: types_1.INIT_COORDS,\n payload: {\n sourceClientOffset: sourceClientOffset || null,\n clientOffset: clientOffset || null\n }\n };\n}\nexports.setClientOffset = setClientOffset;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar types_1 = require(\"./types\");\nfunction createPublishDragSource(manager) {\n return function publishDragSource() {\n var monitor = manager.getMonitor();\n if (monitor.isDragging()) {\n return {\n type: types_1.PUBLISH_DRAG_SOURCE\n };\n }\n };\n}\nexports.default = createPublishDragSource;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar matchesType_1 = require(\"../../utils/matchesType\");\nvar types_1 = require(\"./types\");\nvar invariant = require('invariant');\nfunction createHover(manager) {\n return function hover(targetIdsArg, _a) {\n var clientOffset = (_a === void 0 ? {} : _a).clientOffset;\n verifyTargetIdsIsArray(targetIdsArg);\n var targetIds = targetIdsArg.slice(0);\n var monitor = manager.getMonitor();\n var registry = manager.getRegistry();\n checkInvariants(targetIds, monitor, registry);\n var draggedItemType = monitor.getItemType();\n removeNonMatchingTargetIds(targetIds, registry, draggedItemType);\n hoverAllTargets(targetIds, monitor, registry);\n return {\n type: types_1.HOVER,\n payload: {\n targetIds: targetIds,\n clientOffset: clientOffset || null\n }\n };\n };\n}\nexports.default = createHover;\nfunction verifyTargetIdsIsArray(targetIdsArg) {\n invariant(Array.isArray(targetIdsArg), 'Expected targetIds to be an array.');\n}\nfunction checkInvariants(targetIds, monitor, registry) {\n invariant(monitor.isDragging(), 'Cannot call hover while not dragging.');\n invariant(!monitor.didDrop(), 'Cannot call hover after drop.');\n for (var i = 0; i < targetIds.length; i++) {\n var targetId = targetIds[i];\n invariant(targetIds.lastIndexOf(targetId) === i, 'Expected targetIds to be unique in the passed array.');\n var target = registry.getTarget(targetId);\n invariant(target, 'Expected targetIds to be registered.');\n }\n}\nfunction removeNonMatchingTargetIds(targetIds, registry, draggedItemType) {\n // Remove those targetIds that don't match the targetType. This\n // fixes shallow isOver which would only be non-shallow because of\n // non-matching targets.\n for (var i = targetIds.length - 1; i >= 0; i--) {\n var targetId = targetIds[i];\n var targetType = registry.getTargetType(targetId);\n if (!matchesType_1.default(targetType, draggedItemType)) {\n targetIds.splice(i, 1);\n }\n }\n}\nfunction hoverAllTargets(targetIds, monitor, registry) {\n // Finally call hover on all matching targets.\n for (var _i = 0, targetIds_1 = targetIds; _i < targetIds_1.length; _i++) {\n var targetId = targetIds_1[_i];\n var target = registry.getTarget(targetId);\n target.hover(monitor, targetId);\n }\n}","\"use strict\";\n\nvar __assign = this && this.__assign || function () {\n __assign = Object.assign || function (t) {\n for (var s, i = 1, n = arguments.length; i < n; i++) {\n s = arguments[i];\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\n }\n return t;\n };\n return __assign.apply(this, arguments);\n};\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar types_1 = require(\"./types\");\nvar discount_lodash_1 = require(\"../../utils/discount_lodash\");\nvar invariant = require('invariant');\nfunction createDrop(manager) {\n return function drop(options) {\n if (options === void 0) {\n options = {};\n }\n var monitor = manager.getMonitor();\n var registry = manager.getRegistry();\n verifyInvariants(monitor);\n var targetIds = getDroppableTargets(monitor);\n // Multiple actions are dispatched here, which is why this doesn't return an action\n targetIds.forEach(function (targetId, index) {\n var dropResult = determineDropResult(targetId, index, registry, monitor);\n var action = {\n type: types_1.DROP,\n payload: {\n dropResult: __assign({}, options, dropResult)\n }\n };\n manager.dispatch(action);\n });\n };\n}\nexports.default = createDrop;\nfunction verifyInvariants(monitor) {\n invariant(monitor.isDragging(), 'Cannot call drop while not dragging.');\n invariant(!monitor.didDrop(), 'Cannot call drop twice during one drag operation.');\n}\nfunction determineDropResult(targetId, index, registry, monitor) {\n var target = registry.getTarget(targetId);\n var dropResult = target ? target.drop(monitor, targetId) : undefined;\n verifyDropResultType(dropResult);\n if (typeof dropResult === 'undefined') {\n dropResult = index === 0 ? {} : monitor.getDropResult();\n }\n return dropResult;\n}\nfunction verifyDropResultType(dropResult) {\n invariant(typeof dropResult === 'undefined' || discount_lodash_1.isObject(dropResult), 'Drop result must either be an object or undefined.');\n}\nfunction getDroppableTargets(monitor) {\n var targetIds = monitor.getTargetIds().filter(monitor.canDropOnTarget, monitor);\n targetIds.reverse();\n return targetIds;\n}","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar types_1 = require(\"./types\");\nvar invariant = require('invariant');\nfunction createEndDrag(manager) {\n return function endDrag() {\n var monitor = manager.getMonitor();\n var registry = manager.getRegistry();\n verifyIsDragging(monitor);\n var sourceId = monitor.getSourceId();\n var source = registry.getSource(sourceId, true);\n source.endDrag(monitor, sourceId);\n registry.unpinSource();\n return {\n type: types_1.END_DRAG\n };\n };\n}\nexports.default = createEndDrag;\nfunction verifyIsDragging(monitor) {\n invariant(monitor.isDragging(), 'Cannot call endDrag while not dragging.');\n}","\"use strict\";\n\nvar __assign = this && this.__assign || function () {\n __assign = Object.assign || function (t) {\n for (var s, i = 1, n = arguments.length; i < n; i++) {\n s = arguments[i];\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\n }\n return t;\n };\n return __assign.apply(this, arguments);\n};\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar dragDrop_1 = require(\"../actions/dragDrop\");\nvar registry_1 = require(\"../actions/registry\");\nvar discount_lodash_1 = require(\"../utils/discount_lodash\");\nvar initialState = {\n itemType: null,\n item: null,\n sourceId: null,\n targetIds: [],\n dropResult: null,\n didDrop: false,\n isSourcePublic: null\n};\nfunction dragOperation(state, action) {\n if (state === void 0) {\n state = initialState;\n }\n var payload = action.payload;\n switch (action.type) {\n case dragDrop_1.BEGIN_DRAG:\n return __assign({}, state, {\n itemType: payload.itemType,\n item: payload.item,\n sourceId: payload.sourceId,\n isSourcePublic: payload.isSourcePublic,\n dropResult: null,\n didDrop: false\n });\n case dragDrop_1.PUBLISH_DRAG_SOURCE:\n return __assign({}, state, {\n isSourcePublic: true\n });\n case dragDrop_1.HOVER:\n return __assign({}, state, {\n targetIds: payload.targetIds\n });\n case registry_1.REMOVE_TARGET:\n if (state.targetIds.indexOf(payload.targetId) === -1) {\n return state;\n }\n return __assign({}, state, {\n targetIds: discount_lodash_1.without(state.targetIds, payload.targetId)\n });\n case dragDrop_1.DROP:\n return __assign({}, state, {\n dropResult: payload.dropResult,\n didDrop: true,\n targetIds: []\n });\n case dragDrop_1.END_DRAG:\n return __assign({}, state, {\n itemType: null,\n item: null,\n sourceId: null,\n dropResult: null,\n didDrop: false,\n isSourcePublic: null,\n targetIds: []\n });\n default:\n return state;\n }\n}\nexports.default = dragOperation;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar registry_1 = require(\"../actions/registry\");\nfunction refCount(state, action) {\n if (state === void 0) {\n state = 0;\n }\n switch (action.type) {\n case registry_1.ADD_SOURCE:\n case registry_1.ADD_TARGET:\n return state + 1;\n case registry_1.REMOVE_SOURCE:\n case registry_1.REMOVE_TARGET:\n return state - 1;\n default:\n return state;\n }\n}\nexports.default = refCount;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar dragDrop_1 = require(\"../actions/dragDrop\");\nvar registry_1 = require(\"../actions/registry\");\nvar equality_1 = require(\"../utils/equality\");\nvar dirtiness_1 = require(\"../utils/dirtiness\");\nvar discount_lodash_1 = require(\"../utils/discount_lodash\");\nfunction dirtyHandlerIds(state, action) {\n if (state === void 0) {\n state = dirtiness_1.NONE;\n }\n switch (action.type) {\n case dragDrop_1.HOVER:\n break;\n case registry_1.ADD_SOURCE:\n case registry_1.ADD_TARGET:\n case registry_1.REMOVE_TARGET:\n case registry_1.REMOVE_SOURCE:\n return dirtiness_1.NONE;\n case dragDrop_1.BEGIN_DRAG:\n case dragDrop_1.PUBLISH_DRAG_SOURCE:\n case dragDrop_1.END_DRAG:\n case dragDrop_1.DROP:\n default:\n return dirtiness_1.ALL;\n }\n var _a = action.payload,\n _b = _a.targetIds,\n targetIds = _b === void 0 ? [] : _b,\n _c = _a.prevTargetIds,\n prevTargetIds = _c === void 0 ? [] : _c;\n var result = discount_lodash_1.xor(targetIds, prevTargetIds);\n var didChange = result.length > 0 || !equality_1.areArraysEqual(targetIds, prevTargetIds);\n if (!didChange) {\n return dirtiness_1.NONE;\n }\n // Check the target ids at the innermost position. If they are valid, add them\n // to the result\n var prevInnermostTargetId = prevTargetIds[prevTargetIds.length - 1];\n var innermostTargetId = targetIds[targetIds.length - 1];\n if (prevInnermostTargetId !== innermostTargetId) {\n if (prevInnermostTargetId) {\n result.push(prevInnermostTargetId);\n }\n if (innermostTargetId) {\n result.push(innermostTargetId);\n }\n }\n return result;\n}\nexports.default = dirtyHandlerIds;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nfunction stateId(state) {\n if (state === void 0) {\n state = 0;\n }\n return state + 1;\n}\nexports.default = stateId;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar matchesType_1 = require(\"./utils/matchesType\");\nvar coords_1 = require(\"./utils/coords\");\nvar dirtiness_1 = require(\"./utils/dirtiness\");\nvar invariant = require('invariant');\nvar DragDropMonitorImpl = /** @class */function () {\n function DragDropMonitorImpl(store, registry) {\n this.store = store;\n this.registry = registry;\n }\n DragDropMonitorImpl.prototype.subscribeToStateChange = function (listener, options) {\n var _this = this;\n if (options === void 0) {\n options = {\n handlerIds: undefined\n };\n }\n var handlerIds = options.handlerIds;\n invariant(typeof listener === 'function', 'listener must be a function.');\n invariant(typeof handlerIds === 'undefined' || Array.isArray(handlerIds), 'handlerIds, when specified, must be an array of strings.');\n var prevStateId = this.store.getState().stateId;\n var handleChange = function () {\n var state = _this.store.getState();\n var currentStateId = state.stateId;\n try {\n var canSkipListener = currentStateId === prevStateId || currentStateId === prevStateId + 1 && !dirtiness_1.areDirty(state.dirtyHandlerIds, handlerIds);\n if (!canSkipListener) {\n listener();\n }\n } finally {\n prevStateId = currentStateId;\n }\n };\n return this.store.subscribe(handleChange);\n };\n DragDropMonitorImpl.prototype.subscribeToOffsetChange = function (listener) {\n var _this = this;\n invariant(typeof listener === 'function', 'listener must be a function.');\n var previousState = this.store.getState().dragOffset;\n var handleChange = function () {\n var nextState = _this.store.getState().dragOffset;\n if (nextState === previousState) {\n return;\n }\n previousState = nextState;\n listener();\n };\n return this.store.subscribe(handleChange);\n };\n DragDropMonitorImpl.prototype.canDragSource = function (sourceId) {\n if (!sourceId) {\n return false;\n }\n var source = this.registry.getSource(sourceId);\n invariant(source, 'Expected to find a valid source.');\n if (this.isDragging()) {\n return false;\n }\n return source.canDrag(this, sourceId);\n };\n DragDropMonitorImpl.prototype.canDropOnTarget = function (targetId) {\n // undefined on initial render\n if (!targetId) {\n return false;\n }\n var target = this.registry.getTarget(targetId);\n invariant(target, 'Expected to find a valid target.');\n if (!this.isDragging() || this.didDrop()) {\n return false;\n }\n var targetType = this.registry.getTargetType(targetId);\n var draggedItemType = this.getItemType();\n return matchesType_1.default(targetType, draggedItemType) && target.canDrop(this, targetId);\n };\n DragDropMonitorImpl.prototype.isDragging = function () {\n return Boolean(this.getItemType());\n };\n DragDropMonitorImpl.prototype.isDraggingSource = function (sourceId) {\n // undefined on initial render\n if (!sourceId) {\n return false;\n }\n var source = this.registry.getSource(sourceId, true);\n invariant(source, 'Expected to find a valid source.');\n if (!this.isDragging() || !this.isSourcePublic()) {\n return false;\n }\n var sourceType = this.registry.getSourceType(sourceId);\n var draggedItemType = this.getItemType();\n if (sourceType !