s wrapping the current active timespan (either in editing or in drag-n-drop)\n * @param {Object} parentDiv - parent header of the active timespan\n * @param {Array} allItems - all the items in the structured metadata\n */\n\n }, {\n key: \"findWrapperHeaders\",\n value: function findWrapperHeaders(parentDiv, allItems) {\n var wrapperHeadings = {\n before: null,\n after: null\n };\n var grandParentDiv = this.getParentDiv(parentDiv, allItems);\n\n if (grandParentDiv != null) {\n var grandParentItems = grandParentDiv.items.filter(function (item) {\n return item.type !== 'optional';\n });\n var parentIndex = grandParentItems.map(function (item) {\n return item.label;\n }).indexOf(parentDiv.label);\n wrapperHeadings.before = grandParentItems[parentIndex - 1] !== undefined ? grandParentItems[parentIndex - 1] : null;\n wrapperHeadings.after = grandParentItems[parentIndex + 1] !== undefined ? grandParentItems[parentIndex + 1] : null;\n }\n\n return wrapperHeadings;\n }\n /**\n * Get all items in data structure of type 'div' or 'span'\n * @param {Array} json\n * @returns {Array} - all stripped down objects of type in the entire structured metadata collection\n */\n\n }, {\n key: \"getItemsOfType\",\n value: function getItemsOfType() {\n var type = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 'div';\n var items = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];\n var options = []; // Recursive function to search the whole data structure\n\n var getItems = function getItems(items) {\n var _iteratorNormalCompletion3 = true;\n var _didIteratorError3 = false;\n var _iteratorError3 = undefined;\n\n try {\n for (var _iterator3 = items[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {\n var item = _step3.value;\n\n if (item.type === type) {\n var currentObj = _objectSpread({}, item);\n\n delete currentObj.items;\n options.push(currentObj);\n }\n\n if (item.items) {\n getItems(item.items);\n }\n }\n } catch (err) {\n _didIteratorError3 = true;\n _iteratorError3 = err;\n } finally {\n try {\n if (!_iteratorNormalCompletion3 && _iterator3[\"return\"] != null) {\n _iterator3[\"return\"]();\n }\n } finally {\n if (_didIteratorError3) {\n throw _iteratorError3;\n }\n }\n }\n };\n\n getItems(items);\n return options;\n }\n }, {\n key: \"getParentDiv\",\n value: function getParentDiv(child, allItems) {\n var foundDiv = null;\n\n var findItem = function findItem(child, items) {\n if (items && items.length > 0) {\n var _iteratorNormalCompletion4 = true;\n var _didIteratorError4 = false;\n var _iteratorError4 = undefined;\n\n try {\n for (var _iterator4 = items[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {\n var item = _step4.value;\n\n if (item.items) {\n var childItem = item.items.filter(function (currentChild) {\n return child.id === currentChild.id;\n }); // Found it\n\n if (childItem.length > 0) {\n foundDiv = item;\n break;\n }\n\n findItem(child, item.items);\n }\n }\n } catch (err) {\n _didIteratorError4 = true;\n _iteratorError4 = err;\n } finally {\n try {\n if (!_iteratorNormalCompletion4 && _iterator4[\"return\"] != null) {\n _iterator4[\"return\"]();\n }\n } finally {\n if (_didIteratorError4) {\n throw _iteratorError4;\n }\n }\n }\n }\n };\n\n findItem(child, allItems);\n return foundDiv;\n }\n /**\n * Overall logic is to find existing before and after spans for the new object (time flow), and then\n * their parent 'divs' would be valid headings.\n * @param {Object} newSpan - New timespan created with values supplied by the user\n * @param {Object} wrapperSpans Object representing before and after spans of newSpan (if they exist)\n * @param {Array} allItems - All structural metadata items in tree\n * @return {Array} - of valid
objects in structural metadata tree\n */\n\n }, {\n key: \"getValidHeadings\",\n value: function getValidHeadings(newSpan, wrapperSpans, allItems) {\n var _this3 = this;\n\n var allValidHeadings = [];\n var sortedHeadings = [];\n var uniqueHeadings = []; // New timespan falls between timespans in the same parent\n\n var stuckInMiddle = false;\n var toMs = this.toMs;\n var before = wrapperSpans.before,\n after = wrapperSpans.after;\n var allHeadings = this.getItemsOfType('root', allItems).concat(this.getItemsOfType('div', allItems)); // Explore possible headings traversing outwards from a suggested heading\n\n var exploreOutwards = function exploreOutwards(heading) {\n var invalid = false;\n\n var parentHeading = _this3.getParentDiv(heading, allItems);\n\n var newBegin = newSpan.begin,\n newEnd = newSpan.end;\n\n if (parentHeading && !stuckInMiddle) {\n var headingIndex = parentHeading.items.map(function (item) {\n return item.id;\n }).indexOf(heading.id);\n var siblings = parentHeading.items;\n siblings.forEach(function (sibling, i) {\n if (sibling.type === 'span') {\n var begin = sibling.begin,\n end = sibling.end;\n\n if (toMs(newEnd) < toMs(begin) && i < headingIndex) {\n invalid = true;\n }\n\n if (toMs(newBegin) > toMs(end) && i > headingIndex) {\n invalid = true;\n }\n }\n });\n\n if (!invalid) {\n allValidHeadings.push(parentHeading);\n exploreOutwards(parentHeading);\n } else {\n return;\n }\n }\n }; // Find relevant headings traversing into suggested headings\n\n\n var exploreInwards = function exploreInwards(wrapperParent, wrapperSpan, isBefore) {\n var spanIndex = wrapperParent.items.map(function (item) {\n return item.id;\n }).indexOf(wrapperSpan.id);\n var divsAfter = [],\n divsBefore = [];\n\n if (isBefore) {\n divsAfter = wrapperParent.items.filter(function (item, i) {\n return i > spanIndex;\n });\n\n var nextDivs = _this3.getItemsAfter(wrapperParent, allItems, []);\n\n divsAfter = divsAfter.concat(nextDivs);\n } else {\n divsBefore = wrapperParent.items.filter(function (item, i) {\n return i < spanIndex;\n });\n }\n\n var allDivs = _this3.getItemsOfType('div', divsAfter.concat(divsBefore));\n\n return allDivs;\n };\n\n if (!before && !after) {\n allValidHeadings = allHeadings;\n }\n\n if (before) {\n var parentBefore = this.getParentDiv(before, allItems);\n allValidHeadings.push(parentBefore);\n\n if (!after) {\n var headings = exploreInwards(parentBefore, before, true);\n allValidHeadings = allValidHeadings.concat(headings);\n }\n }\n\n if (after) {\n var parentAfter = this.getParentDiv(after, allItems);\n allValidHeadings.push(parentAfter);\n\n if (!before) {\n var _headings = exploreInwards(parentAfter, after, false);\n\n allValidHeadings = allValidHeadings.concat(_headings);\n }\n }\n\n if (before && after) {\n var _parentBefore = this.getParentDiv(before, allItems);\n\n var _parentAfter = this.getParentDiv(after, allItems);\n\n if (_parentBefore.id === _parentAfter.id) {\n stuckInMiddle = true;\n allValidHeadings.push(_parentBefore);\n }\n }\n\n allValidHeadings.map(function (heading) {\n return exploreOutwards(heading);\n }); // Sort valid headings to comply with the order in the metadata structure\n\n allHeadings.forEach(function (key) {\n var found = false;\n allValidHeadings.filter(function (heading) {\n if (!found && heading.label === key.label) {\n var items = heading.items,\n cloneWOItems = (0, _objectWithoutProperties2[\"default\"])(heading, [\"items\"]);\n sortedHeadings.push(cloneWOItems);\n found = true;\n return false;\n } else {\n return true;\n }\n });\n }); // Filter the duplicated headings\n\n sortedHeadings.map(function (heading) {\n var indexIn = uniqueHeadings.map(function (h) {\n return h.id;\n }).indexOf(heading.id);\n\n if (indexIn === -1) {\n uniqueHeadings.push(heading);\n }\n });\n return uniqueHeadings;\n }\n /**\n * Get items after a given item in the structure\n * @param {Object} currentItem\n * @param {Array} allItems all items in the structure\n * @param {Array} nextDivs heading items after the current item\n */\n\n }, {\n key: \"getItemsAfter\",\n value: function getItemsAfter(currentItem, allItems, nextDivs) {\n var parentItem = this.getParentDiv(currentItem, allItems);\n\n if (parentItem) {\n var currentIndex = parentItem.items.map(function (item) {\n return item.id;\n }).indexOf(currentItem.id);\n var nextItem = parentItem.items.filter(function (item, i) {\n return i > currentIndex;\n });\n nextDivs = nextDivs.concat(nextItem);\n\n if (this.getParentDiv(parentItem, allItems)) {\n return this.getItemsAfter(parentItem, allItems, nextDivs);\n }\n }\n\n return nextDivs;\n }\n /**\n * Helper function which handles React Dnd's dropping of a dragSource onto a dropTarget\n * It needs to re-arrange the data structure to reflect the new positions\n * @param {Object} dragSource - a minimal object React DnD uses with only the id value\n * @param {Object} dropTarget\n * @param {Array} allItems\n * @returns {Array}\n */\n\n }, {\n key: \"handleListItemDrop\",\n value: function handleListItemDrop(dragSource, dropTarget, allItems) {\n var clonedItems = (0, _lodash.cloneDeep)(allItems);\n var itemToMove = this.findItem(dragSource.id, clonedItems); // Slice out previous position of itemToMove\n\n var itemToMoveParent = this.getParentDiv(itemToMove, clonedItems);\n var itemToMoveItemIndex = itemToMoveParent.items.map(function (item) {\n return item.id;\n }).indexOf(itemToMove.id);\n itemToMoveParent.items.splice(itemToMoveItemIndex, 1); // Place itemToMove right after the placeholder array position\n\n var dropTargetParent = this.getParentDiv(dropTarget, clonedItems);\n var dropTargetItemIndex = dropTargetParent.items.map(function (item) {\n return item.id;\n }).indexOf(dropTarget.id);\n dropTargetParent.items.splice(dropTargetItemIndex, 0, itemToMove); // Get rid of all placeholder elements\n\n return this.removeDropTargets(clonedItems);\n }\n /**\n * Insert a new heading as child of an existing heading\n * @param {Object} obj - new heading object to insert\n * @param {Array} allItems - The entire structured metadata collection\n * @returns {Array} - The updated structured metadata collection, with new object inserted\n */\n\n }, {\n key: \"insertNewHeader\",\n value: function insertNewHeader(obj, allItems) {\n var clonedItems = (0, _lodash.cloneDeep)(allItems);\n var foundDiv = this.findItem(obj.headingChildOf, clonedItems) || clonedItems[0]; // If children exist, add to list\n\n if (foundDiv) {\n foundDiv.items.push({\n id: (0, _v[\"default\"])(),\n type: 'div',\n label: obj.headingTitle,\n items: []\n });\n }\n\n return clonedItems;\n }\n /**\n * Insert a new timespan as child of an existing heading\n * @param {Object} obj - object of form values submitted\n * @param {Array} allItems - The entire structured metadata collection\n * @returns ({Object}, {Array}) - (New span, The updated structured metadata collection, with new object inserted)\n */\n\n }, {\n key: \"insertNewTimespan\",\n value: function insertNewTimespan(obj, allItems) {\n var _this4 = this;\n\n var clonedItems = (0, _lodash.cloneDeep)(allItems);\n var foundDiv = this.findItem(obj.timespanChildOf, clonedItems); // Timespan related to values\n\n var spanObj = this.createSpanObject(obj); // Index the new timespan to be inserted\n\n var insertIndex = 0;\n\n var getParentOfSpan = function getParentOfSpan(item) {\n var inFoundDiv = false;\n var closestSibling = null;\n var siblings = foundDiv.items;\n siblings.map(function (sibling) {\n if (sibling.id === item.id) {\n inFoundDiv = true;\n closestSibling = sibling;\n }\n });\n\n if (!inFoundDiv) {\n var parentItem = _this4.getParentDiv(item, allItems);\n\n if (parentItem) {\n closestSibling = getParentOfSpan(parentItem);\n }\n }\n\n return closestSibling;\n };\n\n if (foundDiv) {\n var allSpans = this.getItemsOfType('span', allItems);\n\n var _this$findWrapperSpan = this.findWrapperSpans(spanObj, allSpans),\n before = _this$findWrapperSpan.before,\n after = _this$findWrapperSpan.after;\n\n if (before) {\n var siblingBefore = getParentOfSpan(before);\n\n if (siblingBefore) {\n insertIndex = foundDiv.items.map(function (item) {\n return item.id;\n }).indexOf(siblingBefore.id) + 1;\n }\n } else if (after) {\n var siblingAfter = getParentOfSpan(after);\n\n if (siblingAfter) {\n var siblingAfterIndex = foundDiv.items.map(function (item) {\n return item.id;\n }).indexOf(siblingAfter.id);\n insertIndex = siblingAfterIndex === 0 ? 0 : siblingAfterIndex - 1;\n }\n } else {\n insertIndex = foundDiv.items.length + 1;\n }\n } // Insert new span at appropriate index\n\n\n foundDiv.items.splice(insertIndex, 0, spanObj);\n return {\n newSpan: spanObj,\n updatedData: clonedItems\n };\n }\n /**\n * Recursive function to clean out any 'active' drag item property in the data structure\n * @param {Array} allItems\n * @returns {Array}\n */\n\n }, {\n key: \"removeActiveDragSources\",\n value: function removeActiveDragSources(allItems) {\n var removeActive = function removeActive(parent) {\n if (!parent.items) {\n if (parent.active) {\n parent.active = false;\n }\n\n return parent;\n }\n\n parent.items = parent.items.map(function (child) {\n return removeActive(child);\n });\n return parent;\n };\n\n var cleanItems = removeActive(allItems[0]);\n return [cleanItems];\n }\n /**\n * Recursive function to remove all temporary Drop Target objects from the structured metadata items\n * @param {Array} allItems\n */\n\n }, {\n key: \"removeDropTargets\",\n value: function removeDropTargets(allItems) {\n var clonedItems = (0, _lodash.cloneDeep)(allItems);\n\n var removeFromTree = function removeFromTree(parent, childTypeToRemove) {\n if (!parent.items) {\n return parent;\n }\n\n parent.items = parent.items.filter(function (child) {\n return child.type !== childTypeToRemove;\n }).map(function (child) {\n return removeFromTree(child, childTypeToRemove);\n });\n return parent;\n };\n\n var cleanItems = removeFromTree(clonedItems[0], 'optional');\n return [cleanItems];\n }\n /**\n * Does 'before' time start prior to 'end' time?\n * @param {String} begin form intput value\n * @param {String} end form input value\n * @return {Boolean}\n */\n\n }, {\n key: \"validateBeforeEndTimeOrder\",\n value: function validateBeforeEndTimeOrder(begin, end) {\n if (!begin || !end) {\n return true;\n }\n\n if (this.toMs(begin) >= this.toMs(end)) {\n return false;\n }\n\n return true;\n }\n }, {\n key: \"validTimeFormat\",\n value: function validTimeFormat(value) {\n return value && value.split(':').length === 3;\n }\n /**\n * This function adds a unique, front-end only id, to every object in the data structure\n * @param {Array} structureJS\n * @returns {Array}\n */\n\n }, {\n key: \"addUUIds\",\n value: function addUUIds(structureJS) {\n var structureWithIds = (0, _lodash.cloneDeep)(structureJS); // Recursively loop through data structure\n\n var fn = function fn(items) {\n var _iteratorNormalCompletion5 = true;\n var _didIteratorError5 = false;\n var _iteratorError5 = undefined;\n\n try {\n for (var _iterator5 = items[Symbol.iterator](), _step5; !(_iteratorNormalCompletion5 = (_step5 = _iterator5.next()).done); _iteratorNormalCompletion5 = true) {\n var item = _step5.value; // Create and add an id\n\n item.id = (0, _v[\"default\"])(); // Send child items back into the function\n\n if (item.items && item.items.length > 0) {\n fn(item.items);\n }\n }\n } catch (err) {\n _didIteratorError5 = true;\n _iteratorError5 = err;\n } finally {\n try {\n if (!_iteratorNormalCompletion5 && _iterator5[\"return\"] != null) {\n _iterator5[\"return\"]();\n }\n } finally {\n if (_didIteratorError5) {\n throw _iteratorError5;\n }\n }\n }\n };\n\n fn(structureWithIds);\n return structureWithIds;\n }\n /**\n * Mark the top element as 'root' to help when creating list items\n * The top elemetn should not have a delete icon\n * @param {Array} smData - array of structured metadata\n */\n\n }, {\n key: \"markRootElement\",\n value: function markRootElement(smData) {\n if (smData.length > 0) {\n smData[0].type = 'root';\n }\n }\n /**\n * Convert hh:mm:ss to milliseconds to make calculations consistent\n * @param {String} strTime form input value\n */\n\n }, {\n key: \"toMs\",\n value: function toMs(strTime) {\n var _strTime$split$revers = strTime.split(':').reverse(),\n _strTime$split$revers2 = (0, _slicedToArray2[\"default\"])(_strTime$split$revers, 3),\n seconds = _strTime$split$revers2[0],\n minutes = _strTime$split$revers2[1],\n hours = _strTime$split$revers2[2];\n\n var hoursInS = hours ? parseInt(hours) * 3600 : 0;\n var minutesInS = minutes ? parseInt(minutes) * 60 : 0;\n var secondsNum = seconds === '' ? 0.0 : parseFloat(seconds);\n var timeSeconds = hoursInS + minutesInS + secondsNum;\n return timeSeconds * 1000;\n }\n /**\n * Convert seconds to string format hh:mm:ss.ms\n * @param {Number} secTime - time in seconds\n */\n\n }, {\n key: \"toHHmmss\",\n value: function toHHmmss(secTime) {\n var sec_num = this.roundOff(secTime);\n var hours = Math.floor(sec_num / 3600);\n var minutes = Math.floor(sec_num % 3600 / 60);\n var seconds = sec_num - minutes * 60 - hours * 3600;\n var hourStr = hours < 10 ? \"0\".concat(hours) : \"\".concat(hours);\n var minStr = minutes < 10 ? \"0\".concat(minutes) : \"\".concat(minutes);\n var secStr = seconds.toFixed(3);\n secStr = seconds < 10 ? \"0\".concat(secStr) : \"\".concat(secStr);\n return \"\".concat(hourStr, \":\").concat(minStr, \":\").concat(secStr);\n }\n }, {\n key: \"roundOff\",\n value: function roundOff(value) {\n var valueString = '';\n\n var _value$toString$split = value.toString().split('.'),\n _value$toString$split2 = (0, _slicedToArray2[\"default\"])(_value$toString$split, 2),\n intVal = _value$toString$split2[0],\n decVal = _value$toString$split2[1];\n\n if (!decVal) {\n valueString = intVal;\n } else {\n valueString = intVal + '.' + decVal.substring(0, 3);\n }\n\n return parseFloat(valueString);\n }\n /**\n * Remove a given key in the each object in the structure\n * @param {Array} allitems - smData\n * @param {String} key - object key to be removed in the structure\n */\n\n }, {\n key: \"filterObjectKey\",\n value: function filterObjectKey(allitems, key) {\n var clonedItems = (0, _lodash.cloneDeep)(allitems);\n\n var removeKey = function removeKey(items) {\n var _iteratorNormalCompletion6 = true;\n var _didIteratorError6 = false;\n var _iteratorError6 = undefined;\n\n try {\n for (var _iterator6 = items[Symbol.iterator](), _step6; !(_iteratorNormalCompletion6 = (_step6 = _iterator6.next()).done); _iteratorNormalCompletion6 = true) {\n var item = _step6.value;\n\n if (key in item) {\n delete item.active;\n }\n\n if (item.items && item.items.length > 0) {\n removeKey(item.items);\n }\n }\n } catch (err) {\n _didIteratorError6 = true;\n _iteratorError6 = err;\n } finally {\n try {\n if (!_iteratorNormalCompletion6 && _iterator6[\"return\"] != null) {\n _iterator6[\"return\"]();\n }\n } finally {\n if (_didIteratorError6) {\n throw _iteratorError6;\n }\n }\n }\n };\n\n removeKey(clonedItems, key);\n return clonedItems;\n }\n }]);\n return StructuralMetadataUtils;\n}();\n\nexports[\"default\"] = StructuralMetadataUtils;","import { useEffect, useRef } from 'react';\n/**\n * Creates a `Ref` whose value is updated in an effect, ensuring the most recent\n * value is the one rendered with. Generally only required for Concurrent mode usage\n * where previous work in `render()` may be discarded befor being used.\n *\n * This is safe to access in an event handler.\n *\n * @param value The `Ref` value\n */\n\nfunction useCommittedRef(value) {\n var ref = useRef(value);\n useEffect(function () {\n ref.current = value;\n }, [value]);\n return ref;\n}\n\nexport default useCommittedRef;","import { useCallback } from 'react';\nimport useCommittedRef from './useCommittedRef';\nexport default function useEventCallback(fn) {\n var ref = useCommittedRef(fn);\n return useCallback(function () {\n return ref.current && ref.current.apply(ref, arguments);\n }, [ref]);\n}","function _typeof(obj) { if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\nvar g; // This works in non-strict mode\n\ng = function () {\n return this;\n}();\n\ntry {\n // This works if eval is allowed (see CSP)\n g = g || new Function(\"return this\")();\n} catch (e) {\n // This works if the window reference is available\n if ((typeof window === \"undefined\" ? \"undefined\" : _typeof(window)) === \"object\") g = window;\n} // g can still be undefined, but nothing to do about it...\n// We return undefined, instead of nothing here, so it's\n// easier to handle this case. if(!global) { ...}\n\n\nmodule.exports = g;","function _typeof(obj) { if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\n/**\n * @license\n * Lodash
\n * Copyright OpenJS Foundation and other contributors
\n * Released under MIT license
\n * Based on Underscore.js 1.8.3 \n * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors\n */\n;\n(function () {\n /** Used as a safe reference for `undefined` in pre-ES5 environments. */\n var undefined;\n /** Used as the semantic version number. */\n\n var VERSION = '4.17.20';\n /** Used as the size to enable large array optimizations. */\n\n var LARGE_ARRAY_SIZE = 200;\n /** Error message constants. */\n\n var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.',\n FUNC_ERROR_TEXT = 'Expected a function';\n /** Used to stand-in for `undefined` hash values. */\n\n var HASH_UNDEFINED = '__lodash_hash_undefined__';\n /** Used as the maximum memoize cache size. */\n\n var MAX_MEMOIZE_SIZE = 500;\n /** Used as the internal argument placeholder. */\n\n var PLACEHOLDER = '__lodash_placeholder__';\n /** Used to compose bitmasks for cloning. */\n\n var CLONE_DEEP_FLAG = 1,\n CLONE_FLAT_FLAG = 2,\n CLONE_SYMBOLS_FLAG = 4;\n /** Used to compose bitmasks for value comparisons. */\n\n var COMPARE_PARTIAL_FLAG = 1,\n COMPARE_UNORDERED_FLAG = 2;\n /** Used to compose bitmasks for function metadata. */\n\n var WRAP_BIND_FLAG = 1,\n WRAP_BIND_KEY_FLAG = 2,\n WRAP_CURRY_BOUND_FLAG = 4,\n WRAP_CURRY_FLAG = 8,\n WRAP_CURRY_RIGHT_FLAG = 16,\n WRAP_PARTIAL_FLAG = 32,\n WRAP_PARTIAL_RIGHT_FLAG = 64,\n WRAP_ARY_FLAG = 128,\n WRAP_REARG_FLAG = 256,\n WRAP_FLIP_FLAG = 512;\n /** Used as default options for `_.truncate`. */\n\n var DEFAULT_TRUNC_LENGTH = 30,\n DEFAULT_TRUNC_OMISSION = '...';\n /** Used to detect hot functions by number of calls within a span of milliseconds. */\n\n var HOT_COUNT = 800,\n HOT_SPAN = 16;\n /** Used to indicate the type of lazy iteratees. */\n\n var LAZY_FILTER_FLAG = 1,\n LAZY_MAP_FLAG = 2,\n LAZY_WHILE_FLAG = 3;\n /** Used as references for various `Number` constants. */\n\n var INFINITY = 1 / 0,\n MAX_SAFE_INTEGER = 9007199254740991,\n MAX_INTEGER = 1.7976931348623157e+308,\n NAN = 0 / 0;\n /** Used as references for the maximum length and index of an array. */\n\n var MAX_ARRAY_LENGTH = 4294967295,\n MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,\n HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;\n /** Used to associate wrap methods with their bit flags. */\n\n var wrapFlags = [['ary', WRAP_ARY_FLAG], ['bind', WRAP_BIND_FLAG], ['bindKey', WRAP_BIND_KEY_FLAG], ['curry', WRAP_CURRY_FLAG], ['curryRight', WRAP_CURRY_RIGHT_FLAG], ['flip', WRAP_FLIP_FLAG], ['partial', WRAP_PARTIAL_FLAG], ['partialRight', WRAP_PARTIAL_RIGHT_FLAG], ['rearg', WRAP_REARG_FLAG]];\n /** `Object#toString` result references. */\n\n var argsTag = '[object Arguments]',\n arrayTag = '[object Array]',\n asyncTag = '[object AsyncFunction]',\n boolTag = '[object Boolean]',\n dateTag = '[object Date]',\n domExcTag = '[object DOMException]',\n errorTag = '[object Error]',\n funcTag = '[object Function]',\n genTag = '[object GeneratorFunction]',\n mapTag = '[object Map]',\n numberTag = '[object Number]',\n nullTag = '[object Null]',\n objectTag = '[object Object]',\n promiseTag = '[object Promise]',\n proxyTag = '[object Proxy]',\n regexpTag = '[object RegExp]',\n setTag = '[object Set]',\n stringTag = '[object String]',\n symbolTag = '[object Symbol]',\n undefinedTag = '[object Undefined]',\n weakMapTag = '[object WeakMap]',\n weakSetTag = '[object WeakSet]';\n var arrayBufferTag = '[object ArrayBuffer]',\n dataViewTag = '[object DataView]',\n float32Tag = '[object Float32Array]',\n float64Tag = '[object Float64Array]',\n int8Tag = '[object Int8Array]',\n int16Tag = '[object Int16Array]',\n int32Tag = '[object Int32Array]',\n uint8Tag = '[object Uint8Array]',\n uint8ClampedTag = '[object Uint8ClampedArray]',\n uint16Tag = '[object Uint16Array]',\n uint32Tag = '[object Uint32Array]';\n /** Used to match empty string literals in compiled template source. */\n\n var reEmptyStringLeading = /\\b__p \\+= '';/g,\n reEmptyStringMiddle = /\\b(__p \\+=) '' \\+/g,\n reEmptyStringTrailing = /(__e\\(.*?\\)|\\b__t\\)) \\+\\n'';/g;\n /** Used to match HTML entities and HTML characters. */\n\n var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,\n reUnescapedHtml = /[&<>\"']/g,\n reHasEscapedHtml = RegExp(reEscapedHtml.source),\n reHasUnescapedHtml = RegExp(reUnescapedHtml.source);\n /** Used to match template delimiters. */\n\n var reEscape = /<%-([\\s\\S]+?)%>/g,\n reEvaluate = /<%([\\s\\S]+?)%>/g,\n reInterpolate = /<%=([\\s\\S]+?)%>/g;\n /** Used to match property names within property paths. */\n\n var reIsDeepProp = /\\.|\\[(?:[^[\\]]*|([\"'])(?:(?!\\1)[^\\\\]|\\\\.)*?\\1)\\]/,\n reIsPlainProp = /^\\w*$/,\n rePropName = /[^.[\\]]+|\\[(?:(-?\\d+(?:\\.\\d+)?)|([\"'])((?:(?!\\2)[^\\\\]|\\\\.)*?)\\2)\\]|(?=(?:\\.|\\[\\])(?:\\.|\\[\\]|$))/g;\n /**\n * Used to match `RegExp`\n * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).\n */\n\n var reRegExpChar = /[\\\\^$.*+?()[\\]{}|]/g,\n reHasRegExpChar = RegExp(reRegExpChar.source);\n /** Used to match leading and trailing whitespace. */\n\n var reTrim = /^\\s+|\\s+$/g,\n reTrimStart = /^\\s+/,\n reTrimEnd = /\\s+$/;\n /** Used to match wrap detail comments. */\n\n var reWrapComment = /\\{(?:\\n\\/\\* \\[wrapped with .+\\] \\*\\/)?\\n?/,\n reWrapDetails = /\\{\\n\\/\\* \\[wrapped with (.+)\\] \\*/,\n reSplitDetails = /,? & /;\n /** Used to match words composed of alphanumeric characters. */\n\n var reAsciiWord = /[^\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\x7f]+/g;\n /** Used to match backslashes in property paths. */\n\n var reEscapeChar = /\\\\(\\\\)?/g;\n /**\n * Used to match\n * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).\n */\n\n var reEsTemplate = /\\$\\{([^\\\\}]*(?:\\\\.[^\\\\}]*)*)\\}/g;\n /** Used to match `RegExp` flags from their coerced string values. */\n\n var reFlags = /\\w*$/;\n /** Used to detect bad signed hexadecimal string values. */\n\n var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;\n /** Used to detect binary string values. */\n\n var reIsBinary = /^0b[01]+$/i;\n /** Used to detect host constructors (Safari). */\n\n var reIsHostCtor = /^\\[object .+?Constructor\\]$/;\n /** Used to detect octal string values. */\n\n var reIsOctal = /^0o[0-7]+$/i;\n /** Used to detect unsigned integer values. */\n\n var reIsUint = /^(?:0|[1-9]\\d*)$/;\n /** Used to match Latin Unicode letters (excluding mathematical operators). */\n\n var reLatin = /[\\xc0-\\xd6\\xd8-\\xf6\\xf8-\\xff\\u0100-\\u017f]/g;\n /** Used to ensure capturing order of template delimiters. */\n\n var reNoMatch = /($^)/;\n /** Used to match unescaped characters in compiled string literals. */\n\n var reUnescapedString = /['\\n\\r\\u2028\\u2029\\\\]/g;\n /** Used to compose unicode character classes. */\n\n var rsAstralRange = \"\\\\ud800-\\\\udfff\",\n rsComboMarksRange = \"\\\\u0300-\\\\u036f\",\n reComboHalfMarksRange = \"\\\\ufe20-\\\\ufe2f\",\n rsComboSymbolsRange = \"\\\\u20d0-\\\\u20ff\",\n rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,\n rsDingbatRange = \"\\\\u2700-\\\\u27bf\",\n rsLowerRange = 'a-z\\\\xdf-\\\\xf6\\\\xf8-\\\\xff',\n rsMathOpRange = '\\\\xac\\\\xb1\\\\xd7\\\\xf7',\n rsNonCharRange = '\\\\x00-\\\\x2f\\\\x3a-\\\\x40\\\\x5b-\\\\x60\\\\x7b-\\\\xbf',\n rsPunctuationRange = \"\\\\u2000-\\\\u206f\",\n rsSpaceRange = \" \\\\t\\\\x0b\\\\f\\\\xa0\\\\ufeff\\\\n\\\\r\\\\u2028\\\\u2029\\\\u1680\\\\u180e\\\\u2000\\\\u2001\\\\u2002\\\\u2003\\\\u2004\\\\u2005\\\\u2006\\\\u2007\\\\u2008\\\\u2009\\\\u200a\\\\u202f\\\\u205f\\\\u3000\",\n rsUpperRange = 'A-Z\\\\xc0-\\\\xd6\\\\xd8-\\\\xde',\n rsVarRange = \"\\\\ufe0e\\\\ufe0f\",\n rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;\n /** Used to compose unicode capture groups. */\n\n var rsApos = \"['\\u2019]\",\n rsAstral = '[' + rsAstralRange + ']',\n rsBreak = '[' + rsBreakRange + ']',\n rsCombo = '[' + rsComboRange + ']',\n rsDigits = '\\\\d+',\n rsDingbat = '[' + rsDingbatRange + ']',\n rsLower = '[' + rsLowerRange + ']',\n rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',\n rsFitz = \"\\\\ud83c[\\\\udffb-\\\\udfff]\",\n rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',\n rsNonAstral = '[^' + rsAstralRange + ']',\n rsRegional = \"(?:\\\\ud83c[\\\\udde6-\\\\uddff]){2}\",\n rsSurrPair = \"[\\\\ud800-\\\\udbff][\\\\udc00-\\\\udfff]\",\n rsUpper = '[' + rsUpperRange + ']',\n rsZWJ = \"\\\\u200d\";\n /** Used to compose unicode regexes. */\n\n var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',\n rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',\n rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',\n rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',\n reOptMod = rsModifier + '?',\n rsOptVar = '[' + rsVarRange + ']?',\n rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',\n rsOrdLower = '\\\\d*(?:1st|2nd|3rd|(?![123])\\\\dth)(?=\\\\b|[A-Z_])',\n rsOrdUpper = '\\\\d*(?:1ST|2ND|3RD|(?![123])\\\\dTH)(?=\\\\b|[a-z_])',\n rsSeq = rsOptVar + reOptMod + rsOptJoin,\n rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,\n rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';\n /** Used to match apostrophes. */\n\n var reApos = RegExp(rsApos, 'g');\n /**\n * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and\n * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).\n */\n\n var reComboMark = RegExp(rsCombo, 'g');\n /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */\n\n var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');\n /** Used to match complex or compound words. */\n\n var reUnicodeWord = RegExp([rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')', rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')', rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower, rsUpper + '+' + rsOptContrUpper, rsOrdUpper, rsOrdLower, rsDigits, rsEmoji].join('|'), 'g');\n /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */\n\n var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange + rsComboRange + rsVarRange + ']');\n /** Used to detect strings that need a more robust regexp to match words. */\n\n var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;\n /** Used to assign default `context` object properties. */\n\n var contextProps = ['Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array', 'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object', 'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array', 'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap', '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout'];\n /** Used to make template sourceURLs easier to identify. */\n\n var templateCounter = -1;\n /** Used to identify `toStringTag` values of typed arrays. */\n\n var typedArrayTags = {};\n typedArrayTags[float32Tag] = typedArrayTags[float64Tag] = typedArrayTags[int8Tag] = typedArrayTags[int16Tag] = typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] = typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] = typedArrayTags[uint32Tag] = true;\n typedArrayTags[argsTag] = typedArrayTags[arrayTag] = typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] = typedArrayTags[dataViewTag] = typedArrayTags[dateTag] = typedArrayTags[errorTag] = typedArrayTags[funcTag] = typedArrayTags[mapTag] = typedArrayTags[numberTag] = typedArrayTags[objectTag] = typedArrayTags[regexpTag] = typedArrayTags[setTag] = typedArrayTags[stringTag] = typedArrayTags[weakMapTag] = false;\n /** Used to identify `toStringTag` values supported by `_.clone`. */\n\n var cloneableTags = {};\n cloneableTags[argsTag] = cloneableTags[arrayTag] = cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] = cloneableTags[boolTag] = cloneableTags[dateTag] = cloneableTags[float32Tag] = cloneableTags[float64Tag] = cloneableTags[int8Tag] = cloneableTags[int16Tag] = cloneableTags[int32Tag] = cloneableTags[mapTag] = cloneableTags[numberTag] = cloneableTags[objectTag] = cloneableTags[regexpTag] = cloneableTags[setTag] = cloneableTags[stringTag] = cloneableTags[symbolTag] = cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] = cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;\n cloneableTags[errorTag] = cloneableTags[funcTag] = cloneableTags[weakMapTag] = false;\n /** Used to map Latin Unicode letters to basic Latin letters. */\n\n var deburredLetters = {\n // Latin-1 Supplement block.\n '\\xc0': 'A',\n '\\xc1': 'A',\n '\\xc2': 'A',\n '\\xc3': 'A',\n '\\xc4': 'A',\n '\\xc5': 'A',\n '\\xe0': 'a',\n '\\xe1': 'a',\n '\\xe2': 'a',\n '\\xe3': 'a',\n '\\xe4': 'a',\n '\\xe5': 'a',\n '\\xc7': 'C',\n '\\xe7': 'c',\n '\\xd0': 'D',\n '\\xf0': 'd',\n '\\xc8': 'E',\n '\\xc9': 'E',\n '\\xca': 'E',\n '\\xcb': 'E',\n '\\xe8': 'e',\n '\\xe9': 'e',\n '\\xea': 'e',\n '\\xeb': 'e',\n '\\xcc': 'I',\n '\\xcd': 'I',\n '\\xce': 'I',\n '\\xcf': 'I',\n '\\xec': 'i',\n '\\xed': 'i',\n '\\xee': 'i',\n '\\xef': 'i',\n '\\xd1': 'N',\n '\\xf1': 'n',\n '\\xd2': 'O',\n '\\xd3': 'O',\n '\\xd4': 'O',\n '\\xd5': 'O',\n '\\xd6': 'O',\n '\\xd8': 'O',\n '\\xf2': 'o',\n '\\xf3': 'o',\n '\\xf4': 'o',\n '\\xf5': 'o',\n '\\xf6': 'o',\n '\\xf8': 'o',\n '\\xd9': 'U',\n '\\xda': 'U',\n '\\xdb': 'U',\n '\\xdc': 'U',\n '\\xf9': 'u',\n '\\xfa': 'u',\n '\\xfb': 'u',\n '\\xfc': 'u',\n '\\xdd': 'Y',\n '\\xfd': 'y',\n '\\xff': 'y',\n '\\xc6': 'Ae',\n '\\xe6': 'ae',\n '\\xde': 'Th',\n '\\xfe': 'th',\n '\\xdf': 'ss',\n // Latin Extended-A block.\n \"\\u0100\": 'A',\n \"\\u0102\": 'A',\n \"\\u0104\": 'A',\n \"\\u0101\": 'a',\n \"\\u0103\": 'a',\n \"\\u0105\": 'a',\n \"\\u0106\": 'C',\n \"\\u0108\": 'C',\n \"\\u010A\": 'C',\n \"\\u010C\": 'C',\n \"\\u0107\": 'c',\n \"\\u0109\": 'c',\n \"\\u010B\": 'c',\n \"\\u010D\": 'c',\n \"\\u010E\": 'D',\n \"\\u0110\": 'D',\n \"\\u010F\": 'd',\n \"\\u0111\": 'd',\n \"\\u0112\": 'E',\n \"\\u0114\": 'E',\n \"\\u0116\": 'E',\n \"\\u0118\": 'E',\n \"\\u011A\": 'E',\n \"\\u0113\": 'e',\n \"\\u0115\": 'e',\n \"\\u0117\": 'e',\n \"\\u0119\": 'e',\n \"\\u011B\": 'e',\n \"\\u011C\": 'G',\n \"\\u011E\": 'G',\n \"\\u0120\": 'G',\n \"\\u0122\": 'G',\n \"\\u011D\": 'g',\n \"\\u011F\": 'g',\n \"\\u0121\": 'g',\n \"\\u0123\": 'g',\n \"\\u0124\": 'H',\n \"\\u0126\": 'H',\n \"\\u0125\": 'h',\n \"\\u0127\": 'h',\n \"\\u0128\": 'I',\n \"\\u012A\": 'I',\n \"\\u012C\": 'I',\n \"\\u012E\": 'I',\n \"\\u0130\": 'I',\n \"\\u0129\": 'i',\n \"\\u012B\": 'i',\n \"\\u012D\": 'i',\n \"\\u012F\": 'i',\n \"\\u0131\": 'i',\n \"\\u0134\": 'J',\n \"\\u0135\": 'j',\n \"\\u0136\": 'K',\n \"\\u0137\": 'k',\n \"\\u0138\": 'k',\n \"\\u0139\": 'L',\n \"\\u013B\": 'L',\n \"\\u013D\": 'L',\n \"\\u013F\": 'L',\n \"\\u0141\": 'L',\n \"\\u013A\": 'l',\n \"\\u013C\": 'l',\n \"\\u013E\": 'l',\n \"\\u0140\": 'l',\n \"\\u0142\": 'l',\n \"\\u0143\": 'N',\n \"\\u0145\": 'N',\n \"\\u0147\": 'N',\n \"\\u014A\": 'N',\n \"\\u0144\": 'n',\n \"\\u0146\": 'n',\n \"\\u0148\": 'n',\n \"\\u014B\": 'n',\n \"\\u014C\": 'O',\n \"\\u014E\": 'O',\n \"\\u0150\": 'O',\n \"\\u014D\": 'o',\n \"\\u014F\": 'o',\n \"\\u0151\": 'o',\n \"\\u0154\": 'R',\n \"\\u0156\": 'R',\n \"\\u0158\": 'R',\n \"\\u0155\": 'r',\n \"\\u0157\": 'r',\n \"\\u0159\": 'r',\n \"\\u015A\": 'S',\n \"\\u015C\": 'S',\n \"\\u015E\": 'S',\n \"\\u0160\": 'S',\n \"\\u015B\": 's',\n \"\\u015D\": 's',\n \"\\u015F\": 's',\n \"\\u0161\": 's',\n \"\\u0162\": 'T',\n \"\\u0164\": 'T',\n \"\\u0166\": 'T',\n \"\\u0163\": 't',\n \"\\u0165\": 't',\n \"\\u0167\": 't',\n \"\\u0168\": 'U',\n \"\\u016A\": 'U',\n \"\\u016C\": 'U',\n \"\\u016E\": 'U',\n \"\\u0170\": 'U',\n \"\\u0172\": 'U',\n \"\\u0169\": 'u',\n \"\\u016B\": 'u',\n \"\\u016D\": 'u',\n \"\\u016F\": 'u',\n \"\\u0171\": 'u',\n \"\\u0173\": 'u',\n \"\\u0174\": 'W',\n \"\\u0175\": 'w',\n \"\\u0176\": 'Y',\n \"\\u0177\": 'y',\n \"\\u0178\": 'Y',\n \"\\u0179\": 'Z',\n \"\\u017B\": 'Z',\n \"\\u017D\": 'Z',\n \"\\u017A\": 'z',\n \"\\u017C\": 'z',\n \"\\u017E\": 'z',\n \"\\u0132\": 'IJ',\n \"\\u0133\": 'ij',\n \"\\u0152\": 'Oe',\n \"\\u0153\": 'oe',\n \"\\u0149\": \"'n\",\n \"\\u017F\": 's'\n };\n /** Used to map characters to HTML entities. */\n\n var htmlEscapes = {\n '&': '&',\n '<': '<',\n '>': '>',\n '\"': '"',\n \"'\": '''\n };\n /** Used to map HTML entities to characters. */\n\n var htmlUnescapes = {\n '&': '&',\n '<': '<',\n '>': '>',\n '"': '\"',\n ''': \"'\"\n };\n /** Used to escape characters for inclusion in compiled string literals. */\n\n var stringEscapes = {\n '\\\\': '\\\\',\n \"'\": \"'\",\n '\\n': 'n',\n '\\r': 'r',\n \"\\u2028\": 'u2028',\n \"\\u2029\": 'u2029'\n };\n /** Built-in method references without a dependency on `root`. */\n\n var freeParseFloat = parseFloat,\n freeParseInt = parseInt;\n /** Detect free variable `global` from Node.js. */\n\n var freeGlobal = (typeof global === \"undefined\" ? \"undefined\" : _typeof(global)) == 'object' && global && global.Object === Object && global;\n /** Detect free variable `self`. */\n\n var freeSelf = (typeof self === \"undefined\" ? \"undefined\" : _typeof(self)) == 'object' && self && self.Object === Object && self;\n /** Used as a reference to the global object. */\n\n var root = freeGlobal || freeSelf || Function('return this')();\n /** Detect free variable `exports`. */\n\n var freeExports = (typeof exports === \"undefined\" ? \"undefined\" : _typeof(exports)) == 'object' && exports && !exports.nodeType && exports;\n /** Detect free variable `module`. */\n\n var freeModule = freeExports && (typeof module === \"undefined\" ? \"undefined\" : _typeof(module)) == 'object' && module && !module.nodeType && module;\n /** Detect the popular CommonJS extension `module.exports`. */\n\n var moduleExports = freeModule && freeModule.exports === freeExports;\n /** Detect free variable `process` from Node.js. */\n\n var freeProcess = moduleExports && freeGlobal.process;\n /** Used to access faster Node.js helpers. */\n\n var nodeUtil = function () {\n try {\n // Use `util.types` for Node.js 10+.\n var types = freeModule && freeModule.require && freeModule.require('util').types;\n\n if (types) {\n return types;\n } // Legacy `process.binding('util')` for Node.js < 10.\n\n\n return freeProcess && freeProcess.binding && freeProcess.binding('util');\n } catch (e) {}\n }();\n /* Node.js helper references. */\n\n\n var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer,\n nodeIsDate = nodeUtil && nodeUtil.isDate,\n nodeIsMap = nodeUtil && nodeUtil.isMap,\n nodeIsRegExp = nodeUtil && nodeUtil.isRegExp,\n nodeIsSet = nodeUtil && nodeUtil.isSet,\n nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;\n /*--------------------------------------------------------------------------*/\n\n /**\n * A faster alternative to `Function#apply`, this function invokes `func`\n * with the `this` binding of `thisArg` and the arguments of `args`.\n *\n * @private\n * @param {Function} func The function to invoke.\n * @param {*} thisArg The `this` binding of `func`.\n * @param {Array} args The arguments to invoke `func` with.\n * @returns {*} Returns the result of `func`.\n */\n\n function apply(func, thisArg, args) {\n switch (args.length) {\n case 0:\n return func.call(thisArg);\n\n case 1:\n return func.call(thisArg, args[0]);\n\n case 2:\n return func.call(thisArg, args[0], args[1]);\n\n case 3:\n return func.call(thisArg, args[0], args[1], args[2]);\n }\n\n return func.apply(thisArg, args);\n }\n /**\n * A specialized version of `baseAggregator` for arrays.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} setter The function to set `accumulator` values.\n * @param {Function} iteratee The iteratee to transform keys.\n * @param {Object} accumulator The initial aggregated object.\n * @returns {Function} Returns `accumulator`.\n */\n\n\n function arrayAggregator(array, setter, iteratee, accumulator) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n var value = array[index];\n setter(accumulator, value, iteratee(value), array);\n }\n\n return accumulator;\n }\n /**\n * A specialized version of `_.forEach` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns `array`.\n */\n\n\n function arrayEach(array, iteratee) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (iteratee(array[index], index, array) === false) {\n break;\n }\n }\n\n return array;\n }\n /**\n * A specialized version of `_.forEachRight` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns `array`.\n */\n\n\n function arrayEachRight(array, iteratee) {\n var length = array == null ? 0 : array.length;\n\n while (length--) {\n if (iteratee(array[length], length, array) === false) {\n break;\n }\n }\n\n return array;\n }\n /**\n * A specialized version of `_.every` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if all elements pass the predicate check,\n * else `false`.\n */\n\n\n function arrayEvery(array, predicate) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (!predicate(array[index], index, array)) {\n return false;\n }\n }\n\n return true;\n }\n /**\n * A specialized version of `_.filter` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n */\n\n\n function arrayFilter(array, predicate) {\n var index = -1,\n length = array == null ? 0 : array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index];\n\n if (predicate(value, index, array)) {\n result[resIndex++] = value;\n }\n }\n\n return result;\n }\n /**\n * A specialized version of `_.includes` for arrays without support for\n * specifying an index to search from.\n *\n * @private\n * @param {Array} [array] The array to inspect.\n * @param {*} target The value to search for.\n * @returns {boolean} Returns `true` if `target` is found, else `false`.\n */\n\n\n function arrayIncludes(array, value) {\n var length = array == null ? 0 : array.length;\n return !!length && baseIndexOf(array, value, 0) > -1;\n }\n /**\n * This function is like `arrayIncludes` except that it accepts a comparator.\n *\n * @private\n * @param {Array} [array] The array to inspect.\n * @param {*} target The value to search for.\n * @param {Function} comparator The comparator invoked per element.\n * @returns {boolean} Returns `true` if `target` is found, else `false`.\n */\n\n\n function arrayIncludesWith(array, value, comparator) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (comparator(value, array[index])) {\n return true;\n }\n }\n\n return false;\n }\n /**\n * A specialized version of `_.map` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the new mapped array.\n */\n\n\n function arrayMap(array, iteratee) {\n var index = -1,\n length = array == null ? 0 : array.length,\n result = Array(length);\n\n while (++index < length) {\n result[index] = iteratee(array[index], index, array);\n }\n\n return result;\n }\n /**\n * Appends the elements of `values` to `array`.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {Array} values The values to append.\n * @returns {Array} Returns `array`.\n */\n\n\n function arrayPush(array, values) {\n var index = -1,\n length = values.length,\n offset = array.length;\n\n while (++index < length) {\n array[offset + index] = values[index];\n }\n\n return array;\n }\n /**\n * A specialized version of `_.reduce` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @param {boolean} [initAccum] Specify using the first element of `array` as\n * the initial value.\n * @returns {*} Returns the accumulated value.\n */\n\n\n function arrayReduce(array, iteratee, accumulator, initAccum) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n if (initAccum && length) {\n accumulator = array[++index];\n }\n\n while (++index < length) {\n accumulator = iteratee(accumulator, array[index], index, array);\n }\n\n return accumulator;\n }\n /**\n * A specialized version of `_.reduceRight` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @param {boolean} [initAccum] Specify using the last element of `array` as\n * the initial value.\n * @returns {*} Returns the accumulated value.\n */\n\n\n function arrayReduceRight(array, iteratee, accumulator, initAccum) {\n var length = array == null ? 0 : array.length;\n\n if (initAccum && length) {\n accumulator = array[--length];\n }\n\n while (length--) {\n accumulator = iteratee(accumulator, array[length], length, array);\n }\n\n return accumulator;\n }\n /**\n * A specialized version of `_.some` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n * else `false`.\n */\n\n\n function arraySome(array, predicate) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (predicate(array[index], index, array)) {\n return true;\n }\n }\n\n return false;\n }\n /**\n * Gets the size of an ASCII `string`.\n *\n * @private\n * @param {string} string The string inspect.\n * @returns {number} Returns the string size.\n */\n\n\n var asciiSize = baseProperty('length');\n /**\n * Converts an ASCII `string` to an array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the converted array.\n */\n\n function asciiToArray(string) {\n return string.split('');\n }\n /**\n * Splits an ASCII `string` into an array of its words.\n *\n * @private\n * @param {string} The string to inspect.\n * @returns {Array} Returns the words of `string`.\n */\n\n\n function asciiWords(string) {\n return string.match(reAsciiWord) || [];\n }\n /**\n * The base implementation of methods like `_.findKey` and `_.findLastKey`,\n * without support for iteratee shorthands, which iterates over `collection`\n * using `eachFunc`.\n *\n * @private\n * @param {Array|Object} collection The collection to inspect.\n * @param {Function} predicate The function invoked per iteration.\n * @param {Function} eachFunc The function to iterate over `collection`.\n * @returns {*} Returns the found element or its key, else `undefined`.\n */\n\n\n function baseFindKey(collection, predicate, eachFunc) {\n var result;\n eachFunc(collection, function (value, key, collection) {\n if (predicate(value, key, collection)) {\n result = key;\n return false;\n }\n });\n return result;\n }\n /**\n * The base implementation of `_.findIndex` and `_.findLastIndex` without\n * support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} predicate The function invoked per iteration.\n * @param {number} fromIndex The index to search from.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n\n\n function baseFindIndex(array, predicate, fromIndex, fromRight) {\n var length = array.length,\n index = fromIndex + (fromRight ? 1 : -1);\n\n while (fromRight ? index-- : ++index < length) {\n if (predicate(array[index], index, array)) {\n return index;\n }\n }\n\n return -1;\n }\n /**\n * The base implementation of `_.indexOf` without `fromIndex` bounds checks.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n\n\n function baseIndexOf(array, value, fromIndex) {\n return value === value ? strictIndexOf(array, value, fromIndex) : baseFindIndex(array, baseIsNaN, fromIndex);\n }\n /**\n * This function is like `baseIndexOf` except that it accepts a comparator.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @param {Function} comparator The comparator invoked per element.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n\n\n function baseIndexOfWith(array, value, fromIndex, comparator) {\n var index = fromIndex - 1,\n length = array.length;\n\n while (++index < length) {\n if (comparator(array[index], value)) {\n return index;\n }\n }\n\n return -1;\n }\n /**\n * The base implementation of `_.isNaN` without support for number objects.