== draggedItemType) {\n return false;\n }\n return source.isDragging(this, sourceId);\n };\n DragDropMonitorImpl.prototype.isOverTarget = function (targetId, options) {\n if (options === void 0) {\n options = {\n shallow: false\n };\n }\n // undefined on initial render\n if (!targetId) {\n return false;\n }\n var shallow = options.shallow;\n if (!this.isDragging()) {\n return false;\n }\n var targetType = this.registry.getTargetType(targetId);\n var draggedItemType = this.getItemType();\n if (draggedItemType && !matchesType_1.default(targetType, draggedItemType)) {\n return false;\n }\n var targetIds = this.getTargetIds();\n if (!targetIds.length) {\n return false;\n }\n var index = targetIds.indexOf(targetId);\n if (shallow) {\n return index === targetIds.length - 1;\n } else {\n return index > -1;\n }\n };\n DragDropMonitorImpl.prototype.getItemType = function () {\n return this.store.getState().dragOperation.itemType;\n };\n DragDropMonitorImpl.prototype.getItem = function () {\n return this.store.getState().dragOperation.item;\n };\n DragDropMonitorImpl.prototype.getSourceId = function () {\n return this.store.getState().dragOperation.sourceId;\n };\n DragDropMonitorImpl.prototype.getTargetIds = function () {\n return this.store.getState().dragOperation.targetIds;\n };\n DragDropMonitorImpl.prototype.getDropResult = function () {\n return this.store.getState().dragOperation.dropResult;\n };\n DragDropMonitorImpl.prototype.didDrop = function () {\n return this.store.getState().dragOperation.didDrop;\n };\n DragDropMonitorImpl.prototype.isSourcePublic = function () {\n return this.store.getState().dragOperation.isSourcePublic;\n };\n DragDropMonitorImpl.prototype.getInitialClientOffset = function () {\n return this.store.getState().dragOffset.initialClientOffset;\n };\n DragDropMonitorImpl.prototype.getInitialSourceClientOffset = function () {\n return this.store.getState().dragOffset.initialSourceClientOffset;\n };\n DragDropMonitorImpl.prototype.getClientOffset = function () {\n return this.store.getState().dragOffset.clientOffset;\n };\n DragDropMonitorImpl.prototype.getSourceClientOffset = function () {\n return coords_1.getSourceClientOffset(this.store.getState().dragOffset);\n };\n DragDropMonitorImpl.prototype.getDifferenceFromInitialOffset = function () {\n return coords_1.getDifferenceFromInitialOffset(this.store.getState().dragOffset);\n };\n return DragDropMonitorImpl;\n}();\nexports.default = DragDropMonitorImpl;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n/**\n * Coordinate addition\n * @param a The first coordinate\n * @param b The second coordinate\n */\nfunction add(a, b) {\n return {\n x: a.x + b.x,\n y: a.y + b.y\n };\n}\nexports.add = add;\n/**\n * Coordinate subtraction\n * @param a The first coordinate\n * @param b The second coordinate\n */\nfunction subtract(a, b) {\n return {\n x: a.x - b.x,\n y: a.y - b.y\n };\n}\nexports.subtract = subtract;\n/**\n * Returns the cartesian distance of the drag source component's position, based on its position\n * at the time when the current drag operation has started, and the movement difference.\n *\n * Returns null if no item is being dragged.\n *\n * @param state The offset state to compute from\n */\nfunction getSourceClientOffset(state) {\n var clientOffset = state.clientOffset,\n initialClientOffset = state.initialClientOffset,\n initialSourceClientOffset = state.initialSourceClientOffset;\n if (!clientOffset || !initialClientOffset || !initialSourceClientOffset) {\n return null;\n }\n return subtract(add(clientOffset, initialSourceClientOffset), initialClientOffset);\n}\nexports.getSourceClientOffset = getSourceClientOffset;\n/**\n * Determines the x,y offset between the client offset and the initial client offset\n *\n * @param state The offset state to compute from\n */\nfunction getDifferenceFromInitialOffset(state) {\n var clientOffset = state.clientOffset,\n initialClientOffset = state.initialClientOffset;\n if (!clientOffset || !initialClientOffset) {\n return null;\n }\n return subtract(clientOffset, initialClientOffset);\n}\nexports.getDifferenceFromInitialOffset = getDifferenceFromInitialOffset;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar registry_1 = require(\"./actions/registry\");\nvar getNextUniqueId_1 = require(\"./utils/getNextUniqueId\");\nvar interfaces_1 = require(\"./interfaces\");\nvar contracts_1 = require(\"./contracts\");\nvar invariant = require('invariant');\nvar asap = require('asap');\nfunction getNextHandlerId(role) {\n var id = getNextUniqueId_1.default().toString();\n switch (role) {\n case interfaces_1.HandlerRole.SOURCE:\n return \"S\" + id;\n case interfaces_1.HandlerRole.TARGET:\n return \"T\" + id;\n default:\n throw new Error(\"Unknown Handler Role: \" + role);\n }\n}\nfunction parseRoleFromHandlerId(handlerId) {\n switch (handlerId[0]) {\n case 'S':\n return interfaces_1.HandlerRole.SOURCE;\n case 'T':\n return interfaces_1.HandlerRole.TARGET;\n default:\n invariant(false, \"Cannot parse handler ID: \" + handlerId);\n }\n}\nfunction mapContainsValue(map, searchValue) {\n var entries = map.entries();\n var isDone = false;\n do {\n var _a = entries.next(),\n done = _a.done,\n _b = _a.value,\n value = _b[1];\n if (value === searchValue) {\n return true;\n }\n isDone = done;\n } while (!isDone);\n return false;\n}\nvar HandlerRegistryImpl = /** @class */function () {\n function HandlerRegistryImpl(store) {\n this.store = store;\n this.types = new Map();\n this.dragSources = new Map();\n this.dropTargets = new Map();\n this.pinnedSourceId = null;\n this.pinnedSource = null;\n }\n HandlerRegistryImpl.prototype.addSource = function (type, source) {\n contracts_1.validateType(type);\n contracts_1.validateSourceContract(source);\n var sourceId = this.addHandler(interfaces_1.HandlerRole.SOURCE, type, source);\n this.store.dispatch(registry_1.addSource(sourceId));\n return sourceId;\n };\n HandlerRegistryImpl.prototype.addTarget = function (type, target) {\n contracts_1.validateType(type, true);\n contracts_1.validateTargetContract(target);\n var targetId = this.addHandler(interfaces_1.HandlerRole.TARGET, type, target);\n this.store.dispatch(registry_1.addTarget(targetId));\n return targetId;\n };\n HandlerRegistryImpl.prototype.containsHandler = function (handler) {\n return mapContainsValue(this.dragSources, handler) || mapContainsValue(this.dropTargets, handler);\n };\n HandlerRegistryImpl.prototype.getSource = function (sourceId, includePinned) {\n if (includePinned === void 0) {\n includePinned = false;\n }\n invariant(this.isSourceId(sourceId), 'Expected a valid source ID.');\n var isPinned = includePinned && sourceId === this.pinnedSourceId;\n var source = isPinned ? this.pinnedSource : this.dragSources.get(sourceId);\n return source;\n };\n HandlerRegistryImpl.prototype.getTarget = function (targetId) {\n invariant(this.isTargetId(targetId), 'Expected a valid target ID.');\n return this.dropTargets.get(targetId);\n };\n