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\n */\n\n\n function baseIsNaN(value) {\n return value !== value;\n }\n /**\n * The base implementation of `_.mean` and `_.meanBy` without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {number} Returns the mean.\n */\n\n\n function baseMean(array, iteratee) {\n var length = array == null ? 0 : array.length;\n return length ? baseSum(array, iteratee) / length : NAN;\n }\n /**\n * The base implementation of `_.property` without support for deep paths.\n *\n * @private\n * @param {string} key The key of the property to get.\n * @returns {Function} Returns the new accessor function.\n */\n\n\n function baseProperty(key) {\n return function (object) {\n return object == null ? undefined : object[key];\n };\n }\n /**\n * The base implementation of `_.propertyOf` without support for deep paths.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Function} Returns the new accessor function.\n */\n\n\n function basePropertyOf(object) {\n return function (key) {\n return object == null ? undefined : object[key];\n };\n }\n /**\n * The base implementation of `_.reduce` and `_.reduceRight`, without support\n * for iteratee shorthands, which iterates over `collection` using `eachFunc`.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} accumulator The initial value.\n * @param {boolean} initAccum Specify using the first or last element of\n * `collection` as the initial value.\n * @param {Function} eachFunc The function to iterate over `collection`.\n * @returns {*} Returns the accumulated value.\n */\n\n\n function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {\n eachFunc(collection, function (value, index, collection) {\n accumulator = initAccum ? (initAccum = false, value) : iteratee(accumulator, value, index, collection);\n });\n return accumulator;\n }\n /**\n * The base implementation of `_.sortBy` which uses `comparer` to define the\n * sort order of `array` and replaces criteria objects with their corresponding\n * values.\n *\n * @private\n * @param {Array} array The array to sort.\n * @param {Function} comparer The function to define sort order.\n * @returns {Array} Returns `array`.\n */\n\n\n function baseSortBy(array, comparer) {\n var length = array.length;\n array.sort(comparer);\n\n while (length--) {\n array[length] = array[length].value;\n }\n\n return array;\n }\n /**\n * The base implementation of `_.sum` and `_.sumBy` without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {number} Returns the sum.\n */\n\n\n function baseSum(array, iteratee) {\n var result,\n index = -1,\n length = array.length;\n\n while (++index < length) {\n var current = iteratee(array[index]);\n\n if (current !== undefined) {\n result = result === undefined ? current : result + current;\n }\n }\n\n return result;\n }\n /**\n * The base implementation of `_.times` without support for iteratee shorthands\n * or max array length checks.\n *\n * @private\n * @param {number} n The number of times to invoke `iteratee`.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the array of results.\n */\n\n\n function baseTimes(n, iteratee) {\n var index = -1,\n result = Array(n);\n\n while (++index < n) {\n result[index] = iteratee(index);\n }\n\n return result;\n }\n /**\n * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array\n * of key-value pairs for `object` corresponding to the property names of `props`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} props The property names to get values for.\n * @returns {Object} Returns the key-value pairs.\n */\n\n\n function baseToPairs(object, props) {\n return arrayMap(props, function (key) {\n return [key, object[key]];\n });\n }\n /**\n * The base implementation of `_.unary` without support for storing metadata.\n *\n * @private\n * @param {Function} func The function to cap arguments for.\n * @returns {Function} Returns the new capped function.\n */\n\n\n function baseUnary(func) {\n return function (value) {\n return func(value);\n };\n }\n /**\n * The base implementation of `_.values` and `_.valuesIn` which creates an\n * array of `object` property values corresponding to the property names\n * of `props`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} props The property names to get values for.\n * @returns {Object} Returns the array of property values.\n */\n\n\n function baseValues(object, props) {\n return arrayMap(props, function (key) {\n return object[key];\n });\n }\n /**\n * Checks if a `cache` value for `key` exists.\n *\n * @private\n * @param {Object} cache The cache to query.\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n\n\n function cacheHas(cache, key) {\n return cache.has(key);\n }\n /**\n * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol\n * that is not found in the character symbols.\n *\n * @private\n * @param {Array} strSymbols The string symbols to inspect.\n * @param {Array} chrSymbols The character symbols to find.\n * @returns {number} Returns the index of the first unmatched string symbol.\n */\n\n\n function charsStartIndex(strSymbols, chrSymbols) {\n var index = -1,\n length = strSymbols.length;\n\n while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}\n\n return index;\n }\n /**\n * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol\n * that is not found in the character symbols.\n *\n * @private\n * @param {Array} strSymbols The string symbols to inspect.\n * @param {Array} chrSymbols The character symbols to find.\n * @returns {number} Returns the index of the last unmatched string symbol.\n */\n\n\n function charsEndIndex(strSymbols, chrSymbols) {\n var index = strSymbols.length;\n\n while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}\n\n return index;\n }\n /**\n * Gets the number of `placeholder` occurrences in `array`.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} placeholder The placeholder to search for.\n * @returns {number} Returns the placeholder count.\n */\n\n\n function countHolders(array, placeholder) {\n var length = array.length,\n result = 0;\n\n while (length--) {\n if (array[length] === placeholder) {\n ++result;\n }\n }\n\n return result;\n }\n /**\n * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A\n * letters to basic Latin letters.\n *\n * @private\n * @param {string} letter The matched letter to deburr.\n * @returns {string} Returns the deburred letter.\n */\n\n\n var deburrLetter = basePropertyOf(deburredLetters);\n /**\n * Used by `_.escape` to convert characters to HTML entities.\n *\n * @private\n * @param {string} chr The matched character to escape.\n * @returns {string} Returns the escaped character.\n */\n\n var escapeHtmlChar = basePropertyOf(htmlEscapes);\n /**\n * Used by `_.template` to escape characters for inclusion in compiled string literals.\n *\n * @private\n * @param {string} chr The matched character to escape.\n * @returns {string} Returns the escaped character.\n */\n\n function escapeStringChar(chr) {\n return '\\\\' + stringEscapes[chr];\n }\n /**\n * Gets the value at `key` of `object`.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {string} key The key of the property to get.\n * @returns {*} Returns the property value.\n */\n\n\n function getValue(object, key) {\n return object == null ? undefined : object[key];\n }\n /**\n * Checks if `string` contains Unicode symbols.\n *\n * @private\n * @param {string} string The string to inspect.\n * @returns {boolean} Returns `true` if a symbol is found, else `false`.\n */\n\n\n function hasUnicode(string) {\n return reHasUnicode.test(string);\n }\n /**\n * Checks if `string` contains a word composed of Unicode symbols.\n *\n * @private\n * @param {string} string The string to inspect.\n * @returns {boolean} Returns `true` if a word is found, else `false`.\n */\n\n\n function hasUnicodeWord(string) {\n return reHasUnicodeWord.test(string);\n }\n /**\n * Converts `iterator` to an array.\n *\n * @private\n * @param {Object} iterator The iterator to convert.\n * @returns {Array} Returns the converted array.\n */\n\n\n function iteratorToArray(iterator) {\n var data,\n result = [];\n\n while (!(data = iterator.next()).done) {\n result.push(data.value);\n }\n\n return result;\n }\n /**\n * Converts `map` to its key-value pairs.\n *\n * @private\n * @param {Object} map The map to convert.\n * @returns {Array} Returns the key-value pairs.\n */\n\n\n function mapToArray(map) {\n var index = -1,\n result = Array(map.size);\n map.forEach(function (value, key) {\n result[++index] = [key, value];\n });\n return result;\n }\n /**\n * Creates a unary function that invokes `func` with its argument transformed.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {Function} transform The argument transform.\n * @returns {Function} Returns the new function.\n */\n\n\n function overArg(func, transform) {\n return function (arg) {\n return func(transform(arg));\n };\n }\n /**\n * Replaces all `placeholder` elements in `array` with an internal placeholder\n * and returns an array of their indexes.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {*} placeholder The placeholder to replace.\n * @returns {Array} Returns the new array of placeholder indexes.\n */\n\n\n function replaceHolders(array, placeholder) {\n var index = -1,\n length = array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index];\n\n if (value === placeholder || value === PLACEHOLDER) {\n array[index] = PLACEHOLDER;\n result[resIndex++] = index;\n }\n }\n\n return result;\n }\n /**\n * Converts `set` to an array of its values.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the values.\n */\n\n\n function setToArray(set) {\n var index = -1,\n result = Array(set.size);\n set.forEach(function (value) {\n result[++index] = value;\n });\n return result;\n }\n /**\n * Converts `set` to its value-value pairs.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the value-value pairs.\n */\n\n\n function setToPairs(set) {\n var index = -1,\n result = Array(set.size);\n set.forEach(function (value) {\n result[++index] = [value, value];\n });\n return result;\n }\n /**\n * A specialized version of `_.indexOf` which performs strict equality\n * comparisons of values, i.e. `===`.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n\n\n function strictIndexOf(array, value, fromIndex) {\n var index = fromIndex - 1,\n length = array.length;\n\n while (++index < length) {\n if (array[index] === value) {\n return index;\n }\n }\n\n return -1;\n }\n /**\n * A specialized version of `_.lastIndexOf` which performs strict equality\n * comparisons of values, i.e. `===`.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n\n\n function strictLastIndexOf(array, value, fromIndex) {\n var index = fromIndex + 1;\n\n while (index--) {\n if (array[index] === value) {\n return index;\n }\n }\n\n return index;\n }\n /**\n * Gets the number of symbols in `string`.\n *\n * @private\n * @param {string} string The string to inspect.\n * @returns {number} Returns the string size.\n */\n\n\n function stringSize(string) {\n return hasUnicode(string) ? unicodeSize(string) : asciiSize(string);\n }\n /**\n * Converts `string` to an array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the converted array.\n */\n\n\n function stringToArray(string) {\n return hasUnicode(string) ? unicodeToArray(string) : asciiToArray(string);\n }\n /**\n * Used by `_.unescape` to convert HTML entities to characters.\n *\n * @private\n * @param {string} chr The matched character to unescape.\n * @returns {string} Returns the unescaped character.\n */\n\n\n var unescapeHtmlChar = basePropertyOf(htmlUnescapes);\n /**\n * Gets the size of a Unicode `string`.\n *\n * @private\n * @param {string} string The string inspect.\n * @returns {number} Returns the string size.\n */\n\n function unicodeSize(string) {\n var result = reUnicode.lastIndex = 0;\n\n while (reUnicode.test(string)) {\n ++result;\n }\n\n return result;\n }\n /**\n * Converts a Unicode `string` to an array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the converted array.\n */\n\n\n function unicodeToArray(string) {\n return string.match(reUnicode) || [];\n }\n /**\n * Splits a Unicode `string` into an array of its words.\n *\n * @private\n * @param {string} The string to inspect.\n * @returns {Array} Returns the words of `string`.\n */\n\n\n function unicodeWords(string) {\n return string.match(reUnicodeWord) || [];\n }\n /*--------------------------------------------------------------------------*/\n\n /**\n * Create a new pristine `lodash` function using the `context` object.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category Util\n * @param {Object} [context=root] The context object.\n * @returns {Function} Returns a new `lodash` function.\n * @example\n *\n * _.mixin({ 'foo': _.constant('foo') });\n *\n * var lodash = _.runInContext();\n * lodash.mixin({ 'bar': lodash.constant('bar') });\n *\n * _.isFunction(_.foo);\n * // => true\n * _.isFunction(_.bar);\n * // => false\n *\n * lodash.isFunction(lodash.foo);\n * // => false\n * lodash.isFunction(lodash.bar);\n * // => true\n *\n * // Create a suped-up `defer` in Node.js.\n * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;\n */\n\n\n var runInContext = function runInContext(context) {\n context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps));\n /** Built-in constructor references. */\n\n var Array = context.Array,\n Date = context.Date,\n Error = context.Error,\n Function = context.Function,\n Math = context.Math,\n Object = context.Object,\n RegExp = context.RegExp,\n String = context.String,\n TypeError = context.TypeError;\n /** Used for built-in method references. */\n\n var arrayProto = Array.prototype,\n funcProto = Function.prototype,\n objectProto = Object.prototype;\n /** Used to detect overreaching core-js shims. */\n\n var coreJsData = context['__core-js_shared__'];\n /** Used to resolve the decompiled source of functions. */\n\n var funcToString = funcProto.toString;\n /** Used to check objects for own properties. */\n\n var hasOwnProperty = objectProto.hasOwnProperty;\n /** Used to generate unique IDs. */\n\n var idCounter = 0;\n /** Used to detect methods masquerading as native. */\n\n var maskSrcKey = function () {\n var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');\n return uid ? 'Symbol(src)_1.' + uid : '';\n }();\n /**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n * of values.\n */\n\n\n var nativeObjectToString = objectProto.toString;\n /** Used to infer the `Object` constructor. */\n\n var objectCtorString = funcToString.call(Object);\n /** Used to restore the original `_` reference in `_.noConflict`. */\n\n var oldDash = root._;\n /** Used to detect if a method is native. */\n\n var reIsNative = RegExp('^' + funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\\\$&').replace(/hasOwnProperty|(function).*?(?=\\\\\\()| for .+?(?=\\\\\\])/g, '$1.*?') + '$');\n /** Built-in value references. */\n\n var Buffer = moduleExports ? context.Buffer : undefined,\n _Symbol = context.Symbol,\n Uint8Array = context.Uint8Array,\n allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined,\n getPrototype = overArg(Object.getPrototypeOf, Object),\n objectCreate = Object.create,\n propertyIsEnumerable = objectProto.propertyIsEnumerable,\n splice = arrayProto.splice,\n spreadableSymbol = _Symbol ? _Symbol.isConcatSpreadable : undefined,\n symIterator = _Symbol ? _Symbol.iterator : undefined,\n symToStringTag = _Symbol ? _Symbol.toStringTag : undefined;\n\n var defineProperty = function () {\n try {\n var func = getNative(Object, 'defineProperty');\n func({}, '', {});\n return func;\n } catch (e) {}\n }();\n /** Mocked built-ins. */\n\n\n var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout,\n ctxNow = Date && Date.now !== root.Date.now && Date.now,\n ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout;\n /* Built-in method references for those with the same name as other `lodash` methods. */\n\n var nativeCeil = Math.ceil,\n nativeFloor = Math.floor,\n nativeGetSymbols = Object.getOwnPropertySymbols,\n nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,\n nativeIsFinite = context.isFinite,\n nativeJoin = arrayProto.join,\n nativeKeys = overArg(Object.keys, Object),\n nativeMax = Math.max,\n nativeMin = Math.min,\n nativeNow = Date.now,\n nativeParseInt = context.parseInt,\n nativeRandom = Math.random,\n nativeReverse = arrayProto.reverse;\n /* Built-in method references that are verified to be native. */\n\n var DataView = getNative(context, 'DataView'),\n Map = getNative(context, 'Map'),\n Promise = getNative(context, 'Promise'),\n Set = getNative(context, 'Set'),\n WeakMap = getNative(context, 'WeakMap'),\n nativeCreate = getNative(Object, 'create');\n /** Used to store function metadata. */\n\n var metaMap = WeakMap && new WeakMap();\n /** Used to lookup unminified function names. */\n\n var realNames = {};\n /** Used to detect maps, sets, and weakmaps. */\n\n var dataViewCtorString = toSource(DataView),\n mapCtorString = toSource(Map),\n promiseCtorString = toSource(Promise),\n setCtorString = toSource(Set),\n weakMapCtorString = toSource(WeakMap);\n /** Used to convert symbols to primitives and strings. */\n\n var symbolProto = _Symbol ? _Symbol.prototype : undefined,\n symbolValueOf = symbolProto ? symbolProto.valueOf : undefined,\n symbolToString = symbolProto ? symbolProto.toString : undefined;\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a `lodash` object which wraps `value` to enable implicit method\n * chain sequences. Methods that operate on and return arrays, collections,\n * and functions can be chained together. Methods that retrieve a single value\n * or may return a primitive value will automatically end the chain sequence\n * and return the unwrapped value. Otherwise, the value must be unwrapped\n * with `_#value`.\n *\n * Explicit chain sequences, which must be unwrapped with `_#value`, may be\n * enabled using `_.chain`.\n *\n * The execution of chained methods is lazy, that is, it's deferred until\n * `_#value` is implicitly or explicitly called.\n *\n * Lazy evaluation allows several methods to support shortcut fusion.\n * Shortcut fusion is an optimization to merge iteratee calls; this avoids\n * the creation of intermediate arrays and can greatly reduce the number of\n * iteratee executions. Sections of a chain sequence qualify for shortcut\n * fusion if the section is applied to an array and iteratees accept only\n * one argument. The heuristic for whether a section qualifies for shortcut\n * fusion is subject to change.\n *\n * Chaining is supported in custom builds as long as the `_#value` method is\n * directly or indirectly included in the build.\n *\n * In addition to lodash methods, wrappers have `Array` and `String` methods.\n *\n * The wrapper `Array` methods are:\n * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`\n *\n * The wrapper `String` methods are:\n * `replace` and `split`\n *\n * The wrapper methods that support shortcut fusion are:\n * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,\n * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,\n * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`\n *\n * The chainable wrapper methods are:\n * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,\n * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,\n * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,\n * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,\n * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,\n * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,\n * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,\n * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,\n * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,\n * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,\n * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,\n * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,\n * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,\n * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,\n * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,\n * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,\n * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,\n * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,\n * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,\n * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,\n * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,\n * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,\n * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,\n * `zipObject`, `zipObjectDeep`, and `zipWith`\n *\n * The wrapper methods that are **not** chainable by default are:\n * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,\n * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,\n * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,\n * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,\n * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,\n * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,\n * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,\n * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,\n * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,\n * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,\n * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,\n * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,\n * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,\n * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,\n * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,\n * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,\n * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,\n * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,\n * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,\n * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,\n * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,\n * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,\n * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,\n * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,\n * `upperFirst`, `value`, and `words`\n *\n * @name _\n * @constructor\n * @category Seq\n * @param {*} value The value to wrap in a `lodash` instance.\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * function square(n) {\n * return n * n;\n * }\n *\n * var wrapped = _([1, 2, 3]);\n *\n * // Returns an unwrapped value.\n * wrapped.reduce(_.add);\n * // => 6\n *\n * // Returns a wrapped value.\n * var squares = wrapped.map(square);\n *\n * _.isArray(squares);\n * // => false\n *\n * _.isArray(squares.value());\n * // => true\n */\n\n function lodash(value) {\n if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {\n if (value instanceof LodashWrapper) {\n return value;\n }\n\n if (hasOwnProperty.call(value, '__wrapped__')) {\n return wrapperClone(value);\n }\n }\n\n return new LodashWrapper(value);\n }\n /**\n * The base implementation of `_.create` without support for assigning\n * properties to the created object.\n *\n * @private\n * @param {Object} proto The object to inherit from.\n * @returns {Object} Returns the new object.\n */\n\n\n var baseCreate = function () {\n function object() {}\n\n return function (proto) {\n if (!isObject(proto)) {\n return {};\n }\n\n if (objectCreate) {\n return objectCreate(proto);\n }\n\n object.prototype = proto;\n var result = new object();\n object.prototype = undefined;\n return result;\n };\n }();\n /**\n * The function whose prototype chain sequence wrappers inherit from.\n *\n * @private\n */\n\n\n function baseLodash() {} // No operation performed.