HandlerRegistryImpl.prototype.getSourceType = function (sourceId) {\n invariant(this.isSourceId(sourceId), 'Expected a valid source ID.');\n return this.types.get(sourceId);\n };\n HandlerRegistryImpl.prototype.getTargetType = function (targetId) {\n invariant(this.isTargetId(targetId), 'Expected a valid target ID.');\n return this.types.get(targetId);\n };\n HandlerRegistryImpl.prototype.isSourceId = function (handlerId) {\n var role = parseRoleFromHandlerId(handlerId);\n return role === interfaces_1.HandlerRole.SOURCE;\n };\n HandlerRegistryImpl.prototype.isTargetId = function (handlerId) {\n var role = parseRoleFromHandlerId(handlerId);\n return role === interfaces_1.HandlerRole.TARGET;\n };\n HandlerRegistryImpl.prototype.removeSource = function (sourceId) {\n var _this = this;\n invariant(this.getSource(sourceId), 'Expected an existing source.');\n this.store.dispatch(registry_1.removeSource(sourceId));\n asap(function () {\n _this.dragSources.delete(sourceId);\n _this.types.delete(sourceId);\n });\n };\n HandlerRegistryImpl.prototype.removeTarget = function (targetId) {\n invariant(this.getTarget(targetId), 'Expected an existing target.');\n this.store.dispatch(registry_1.removeTarget(targetId));\n this.dropTargets.delete(targetId);\n this.types.delete(targetId);\n };\n HandlerRegistryImpl.prototype.pinSource = function (sourceId) {\n var source = this.getSource(sourceId);\n invariant(source, 'Expected an existing source.');\n this.pinnedSourceId = sourceId;\n this.pinnedSource = source;\n };\n HandlerRegistryImpl.prototype.unpinSource = function () {\n invariant(this.pinnedSource, 'No source is pinned at the time.');\n this.pinnedSourceId = null;\n this.pinnedSource = null;\n };\n HandlerRegistryImpl.prototype.addHandler = function (role, type, handler) {\n var id = getNextHandlerId(role);\n this.types.set(id, type);\n if (role === interfaces_1.HandlerRole.SOURCE) {\n this.dragSources.set(id, handler);\n } else if (role === interfaces_1.HandlerRole.TARGET) {\n this.dropTargets.set(id, handler);\n }\n return id;\n };\n return HandlerRegistryImpl;\n}();\nexports.default = HandlerRegistryImpl;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar nextUniqueId = 0;\nfunction getNextUniqueId() {\n return nextUniqueId++;\n}\nexports.default = getNextUniqueId;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar invariant = require('invariant');\nfunction validateSourceContract(source) {\n invariant(typeof source.canDrag === 'function', 'Expected canDrag to be a function.');\n invariant(typeof source.beginDrag === 'function', 'Expected beginDrag to be a function.');\n invariant(typeof source.endDrag === 'function', 'Expected endDrag to be a function.');\n}\nexports.validateSourceContract = validateSourceContract;\nfunction validateTargetContract(target) {\n invariant(typeof target.canDrop === 'function', 'Expected canDrop to be a function.');\n invariant(typeof target.hover === 'function', 'Expected hover to be a function.');\n invariant(typeof target.drop === 'function', 'Expected beginDrag to be a function.');\n}\nexports.validateTargetContract = validateTargetContract;\nfunction validateType(type, allowArray) {\n if (allowArray && Array.isArray(type)) {\n type.forEach(function (t) {\n return validateType(t, false);\n });\n return;\n }\n invariant(typeof type === 'string' || typeof type === 'symbol', allowArray ? 'Type can only be a string, a symbol, or an array of either.' : 'Type can only be a string or a symbol.');\n}\nexports.validateType = validateType;","\"use strict\";\n\n// rawAsap provides everything we need except exception management.\nvar rawAsap = require(\"./raw\");\n// RawTasks are recycled to reduce GC churn.\nvar freeTasks = [];\n// We queue errors to ensure they are thrown in right order (FIFO).\n// Array-as-queue is good enough here, since we are just dealing with exceptions.\nvar pendingErrors = [];\nvar requestErrorThrow = rawAsap.makeRequestCallFromTimer(throwFirstError);\nfunction throwFirstError() {\n if (pendingErrors.length) {\n throw pendingErrors.shift();\n }\n}\n\n/**\n * Calls a task as soon as possible after returning, in its own event, with priority\n * over other events like animation, reflow, and repaint. An error thrown from an\n * event will not interrupt, nor even substantially slow down the processing of\n * other events, but will be rather postponed to a lower priority event.\n * @param {{call}} task A callable object, typically a function that takes no\n * arguments.\n */\nmodule.exports = asap;\nfunction asap(task) {\n var rawTask;\n if (freeTasks.length) {\n rawTask = freeTasks.pop();\n } else {\n rawTask = new RawTask();\n }\n rawTask.task = task;\n rawAsap(rawTask);\n}\n\n// We wrap tasks with recyclable task objects. A task object implements\n// `call`, just like a function.\nfunction RawTask() {\n this.task = null;\n}\n\n// The sole purpose of wrapping the task is to catch the exception and recycle\n// the task object after its single use.\nRawTask.prototype.call = function () {\n try {\n this.task.call();\n } catch (error) {\n if (asap.onerror) {\n // This hook exists purely for testing purposes.\n // Its name will be periodically randomized to break any code that\n // depends on its existence.\n asap.onerror(error);\n } else {\n // In a web browser, exceptions are not fatal. However, to avoid\n // slowing down the queue of pending tasks, we rethrow the error in a\n // lower priority turn.\n pendingErrors.push(error);\n requestErrorThrow();\n }\n } finally {\n this.task = null;\n freeTasks[freeTasks.length] = this;\n }\n};","\"use strict\";\n\n// Use the fastest means possible to execute a task in its own turn, with\n// priority over other events including IO, animation, reflow, and redraw\n// events in browsers.\n//\n// An exception thrown by a task will permanently interrupt the processing of\n// subsequent tasks. The higher level `asap` function ensures that if an\n// exception is thrown by a task, that the task queue will continue flushing as\n// soon as possible, but if you use `rawAsap` directly, you are responsible to\n// either ensure that no exceptions are thrown from your task, or to manually\n// call `rawAsap.requestFlush` if an exception is thrown.\nmodule.exports = rawAsap;\nfunction rawAsap(task) {\n if (!queue.length) {\n requestFlush();\n flushing = true;\n }\n // Equivalent to push, but avoids a function call.\n queue[queue.length] = task;\n}\nvar queue = [];\n// Once a flush has been requested, no further calls to `requestFlush` are\n// necessary until the next `flush` completes.