\n\n /**\n * The base constructor for creating `lodash` wrapper objects.\n *\n * @private\n * @param {*} value The value to wrap.\n * @param {boolean} [chainAll] Enable explicit method chain sequences.\n */\n\n\n function LodashWrapper(value, chainAll) {\n this.__wrapped__ = value;\n this.__actions__ = [];\n this.__chain__ = !!chainAll;\n this.__index__ = 0;\n this.__values__ = undefined;\n }\n /**\n * By default, the template delimiters used by lodash are like those in\n * embedded Ruby (ERB) as well as ES2015 template strings. Change the\n * following template settings to use alternative delimiters.\n *\n * @static\n * @memberOf _\n * @type {Object}\n */\n\n\n lodash.templateSettings = {\n /**\n * Used to detect `data` property values to be HTML-escaped.\n *\n * @memberOf _.templateSettings\n * @type {RegExp}\n */\n 'escape': reEscape,\n\n /**\n * Used to detect code to be evaluated.\n *\n * @memberOf _.templateSettings\n * @type {RegExp}\n */\n 'evaluate': reEvaluate,\n\n /**\n * Used to detect `data` property values to inject.\n *\n * @memberOf _.templateSettings\n * @type {RegExp}\n */\n 'interpolate': reInterpolate,\n\n /**\n * Used to reference the data object in the template text.\n *\n * @memberOf _.templateSettings\n * @type {string}\n */\n 'variable': '',\n\n /**\n * Used to import variables into the compiled template.\n *\n * @memberOf _.templateSettings\n * @type {Object}\n */\n 'imports': {\n /**\n * A reference to the `lodash` function.\n *\n * @memberOf _.templateSettings.imports\n * @type {Function}\n */\n '_': lodash\n }\n }; // Ensure wrappers are instances of `baseLodash`.\n\n lodash.prototype = baseLodash.prototype;\n lodash.prototype.constructor = lodash;\n LodashWrapper.prototype = baseCreate(baseLodash.prototype);\n LodashWrapper.prototype.constructor = LodashWrapper;\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.\n *\n * @private\n * @constructor\n * @param {*} value The value to wrap.\n */\n\n function LazyWrapper(value) {\n this.__wrapped__ = value;\n this.__actions__ = [];\n this.__dir__ = 1;\n this.__filtered__ = false;\n this.__iteratees__ = [];\n this.__takeCount__ = MAX_ARRAY_LENGTH;\n this.__views__ = [];\n }\n /**\n * Creates a clone of the lazy wrapper object.\n *\n * @private\n * @name clone\n * @memberOf LazyWrapper\n * @returns {Object} Returns the cloned `LazyWrapper` object.\n */\n\n\n function lazyClone() {\n var result = new LazyWrapper(this.__wrapped__);\n result.__actions__ = copyArray(this.__actions__);\n result.__dir__ = this.__dir__;\n result.__filtered__ = this.__filtered__;\n result.__iteratees__ = copyArray(this.__iteratees__);\n result.__takeCount__ = this.__takeCount__;\n result.__views__ = copyArray(this.__views__);\n return result;\n }\n /**\n * Reverses the direction of lazy iteration.\n *\n * @private\n * @name reverse\n * @memberOf LazyWrapper\n * @returns {Object} Returns the new reversed `LazyWrapper` object.\n */\n\n\n function lazyReverse() {\n if (this.__filtered__) {\n var result = new LazyWrapper(this);\n result.__dir__ = -1;\n result.__filtered__ = true;\n } else {\n result = this.clone();\n result.__dir__ *= -1;\n }\n\n return result;\n }\n /**\n * Extracts the unwrapped value from its lazy wrapper.\n *\n * @private\n * @name value\n * @memberOf LazyWrapper\n * @returns {*} Returns the unwrapped value.\n */\n\n\n function lazyValue() {\n var array = this.__wrapped__.value(),\n dir = this.__dir__,\n isArr = isArray(array),\n isRight = dir < 0,\n arrLength = isArr ? array.length : 0,\n view = getView(0, arrLength, this.__views__),\n start = view.start,\n end = view.end,\n length = end - start,\n index = isRight ? end : start - 1,\n iteratees = this.__iteratees__,\n iterLength = iteratees.length,\n resIndex = 0,\n takeCount = nativeMin(length, this.__takeCount__);\n\n if (!isArr || !isRight && arrLength == length && takeCount == length) {\n return baseWrapperValue(array, this.__actions__);\n }\n\n var result = [];\n\n outer: while (length-- && resIndex < takeCount) {\n index += dir;\n var iterIndex = -1,\n value = array[index];\n\n while (++iterIndex < iterLength) {\n var data = iteratees[iterIndex],\n iteratee = data.iteratee,\n type = data.type,\n computed = iteratee(value);\n\n if (type == LAZY_MAP_FLAG) {\n value = computed;\n } else if (!computed) {\n if (type == LAZY_FILTER_FLAG) {\n continue outer;\n } else {\n break outer;\n }\n }\n }\n\n result[resIndex++] = value;\n }\n\n return result;\n } // Ensure `LazyWrapper` is an instance of `baseLodash`.\n\n\n LazyWrapper.prototype = baseCreate(baseLodash.prototype);\n LazyWrapper.prototype.constructor = LazyWrapper;\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a hash object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\n\n function Hash(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n this.clear();\n\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n }\n /**\n * Removes all key-value entries from the hash.\n *\n * @private\n * @name clear\n * @memberOf Hash\n */\n\n\n function hashClear() {\n this.__data__ = nativeCreate ? nativeCreate(null) : {};\n this.size = 0;\n }\n /**\n * Removes `key` and its value from the hash.\n *\n * @private\n * @name delete\n * @memberOf Hash\n * @param {Object} hash The hash to modify.\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\n\n\n function hashDelete(key) {\n var result = this.has(key) && delete this.__data__[key];\n this.size -= result ? 1 : 0;\n return result;\n }\n /**\n * Gets the hash value for `key`.\n *\n * @private\n * @name get\n * @memberOf Hash\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\n\n\n function hashGet(key) {\n var data = this.__data__;\n\n if (nativeCreate) {\n var result = data[key];\n return result === HASH_UNDEFINED ? undefined : result;\n }\n\n return hasOwnProperty.call(data, key) ? data[key] : undefined;\n }\n /**\n * Checks if a hash value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Hash\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n\n\n function hashHas(key) {\n var data = this.__data__;\n return nativeCreate ? data[key] !== undefined : hasOwnProperty.call(data, key);\n }\n /**\n * Sets the hash `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Hash\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the hash instance.\n */\n\n\n function hashSet(key, value) {\n var data = this.__data__;\n this.size += this.has(key) ? 0 : 1;\n data[key] = nativeCreate && value === undefined ? HASH_UNDEFINED : value;\n return this;\n } // Add methods to `Hash`.\n\n\n Hash.prototype.clear = hashClear;\n Hash.prototype['delete'] = hashDelete;\n Hash.prototype.get = hashGet;\n Hash.prototype.has = hashHas;\n Hash.prototype.set = hashSet;\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates an list cache object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\n\n function ListCache(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n this.clear();\n\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n }\n /**\n * Removes all key-value entries from the list cache.\n *\n * @private\n * @name clear\n * @memberOf ListCache\n */\n\n\n function listCacheClear() {\n this.__data__ = [];\n this.size = 0;\n }\n /**\n * Removes `key` and its value from the list cache.\n *\n * @private\n * @name delete\n * @memberOf ListCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\n\n\n function listCacheDelete(key) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n if (index < 0) {\n return false;\n }\n\n var lastIndex = data.length - 1;\n\n if (index == lastIndex) {\n data.pop();\n } else {\n splice.call(data, index, 1);\n }\n\n --this.size;\n return true;\n }\n /**\n * Gets the list cache value for `key`.\n *\n * @private\n * @name get\n * @memberOf ListCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\n\n\n function listCacheGet(key) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n return index < 0 ? undefined : data[index][1];\n }\n /**\n * Checks if a list cache value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf ListCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n\n\n function listCacheHas(key) {\n return assocIndexOf(this.__data__, key) > -1;\n }\n /**\n * Sets the list cache `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf ListCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the list cache instance.\n */\n\n\n function listCacheSet(key, value) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n if (index < 0) {\n ++this.size;\n data.push([key, value]);\n } else {\n data[index][1] = value;\n }\n\n return this;\n } // Add methods to `ListCache`.\n\n\n ListCache.prototype.clear = listCacheClear;\n ListCache.prototype['delete'] = listCacheDelete;\n ListCache.prototype.get = listCacheGet;\n ListCache.prototype.has = listCacheHas;\n ListCache.prototype.set = listCacheSet;\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a map cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\n\n function MapCache(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n this.clear();\n\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n }\n /**\n * Removes all key-value entries from the map.\n *\n * @private\n * @name clear\n * @memberOf MapCache\n */\n\n\n function mapCacheClear() {\n this.size = 0;\n this.__data__ = {\n 'hash': new Hash(),\n 'map': new (Map || ListCache)(),\n 'string': new Hash()\n };\n }\n /**\n * Removes `key` and its value from the map.\n *\n * @private\n * @name delete\n * @memberOf MapCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\n\n\n function mapCacheDelete(key) {\n var result = getMapData(this, key)['delete'](key);\n this.size -= result ? 1 : 0;\n return result;\n }\n /**\n * Gets the map value for `key`.\n *\n * @private\n * @name get\n * @memberOf MapCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\n\n\n function mapCacheGet(key) {\n return getMapData(this, key).get(key);\n }\n /**\n * Checks if a map value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf MapCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n\n\n function mapCacheHas(key) {\n return getMapData(this, key).has(key);\n }\n /**\n * Sets the map `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf MapCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the map cache instance.\n */\n\n\n function mapCacheSet(key, value) {\n var data = getMapData(this, key),\n size = data.size;\n data.set(key, value);\n this.size += data.size == size ? 0 : 1;\n return this;\n } // Add methods to `MapCache`.\n\n\n MapCache.prototype.clear = mapCacheClear;\n MapCache.prototype['delete'] = mapCacheDelete;\n MapCache.prototype.get = mapCacheGet;\n MapCache.prototype.has = mapCacheHas;\n MapCache.prototype.set = mapCacheSet;\n /*------------------------------------------------------------------------*/\n\n /**\n *\n * Creates an array cache object to store unique values.\n *\n * @private\n * @constructor\n * @param {Array} [values] The values to cache.\n */\n\n function SetCache(values) {\n var index = -1,\n length = values == null ? 0 : values.length;\n this.__data__ = new MapCache();\n\n while (++index < length) {\n this.add(values[index]);\n }\n }\n /**\n * Adds `value` to the array cache.\n *\n * @private\n * @name add\n * @memberOf SetCache\n * @alias push\n * @param {*} value The value to cache.\n * @returns {Object} Returns the cache instance.\n */\n\n\n function setCacheAdd(value) {\n this.__data__.set(value, HASH_UNDEFINED);\n\n return this;\n }\n /**\n * Checks if `value` is in the array cache.\n *\n * @private\n * @name has\n * @memberOf SetCache\n * @param {*} value The value to search for.\n * @returns {number} Returns `true` if `value` is found, else `false`.\n */\n\n\n function setCacheHas(value) {\n return this.__data__.has(value);\n } // Add methods to `SetCache`.\n\n\n SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;\n SetCache.prototype.has = setCacheHas;\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a stack cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\n\n function Stack(entries) {\n var data = this.__data__ = new ListCache(entries);\n this.size = data.size;\n }\n /**\n * Removes all key-value entries from the stack.\n *\n * @private\n * @name clear\n * @memberOf Stack\n */\n\n\n function stackClear() {\n this.__data__ = new ListCache();\n this.size = 0;\n }\n /**\n * Removes `key` and its value from the stack.\n *\n * @private\n * @name delete\n * @memberOf Stack\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\n\n\n function stackDelete(key) {\n var data = this.__data__,\n result = data['delete'](key);\n this.size = data.size;\n return result;\n }\n /**\n * Gets the stack value for `key`.\n *\n * @private\n * @name get\n * @memberOf Stack\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\n\n\n function stackGet(key) {\n return this.__data__.get(key);\n }\n /**\n * Checks if a stack value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Stack\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n\n\n function stackHas(key) {\n return this.__data__.has(key);\n }\n /**\n * Sets the stack `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Stack\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the stack cache instance.\n */\n\n\n function stackSet(key, value) {\n var data = this.__data__;\n\n if (data instanceof ListCache) {\n var pairs = data.__data__;\n\n if (!Map || pairs.length < LARGE_ARRAY_SIZE - 1) {\n pairs.push([key, value]);\n this.size = ++data.size;\n return this;\n }\n\n data = this.__data__ = new MapCache(pairs);\n }\n\n data.set(key, value);\n this.size = data.size;\n return this;\n } // Add methods to `Stack`.\n\n\n Stack.prototype.clear = stackClear;\n Stack.prototype['delete'] = stackDelete;\n Stack.prototype.get = stackGet;\n Stack.prototype.has = stackHas;\n Stack.prototype.set = stackSet;\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates an array of the enumerable property names of the array-like `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @param {boolean} inherited Specify returning inherited property names.\n * @returns {Array} Returns the array of property names.\n */\n\n function arrayLikeKeys(value, inherited) {\n var isArr = isArray(value),\n isArg = !isArr && isArguments(value),\n isBuff = !isArr && !isArg && isBuffer(value),\n isType = !isArr && !isArg && !isBuff && isTypedArray(value),\n skipIndexes = isArr || isArg || isBuff || isType,\n result = skipIndexes ? baseTimes(value.length, String) : [],\n length = result.length;\n\n for (var key in value) {\n if ((inherited || hasOwnProperty.call(value, key)) && !(skipIndexes && ( // Safari 9 has enumerable `arguments.length` in strict mode.\n key == 'length' || // Node.js 0.10 has enumerable non-index properties on buffers.\n isBuff && (key == 'offset' || key == 'parent') || // PhantomJS 2 has enumerable non-index properties on typed arrays.\n isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset') || // Skip index properties.\n isIndex(key, length)))) {\n result.push(key);\n }\n }\n\n return result;\n }\n /**\n * A specialized version of `_.sample` for arrays.\n *\n * @private\n * @param {Array} array The array to sample.\n * @returns {*} Returns the random element.\n */\n\n\n function arraySample(array) {\n var length = array.length;\n return length ? array[baseRandom(0, length - 1)] : undefined;\n }\n /**\n * A specialized version of `_.sampleSize` for arrays.\n *\n * @private\n * @param {Array} array The array to sample.\n * @param {number} n The number of elements to sample.\n * @returns {Array} Returns the random elements.\n */\n\n\n function arraySampleSize(array, n) {\n return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));\n }\n /**\n * A specialized version of `_.shuffle` for arrays.\n *\n * @private\n * @param {Array} array The array to shuffle.\n * @returns {Array} Returns the new shuffled array.\n */\n\n\n function arrayShuffle(array) {\n return shuffleSelf(copyArray(array));\n }\n /**\n * This function is like `assignValue` except that it doesn't assign\n * `undefined` values.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\n\n\n function assignMergeValue(object, key, value) {\n if (value !== undefined && !eq(object[key], value) || value === undefined && !(key in object)) {\n baseAssignValue(object, key, value);\n }\n }\n /**\n * Assigns `value` to `key` of `object` if the existing value is not equivalent\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\n\n\n function assignValue(object, key, value) {\n var objValue = object[key];\n\n if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) || value === undefined && !(key in object)) {\n baseAssignValue(object, key, value);\n }\n }\n /**\n * Gets the index at which the `key` is found in `array` of key-value pairs.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} key The key to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n\n\n function assocIndexOf(array, key) {\n var length = array.length;\n\n while (length--) {\n if (eq(array[length][0], key)) {\n return length;\n }\n }\n\n return -1;\n }\n /**\n * Aggregates elements of `collection` on `accumulator` with keys transformed\n * by `iteratee` and values set by `setter`.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} setter The function to set `accumulator` values.\n * @param {Function} iteratee The iteratee to transform keys.\n * @param {Object} accumulator The initial aggregated object.\n * @returns {Function} Returns `accumulator`.\n */\n\n\n function baseAggregator(collection, setter, iteratee, accumulator) {\n baseEach(collection, function (value, key, collection) {\n setter(accumulator, value, iteratee(value), collection);\n });\n return accumulator;\n }\n /**\n * The base implementation of `_.assign` without support for multiple sources\n * or `customizer` functions.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @returns {Object} Returns `object`.\n */\n\n\n function baseAssign(object, source) {\n return object && copyObject(source, keys(source), object);\n }\n /**\n * The base implementation of `_.assignIn` without support for multiple sources\n * or `customizer` functions.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @returns {Object} Returns `object`.\n */\n\n\n function baseAssignIn(object, source) {\n return object && copyObject(source, keysIn(source), object);\n }\n /**\n * The base implementation of `assignValue` and `assignMergeValue` without\n * value checks.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\n\n\n function baseAssignValue(object, key, value) {\n if (key == '__proto__' && defineProperty) {\n defineProperty(object, key, {\n 'configurable': true,\n 'enumerable': true,\n 'value': value,\n 'writable': true\n });\n } else {\n object[key] = value;\n }\n }\n /**\n * The base implementation of `_.at` without support for individual paths.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {string[]} paths The property paths to pick.\n * @returns {Array} Returns the picked elements.\n */\n\n\n function baseAt(object, paths) {\n var index = -1,\n length = paths.length,\n result = Array(length),\n skip = object == null;\n\n while (++index < length) {\n result[index] = skip ? undefined : get(object, paths[index]);\n }\n\n return result;\n }\n /**\n * The base implementation of `_.clamp` which doesn't coerce arguments.\n *\n * @private\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 */\n\n\n function baseClamp(number, lower, upper) {\n if (number === number) {\n if (upper !== undefined) {\n number = number <= upper ? number : upper;\n }\n\n if (lower !== undefined) {\n number = number >= lower ? number : lower;\n }\n }\n\n return number;\n }\n /**\n * The base implementation of `_.clone` and `_.cloneDeep` which tracks\n * traversed objects.\n *\n * @private\n * @param {*} value The value to clone.\n * @param {boolean} bitmask The bitmask flags.\n * 1 - Deep clone\n * 2 - Flatten inherited properties\n * 4 - Clone symbols\n * @param {Function} [customizer] The function to customize cloning.\n * @param {string} [key] The key of `value`.\n * @param {Object} [object] The parent object of `value`.\n * @param {Object} [stack] Tracks traversed objects and their clone counterparts.\n * @returns {*} Returns the cloned value.\n */\n\n\n function baseClone(value, bitmask, customizer, key, object, stack) {\n var result,\n isDeep = bitmask & CLONE_DEEP_FLAG,\n isFlat = bitmask & CLONE_FLAT_FLAG,\n isFull = bitmask & CLONE_SYMBOLS_FLAG;\n\n if (customizer) {\n result = object ? customizer(value, key, object, stack) : customizer(value);\n }\n\n if (result !== undefined) {\n return result;\n }\n\n if (!isObject(value)) {\n return value;\n }\n\n var isArr = isArray(value);\n\n if (isArr) {\n result = initCloneArray(value);\n\n if (!isDeep) {\n return copyArray(value, result);\n }\n } else {\n var tag = getTag(value),\n isFunc = tag == funcTag || tag == genTag;\n\n if (isBuffer(value)) {\n return cloneBuffer(value, isDeep);\n }\n\n if (tag == objectTag || tag == argsTag || isFunc && !object) {\n result = isFlat || isFunc ? {} : initCloneObject(value);\n\n if (!isDeep) {\n return isFlat ? copySymbolsIn(value, baseAssignIn(result, value)) : copySymbols(value, baseAssign(result, value));\n }\n } else {\n if (!cloneableTags[tag]) {\n return object ? value : {};\n }\n\n result = initCloneByTag(value, tag, isDeep);\n }\n } // Check for circular references and return its corresponding clone.\n\n\n stack || (stack = new Stack());\n var stacked = stack.get(value);\n\n if (stacked) {\n return stacked;\n }\n\n stack.set(value, result);\n\n if (isSet(value)) {\n value.forEach(function (subValue) {\n result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));\n });\n } else if (isMap(value)) {\n value.forEach(function (subValue, key) {\n result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));\n });\n }\n\n var keysFunc = isFull ? isFlat ? getAllKeysIn : getAllKeys : isFlat ? keysIn : keys;\n var props = isArr ? undefined : keysFunc(value);\n arrayEach(props || value, function (subValue, key) {\n if (props) {\n key = subValue;\n subValue = value[key];\n } // Recursively populate clone (susceptible to call stack limits).\n\n\n assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));\n });\n return result;\n }\n /**\n * The base implementation of `_.conforms` which doesn't clone `source`.\n *\n * @private\n * @param {Object} source The object of property predicates to conform to.\n * @returns {Function} Returns the new spec function.\n */\n\n\n function baseConforms(source) {\n var props = keys(source);\n return function (object) {\n return baseConformsTo(object, source, props);\n };\n }\n /**\n * The base implementation of `_.conformsTo` which accepts `props` to check.\n *\n * @private\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 */\n\n\n function baseConformsTo(object, source, props) {\n var length = props.length;\n\n if (object == null) {\n return !length;\n }\n\n object = Object(object);\n\n while (length--) {\n var key = props[length],\n predicate = source[key],\n value = object[key];\n\n if (value === undefined && !(key in object) || !predicate(value)) {\n return false;\n }\n }\n\n return true;\n }\n /**\n * The base implementation of `_.delay` and `_.defer` which accepts `args`\n * to provide to `func`.\n *\n * @private\n * @param {Function} func The function to delay.\n * @param {number} wait The number of milliseconds to delay invocation.\n * @param {Array} args The arguments to provide to `func`.\n * @returns {number|Object} Returns the timer id or timeout object.\n */\n\n\n function baseDelay(func, wait, args) {\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n\n return setTimeout(function () {\n func.apply(undefined, args);\n }, wait);\n }\n /**\n * The base implementation of methods like `_.difference` without support\n * for excluding multiple arrays or iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Array} values The values to exclude.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n */\n\n\n function baseDifference(array, values, iteratee, comparator) {\n var index = -1,\n includes = arrayIncludes,\n isCommon = true,\n length = array.length,\n result = [],\n valuesLength = values.length;\n\n if (!length) {\n return result;\n }\n\n if (iteratee) {\n values = arrayMap(values, baseUnary(iteratee));\n }\n\n if (comparator) {\n includes = arrayIncludesWith;\n isCommon = false;\n } else if (values.length >= LARGE_ARRAY_SIZE) {\n includes = cacheHas;\n isCommon = false;\n values = new SetCache(values);\n }\n\n outer: while (++index < length) {\n var value = array[index],\n computed = iteratee == null ? value : iteratee(value);\n value = comparator || value !== 0 ? value : 0;\n\n if (isCommon && computed === computed) {\n var valuesIndex = valuesLength;\n\n while (valuesIndex--) {\n if (values[valuesIndex] === computed) {\n continue outer;\n }\n }\n\n result.push(value);\n } else if (!includes(values, computed, comparator)) {\n result.push(value);\n }\n }\n\n return result;\n }\n /**\n * The base implementation of `_.forEach` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n */\n\n\n var baseEach = createBaseEach(baseForOwn);\n /**\n * The base implementation of `_.forEachRight` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n */\n\n var baseEachRight = createBaseEach(baseForOwnRight, true);\n /**\n * The base implementation of `_.every` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if all elements pass the predicate check,\n * else `false`\n */\n\n function baseEvery(collection, predicate) {\n var result = true;\n baseEach(collection, function (value, index, collection) {\n result = !!predicate(value, index, collection);\n return result;\n });\n return result;\n }\n /**\n * The base implementation of methods like `_.max` and `_.min` which accepts a\n * `comparator` to determine the extremum value.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The iteratee invoked per iteration.\n * @param {Function} comparator The comparator used to compare values.\n * @returns {*} Returns the extremum value.\n */\n\n\n function baseExtremum(array, iteratee, comparator) {\n var index = -1,\n length = array.length;\n\n while (++index < length) {\n var value = array[index],\n current = iteratee(value);\n\n if (current != null && (computed === undefined ? current === current && !isSymbol(current) : comparator(current, computed))) {\n var computed = current,\n result = value;\n }\n }\n\n return result;\n }\n /**\n * The base implementation of `_.fill` without an iteratee call guard.\n *\n * @private\n * @param {Array} array The array to fill.\n * @param {*} value The value to fill `array` with.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns `array`.\n */\n\n\n function baseFill(array, value, start, end) {\n var length = array.length;\n start = toInteger(start);\n\n if (start < 0) {\n start = -start > length ? 0 : length + start;\n }\n\n end = end === undefined || end > length ? length : toInteger(end);\n\n if (end < 0) {\n end += length;\n }\n\n end = start > end ? 0 : toLength(end);\n\n while (start < end) {\n array[start++] = value;\n }\n\n return array;\n }\n /**\n * The base implementation of `_.filter` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n */\n\n\n function baseFilter(collection, predicate) {\n var result = [];\n baseEach(collection, function (value, index, collection) {\n if (predicate(value, index, collection)) {\n result.push(value);\n }\n });\n return result;\n }\n /**\n * The base implementation of `_.flatten` with support for restricting flattening.\n *\n * @private\n * @param {Array} array The array to flatten.\n * @param {number} depth The maximum recursion depth.\n * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.\n * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.\n * @param {Array} [result=[]] The initial result value.\n * @returns {Array} Returns the new flattened array.\n */\n\n\n function baseFlatten(array, depth, predicate, isStrict, result) {\n var index = -1,\n length = array.length;\n predicate || (predicate = isFlattenable);\n result || (result = []);\n\n while (++index < length) {\n var value = array[index];\n\n if (depth > 0 && predicate(value)) {\n if (depth > 1) {\n // Recursively flatten arrays (susceptible to call stack limits).\n baseFlatten(value, depth - 1, predicate, isStrict, result);\n } else {\n arrayPush(result, value);\n }\n } else if (!isStrict) {\n result[result.length] = value;\n }\n }\n\n return result;\n }\n /**\n * The base implementation of `baseForOwn` which iterates over `object`\n * properties returned by `keysFunc` and invokes `iteratee` for each property.\n * Iteratee functions may exit iteration early by explicitly returning `false`.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @returns {Object} Returns `object`.\n */\n\n\n var baseFor = createBaseFor();\n /**\n * This function is like `baseFor` except that it iterates over properties\n * in the opposite order.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @returns {Object} Returns `object`.\n */\n\n var baseForRight = createBaseFor(true);\n /**\n * The base implementation of `_.forOwn` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Object} Returns `object`.\n */\n\n function baseForOwn(object, iteratee) {\n return object && baseFor(object, iteratee, keys);\n }\n /**\n * The base implementation of `_.forOwnRight` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Object} Returns `object`.\n */\n\n\n function baseForOwnRight(object, iteratee) {\n return object && baseForRight(object, iteratee, keys);\n }\n /**\n * The base implementation of `_.functions` which creates an array of\n * `object` function property names filtered from `props`.\n *\n * @private\n * @param {Object} object The object to inspect.\n * @param {Array} props The property names to filter.\n * @returns {Array} Returns the function names.\n */\n\n\n function baseFunctions(object, props) {\n return arrayFilter(props, function (key) {\n return isFunction(object[key]);\n });\n }\n /**\n * The base implementation of `_.get` without support for default values.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to get.\n * @returns {*} Returns the resolved value.\n */\n\n\n function baseGet(object, path) {\n path = castPath(path, object);\n var index = 0,\n length = path.length;\n\n while (object != null && index < length) {\n object = object[toKey(path[index++])];\n }\n\n return index && index == length ? object : undefined;\n }\n /**\n * The base implementation of `getAllKeys` and `getAllKeysIn` which uses\n * `keysFunc` and `symbolsFunc` to get the enumerable property names and\n * symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @param {Function} symbolsFunc The function to get the symbols of `object`.\n * @returns {Array} Returns the array of property names and symbols.\n */\n\n\n function baseGetAllKeys(object, keysFunc, symbolsFunc) {\n var result = keysFunc(object);\n return isArray(object) ? result : arrayPush(result, symbolsFunc(object));\n }\n /**\n * The base implementation of `getTag` without fallbacks for buggy environments.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\n\n\n function baseGetTag(value) {\n if (value == null) {\n return value === undefined ? undefinedTag : nullTag;\n }\n\n return symToStringTag && symToStringTag in Object(value) ? getRawTag(value) : objectToString(value);\n }\n /**\n * The base implementation of `_.gt` which doesn't coerce arguments.\n *\n * @private\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 */\n\n\n function baseGt(value, other) {\n return value > other;\n }\n /**\n * The base implementation of `_.has` without support for deep paths.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {Array|string} key The key to check.\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\n */\n\n\n function baseHas(object, key) {\n return object != null && hasOwnProperty.call(object, key);\n }\n /**\n * The base implementation of `_.hasIn` without support for deep paths.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {Array|string} key The key to check.\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\n */\n\n\n function baseHasIn(object, key) {\n return object != null && key in Object(object);\n }\n /**\n * The base implementation of `_.inRange` which doesn't coerce arguments.\n *\n * @private\n * @param {number} number The number to check.\n * @param {number} start 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 */\n\n\n function baseInRange(number, start, end) {\n return number >= nativeMin(start, end) && number < nativeMax(start, end);\n }\n /**\n * The base implementation of methods like `_.intersection`, without support\n * for iteratee shorthands, that accepts an array of arrays to inspect.\n *\n * @private\n * @param {Array} arrays The arrays to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of shared values.\n */\n\n\n function baseIntersection(arrays, iteratee, comparator) {\n var includes = comparator ? arrayIncludesWith : arrayIncludes,\n length = arrays[0].length,\n othLength = arrays.length,\n othIndex = othLength,\n caches = Array(othLength),\n maxLength = Infinity,\n result = [];\n\n while (othIndex--) {\n var array = arrays[othIndex];\n\n if (othIndex && iteratee) {\n array = arrayMap(array, baseUnary(iteratee));\n }\n\n maxLength = nativeMin(array.length, maxLength);\n caches[othIndex] = !comparator && (iteratee || length >= 120 && array.length >= 120) ? new SetCache(othIndex && array) : undefined;\n }\n\n array = arrays[0];\n var index = -1,\n seen = caches[0];\n\n outer: while (++index < length && result.length < maxLength) {\n var value = array[index],\n computed = iteratee ? iteratee(value) : value;\n value = comparator || value !== 0 ? value : 0;\n\n if (!(seen ? cacheHas(seen, computed) : includes(result, computed, comparator))) {\n othIndex = othLength;\n\n while (--othIndex) {\n var cache = caches[othIndex];\n\n if (!(cache ? cacheHas(cache, computed) : includes(arrays[othIndex], computed, comparator))) {\n continue outer;\n }\n }\n\n if (seen) {\n seen.push(computed);\n }\n\n result.push(value);\n }\n }\n\n return result;\n }\n /**\n * The base implementation of `_.invert` and `_.invertBy` which inverts\n * `object` with values transformed by `iteratee` and set by `setter`.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} setter The function to set `accumulator` values.\n * @param {Function} iteratee The iteratee to transform values.\n * @param {Object} accumulator The initial inverted object.\n * @returns {Function} Returns `accumulator`.\n */\n\n\n function baseInverter(object, setter, iteratee, accumulator) {\n baseForOwn(object, function (value, key, object) {\n setter(accumulator, iteratee(value), key, object);\n });\n return accumulator;\n }\n /**\n * The base implementation of `_.invoke` without support for individual\n * method arguments.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the method to invoke.\n * @param {Array} args The arguments to invoke the method with.\n * @returns {*} Returns the result of the invoked method.\n */\n\n\n function baseInvoke(object, path, args) {\n path = castPath(path, object);\n object = parent(object, path);\n var func = object == null ? object : object[toKey(last(path))];\n return func == null ? undefined : apply(func, object, args);\n }\n /**\n * The base implementation of `_.isArguments`.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n */\n\n\n function baseIsArguments(value) {\n return isObjectLike(value) && baseGetTag(value) == argsTag;\n }\n /**\n * The base implementation of `_.isArrayBuffer` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.\n */\n\n\n function baseIsArrayBuffer(value) {\n return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;\n }\n /**\n * The base implementation of `_.isDate` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a date object, else `false`.\n */\n\n\n function baseIsDate(value) {\n return isObjectLike(value) && baseGetTag(value) == dateTag;\n }\n /**\n * The base implementation of `_.isEqual` which supports partial comparisons\n * and tracks traversed objects.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @param {boolean} bitmask The bitmask flags.\n * 1 - Unordered comparison\n * 2 - Partial comparison\n * @param {Function} [customizer] The function to customize comparisons.\n * @param {Object} [stack] Tracks traversed `value` and `other` objects.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n */\n\n\n function baseIsEqual(value, other, bitmask, customizer, stack) {\n if (value === other) {\n return true;\n }\n\n if (value == null || other == null || !isObjectLike(value) && !isObjectLike(other)) {\n return value !== value && other !== other;\n }\n\n return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);\n }\n /**\n * A specialized version of `baseIsEqual` for arrays and objects which performs\n * deep comparisons and tracks traversed objects enabling objects with circular\n * references to be compared.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} [stack] Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\n\n\n function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {\n var objIsArr = isArray(object),\n othIsArr = isArray(other),\n objTag = objIsArr ? arrayTag : getTag(object),\n othTag = othIsArr ? arrayTag : getTag(other);\n objTag = objTag == argsTag ? objectTag : objTag;\n othTag = othTag == argsTag ? objectTag : othTag;\n var objIsObj = objTag == objectTag,\n othIsObj = othTag == objectTag,\n isSameTag = objTag == othTag;\n\n if (isSameTag && isBuffer(object)) {\n if (!isBuffer(other)) {\n return false;\n }\n\n objIsArr = true;\n objIsObj = false;\n }\n\n if (isSameTag && !objIsObj) {\n stack || (stack = new Stack());\n return objIsArr || isTypedArray(object) ? equalArrays(object, other, bitmask, customizer, equalFunc, stack) : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);\n }\n\n if (!(bitmask & COMPARE_PARTIAL_FLAG)) {\n var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),\n othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');\n\n if (objIsWrapped || othIsWrapped) {\n var objUnwrapped = objIsWrapped ? object.value() : object,\n othUnwrapped = othIsWrapped ? other.value() : other;\n stack || (stack = new Stack());\n return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);\n }\n }\n\n if (!isSameTag) {\n return false;\n }\n\n stack || (stack = new Stack());\n return equalObjects(object, other, bitmask, customizer, equalFunc, stack);\n }\n /**\n * The base implementation of `_.isMap` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a map, else `false`.\n */\n\n\n function baseIsMap(value) {\n return isObjectLike(value) && getTag(value) == mapTag;\n }\n /**\n * The base implementation of `_.isMatch` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property values to match.\n * @param {Array} matchData The property names, values, and compare flags to match.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n */\n\n\n function baseIsMatch(object, source, matchData, customizer) {\n var index = matchData.length,\n length = index,\n noCustomizer = !customizer;\n\n if (object == null) {\n return !length;\n }\n\n object = Object(object);\n\n while (index--) {\n var data = matchData[index];\n\n if (noCustomizer && data[2] ? data[1] !== object[data[0]] : !(data[0] in object)) {\n return false;\n }\n }\n\n while (++index < length) {\n data = matchData[index];\n var key = data[0],\n objValue = object[key],\n srcValue = data[1];\n\n if (noCustomizer && data[2]) {\n if (objValue === undefined && !(key in object)) {\n return false;\n }\n } else {\n var stack = new Stack();\n\n if (customizer) {\n var result = customizer(objValue, srcValue, key, object, source, stack);\n }\n\n if (!(result === undefined ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack) : result)) {\n return false;\n }\n }\n }\n\n return true;\n }\n /**\n * The base implementation of `_.isNative` without bad shim checks.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a native function,\n * else `false`.\n */\n\n\n function baseIsNative(value) {\n if (!isObject(value) || isMasked(value)) {\n return false;\n }\n\n var pattern = isFunction(value) ? reIsNative : reIsHostCtor;\n return pattern.test(toSource(value));\n }\n /**\n * The base implementation of `_.isRegExp` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.\n */\n\n\n function baseIsRegExp(value) {\n return isObjectLike(value) && baseGetTag(value) == regexpTag;\n }\n /**\n * The base implementation of `_.isSet` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a set, else `false`.\n */\n\n\n function baseIsSet(value) {\n return isObjectLike(value) && getTag(value) == setTag;\n }\n /**\n * The base implementation of `_.isTypedArray` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n */\n\n\n function baseIsTypedArray(value) {\n return isObjectLike(value) && isLength(value.length) && !!typedArrayTags[baseGetTag(value)];\n }\n /**\n * The base implementation of `_.iteratee`.\n *\n * @private\n * @param {*} [value=_.identity] The value to convert to an iteratee.\n * @returns {Function} Returns the iteratee.\n */\n\n\n function baseIteratee(value) {\n // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.\n // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.\n if (typeof value == 'function') {\n return value;\n }\n\n if (value == null) {\n return identity;\n }\n\n if (_typeof(value) == 'object') {\n return isArray(value) ? baseMatchesProperty(value[0], value[1]) : baseMatches(value);\n }\n\n return property(value);\n }\n /**\n * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\n\n\n function baseKeys(object) {\n if (!isPrototype(object)) {\n return nativeKeys(object);\n }\n\n var result = [];\n\n for (var key in Object(object)) {\n if (hasOwnProperty.call(object, key) && key != 'constructor') {\n result.push(key);\n }\n }\n\n return result;\n }\n /**\n * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\n\n\n function baseKeysIn(object) {\n if (!isObject(object)) {\n return nativeKeysIn(object);\n }\n\n var isProto = isPrototype(object),\n result = [];\n\n for (var key in object) {\n if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {\n result.push(key);\n }\n }\n\n return result;\n }\n /**\n * The base implementation of `_.lt` which doesn't coerce arguments.\n *\n * @private\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 */\n\n\n function baseLt(value, other) {\n return value < other;\n }\n /**\n * The base implementation of `_.map` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the new mapped array.\n */\n\n\n function baseMap(collection, iteratee) {\n var index = -1,\n result = isArrayLike(collection) ? Array(collection.length) : [];\n baseEach(collection, function (value, key, collection) {\n result[++index] = iteratee(value, key, collection);\n });\n return result;\n }\n /**\n * The base implementation of `_.matches` which doesn't clone `source`.\n *\n * @private\n * @param {Object} source The object of property values to match.\n * @returns {Function} Returns the new spec function.\n */\n\n\n function baseMatches(source) {\n var matchData = getMatchData(source);\n\n if (matchData.length == 1 && matchData[0][2]) {\n return matchesStrictComparable(matchData[0][0], matchData[0][1]);\n }\n\n return function (object) {\n return object === source || baseIsMatch(object, source, matchData);\n };\n }\n /**\n * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.\n *\n * @private\n * @param {string} path The path of the property to get.\n * @param {*} srcValue The value to match.\n * @returns {Function} Returns the new spec function.\n */\n\n\n function baseMatchesProperty(path, srcValue) {\n if (isKey(path) && isStrictComparable(srcValue)) {\n return matchesStrictComparable(toKey(path), srcValue);\n }\n\n return function (object) {\n var objValue = get(object, path);\n return objValue === undefined && objValue === srcValue ? hasIn(object, path) : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);\n };\n }\n /**\n * The base implementation of `_.merge` without support for multiple sources.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @param {number} srcIndex The index of `source`.\n * @param {Function} [customizer] The function to customize merged values.\n * @param {Object} [stack] Tracks traversed source values and their merged\n * counterparts.\n */\n\n\n function baseMerge(object, source, srcIndex, customizer, stack) {\n if (object === source) {\n return;\n }\n\n baseFor(source, function (srcValue, key) {\n stack || (stack = new Stack());\n\n if (isObject(srcValue)) {\n baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);\n } else {\n var newValue = customizer ? customizer(safeGet(object, key), srcValue, key + '', object, source, stack) : undefined;\n\n if (newValue === undefined) {\n newValue = srcValue;\n }\n\n assignMergeValue(object, key, newValue);\n }\n }, keysIn);\n }\n /**\n * A specialized version of `baseMerge` for arrays and objects which performs\n * deep merges and tracks traversed objects enabling objects with circular\n * references to be merged.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @param {string} key The key of the value to merge.\n * @param {number} srcIndex The index of `source`.\n * @param {Function} mergeFunc The function to merge values.\n * @param {Function} [customizer] The function to customize assigned values.\n * @param {Object} [stack] Tracks traversed source values and their merged\n * counterparts.\n */\n\n\n function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {\n var objValue = safeGet(object, key),\n srcValue = safeGet(source, key),\n stacked = stack.get(srcValue);\n\n if (stacked) {\n assignMergeValue(object, key, stacked);\n return;\n }\n\n var newValue = customizer ? customizer(objValue, srcValue, key + '', object, source, stack) : undefined;\n var isCommon = newValue === undefined;\n\n if (isCommon) {\n var isArr = isArray(srcValue),\n isBuff = !isArr && isBuffer(srcValue),\n isTyped = !isArr && !isBuff && isTypedArray(srcValue);\n newValue = srcValue;\n\n if (isArr || isBuff || isTyped) {\n if (isArray(objValue)) {\n newValue = objValue;\n } else if (isArrayLikeObject(objValue)) {\n newValue = copyArray(objValue);\n } else if (isBuff) {\n isCommon = false;\n newValue = cloneBuffer(srcValue, true);\n } else if (isTyped) {\n isCommon = false;\n newValue = cloneTypedArray(srcValue, true);\n } else {\n newValue = [];\n }\n } else if (isPlainObject(srcValue) || isArguments(srcValue)) {\n newValue = objValue;\n\n if (isArguments(objValue)) {\n newValue = toPlainObject(objValue);\n } else if (!isObject(objValue) || isFunction(objValue)) {\n newValue = initCloneObject(srcValue);\n }\n } else {\n isCommon = false;\n }\n }\n\n if (isCommon) {\n // Recursively merge objects and arrays (susceptible to call stack limits).\n stack.set(srcValue, newValue);\n mergeFunc(newValue, srcValue, srcIndex, customizer, stack);\n stack['delete'](srcValue);\n }\n\n assignMergeValue(object, key, newValue);\n }\n /**\n * The base implementation of `_.nth` which doesn't coerce arguments.\n *\n * @private\n * @param {Array} array The array to query.\n * @param {number} n The index of the element to return.\n * @returns {*} Returns the nth element of `array`.\n */\n\n\n function baseNth(array, n) {\n var length = array.length;\n\n if (!length) {\n return;\n }\n\n n += n < 0 ? length : 0;\n return isIndex(n, length) ? array[n] : undefined;\n }\n /**\n * The base implementation of `_.orderBy` without param guards.