\nvar flushing = false;\n// `requestFlush` is an implementation-specific method that attempts to kick\n// off a `flush` event as quickly as possible. `flush` will attempt to exhaust\n// the event queue before yielding to the browser's own event loop.\nvar requestFlush;\n// The position of the next task to execute in the task queue. This is\n// preserved between calls to `flush` so that it can be resumed if\n// a task throws an exception.\nvar index = 0;\n// If a task schedules additional tasks recursively, the task queue can grow\n// unbounded. To prevent memory exhaustion, the task queue will periodically\n// truncate already-completed tasks.\nvar capacity = 1024;\n\n// The flush function processes all tasks that have been scheduled with\n// `rawAsap` unless and until one of those tasks throws an exception.\n// If a task throws an exception, `flush` ensures that its state will remain\n// consistent and will resume where it left off when called again.\n// However, `flush` does not make any arrangements to be called again if an\n// exception is thrown.\nfunction flush() {\n while (index < queue.length) {\n var currentIndex = index;\n // Advance the index before calling the task. This ensures that we will\n // begin flushing on the next task the task throws an error.\n index = index + 1;\n queue[currentIndex].call();\n // Prevent leaking memory for long chains of recursive calls to `asap`.\n // If we call `asap` within tasks scheduled by `asap`, the queue will\n // grow, but to avoid an O(n) walk for every task we execute, we don't\n // shift tasks off the queue after they have been executed.\n // Instead, we periodically shift 1024 tasks off the queue.\n if (index > capacity) {\n // Manually shift all values starting at the index back to the\n // beginning of the queue.\n for (var scan = 0, newLength = queue.length - index; scan < newLength; scan++) {\n queue[scan] = queue[scan + index];\n }\n queue.length -= index;\n index = 0;\n }\n }\n queue.length = 0;\n index = 0;\n flushing = false;\n}\n\n// `requestFlush` is implemented using a strategy based on data collected from\n// every available SauceLabs Selenium web driver worker at time of writing.\n// https://docs.google.com/spreadsheets/d/1mG-5UYGup5qxGdEMWkhP6BWCz053NUb2E1QoUTU16uA/edit#gid=783724593\n\n// Safari 6 and 6.1 for desktop, iPad, and iPhone are the only browsers that\n// have WebKitMutationObserver but not un-prefixed MutationObserver.\n// Must use `global` or `self` instead of `window` to work in both frames and web\n// workers. `global` is a provision of Browserify, Mr, Mrs, or Mop.\n\n/* globals self */\nvar scope = typeof global !== \"undefined\" ? global : self;\nvar BrowserMutationObserver = scope.MutationObserver || scope.WebKitMutationObserver;\n\n// MutationObservers are desirable because they have high priority and work\n// reliably everywhere they are implemented.\n// They are implemented in all modern browsers.\n//\n// - Android 4-4.3\n// - Chrome 26-34\n// - Firefox 14-29\n// - Internet Explorer 11\n// - iPad Safari 6-7.1\n// - iPhone Safari 7-7.1\n// - Safari 6-7\nif (typeof BrowserMutationObserver === \"function\") {\n requestFlush = makeRequestCallFromMutationObserver(flush);\n\n // MessageChannels are desirable because they give direct access to the HTML\n // task queue, are implemented in Internet Explorer 10, Safari 5.0-1, and Opera\n // 11-12, and in web workers in many engines.\n // Although message channels yield to any queued rendering and IO tasks, they\n // would be better than imposing the 4ms delay of timers.\n // However, they do not work reliably in Internet Explorer or Safari.\n\n // Internet Explorer 10 is the only browser that has setImmediate but does\n // not have MutationObservers.\n // Although setImmediate yields to the browser's renderer, it would be\n // preferrable to falling back to setTimeout since it does not have\n // the minimum 4ms penalty.\n // Unfortunately there appears to be a bug in Internet Explorer 10 Mobile (and\n // Desktop to a lesser extent) that renders both setImmediate and\n // MessageChannel useless for the purposes of ASAP.\n // https://github.com/kriskowal/q/issues/396\n\n // Timers are implemented universally.\n // We fall back to timers in workers in most engines, and in foreground\n // contexts in the following browsers.\n // However, note that even this simple case requires nuances to operate in a\n // broad spectrum of browsers.\n //\n // - Firefox 3-13\n // - Internet Explorer 6-9\n // - iPad Safari 4.3\n // - Lynx 2.8.7\n} else {\n requestFlush = makeRequestCallFromTimer(flush);\n}\n\n// `requestFlush` requests that the high priority event queue be flushed as\n// soon as possible.\n// This is useful to prevent an error thrown in a task from stalling the event\n// queue if the exception handled by Node.js’s\n// `process.on(\"uncaughtException\")` or by a domain.\nrawAsap.requestFlush = requestFlush;\n\n// To request a high priority event, we induce a mutation observer by toggling\n// the text of a text node between \"1\" and \"-1\".\nfunction makeRequestCallFromMutationObserver(callback) {\n var toggle = 1;\n var observer = new BrowserMutationObserver(callback);\n var node = document.createTextNode(\"\");\n observer.observe(node, {\n characterData: true\n });\n return function requestCall() {\n toggle = -toggle;\n node.data = toggle;\n };\n}\n\n// The message channel technique was discovered by Malte Ubl and was the\n// original foundation for this library.\n// http://www.nonblocking.io/2011/06/windownexttick.html\n\n// Safari 6.0.5 (at least) intermittently fails to create message ports on a\n// page's first load. Thankfully, this version of Safari supports\n// MutationObservers, so we don't need to fall back in that case.\n\n// function makeRequestCallFromMessageChannel(callback) {\n// var channel = new MessageChannel();\n// channel.port1.onmessage = callback;\n// return function requestCall() {\n// channel.port2.postMessage(0);\n// };\n// }\n\n// For reasons explained above, we are also unable to use `setImmediate`\n// under any circumstances.\n// Even if we were, there is another bug in Internet Explorer 10.\n// It is not sufficient to assign `setImmediate` to `requestFlush` because\n// `setImmediate` must be called *by name* and therefore must be wrapped in a\n// closure.\n// Never forget.\n\n// function makeRequestCallFromSetImmediate(callback) {\n// return function requestCall() {\n// setImmediate(callback);\n// };\n// }\n\n// Safari 6.0 has a problem where timers will get lost while the user is\n// scrolling. This problem does not impact ASAP because Safari 6.0 supports\n// mutation observers, so that implementation is used instead.\n// However, if we ever elect to use timers in Safari, the prevalent work-around\n// is to add a scroll event listener that calls for a flush.\n\n// `setTimeout` does not call the passed callback if the delay is less than\n// approximately 7 in web workers in Firefox 8 through 18, and sometimes not\n// even then.\n\nfunction makeRequestCallFromTimer(callback) {\n return function requestCall() {\n // We dispatch a timeout with a specified delay of 0 for engines that\n // can reliably accommodate that request. This will usually be snapped\n // to a 4 milisecond delay, but once we're flushing, there's no delay\n // between events.\n var timeoutHandle = setTimeout(handleTimer, 0);\n // However, since this timer gets frequently dropped in Firefox\n // workers, we enlist an interval handle that will try to fire\n // an event 20 times per second until it succeeds.\n var intervalHandle = setInterval(handleTimer, 50);\n function handleTimer() {\n // Whichever timer succeeds will cancel both timers and\n // execute the callback.\n clearTimeout(timeoutHandle);\n clearInterval(intervalHandle);\n callback();\n }\n };\n}\n\n// This is for `asap.js` only.\n// Its name will be periodically randomized to break any code that depends on\n// its existence.\nrawAsap.makeRequestCallFromTimer = makeRequestCallFromTimer;\n\n// ASAP was originally a nextTick shim included in Q. This was factored out\n// into this ASAP package. It was later adapted to RSVP which made further\n// amendments. These decisions, particularly to marginalize MessageChannel and\n// to capture the MutationObserver implementation in a closure, were integrated\n// back into ASAP proper.\n// https://github.com/tildeio/rsvp.js/blob/cddf7232546a9cf858524b75cde6f9edf72620a7/lib/rsvp/asap.js","\"use strict\";\n\nvar __extends = this && this.__extends || function () {\n var extendStatics = function (d, b) {\n extendStatics = Object.setPrototypeOf || {\n __proto__: []\n } instanceof Array && function (d, b) {\n d.__proto__ = b;\n } || function (d, b) {\n for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];\n };\n return extendStatics(d, b);\n };\n return function (d, b) {\n extendStatics(d, b);\n function __() {\n this.constructor = d;\n }\n d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\n };\n}();\nvar __assign = this && this.__assign || function () {\n __assign = Object.assign || function (t) {\n for (var s, i = 1, n = arguments.length; i < n; i++) {\n s = arguments[i];\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\n }\n return t;\n };\n return __assign.apply(this, arguments);\n};\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar React = require(\"react\");\nvar checkDecoratorArguments_1 = require(\"./utils/checkDecoratorArguments\");\nvar DragDropContext_1 = require(\"./DragDropContext\");\nvar isRefable_1 = require(\"./utils/isRefable\");\nvar discount_lodash_1 = require(\"./utils/discount_lodash\");\nvar hoistStatics = require('hoist-non-react-statics');\nvar invariant = require('invariant');\nvar shallowEqual = require('shallowequal');\nfunction DragLayer(collect, options) {\n if (options === void 0) {\n options = {};\n }\n checkDecoratorArguments_1.default('DragLayer', 'collect[, options]', collect, options);\n invariant(typeof collect === 'function', 'Expected \"collect\" provided as the first argument to DragLayer to be a function that collects props to inject into the component. ', 'Instead, received %s. Read more: http://react-dnd.github.io/react-dnd/docs/api/drag-layer', collect);\n invariant(discount_lodash_1.isPlainObject(options), 'Expected \"options\" provided as the second argument to DragLayer to be a plain object when specified. ' + 'Instead, received %s. Read more: http://react-dnd.github.io/react-dnd/docs/api/drag-layer', options);\n return function decorateLayer(DecoratedComponent) {\n var Decorated = DecoratedComponent;\n var _a = options.arePropsEqual,\n arePropsEqual = _a === void 0 ? shallowEqual : _a;\n var displayName = Decorated.displayName || Decorated.name || 'Component';\n var DragLayerContainer = /** @class */function (_super) {\n __extends(DragLayerContainer, _super);\n function DragLayerContainer() {\n var _this = _super !== null && _super.apply(this, arguments) || this;\n _this.isCurrentlyMounted = false;\n _this.ref = React.createRef();\n _this.handleChange = function () {\n if (!_this.isCurrentlyMounted) {\n return;\n }\n var nextState = _this.getCurrentState();\n if (!shallowEqual(nextState, _this.state)) {\n _this.setState(nextState);\n }\n };\n return _this;\n }\n DragLayerContainer.prototype.getDecoratedComponentInstance = function () {\n invariant(this.ref.current, 'In order to access an instance of the decorated component, it must either be a class component or use React.forwardRef()');\n return this.ref.current;\n };\n DragLayerContainer.prototype.shouldComponentUpdate = function (nextProps, nextState) {\n return !arePropsEqual(nextProps, this.props) || !shallowEqual(nextState, this.state);\n };\n DragLayerContainer.prototype.componentDidMount = function () {\n this.isCurrentlyMounted = true;\n this.handleChange();\n };\n DragLayerContainer.prototype.componentWillUnmount = function () {\n this.isCurrentlyMounted = false;\n if (this.unsubscribeFromOffsetChange) {\n this.unsubscribeFromOffsetChange();\n this.unsubscribeFromOffsetChange = undefined;\n }\n if (this.unsubscribeFromStateChange) {\n this.unsubscribeFromStateChange();\n this.unsubscribeFromStateChange = undefined;\n }\n };\n DragLayerContainer.prototype.render = function () {\n var _this = this;\n return React.createElement(DragDropContext_1.Consumer, null, function (_a) {\n var dragDropManager = _a.dragDropManager;\n if (dragDropManager === undefined) {\n return null;\n }\n _this.receiveDragDropManager(dragDropManager);\n // Let componentDidMount fire to initialize the collected state\n if (!_this.isCurrentlyMounted) {\n return null;\n }\n return React.createElement(Decorated, __assign({}, _this.props, _this.state, {\n ref: isRefable_1.isRefable(Decorated) ? _this.ref : null\n }));\n });\n };\n DragLayerContainer.prototype.receiveDragDropManager = function (dragDropManager) {\n if (this.manager !