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.\n * @param {string[]} orders The sort orders of `iteratees`.\n * @returns {Array} Returns the new sorted array.\n */\n\n\n function baseOrderBy(collection, iteratees, orders) {\n if (iteratees.length) {\n iteratees = arrayMap(iteratees, function (iteratee) {\n if (isArray(iteratee)) {\n return function (value) {\n return baseGet(value, iteratee.length === 1 ? iteratee[0] : iteratee);\n };\n }\n\n return iteratee;\n });\n } else {\n iteratees = [identity];\n }\n\n var index = -1;\n iteratees = arrayMap(iteratees, baseUnary(getIteratee()));\n var result = baseMap(collection, function (value, key, collection) {\n var criteria = arrayMap(iteratees, function (iteratee) {\n return iteratee(value);\n });\n return {\n 'criteria': criteria,\n 'index': ++index,\n 'value': value\n };\n });\n return baseSortBy(result, function (object, other) {\n return compareMultiple(object, other, orders);\n });\n }\n /**\n * The base implementation of `_.pick` without support for individual\n * property identifiers.\n *\n * @private\n * @param {Object} object The source object.\n * @param {string[]} paths The property paths to pick.\n * @returns {Object} Returns the new object.\n */\n\n\n function basePick(object, paths) {\n return basePickBy(object, paths, function (value, path) {\n return hasIn(object, path);\n });\n }\n /**\n * The base implementation of `_.pickBy` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The source object.\n * @param {string[]} paths The property paths to pick.\n * @param {Function} predicate The function invoked per property.\n * @returns {Object} Returns the new object.\n */\n\n\n function basePickBy(object, paths, predicate) {\n var index = -1,\n length = paths.length,\n result = {};\n\n while (++index < length) {\n var path = paths[index],\n value = baseGet(object, path);\n\n if (predicate(value, path)) {\n baseSet(result, castPath(path, object), value);\n }\n }\n\n return result;\n }\n /**\n * A specialized version of `baseProperty` which supports deep paths.\n *\n * @private\n * @param {Array|string} path The path of the property to get.\n * @returns {Function} Returns the new accessor function.\n */\n\n\n function basePropertyDeep(path) {\n return function (object) {\n return baseGet(object, path);\n };\n }\n /**\n * The base implementation of `_.pullAllBy` without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns `array`.\n */\n\n\n function basePullAll(array, values, iteratee, comparator) {\n var indexOf = comparator ? baseIndexOfWith : baseIndexOf,\n index = -1,\n length = values.length,\n seen = array;\n\n if (array === values) {\n values = copyArray(values);\n }\n\n if (iteratee) {\n seen = arrayMap(array, baseUnary(iteratee));\n }\n\n while (++index < length) {\n var fromIndex = 0,\n value = values[index],\n computed = iteratee ? iteratee(value) : value;\n\n while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {\n if (seen !== array) {\n splice.call(seen, fromIndex, 1);\n }\n\n splice.call(array, fromIndex, 1);\n }\n }\n\n return array;\n }\n /**\n * The base implementation of `_.pullAt` without support for individual\n * indexes or capturing the removed elements.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {number[]} indexes The indexes of elements to remove.\n * @returns {Array} Returns `array`.\n */\n\n\n function basePullAt(array, indexes) {\n var length = array ? indexes.length : 0,\n lastIndex = length - 1;\n\n while (length--) {\n var index = indexes[length];\n\n if (length == lastIndex || index !== previous) {\n var previous = index;\n\n if (isIndex(index)) {\n splice.call(array, index, 1);\n } else {\n baseUnset(array, index);\n }\n }\n }\n\n return array;\n }\n /**\n * The base implementation of `_.random` without support for returning\n * floating-point numbers.\n *\n * @private\n * @param {number} lower The lower bound.\n * @param {number} upper The upper bound.\n * @returns {number} Returns the random number.\n */\n\n\n function baseRandom(lower, upper) {\n return lower + nativeFloor(nativeRandom() * (upper - lower + 1));\n }\n /**\n * The base implementation of `_.range` and `_.rangeRight` which doesn't\n * coerce arguments.\n *\n * @private\n * @param {number} start The start of the range.\n * @param {number} end The end of the range.\n * @param {number} step The value to increment or decrement by.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Array} Returns the range of numbers.\n */\n\n\n function baseRange(start, end, step, fromRight) {\n var index = -1,\n length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),\n result = Array(length);\n\n while (length--) {\n result[fromRight ? length : ++index] = start;\n start += step;\n }\n\n return result;\n }\n /**\n * The base implementation of `_.repeat` which doesn't coerce arguments.\n *\n * @private\n * @param {string} string The string to repeat.\n * @param {number} n The number of times to repeat the string.\n * @returns {string} Returns the repeated string.\n */\n\n\n function baseRepeat(string, n) {\n var result = '';\n\n if (!string || n < 1 || n > MAX_SAFE_INTEGER) {\n return result;\n } // Leverage the exponentiation by squaring algorithm for a faster repeat.\n // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.\n\n\n do {\n if (n % 2) {\n result += string;\n }\n\n n = nativeFloor(n / 2);\n\n if (n) {\n string += string;\n }\n } while (n);\n\n return result;\n }\n /**\n * The base implementation of `_.rest` which doesn't validate or coerce arguments.\n *\n * @private\n * @param {Function} func The function to apply a rest parameter to.\n * @param {number} [start=func.length-1] The start position of the rest parameter.\n * @returns {Function} Returns the new function.\n */\n\n\n function baseRest(func, start) {\n return setToString(overRest(func, start, identity), func + '');\n }\n /**\n * The base implementation of `_.sample`.\n *\n * @private\n * @param {Array|Object} collection The collection to sample.\n * @returns {*} Returns the random element.\n */\n\n\n function baseSample(collection) {\n return arraySample(values(collection));\n }\n /**\n * The base implementation of `_.sampleSize` without param guards.\n *\n * @private\n * @param {Array|Object} collection The collection to sample.\n * @param {number} n The number of elements to sample.\n * @returns {Array} Returns the random elements.\n */\n\n\n function baseSampleSize(collection, n) {\n var array = values(collection);\n return shuffleSelf(array, baseClamp(n, 0, array.length));\n }\n /**\n * The base implementation of `_.set`.\n *\n * @private\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 path creation.\n * @returns {Object} Returns `object`.\n */\n\n\n function baseSet(object, path, value, customizer) {\n if (!isObject(object)) {\n return object;\n }\n\n path = castPath(path, object);\n var index = -1,\n length = path.length,\n lastIndex = length - 1,\n nested = object;\n\n while (nested != null && ++index < length) {\n var key = toKey(path[index]),\n newValue = value;\n\n if (key === '__proto__' || key === 'constructor' || key === 'prototype') {\n return object;\n }\n\n if (index != lastIndex) {\n var objValue = nested[key];\n newValue = customizer ? customizer(objValue, key, nested) : undefined;\n\n if (newValue === undefined) {\n newValue = isObject(objValue) ? objValue : isIndex(path[index + 1]) ? [] : {};\n }\n }\n\n assignValue(nested, key, newValue);\n nested = nested[key];\n }\n\n return object;\n }\n /**\n * The base implementation of `setData` without support for hot loop shorting.\n *\n * @private\n * @param {Function} func The function to associate metadata with.\n * @param {*} data The metadata.\n * @returns {Function} Returns `func`.\n */\n\n\n var baseSetData = !metaMap ? identity : function (func, data) {\n metaMap.set(func, data);\n return func;\n };\n /**\n * The base implementation of `setToString` without support for hot loop shorting.\n *\n * @private\n * @param {Function} func The function to modify.\n * @param {Function} string The `toString` result.\n * @returns {Function} Returns `func`.\n */\n\n var baseSetToString = !defineProperty ? identity : function (func, string) {\n return defineProperty(func, 'toString', {\n 'configurable': true,\n 'enumerable': false,\n 'value': constant(string),\n 'writable': true\n });\n };\n /**\n * The base implementation of `_.shuffle`.\n *\n * @private\n * @param {Array|Object} collection The collection to shuffle.\n * @returns {Array} Returns the new shuffled array.\n */\n\n function baseShuffle(collection) {\n return shuffleSelf(values(collection));\n }\n /**\n * The base implementation of `_.slice` without an iteratee call guard.\n *\n * @private\n * @param {Array} array The array to slice.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the slice of `array`.\n */\n\n\n function baseSlice(array, start, end) {\n var index = -1,\n length = array.length;\n\n if (start < 0) {\n start = -start > length ? 0 : length + start;\n }\n\n end = end > length ? length : end;\n\n if (end < 0) {\n end += length;\n }\n\n length = start > end ? 0 : end - start >>> 0;\n start >>>= 0;\n var result = Array(length);\n\n while (++index < length) {\n result[index] = array[index + start];\n }\n\n return result;\n }\n /**\n * The base implementation of `_.some` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n * else `false`.\n */\n\n\n function baseSome(collection, predicate) {\n var result;\n baseEach(collection, function (value, index, collection) {\n result = predicate(value, index, collection);\n return !result;\n });\n return !!result;\n }\n /**\n * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which\n * performs a binary search of `array` to determine the index at which `value`\n * should be inserted into `array` in order to maintain its sort order.\n *\n * @private\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {boolean} [retHighest] Specify returning the highest qualified index.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n */\n\n\n function baseSortedIndex(array, value, retHighest) {\n var low = 0,\n high = array == null ? low : array.length;\n\n if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {\n while (low < high) {\n var mid = low + high >>> 1,\n computed = array[mid];\n\n if (computed !== null && !isSymbol(computed) && (retHighest ? computed <= value : computed < value)) {\n low = mid + 1;\n } else {\n high = mid;\n }\n }\n\n return high;\n }\n\n return baseSortedIndexBy(array, value, identity, retHighest);\n }\n /**\n * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`\n * which invokes `iteratee` for `value` and each element of `array` to compute\n * their sort ranking. The iteratee is invoked with one argument; (value).\n *\n * @private\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Function} iteratee The iteratee invoked per element.\n * @param {boolean} [retHighest] Specify returning the highest qualified index.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n */\n\n\n function baseSortedIndexBy(array, value, iteratee, retHighest) {\n var low = 0,\n high = array == null ? 0 : array.length;\n\n if (high === 0) {\n return 0;\n }\n\n value = iteratee(value);\n var valIsNaN = value !== value,\n valIsNull = value === null,\n valIsSymbol = isSymbol(value),\n valIsUndefined = value === undefined;\n\n while (low < high) {\n var mid = nativeFloor((low + high) / 2),\n computed = iteratee(array[mid]),\n othIsDefined = computed !== undefined,\n othIsNull = computed === null,\n othIsReflexive = computed === computed,\n othIsSymbol = isSymbol(computed);\n\n if (valIsNaN) {\n var setLow = retHighest || othIsReflexive;\n } else if (valIsUndefined) {\n setLow = othIsReflexive && (retHighest || othIsDefined);\n } else if (valIsNull) {\n setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);\n } else if (valIsSymbol) {\n setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);\n } else if (othIsNull || othIsSymbol) {\n setLow = false;\n } else {\n setLow = retHighest ? computed <= value : computed < value;\n }\n\n if (setLow) {\n low = mid + 1;\n } else {\n high = mid;\n }\n }\n\n return nativeMin(high, MAX_ARRAY_INDEX);\n }\n /**\n * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without\n * support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n */\n\n\n function baseSortedUniq(array, iteratee) {\n var index = -1,\n length = array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index],\n computed = iteratee ? iteratee(value) : value;\n\n if (!index || !eq(computed, seen)) {\n var seen = computed;\n result[resIndex++] = value === 0 ? 0 : value;\n }\n }\n\n return result;\n }\n /**\n * The base implementation of `_.toNumber` which doesn't ensure correct\n * conversions of binary, hexadecimal, or octal string values.\n *\n * @private\n * @param {*} value The value to process.\n * @returns {number} Returns the number.\n */\n\n\n function baseToNumber(value) {\n if (typeof value == 'number') {\n return value;\n }\n\n if (isSymbol(value)) {\n return NAN;\n }\n\n return +value;\n }\n /**\n * The base implementation of `_.toString` which doesn't convert nullish\n * values to empty strings.\n *\n * @private\n * @param {*} value The value to process.\n * @returns {string} Returns the string.\n */\n\n\n function baseToString(value) {\n // Exit early for strings to avoid a performance hit in some environments.\n if (typeof value == 'string') {\n return value;\n }\n\n if (isArray(value)) {\n // Recursively convert values (susceptible to call stack limits).\n return arrayMap(value, baseToString) + '';\n }\n\n if (isSymbol(value)) {\n return symbolToString ? symbolToString.call(value) : '';\n }\n\n var result = value + '';\n return result == '0' && 1 / value == -INFINITY ? '-0' : result;\n }\n /**\n * The base implementation of `_.uniqBy` without support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n */\n\n\n function baseUniq(array, iteratee, comparator) {\n var index = -1,\n includes = arrayIncludes,\n length = array.length,\n isCommon = true,\n result = [],\n seen = result;\n\n if (comparator) {\n isCommon = false;\n includes = arrayIncludesWith;\n } else if (length >= LARGE_ARRAY_SIZE) {\n var set = iteratee ? null : createSet(array);\n\n if (set) {\n return setToArray(set);\n }\n\n isCommon = false;\n includes = cacheHas;\n seen = new SetCache();\n } else {\n seen = iteratee ? [] : result;\n }\n\n outer: while (++index < length) {\n var value = array[index],\n computed = iteratee ? iteratee(value) : value;\n value = comparator || value !== 0 ? value : 0;\n\n if (isCommon && computed === computed) {\n var seenIndex = seen.length;\n\n while (seenIndex--) {\n if (seen[seenIndex] === computed) {\n continue outer;\n }\n }\n\n if (iteratee) {\n seen.push(computed);\n }\n\n result.push(value);\n } else if (!includes(seen, computed, comparator)) {\n if (seen !== result) {\n seen.push(computed);\n }\n\n result.push(value);\n }\n }\n\n return result;\n }\n /**\n * The base implementation of `_.unset`.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {Array|string} path The property path to unset.\n * @returns {boolean} Returns `true` if the property is deleted, else `false`.\n */\n\n\n function baseUnset(object, path) {\n path = castPath(path, object);\n object = parent(object, path);\n return object == null || delete object[toKey(last(path))];\n }\n /**\n * The base implementation of `_.update`.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to update.\n * @param {Function} updater The function to produce the updated value.\n * @param {Function} [customizer] The function to customize path creation.\n * @returns {Object} Returns `object`.\n */\n\n\n function baseUpdate(object, path, updater, customizer) {\n return baseSet(object, path, updater(baseGet(object, path)), customizer);\n }\n /**\n * The base implementation of methods like `_.dropWhile` and `_.takeWhile`\n * without support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to query.\n * @param {Function} predicate The function invoked per iteration.\n * @param {boolean} [isDrop] Specify dropping elements instead of taking them.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Array} Returns the slice of `array`.\n */\n\n\n function baseWhile(array, predicate, isDrop, fromRight) {\n var length = array.length,\n index = fromRight ? length : -1;\n\n while ((fromRight ? index-- : ++index < length) && predicate(array[index], index, array)) {}\n\n return isDrop ? baseSlice(array, fromRight ? 0 : index, fromRight ? index + 1 : length) : baseSlice(array, fromRight ? index + 1 : 0, fromRight ? length : index);\n }\n /**\n * The base implementation of `wrapperValue` which returns the result of\n * performing a sequence of actions on the unwrapped `value`, where each\n * successive action is supplied the return value of the previous.\n *\n * @private\n * @param {*} value The unwrapped value.\n * @param {Array} actions Actions to perform to resolve the unwrapped value.\n * @returns {*} Returns the resolved value.\n */\n\n\n function baseWrapperValue(value, actions) {\n var result = value;\n\n if (result instanceof LazyWrapper) {\n result = result.value();\n }\n\n return arrayReduce(actions, function (result, action) {\n return action.func.apply(action.thisArg, arrayPush([result], action.args));\n }, result);\n }\n /**\n * The base implementation of methods like `_.xor`, without support for\n * iteratee shorthands, that accepts an array of arrays to inspect.\n *\n * @private\n * @param {Array} arrays The arrays to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of values.\n */\n\n\n function baseXor(arrays, iteratee, comparator) {\n var length = arrays.length;\n\n if (length < 2) {\n return length ? baseUniq(arrays[0]) : [];\n }\n\n var index = -1,\n result = Array(length);\n\n while (++index < length) {\n var array = arrays[index],\n othIndex = -1;\n\n while (++othIndex < length) {\n if (othIndex != index) {\n result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);\n }\n }\n }\n\n return baseUniq(baseFlatten(result, 1), iteratee, comparator);\n }\n /**\n * This base implementation of `_.zipObject` which assigns values using `assignFunc`.\n *\n * @private\n * @param {Array} props The property identifiers.\n * @param {Array} values The property values.\n * @param {Function} assignFunc The function to assign values.\n * @returns {Object} Returns the new object.\n */\n\n\n function baseZipObject(props, values, assignFunc) {\n var index = -1,\n length = props.length,\n valsLength = values.length,\n result = {};\n\n while (++index < length) {\n var value = index < valsLength ? values[index] : undefined;\n assignFunc(result, props[index], value);\n }\n\n return result;\n }\n /**\n * Casts `value` to an empty array if it's not an array like object.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {Array|Object} Returns the cast array-like object.\n */\n\n\n function castArrayLikeObject(value) {\n return isArrayLikeObject(value) ? value : [];\n }\n /**\n * Casts `value` to `identity` if it's not a function.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {Function} Returns cast function.\n */\n\n\n function castFunction(value) {\n return typeof value == 'function' ? value : identity;\n }\n /**\n * Casts `value` to a path array if it's not one.\n *\n * @private\n * @param {*} value The value to inspect.\n * @param {Object} [object] The object to query keys on.\n * @returns {Array} Returns the cast property path array.\n */\n\n\n function castPath(value, object) {\n if (isArray(value)) {\n return value;\n }\n\n return isKey(value, object) ? [value] : stringToPath(toString(value));\n }\n /**\n * A `baseRest` alias which can be replaced with `identity` by module\n * replacement plugins.\n *\n * @private\n * @type {Function}\n * @param {Function} func The function to apply a rest parameter to.\n * @returns {Function} Returns the new function.\n */\n\n\n var castRest = baseRest;\n /**\n * Casts `array` to a slice if it's needed.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {number} start The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the cast slice.\n */\n\n function castSlice(array, start, end) {\n var length = array.length;\n end = end === undefined ? length : end;\n return !start && end >= length ? array : baseSlice(array, start, end);\n }\n /**\n * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout).\n *\n * @private\n * @param {number|Object} id The timer id or timeout object of the timer to clear.\n */\n\n\n var clearTimeout = ctxClearTimeout || function (id) {\n return root.clearTimeout(id);\n };\n /**\n * Creates a clone of `buffer`.\n *\n * @private\n * @param {Buffer} buffer The buffer to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Buffer} Returns the cloned buffer.\n */\n\n\n function cloneBuffer(buffer, isDeep) {\n if (isDeep) {\n return buffer.slice();\n }\n\n var length = buffer.length,\n result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);\n buffer.copy(result);\n return result;\n }\n /**\n * Creates a clone of `arrayBuffer`.\n *\n * @private\n * @param {ArrayBuffer} arrayBuffer The array buffer to clone.\n * @returns {ArrayBuffer} Returns the cloned array buffer.\n */\n\n\n function cloneArrayBuffer(arrayBuffer) {\n var result = new arrayBuffer.constructor(arrayBuffer.byteLength);\n new Uint8Array(result).set(new Uint8Array(arrayBuffer));\n return result;\n }\n /**\n * Creates a clone of `dataView`.\n *\n * @private\n * @param {Object} dataView The data view to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned data view.\n */\n\n\n function cloneDataView(dataView, isDeep) {\n var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;\n return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);\n }\n /**\n * Creates a clone of `regexp`.\n *\n * @private\n * @param {Object} regexp The regexp to clone.\n * @returns {Object} Returns the cloned regexp.\n */\n\n\n function cloneRegExp(regexp) {\n var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));\n result.lastIndex = regexp.lastIndex;\n return result;\n }\n /**\n * Creates a clone of the `symbol` object.\n *\n * @private\n * @param {Object} symbol The symbol object to clone.\n * @returns {Object} Returns the cloned symbol object.\n */\n\n\n function cloneSymbol(symbol) {\n return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};\n }\n /**\n * Creates a clone of `typedArray`.\n *\n * @private\n * @param {Object} typedArray The typed array to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned typed array.\n */\n\n\n function cloneTypedArray(typedArray, isDeep) {\n var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;\n return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);\n }\n /**\n * Compares values to sort them in ascending order.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {number} Returns the sort order indicator for `value`.\n */\n\n\n function compareAscending(value, other) {\n if (value !== other) {\n var valIsDefined = value !== undefined,\n valIsNull = value === null,\n valIsReflexive = value === value,\n valIsSymbol = isSymbol(value);\n var othIsDefined = other !== undefined,\n othIsNull = other === null,\n othIsReflexive = other === other,\n othIsSymbol = isSymbol(other);\n\n if (!othIsNull && !othIsSymbol && !valIsSymbol && value > other || valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol || valIsNull && othIsDefined && othIsReflexive || !valIsDefined && othIsReflexive || !valIsReflexive) {\n return 1;\n }\n\n if (!valIsNull && !valIsSymbol && !othIsSymbol && value < other || othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol || othIsNull && valIsDefined && valIsReflexive || !othIsDefined && valIsReflexive || !othIsReflexive) {\n return -1;\n }\n }\n\n return 0;\n }\n /**\n * Used by `_.orderBy` to compare multiple properties of a value to another\n * and stable sort them.\n *\n * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,\n * specify an order of \"desc\" for descending or \"asc\" for ascending sort order\n * of corresponding values.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {boolean[]|string[]} orders The order to sort by for each property.\n * @returns {number} Returns the sort order indicator for `object`.\n */\n\n\n function compareMultiple(object, other, orders) {\n var index = -1,\n objCriteria = object.criteria,\n othCriteria = other.criteria,\n length = objCriteria.length,\n ordersLength = orders.length;\n\n while (++index < length) {\n var result = compareAscending(objCriteria[index], othCriteria[index]);\n\n if (result) {\n if (index >= ordersLength) {\n return result;\n }\n\n var order = orders[index];\n return result * (order == 'desc' ? -1 : 1);\n }\n } // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications\n // that causes it, under certain circumstances, to provide the same value for\n // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247\n // for more details.\n //\n // This also ensures a stable sort in V8 and other engines.\n // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.\n\n\n return object.index - other.index;\n }\n /**\n * Creates an array that is the composition of partially applied arguments,\n * placeholders, and provided arguments into a single array of arguments.\n *\n * @private\n * @param {Array} args The provided arguments.\n * @param {Array} partials The arguments to prepend to those provided.\n * @param {Array} holders The `partials` placeholder indexes.\n * @params {boolean} [isCurried] Specify composing for a curried function.\n * @returns {Array} Returns the new array of composed arguments.\n */\n\n\n function composeArgs(args, partials, holders, isCurried) {\n var argsIndex = -1,\n argsLength = args.length,\n holdersLength = holders.length,\n leftIndex = -1,\n leftLength = partials.length,\n rangeLength = nativeMax(argsLength - holdersLength, 0),\n result = Array(leftLength + rangeLength),\n isUncurried = !isCurried;\n\n while (++leftIndex < leftLength) {\n result[leftIndex] = partials[leftIndex];\n }\n\n while (++argsIndex < holdersLength) {\n if (isUncurried || argsIndex < argsLength) {\n result[holders[argsIndex]] = args[argsIndex];\n }\n }\n\n while (rangeLength--) {\n result[leftIndex++] = args[argsIndex++];\n }\n\n return result;\n }\n /**\n * This function is like `composeArgs` except that the arguments composition\n * is tailored for `_.partialRight`.\n *\n * @private\n * @param {Array} args The provided arguments.\n * @param {Array} partials The arguments to append to those provided.\n * @param {Array} holders The `partials` placeholder indexes.\n * @params {boolean} [isCurried] Specify composing for a curried function.\n * @returns {Array} Returns the new array of composed arguments.\n */\n\n\n function composeArgsRight(args, partials, holders, isCurried) {\n var argsIndex = -1,\n argsLength = args.length,\n holdersIndex = -1,\n holdersLength = holders.length,\n rightIndex = -1,\n rightLength = partials.length,\n rangeLength = nativeMax(argsLength - holdersLength, 0),\n result = Array(rangeLength + rightLength),\n isUncurried = !isCurried;\n\n while (++argsIndex < rangeLength) {\n result[argsIndex] = args[argsIndex];\n }\n\n var offset = argsIndex;\n\n while (++rightIndex < rightLength) {\n result[offset + rightIndex] = partials[rightIndex];\n }\n\n while (++holdersIndex < holdersLength) {\n if (isUncurried || argsIndex < argsLength) {\n result[offset + holders[holdersIndex]] = args[argsIndex++];\n }\n }\n\n return result;\n }\n /**\n * Copies the values of `source` to `array`.\n *\n * @private\n * @param {Array} source The array to copy values from.\n * @param {Array} [array=[]] The array to copy values to.\n * @returns {Array} Returns `array`.\n */\n\n\n function copyArray(source, array) {\n var index = -1,\n length = source.length;\n array || (array = Array(length));\n\n while (++index < length) {\n array[index] = source[index];\n }\n\n return array;\n }\n /**\n * Copies properties of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy properties from.\n * @param {Array} props The property identifiers to copy.\n * @param {Object} [object={}] The object to copy properties to.\n * @param {Function} [customizer] The function to customize copied values.\n * @returns {Object} Returns `object`.\n */\n\n\n function copyObject(source, props, object, customizer) {\n var isNew = !object;\n object || (object = {});\n var index = -1,\n length = props.length;\n\n while (++index < length) {\n var key = props[index];\n var newValue = customizer ? customizer(object[key], source[key], key, object, source) : undefined;\n\n if (newValue === undefined) {\n newValue = source[key];\n }\n\n if (isNew) {\n baseAssignValue(object, key, newValue);\n } else {\n assignValue(object, key, newValue);\n }\n }\n\n return object;\n }\n /**\n * Copies own symbols of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy symbols from.\n * @param {Object} [object={}] The object to copy symbols to.\n * @returns {Object} Returns `object`.\n */\n\n\n function copySymbols(source, object) {\n return copyObject(source, getSymbols(source), object);\n }\n /**\n * Copies own and inherited symbols of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy symbols from.\n * @param {Object} [object={}] The object to copy symbols to.\n * @returns {Object} Returns `object`.\n */\n\n\n function copySymbolsIn(source, object) {\n return copyObject(source, getSymbolsIn(source), object);\n }\n /**\n * Creates a function like `_.groupBy`.\n *\n * @private\n * @param {Function} setter The function to set accumulator values.\n * @param {Function} [initializer] The accumulator object initializer.\n * @returns {Function} Returns the new aggregator function.\n */\n\n\n function createAggregator(setter, initializer) {\n return function (collection, iteratee) {\n var func = isArray(collection) ? arrayAggregator : baseAggregator,\n accumulator = initializer ? initializer() : {};\n return func(collection, setter, getIteratee(iteratee, 2), accumulator);\n };\n }\n /**\n * Creates a function like `_.assign`.\n *\n * @private\n * @param {Function} assigner The function to assign values.\n * @returns {Function} Returns the new assigner function.\n */\n\n\n function createAssigner(assigner) {\n return baseRest(function (object, sources) {\n var index = -1,\n length = sources.length,\n customizer = length > 1 ? sources[length - 1] : undefined,\n guard = length > 2 ? sources[2] : undefined;\n customizer = assigner.length > 3 && typeof customizer == 'function' ? (length--, customizer) : undefined;\n\n if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n customizer = length < 3 ? undefined : customizer;\n length = 1;\n }\n\n object = Object(object);\n\n while (++index < length) {\n var source = sources[index];\n\n if (source) {\n assigner(object, source, index, customizer);\n }\n }\n\n return object;\n });\n }\n /**\n * Creates a `baseEach` or `baseEachRight` function.\n *\n * @private\n * @param {Function} eachFunc The function to iterate over a collection.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new base function.\n */\n\n\n function createBaseEach(eachFunc, fromRight) {\n return function (collection, iteratee) {\n if (collection == null) {\n return collection;\n }\n\n if (!isArrayLike(collection)) {\n return eachFunc(collection, iteratee);\n }\n\n var length = collection.length,\n index = fromRight ? length : -1,\n iterable = Object(collection);\n\n while (fromRight ? index-- : ++index < length) {\n if (iteratee(iterable[index], index, iterable) === false) {\n break;\n }\n }\n\n return collection;\n };\n }\n /**\n * Creates a base function for methods like `_.forIn` and `_.forOwn`.\n *\n * @private\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new base function.\n */\n\n\n function createBaseFor(fromRight) {\n return function (object, iteratee, keysFunc) {\n var index = -1,\n iterable = Object(object),\n props = keysFunc(object),\n length = props.length;\n\n while (length--) {\n var key = props[fromRight ? length : ++index];\n\n if (iteratee(iterable[key], key, iterable) === false) {\n break;\n }\n }\n\n return object;\n };\n }\n /**\n * Creates a function that wraps `func` to invoke it with the optional `this`\n * binding of `thisArg`.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {*} [thisArg] The `this` binding of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n\n\n function createBind(func, bitmask, thisArg) {\n var isBind = bitmask & WRAP_BIND_FLAG,\n Ctor = createCtor(func);\n\n function wrapper() {\n var fn = this && this !== root && this instanceof wrapper ? Ctor : func;\n return fn.apply(isBind ? thisArg : this, arguments);\n }\n\n return wrapper;\n }\n /**\n * Creates a function like `_.lowerFirst`.\n *\n * @private\n * @param {string} methodName The name of the `String` case method to use.\n * @returns {Function} Returns the new case function.\n */\n\n\n function createCaseFirst(methodName) {\n return function (string) {\n string = toString(string);\n var strSymbols = hasUnicode(string) ? stringToArray(string) : undefined;\n var chr = strSymbols ? strSymbols[0] : string.charAt(0);\n var trailing = strSymbols ? castSlice(strSymbols, 1).join('') : string.slice(1);\n return chr[methodName]() + trailing;\n };\n }\n /**\n * Creates a function like `_.camelCase`.\n *\n * @private\n * @param {Function} callback The function to combine each word.\n * @returns {Function} Returns the new compounder function.\n */\n\n\n function createCompounder(callback) {\n return function (string) {\n return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');\n };\n }\n /**\n * Creates a function that produces an instance of `Ctor` regardless of\n * whether it was invoked as part of a `new` expression or by `call` or `apply`.\n *\n * @private\n * @param {Function} Ctor The constructor to wrap.\n * @returns {Function} Returns the new wrapped function.\n */\n\n\n function createCtor(Ctor) {\n return function () {\n // Use a `switch` statement to work with class constructors. See\n // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist\n // for more details.\n var args = arguments;\n\n switch (args.length) {\n case 0:\n return new Ctor();\n\n case 1:\n return new Ctor(args[0]);\n\n case 2:\n return new Ctor(args[0], args[1]);\n\n case 3:\n return new Ctor(args[0], args[1], args[2]);\n\n case 4:\n return new Ctor(args[0], args[1], args[2], args[3]);\n\n case 5:\n return new Ctor(args[0], args[1], args[2], args[3], args[4]);\n\n case 6:\n return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);\n\n case 7:\n return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);\n }\n\n var thisBinding = baseCreate(Ctor.prototype),\n result = Ctor.apply(thisBinding, args); // Mimic the constructor's `return` behavior.\n // See https://es5.github.io/#x13.2.2 for more details.\n\n return isObject(result) ? result : thisBinding;\n };\n }\n /**\n * Creates a function that wraps `func` to enable currying.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {number} arity The arity of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n\n\n function createCurry(func, bitmask, arity) {\n var Ctor = createCtor(func);\n\n function wrapper() {\n var length = arguments.length,\n args = Array(length),\n index = length,\n placeholder = getHolder(wrapper);\n\n while (index--) {\n args[index] = arguments[index];\n }\n\n var holders = length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder ? [] : replaceHolders(args, placeholder);\n length -= holders.length;\n\n if (length < arity) {\n return createRecurry(func, bitmask, createHybrid, wrapper.placeholder, undefined, args, holders, undefined, undefined, arity - length);\n }\n\n var fn = this && this !== root && this instanceof wrapper ? Ctor : func;\n return apply(fn, this, args);\n }\n\n return wrapper;\n }\n /**\n * Creates a `_.find` or `_.findLast` function.\n *\n * @private\n * @param {Function} findIndexFunc The function to find the collection index.\n * @returns {Function} Returns the new find function.\n */\n\n\n function createFind(findIndexFunc) {\n return function (collection, predicate, fromIndex) {\n var iterable = Object(collection);\n\n if (!isArrayLike(collection)) {\n var iteratee = getIteratee(predicate, 3);\n collection = keys(collection);\n\n predicate = function predicate(key) {\n return iteratee(iterable[key], key, iterable);\n };\n }\n\n var index = findIndexFunc(collection, predicate, fromIndex);\n return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined;\n };\n }\n /**\n * Creates a `_.flow` or `_.flowRight` function.\n *\n * @private\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new flow function.\n */\n\n\n function createFlow(fromRight) {\n return flatRest(function (funcs) {\n var length = funcs.length,\n index = length,\n prereq = LodashWrapper.prototype.thru;\n\n if (fromRight) {\n funcs.reverse();\n }\n\n while (index--) {\n var func = funcs[index];\n\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n\n if (prereq && !wrapper && getFuncName(func) == 'wrapper') {\n var wrapper = new LodashWrapper([], true);\n }\n }\n\n index = wrapper ? index : length;\n\n while (++index < length) {\n func = funcs[index];\n var funcName = getFuncName(func),\n data = funcName == 'wrapper' ? getData(func) : undefined;\n\n if (data && isLaziable(data[0]) && data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) && !data[4].length && data[9] == 1) {\n wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);\n } else {\n wrapper = func.length == 1 && isLaziable(func) ? wrapper[funcName]() : wrapper.thru(func);\n }\n }\n\n return function () {\n var args = arguments,\n value = args[0];\n\n if (wrapper && args.length == 1 && isArray(value)) {\n return wrapper.plant(value).value();\n }\n\n var index = 0,\n result = length ? funcs[index].apply(this, args) : value;\n\n while (++index < length) {\n result = funcs[index].call(this, result);\n }\n\n return result;\n };\n });\n }\n /**\n * Creates a function that wraps `func` to invoke it with optional `this`\n * binding of `thisArg`, partial application, and currying.\n *\n * @private\n * @param {Function|string} func The function or method name to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {*} [thisArg] The `this` binding of `func`.\n * @param {Array} [partials] The arguments to prepend to those provided to\n * the new function.\n * @param {Array} [holders] The `partials` placeholder indexes.\n * @param {Array} [partialsRight] The arguments to append to those provided\n * to the new function.\n * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.\n * @param {Array} [argPos] The argument positions of the new function.\n * @param {number} [ary] The arity cap of `func`.\n * @param {number} [arity] The arity of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n\n\n function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {\n var isAry = bitmask & WRAP_ARY_FLAG,\n isBind = bitmask & WRAP_BIND_FLAG,\n isBindKey = bitmask & WRAP_BIND_KEY_FLAG,\n isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),\n isFlip = bitmask & WRAP_FLIP_FLAG,\n Ctor = isBindKey ? undefined : createCtor(func);\n\n function wrapper() {\n var length = arguments.length,\n args = Array(length),\n index = length;\n\n while (index--) {\n args[index] = arguments[index];\n }\n\n if (isCurried) {\n var placeholder = getHolder(wrapper),\n holdersCount = countHolders(args, placeholder);\n }\n\n if (partials) {\n args = composeArgs(args, partials, holders, isCurried);\n }\n\n if (partialsRight) {\n args = composeArgsRight(args, partialsRight, holdersRight, isCurried);\n }\n\n length -= holdersCount;\n\n if (isCurried && length < arity) {\n var newHolders = replaceHolders(args, placeholder);\n return createRecurry(func, bitmask, createHybrid, wrapper.placeholder, thisArg, args, newHolders, argPos, ary, arity - length);\n }\n\n var thisBinding = isBind ? thisArg : this,\n fn = isBindKey ? thisBinding[func] : func;\n length = args.length;\n\n if (argPos) {\n args = reorder(args, argPos);\n } else if (isFlip && length > 1) {\n args.reverse();\n }\n\n if (isAry && ary < length) {\n args.length = ary;\n }\n\n if (this && this !== root && this instanceof wrapper) {\n fn = Ctor || createCtor(fn);\n }\n\n return fn.apply(thisBinding, args);\n }\n\n return wrapper;\n }\n /**\n * Creates a function like `_.invertBy`.\n *\n * @private\n * @param {Function} setter The function to set accumulator values.\n * @param {Function} toIteratee The function to resolve iteratees.\n * @returns {Function} Returns the new inverter function.\n */\n\n\n function createInverter(setter, toIteratee) {\n return function (object, iteratee) {\n return baseInverter(object, setter, toIteratee(iteratee), {});\n };\n }\n /**\n * Creates a function that performs a mathematical operation on two values.\n *\n * @private\n * @param {Function} operator The function to perform the operation.\n * @param {number} [defaultValue] The value used for `undefined` arguments.\n * @returns {Function} Returns the new mathematical operation function.\n */\n\n\n function createMathOperation(operator, defaultValue) {\n return function (value, other) {\n var result;\n\n if (value === undefined && other === undefined) {\n return defaultValue;\n }\n\n if (value !== undefined) {\n result = value;\n }\n\n if (other !== undefined) {\n if (result === undefined) {\n return other;\n }\n\n if (typeof value == 'string' || typeof other == 'string') {\n value = baseToString(value);\n other = baseToString(other);\n } else {\n value = baseToNumber(value);\n other = baseToNumber(other);\n }\n\n result = operator(value, other);\n }\n\n return result;\n };\n }\n /**\n * Creates a function like `_.over`.\n *\n * @private\n * @param {Function} arrayFunc The function to iterate over iteratees.\n * @returns {Function} Returns the new over function.\n */\n\n\n function createOver(arrayFunc) {\n return flatRest(function (iteratees) {\n iteratees = arrayMap(iteratees, baseUnary(getIteratee()));\n return baseRest(function (args) {\n var thisArg = this;\n return arrayFunc(iteratees, function (iteratee) {\n return apply(iteratee, thisArg, args);\n });\n });\n });\n }\n /**\n * Creates the padding for `string` based on `length`. The `chars` string\n * is truncated if the number of characters exceeds `length`.\n *\n * @private\n * @param {number} length The padding length.\n * @param {string} [chars=' '] The string used as padding.\n * @returns {string} Returns the padding for `string`.\n */\n\n\n function createPadding(length, chars) {\n chars = chars === undefined ? ' ' : baseToString(chars);\n var charsLength = chars.length;\n\n if (charsLength < 2) {\n return charsLength ? baseRepeat(chars, length) : chars;\n }\n\n var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));\n return hasUnicode(chars) ? castSlice(stringToArray(result), 0, length).join('') : result.slice(0, length);\n }\n /**\n * Creates a function that wraps `func` to invoke it with the `this` binding\n * of `thisArg` and `partials` prepended to the arguments it receives.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {*} thisArg The `this` binding of `func`.\n * @param {Array} partials The arguments to prepend to those provided to\n * the new function.\n * @returns {Function} Returns the new wrapped function.\n */\n\n\n function createPartial(func, bitmask, thisArg, partials) {\n var isBind = bitmask & WRAP_BIND_FLAG,\n Ctor = createCtor(func);\n\n function wrapper() {\n var argsIndex = -1,\n argsLength = arguments.length,\n leftIndex = -1,\n leftLength = partials.length,\n args = Array(leftLength + argsLength),\n fn = this && this !== root && this instanceof wrapper ? Ctor : func;\n\n while (++leftIndex < leftLength) {\n args[leftIndex] = partials[leftIndex];\n }\n\n while (argsLength--) {\n args[leftIndex++] = arguments[++argsIndex];\n }\n\n return apply(fn, isBind ? thisArg : this, args);\n }\n\n return wrapper;\n }\n /**\n * Creates a `_.range` or `_.rangeRight` function.\n *\n * @private\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new range function.\n */\n\n\n function createRange(fromRight) {\n return function (start, end, step) {\n if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {\n end = step = undefined;\n } // Ensure the sign of `-0` is preserved.\n\n\n start = toFinite(start);\n\n if (end === undefined) {\n end = start;\n start = 0;\n } else {\n end = toFinite(end);\n }\n\n step = step === undefined ? start < end ? 1 : -1 : toFinite(step);\n return baseRange(start, end, step, fromRight);\n };\n }\n /**\n * Creates a function that performs a relational operation on two values.\n *\n * @private\n * @param {Function} operator The function to perform the operation.\n * @returns {Function} Returns the new relational operation function.\n */\n\n\n function createRelationalOperation(operator) {\n return function (value, other) {\n if (!(typeof value == 'string' && typeof other == 'string')) {\n value = toNumber(value);\n other = toNumber(other);\n }\n\n return operator(value, other);\n };\n }\n /**\n * Creates a function that wraps `func` to continue currying.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {Function} wrapFunc The function to create the `func` wrapper.\n * @param {*} placeholder The placeholder value.\n * @param {*} [thisArg] The `this` binding of `func`.\n * @param {Array} [partials] The arguments to prepend to those provided to\n * the new function.\n * @param {Array} [holders] The `partials` placeholder indexes.\n * @param {Array} [argPos] The argument positions of the new function.\n * @param {number} [ary] The arity cap of `func`.\n * @param {number} [arity] The arity of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n\n\n function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {\n var isCurry = bitmask & WRAP_CURRY_FLAG,\n newHolders = isCurry ? holders : undefined,\n newHoldersRight = isCurry ? undefined : holders,\n newPartials = isCurry ? partials : undefined,\n newPartialsRight = isCurry ? undefined : partials;\n bitmask |= isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG;\n bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);\n\n if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {\n bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);\n }\n\n var newData = [func, bitmask, thisArg, newPartials, newHolders, newPartialsRight, newHoldersRight, argPos, ary, arity];\n var result = wrapFunc.apply(undefined, newData);\n\n if (isLaziable(func)) {\n setData(result, newData);\n }\n\n result.placeholder = placeholder;\n return setWrapToString(result, func, bitmask);\n }\n /**\n * Creates a function like `_.round`.\n *\n * @private\n * @param {string} methodName The name of the `Math` method to use when rounding.\n * @returns {Function} Returns the new round function.\n */\n\n\n function createRound(methodName) {\n var func = Math[methodName];\n return function (number, precision) {\n number = toNumber(number);\n precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);\n\n if (precision && nativeIsFinite(number)) {\n // Shift with exponential notation to avoid floating-point issues.\n // See [MDN](https://mdn.io/round#Examples) for more details.\n var pair = (toString(number) + 'e').split('e'),\n value = func(pair[0] + 'e' + (+pair[1] + precision));\n pair = (toString(value) + 'e').split('e');\n return +(pair[0] + 'e' + (+pair[1] - precision));\n }\n\n return func(number);\n };\n }\n /**\n * Creates a set object of `values`.