== undefined) {\n return;\n }\n this.manager = dragDropManager;\n invariant(typeof dragDropManager === 'object', 'Could not find the drag and drop manager in the context of %s. ' + 'Make sure to wrap the top-level component of your app with DragDropContext. ' + 'Read more: http://react-dnd.github.io/react-dnd/docs/troubleshooting#could-not-find-the-drag-and-drop-manager-in-the-context', displayName, displayName);\n var monitor = this.manager.getMonitor();\n this.unsubscribeFromOffsetChange = monitor.subscribeToOffsetChange(this.handleChange);\n this.unsubscribeFromStateChange = monitor.subscribeToStateChange(this.handleChange);\n };\n DragLayerContainer.prototype.getCurrentState = function () {\n if (!this.manager) {\n return {};\n }\n var monitor = this.manager.getMonitor();\n return collect(monitor, this.props);\n };\n DragLayerContainer.displayName = \"DragLayer(\" + displayName + \")\";\n DragLayerContainer.DecoratedComponent = DecoratedComponent;\n return DragLayerContainer;\n }(React.Component);\n return hoistStatics(DragLayerContainer, DecoratedComponent);\n };\n}\nexports.default = DragLayer;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar checkDecoratorArguments_1 = require(\"./utils/checkDecoratorArguments\");\nvar decorateHandler_1 = require(\"./decorateHandler\");\nvar registerSource_1 = require(\"./registerSource\");\nvar createSourceFactory_1 = require(\"./createSourceFactory\");\nvar DragSourceMonitorImpl_1 = require(\"./DragSourceMonitorImpl\");\nvar SourceConnector_1 = require(\"./SourceConnector\");\nvar isValidType_1 = require(\"./utils/isValidType\");\nvar discount_lodash_1 = require(\"./utils/discount_lodash\");\nvar invariant = require('invariant');\n/**\n * Decorates a component as a dragsource\n * @param type The dragsource type\n * @param spec The drag source specification\n * @param collect The props collector function\n * @param options DnD options\n */\nfunction DragSource(type, spec, collect, options) {\n if (options === void 0) {\n options = {};\n }\n checkDecoratorArguments_1.default('DragSource', 'type, spec, collect[, options]', type, spec, collect, options);\n var getType = type;\n if (typeof type !== 'function') {\n invariant(isValidType_1.default(type), 'Expected \"type\" provided as the first argument to DragSource to be ' + 'a string, or a function that returns a string given the current props. ' + 'Instead, received %s. ' + 'Read more: http://react-dnd.github.io/react-dnd/docs/api/drag-source', type);\n getType = function () {\n return type;\n };\n }\n invariant(discount_lodash_1.isPlainObject(spec), 'Expected \"spec\" provided as the second argument to DragSource to be ' + 'a plain object. Instead, received %s. ' + 'Read more: http://react-dnd.github.io/react-dnd/docs/api/drag-source', spec);\n var createSource = createSourceFactory_1.default(spec);\n invariant(typeof collect === 'function', 'Expected \"collect\" provided as the third argument to DragSource to be ' + 'a function that returns a plain object of props to inject. ' + 'Instead, received %s. ' + 'Read more: http://react-dnd.github.io/react-dnd/docs/api/drag-source', collect);\n invariant(discount_lodash_1.isPlainObject(options), 'Expected \"options\" provided as the fourth argument to DragSource to be ' + 'a plain object when specified. ' + 'Instead, received %s. ' + 'Read more: http://react-dnd.github.io/react-dnd/docs/api/drag-source', collect);\n return function decorateSource(DecoratedComponent) {\n return decorateHandler_1.default({\n containerDisplayName: 'DragSource',\n createHandler: createSource,\n registerHandler: registerSource_1.default,\n createConnector: function (backend) {\n return new SourceConnector_1.default(backend);\n },\n createMonitor: function (manager) {\n return new DragSourceMonitorImpl_1.default(manager);\n },\n DecoratedComponent: DecoratedComponent,\n getType: getType,\n collect: collect,\n options: options\n });\n };\n}\nexports.default = DragSource;","\"use strict\";\n\nfunction __export(m) {\n for (var p in m) if (!exports.hasOwnProperty(p)) exports[p] = m[p];\n}\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n__export(require(\"./Disposable\"));\n__export(require(\"./SerialDisposable\"));\n__export(require(\"./CompositeDisposable\"));","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar discount_lodash_1 = require(\"../discount_lodash\");\n/**\n * Provides a set of static methods for creating Disposables.\n * @param {Function} action Action to run during the first call to dispose.\n * The action is guaranteed to be run at most once.\n */\nvar Disposable = /** @class */function () {\n function Disposable(action) {\n this.isDisposed = false;\n this.action = discount_lodash_1.isFunction(action) ? action : discount_lodash_1.noop;\n }\n /**\n * Validates whether the given object is a disposable\n * @param {Object} Object to test whether it has a dispose method\n * @returns {Boolean} true if a disposable object, else false.\n */\n Disposable.isDisposable = function (d) {\n return d && discount_lodash_1.isFunction(d.dispose);\n };\n Disposable._fixup = function (result) {\n return Disposable.isDisposable(result) ? result : Disposable.empty;\n };\n /**\n * Creates a disposable object that invokes the specified action when disposed.\n * @param {Function} dispose Action to run during the first call to dispose.\n * The action is guaranteed to be run at most once.\n * @return {Disposable} The disposable object that runs the given action upon disposal.\n */\n Disposable.create = function (action) {\n return new Disposable(action);\n };\n /** Performs the task of cleaning up resources. */\n Disposable.prototype.dispose = function () {\n if (!this.isDisposed) {\n this.action();\n this.isDisposed = true;\n }\n };\n /**\n * Gets the disposable that does nothing when disposed.\n */\n Disposable.empty = {\n dispose: discount_lodash_1.noop\n };\n return Disposable;\n}();\nexports.Disposable = Disposable;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n/**\n * Represents a disposable resource whose underlying disposable resource can\n * be replaced by another disposable resource, causing automatic disposal of\n * the previous underlying disposable resource.\n */\nvar SerialDisposable = /** @class */function () {\n function SerialDisposable() {\n this.isDisposed = false;\n }\n /**\n * Gets the underlying disposable.\n * @returns {Any} the underlying disposable.\n */\n SerialDisposable.prototype.getDisposable = function () {\n return this.current;\n };\n SerialDisposable.prototype.setDisposable = function (value) {\n var shouldDispose = this.isDisposed;\n if (!shouldDispose) {\n var old = this.current;\n this.current = value;\n if (old) {\n old.dispose();\n }\n }\n if (shouldDispose && value) {\n value.dispose();\n }\n };\n /** Performs the task of cleaning up resources. */\n SerialDisposable.prototype.dispose = function () {\n if (!this.isDisposed) {\n this.isDisposed = true;\n var old = this.current;\n this.current = undefined;\n if (old) {\n old.dispose();\n }\n }\n };\n return SerialDisposable;\n}();\nexports.SerialDisposable = SerialDisposable;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n/**\n * Represents a group of disposable resources that are disposed together.\n * @constructor\n */\nvar CompositeDisposable = /** @class */function () {\n function CompositeDisposable() {\n var disposables = [];\n for (var _i = 0; _i < arguments.length; _i++) {\n disposables[_i] = arguments[_i];\n }\n this.isDisposed = false;\n this.disposables = disposables;\n }\n /**\n * Adds a disposable to the CompositeDisposable or disposes the disposable if the CompositeDisposable is disposed.\n * @param {Any} item Disposable to add.\n */\n CompositeDisposable.prototype.add = function (item) {\n if (this.isDisposed) {\n item.dispose();\n } else {\n this.disposables.push(item);\n }\n };\n /**\n * Removes and disposes the first occurrence of a disposable from the CompositeDisposable.\n * @param {Any} item Disposable to remove.\n * @returns {Boolean} true if found; false otherwise.\n */\n CompositeDisposable.prototype.remove = function (item) {\n var shouldDispose = false;\n if (!this.isDisposed) {\n var idx = this.disposables.indexOf(item);\n if (idx !== -1) {\n shouldDispose = true;\n this.disposables.splice(idx, 1);\n item.dispose();\n }\n }\n return shouldDispose;\n };\n /**\n * Disposes all disposables in the group and removes them from the group but\n * does not dispose the CompositeDisposable.\n */\n CompositeDisposable.prototype.clear = function () {\n if (!this.isDisposed) {\n var len = this.disposables.length;\n var currentDisposables = new Array(len);\n for (var i = 0; i < len; i++) {\n currentDisposables[i] = this.disposables[i];\n }\n this.disposables = [];\n for (var i = 0; i < len; i++) {\n currentDisposables[i].dispose();\n }\n }\n };\n /**\n * Disposes all disposables in the group and removes them from the group.\n */\n CompositeDisposable.prototype.dispose = function () {\n if (!this.isDisposed) {\n this.isDisposed = true;\n var len = this.disposables.length;\n var currentDisposables = new Array(len);\n for (var i = 0; i < len; i++) {\n currentDisposables[i] = this.disposables[i];\n }\n this.disposables = [];\n for (var i = 0; i < len; i++) {\n currentDisposables[i].dispose();\n }\n }\n };\n return CompositeDisposable;\n}();\nexports.CompositeDisposable = CompositeDisposable;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar getDecoratedComponent_1 = require(\"./utils/getDecoratedComponent\");\nvar discount_lodash_1 = require(\"./utils/discount_lodash\");\nvar invariant = require('invariant');\nvar ALLOWED_SPEC_METHODS = ['canDrag', 'beginDrag', 'isDragging', 'endDrag'];\nvar REQUIRED_SPEC_METHODS = ['beginDrag'];\nvar SourceImpl = /** @class */function () {\n function SourceImpl(spec, monitor, ref) {\n var _this = this;\n this.spec = spec;\n this.monitor = monitor;\n this.ref = ref;\n this.props = null;\n this.beginDrag = function () {\n if (!_this.props) {\n return;\n }\n var item = _this.spec.beginDrag(_this.props, _this.monitor, _this.ref.current);\n if (process.env.NODE_ENV !== 'production') {\n invariant(discount_lodash_1.isPlainObject(item), 'beginDrag() must return a plain object that represents the dragged item. ' + 'Instead received %s. ' + 'Read more: http://react-dnd.github.io/react-dnd/docs/api/drag-source', item);\n }\n return item;\n };\n }\n SourceImpl.prototype.receiveProps = function (props) {\n this.props = props;\n };\n SourceImpl.prototype.canDrag = function () {\n if (!this.props) {\n return false;\n }\n if (!this.spec.canDrag) {\n return true;\n }\n return this.spec.canDrag(this.props, this.monitor);\n };\n SourceImpl.prototype.isDragging = function (globalMonitor, sourceId) {\n if (!this.props) {\n return false;\n }\n if (!this.spec.isDragging) {\n return sourceId === globalMonitor.getSourceId();\n }\n return this.spec.isDragging(this.props, this.monitor);\n };\n SourceImpl.prototype.endDrag = function () {\n if (!this.props) {\n return;\n }\n if (!this.spec.endDrag) {\n return;\n }\n this.spec.endDrag(this.props, this.monitor, getDecoratedComponent_1.getDecoratedComponent(this.ref));\n };\n return SourceImpl;\n}();\nfunction createSourceFactory(spec) {\n Object.keys(spec).forEach(function (key) {\n invariant(ALLOWED_SPEC_METHODS.indexOf(key) > -1, 'Expected the drag source specification to only have ' + 'some of the following keys: %s. ' + 'Instead received a specification with an unexpected \"%s\" key. ' + 'Read more: http://react-dnd.github.io/react-dnd/docs/api/drag-source', ALLOWED_SPEC_METHODS.join(', '), key);\n invariant(typeof spec[key] === 'function', 'Expected %s in the drag source specification to be a function. ' + 'Instead received a specification with %s: %s. ' + 'Read more: http://react-dnd.github.io/react-dnd/docs/api/drag-source', key, key, spec[key]);\n });\n REQUIRED_SPEC_METHODS.forEach(function (key) {\n invariant(typeof spec[key] === 'function', 'Expected %s in the drag source specification to be a function. ' + 'Instead received a specification with %s: %s. ' + 'Read more: http://react-dnd.github.io/react-dnd/docs/api/drag-source', key, key, spec[key]);\n });\n return function createSource(monitor, ref) {\n return new SourceImpl(spec, monitor, ref);\n };\n}\nexports.default = createSourceFactory;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nvar react_1 = require(\"react\");\nvar invariant = require('invariant');\nfunction setRef(ref, node) {\n if (typeof ref === 'function') {\n ref(node);\n } else {\n ref.current = node;\n }\n}\nfunction cloneWithRef(element, newRef) {\n var previousRef = element.ref;\n invariant(typeof previousRef !== 'string', 'Cannot connect React DnD to an element with an existing string ref. ' + 'Please convert it to use a callback ref instead, or wrap it into a or{index + 1}
\n{step.description}
\n{step.description_2}
\nSteps
\n { this.renderStepNumber() }\n\n Title: \n {onlyTextContent ? \"Undefined\" : snippetName}\n
\n ) : (\n \"\"\n )}\n {snippetAudio ? (\n\n Audio: \n {snippetAudio.slice(0, 20)}\n
\n ) : (\n \"\"\n )}\n {snippetImageCount ? (\n\n Image: \n {snippetImageCount} images uploaded\n
\n ) : (\n \"\"\n )}\n {snippetVideo ? (\n\n Video: \n {snippetVideo.slice(0, 20)}\n
\n ) : (\n \"\"\n )}\nLanguage: {language.english_name}
\n\n Title : \n {translation.title || 'Undefined'}\n
\n\n Subtitle : \n {translation.subtitle || 'Undefined'}\n
\n\n {locales.content}\n
\n\n {locales.contentDefault}\n
\n );\n }\n return null;\n }\n\n renderModalContent() {\n return (\n