\n *\n * @private\n * @param {Array} values The values to add to the set.\n * @returns {Object} Returns the new set.\n */\n\n\n var createSet = !(Set && 1 / setToArray(new Set([, -0]))[1] == INFINITY) ? noop : function (values) {\n return new Set(values);\n };\n /**\n * Creates a `_.toPairs` or `_.toPairsIn` function.\n *\n * @private\n * @param {Function} keysFunc The function to get the keys of a given object.\n * @returns {Function} Returns the new pairs function.\n */\n\n function createToPairs(keysFunc) {\n return function (object) {\n var tag = getTag(object);\n\n if (tag == mapTag) {\n return mapToArray(object);\n }\n\n if (tag == setTag) {\n return setToPairs(object);\n }\n\n return baseToPairs(object, keysFunc(object));\n };\n }\n /**\n * Creates a function that either curries or invokes `func` with optional\n * `this` binding and partially applied arguments.\n *\n * @private\n * @param {Function|string} func The function or method name to wrap.\n * @param {number} bitmask The bitmask flags.\n * 1 - `_.bind`\n * 2 - `_.bindKey`\n * 4 - `_.curry` or `_.curryRight` of a bound function\n * 8 - `_.curry`\n * 16 - `_.curryRight`\n * 32 - `_.partial`\n * 64 - `_.partialRight`\n * 128 - `_.rearg`\n * 256 - `_.ary`\n * 512 - `_.flip`\n * @param {*} [thisArg] The `this` binding of `func`.\n * @param {Array} [partials] The arguments to be partially applied.\n * @param {Array} [holders] The `partials` placeholder indexes.\n * @param {Array} [argPos] The argument positions of the new function.\n * @param {number} [ary] The arity cap of `func`.\n * @param {number} [arity] The arity of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n\n\n function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {\n var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;\n\n if (!isBindKey && typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n\n var length = partials ? partials.length : 0;\n\n if (!length) {\n bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);\n partials = holders = undefined;\n }\n\n ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);\n arity = arity === undefined ? arity : toInteger(arity);\n length -= holders ? holders.length : 0;\n\n if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {\n var partialsRight = partials,\n holdersRight = holders;\n partials = holders = undefined;\n }\n\n var data = isBindKey ? undefined : getData(func);\n var newData = [func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity];\n\n if (data) {\n mergeData(newData, data);\n }\n\n func = newData[0];\n bitmask = newData[1];\n thisArg = newData[2];\n partials = newData[3];\n holders = newData[4];\n arity = newData[9] = newData[9] === undefined ? isBindKey ? 0 : func.length : nativeMax(newData[9] - length, 0);\n\n if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {\n bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);\n }\n\n if (!bitmask || bitmask == WRAP_BIND_FLAG) {\n var result = createBind(func, bitmask, thisArg);\n } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {\n result = createCurry(func, bitmask, arity);\n } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {\n result = createPartial(func, bitmask, thisArg, partials);\n } else {\n result = createHybrid.apply(undefined, newData);\n }\n\n var setter = data ? baseSetData : setData;\n return setWrapToString(setter(result, newData), func, bitmask);\n }\n /**\n * Used by `_.defaults` to customize its `_.assignIn` use to assign properties\n * of source objects to the destination object for all destination properties\n * that resolve to `undefined`.\n *\n * @private\n * @param {*} objValue The destination value.\n * @param {*} srcValue The source value.\n * @param {string} key The key of the property to assign.\n * @param {Object} object The parent object of `objValue`.\n * @returns {*} Returns the value to assign.\n */\n\n\n function customDefaultsAssignIn(objValue, srcValue, key, object) {\n if (objValue === undefined || eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key)) {\n return srcValue;\n }\n\n return objValue;\n }\n /**\n * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source\n * objects into destination objects that are passed thru.\n *\n * @private\n * @param {*} objValue The destination value.\n * @param {*} srcValue The source value.\n * @param {string} key The key of the property to merge.\n * @param {Object} object The parent object of `objValue`.\n * @param {Object} source The parent object of `srcValue`.\n * @param {Object} [stack] Tracks traversed source values and their merged\n * counterparts.\n * @returns {*} Returns the value to assign.\n */\n\n\n function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {\n if (isObject(objValue) && isObject(srcValue)) {\n // Recursively merge objects and arrays (susceptible to call stack limits).\n stack.set(srcValue, objValue);\n baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);\n stack['delete'](srcValue);\n }\n\n return objValue;\n }\n /**\n * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain\n * objects.\n *\n * @private\n * @param {*} value The value to inspect.\n * @param {string} key The key of the property to inspect.\n * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.\n */\n\n\n function customOmitClone(value) {\n return isPlainObject(value) ? undefined : value;\n }\n /**\n * A specialized version of `baseIsEqualDeep` for arrays with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Array} array The array to compare.\n * @param {Array} other The other array to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `array` and `other` objects.\n * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.\n */\n\n\n function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n arrLength = array.length,\n othLength = other.length;\n\n if (arrLength != othLength && !(isPartial && othLength > arrLength)) {\n return false;\n } // Check that cyclic values are equal.\n\n\n var arrStacked = stack.get(array);\n var othStacked = stack.get(other);\n\n if (arrStacked && othStacked) {\n return arrStacked == other && othStacked == array;\n }\n\n var index = -1,\n result = true,\n seen = bitmask & COMPARE_UNORDERED_FLAG ? new SetCache() : undefined;\n stack.set(array, other);\n stack.set(other, array); // Ignore non-index properties.\n\n while (++index < arrLength) {\n var arrValue = array[index],\n othValue = other[index];\n\n if (customizer) {\n var compared = isPartial ? customizer(othValue, arrValue, index, other, array, stack) : customizer(arrValue, othValue, index, array, other, stack);\n }\n\n if (compared !== undefined) {\n if (compared) {\n continue;\n }\n\n result = false;\n break;\n } // Recursively compare arrays (susceptible to call stack limits).\n\n\n if (seen) {\n if (!arraySome(other, function (othValue, othIndex) {\n if (!cacheHas(seen, othIndex) && (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {\n return seen.push(othIndex);\n }\n })) {\n result = false;\n break;\n }\n } else if (!(arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {\n result = false;\n break;\n }\n }\n\n stack['delete'](array);\n stack['delete'](other);\n return result;\n }\n /**\n * A specialized version of `baseIsEqualDeep` for comparing objects of\n * the same `toStringTag`.\n *\n * **Note:** This function only supports comparing values with tags of\n * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {string} tag The `toStringTag` of the objects to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\n\n\n function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {\n switch (tag) {\n case dataViewTag:\n if (object.byteLength != other.byteLength || object.byteOffset != other.byteOffset) {\n return false;\n }\n\n object = object.buffer;\n other = other.buffer;\n\n case arrayBufferTag:\n if (object.byteLength != other.byteLength || !equalFunc(new Uint8Array(object), new Uint8Array(other))) {\n return false;\n }\n\n return true;\n\n case boolTag:\n case dateTag:\n case numberTag:\n // Coerce booleans to `1` or `0` and dates to milliseconds.\n // Invalid dates are coerced to `NaN`.\n return eq(+object, +other);\n\n case errorTag:\n return object.name == other.name && object.message == other.message;\n\n case regexpTag:\n case stringTag:\n // Coerce regexes to strings and treat strings, primitives and objects,\n // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring\n // for more details.\n return object == other + '';\n\n case mapTag:\n var convert = mapToArray;\n\n case setTag:\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG;\n convert || (convert = setToArray);\n\n if (object.size != other.size && !isPartial) {\n return false;\n } // Assume cyclic values are equal.\n\n\n var stacked = stack.get(object);\n\n if (stacked) {\n return stacked == other;\n }\n\n bitmask |= COMPARE_UNORDERED_FLAG; // Recursively compare objects (susceptible to call stack limits).\n\n stack.set(object, other);\n var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);\n stack['delete'](object);\n return result;\n\n case symbolTag:\n if (symbolValueOf) {\n return symbolValueOf.call(object) == symbolValueOf.call(other);\n }\n\n }\n\n return false;\n }\n /**\n * A specialized version of `baseIsEqualDeep` for objects with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\n\n\n function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n objProps = getAllKeys(object),\n objLength = objProps.length,\n othProps = getAllKeys(other),\n othLength = othProps.length;\n\n if (objLength != othLength && !isPartial) {\n return false;\n }\n\n var index = objLength;\n\n while (index--) {\n var key = objProps[index];\n\n if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {\n return false;\n }\n } // Check that cyclic values are equal.\n\n\n var objStacked = stack.get(object);\n var othStacked = stack.get(other);\n\n if (objStacked && othStacked) {\n return objStacked == other && othStacked == object;\n }\n\n var result = true;\n stack.set(object, other);\n stack.set(other, object);\n var skipCtor = isPartial;\n\n while (++index < objLength) {\n key = objProps[index];\n var objValue = object[key],\n othValue = other[key];\n\n if (customizer) {\n var compared = isPartial ? customizer(othValue, objValue, key, other, object, stack) : customizer(objValue, othValue, key, object, other, stack);\n } // Recursively compare objects (susceptible to call stack limits).\n\n\n if (!(compared === undefined ? objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack) : compared)) {\n result = false;\n break;\n }\n\n skipCtor || (skipCtor = key == 'constructor');\n }\n\n if (result && !skipCtor) {\n var objCtor = object.constructor,\n othCtor = other.constructor; // Non `Object` object instances with different constructors are not equal.\n\n if (objCtor != othCtor && 'constructor' in object && 'constructor' in other && !(typeof objCtor == 'function' && objCtor instanceof objCtor && typeof othCtor == 'function' && othCtor instanceof othCtor)) {\n result = false;\n }\n }\n\n stack['delete'](object);\n stack['delete'](other);\n return result;\n }\n /**\n * A specialized version of `baseRest` which flattens the rest array.\n *\n * @private\n * @param {Function} func The function to apply a rest parameter to.\n * @returns {Function} Returns the new function.\n */\n\n\n function flatRest(func) {\n return setToString(overRest(func, undefined, flatten), func + '');\n }\n /**\n * Creates an array of own enumerable property names and symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names and symbols.\n */\n\n\n function getAllKeys(object) {\n return baseGetAllKeys(object, keys, getSymbols);\n }\n /**\n * Creates an array of own and inherited enumerable property names and\n * symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names and symbols.\n */\n\n\n function getAllKeysIn(object) {\n return baseGetAllKeys(object, keysIn, getSymbolsIn);\n }\n /**\n * Gets metadata for `func`.\n *\n * @private\n * @param {Function} func The function to query.\n * @returns {*} Returns the metadata for `func`.\n */\n\n\n var getData = !metaMap ? noop : function (func) {\n return metaMap.get(func);\n };\n /**\n * Gets the name of `func`.\n *\n * @private\n * @param {Function} func The function to query.\n * @returns {string} Returns the function name.\n */\n\n function getFuncName(func) {\n var result = func.name + '',\n array = realNames[result],\n length = hasOwnProperty.call(realNames, result) ? array.length : 0;\n\n while (length--) {\n var data = array[length],\n otherFunc = data.func;\n\n if (otherFunc == null || otherFunc == func) {\n return data.name;\n }\n }\n\n return result;\n }\n /**\n * Gets the argument placeholder value for `func`.\n *\n * @private\n * @param {Function} func The function to inspect.\n * @returns {*} Returns the placeholder value.\n */\n\n\n function getHolder(func) {\n var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func;\n return object.placeholder;\n }\n /**\n * Gets the appropriate \"iteratee\" function. If `_.iteratee` is customized,\n * this function returns the custom method, otherwise it returns `baseIteratee`.\n * If arguments are provided, the chosen function is invoked with them and\n * its result is returned.\n *\n * @private\n * @param {*} [value] The value to convert to an iteratee.\n * @param {number} [arity] The arity of the created iteratee.\n * @returns {Function} Returns the chosen function or its result.\n */\n\n\n function getIteratee() {\n var result = lodash.iteratee || iteratee;\n result = result === iteratee ? baseIteratee : result;\n return arguments.length ? result(arguments[0], arguments[1]) : result;\n }\n /**\n * Gets the data for `map`.\n *\n * @private\n * @param {Object} map The map to query.\n * @param {string} key The reference key.\n * @returns {*} Returns the map data.\n */\n\n\n function getMapData(map, key) {\n var data = map.__data__;\n return isKeyable(key) ? data[typeof key == 'string' ? 'string' : 'hash'] : data.map;\n }\n /**\n * Gets the property names, values, and compare flags of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the match data of `object`.\n */\n\n\n function getMatchData(object) {\n var result = keys(object),\n length = result.length;\n\n while (length--) {\n var key = result[length],\n value = object[key];\n result[length] = [key, value, isStrictComparable(value)];\n }\n\n return result;\n }\n /**\n * Gets the native function at `key` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {string} key The key of the method to get.\n * @returns {*} Returns the function if it's native, else `undefined`.\n */\n\n\n function getNative(object, key) {\n var value = getValue(object, key);\n return baseIsNative(value) ? value : undefined;\n }\n /**\n * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the raw `toStringTag`.\n */\n\n\n function getRawTag(value) {\n var isOwn = hasOwnProperty.call(value, symToStringTag),\n tag = value[symToStringTag];\n\n try {\n value[symToStringTag] = undefined;\n var unmasked = true;\n } catch (e) {}\n\n var result = nativeObjectToString.call(value);\n\n if (unmasked) {\n if (isOwn) {\n value[symToStringTag] = tag;\n } else {\n delete value[symToStringTag];\n }\n }\n\n return result;\n }\n /**\n * Creates an array of the own enumerable symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of symbols.\n */\n\n\n var getSymbols = !nativeGetSymbols ? stubArray : function (object) {\n if (object == null) {\n return [];\n }\n\n object = Object(object);\n return arrayFilter(nativeGetSymbols(object), function (symbol) {\n return propertyIsEnumerable.call(object, symbol);\n });\n };\n /**\n * Creates an array of the own and inherited enumerable symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of symbols.\n */\n\n var getSymbolsIn = !nativeGetSymbols ? stubArray : function (object) {\n var result = [];\n\n while (object) {\n arrayPush(result, getSymbols(object));\n object = getPrototype(object);\n }\n\n return result;\n };\n /**\n * Gets the `toStringTag` of `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\n\n var getTag = baseGetTag; // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.\n\n if (DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag || Map && getTag(new Map()) != mapTag || Promise && getTag(Promise.resolve()) != promiseTag || Set && getTag(new Set()) != setTag || WeakMap && getTag(new WeakMap()) != weakMapTag) {\n getTag = function getTag(value) {\n var result = baseGetTag(value),\n Ctor = result == objectTag ? value.constructor : undefined,\n ctorString = Ctor ? toSource(Ctor) : '';\n\n if (ctorString) {\n switch (ctorString) {\n case dataViewCtorString:\n return dataViewTag;\n\n case mapCtorString:\n return mapTag;\n\n case promiseCtorString:\n return promiseTag;\n\n case setCtorString:\n return setTag;\n\n case weakMapCtorString:\n return weakMapTag;\n }\n }\n\n return result;\n };\n }\n /**\n * Gets the view, applying any `transforms` to the `start` and `end` positions.\n *\n * @private\n * @param {number} start The start of the view.\n * @param {number} end The end of the view.\n * @param {Array} transforms The transformations to apply to the view.\n * @returns {Object} Returns an object containing the `start` and `end`\n * positions of the view.\n */\n\n\n function getView(start, end, transforms) {\n var index = -1,\n length = transforms.length;\n\n while (++index < length) {\n var data = transforms[index],\n size = data.size;\n\n switch (data.type) {\n case 'drop':\n start += size;\n break;\n\n case 'dropRight':\n end -= size;\n break;\n\n case 'take':\n end = nativeMin(end, start + size);\n break;\n\n case 'takeRight':\n start = nativeMax(start, end - size);\n break;\n }\n }\n\n return {\n 'start': start,\n 'end': end\n };\n }\n /**\n * Extracts wrapper details from the `source` body comment.\n *\n * @private\n * @param {string} source The source to inspect.\n * @returns {Array} Returns the wrapper details.\n */\n\n\n function getWrapDetails(source) {\n var match = source.match(reWrapDetails);\n return match ? match[1].split(reSplitDetails) : [];\n }\n /**\n * Checks if `path` exists on `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @param {Function} hasFunc The function to check properties.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n */\n\n\n function hasPath(object, path, hasFunc) {\n path = castPath(path, object);\n var index = -1,\n length = path.length,\n result = false;\n\n while (++index < length) {\n var key = toKey(path[index]);\n\n if (!(result = object != null && hasFunc(object, key))) {\n break;\n }\n\n object = object[key];\n }\n\n if (result || ++index != length) {\n return result;\n }\n\n length = object == null ? 0 : object.length;\n return !!length && isLength(length) && isIndex(key, length) && (isArray(object) || isArguments(object));\n }\n /**\n * Initializes an array clone.\n *\n * @private\n * @param {Array} array The array to clone.\n * @returns {Array} Returns the initialized clone.\n */\n\n\n function initCloneArray(array) {\n var length = array.length,\n result = new array.constructor(length); // Add properties assigned by `RegExp#exec`.\n\n if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {\n result.index = array.index;\n result.input = array.input;\n }\n\n return result;\n }\n /**\n * Initializes an object clone.\n *\n * @private\n * @param {Object} object The object to clone.\n * @returns {Object} Returns the initialized clone.\n */\n\n\n function initCloneObject(object) {\n return typeof object.constructor == 'function' && !isPrototype(object) ? baseCreate(getPrototype(object)) : {};\n }\n /**\n * Initializes an object clone based on its `toStringTag`.\n *\n * **Note:** This function only supports cloning values with tags of\n * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.\n *\n * @private\n * @param {Object} object The object to clone.\n * @param {string} tag The `toStringTag` of the object to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the initialized clone.\n */\n\n\n function initCloneByTag(object, tag, isDeep) {\n var Ctor = object.constructor;\n\n switch (tag) {\n case arrayBufferTag:\n return cloneArrayBuffer(object);\n\n case boolTag:\n case dateTag:\n return new Ctor(+object);\n\n case dataViewTag:\n return cloneDataView(object, isDeep);\n\n case float32Tag:\n case float64Tag:\n case int8Tag:\n case int16Tag:\n case int32Tag:\n case uint8Tag:\n case uint8ClampedTag:\n case uint16Tag:\n case uint32Tag:\n return cloneTypedArray(object, isDeep);\n\n case mapTag:\n return new Ctor();\n\n case numberTag:\n case stringTag:\n return new Ctor(object);\n\n case regexpTag:\n return cloneRegExp(object);\n\n case setTag:\n return new Ctor();\n\n case symbolTag:\n return cloneSymbol(object);\n }\n }\n /**\n * Inserts wrapper `details` in a comment at the top of the `source` body.\n *\n * @private\n * @param {string} source The source to modify.\n * @returns {Array} details The details to insert.\n * @returns {string} Returns the modified source.\n */\n\n\n function insertWrapDetails(source, details) {\n var length = details.length;\n\n if (!length) {\n return source;\n }\n\n var lastIndex = length - 1;\n details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];\n details = details.join(length > 2 ? ', ' : ' ');\n return source.replace(reWrapComment, '{\\n/* [wrapped with ' + details + '] */\\n');\n }\n /**\n * Checks if `value` is a flattenable `arguments` object or array.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.\n */\n\n\n function isFlattenable(value) {\n return isArray(value) || isArguments(value) || !!(spreadableSymbol && value && value[spreadableSymbol]);\n }\n /**\n * Checks if `value` is a valid array-like index.\n *\n * @private\n * @param {*} value The value to check.\n * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.\n * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.\n */\n\n\n function isIndex(value, length) {\n var type = _typeof(value);\n\n length = length == null ? MAX_SAFE_INTEGER : length;\n return !!length && (type == 'number' || type != 'symbol' && reIsUint.test(value)) && value > -1 && value % 1 == 0 && value < length;\n }\n /**\n * Checks if the given arguments are from an iteratee call.\n *\n * @private\n * @param {*} value The potential iteratee value argument.\n * @param {*} index The potential iteratee index or key argument.\n * @param {*} object The potential iteratee object argument.\n * @returns {boolean} Returns `true` if the arguments are from an iteratee call,\n * else `false`.\n */\n\n\n function isIterateeCall(value, index, object) {\n if (!isObject(object)) {\n return false;\n }\n\n var type = _typeof(index);\n\n if (type == 'number' ? isArrayLike(object) && isIndex(index, object.length) : type == 'string' && index in object) {\n return eq(object[index], value);\n }\n\n return false;\n }\n /**\n * Checks if `value` is a property name and not a property path.\n *\n * @private\n * @param {*} value The value to check.\n * @param {Object} [object] The object to query keys on.\n * @returns {boolean} Returns `true` if `value` is a property name, else `false`.\n */\n\n\n function isKey(value, object) {\n if (isArray(value)) {\n return false;\n }\n\n var type = _typeof(value);\n\n if (type == 'number' || type == 'symbol' || type == 'boolean' || value == null || isSymbol(value)) {\n return true;\n }\n\n return reIsPlainProp.test(value) || !reIsDeepProp.test(value) || object != null && value in Object(object);\n }\n /**\n * Checks if `value` is suitable for use as unique object key.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is suitable, else `false`.\n */\n\n\n function isKeyable(value) {\n var type = _typeof(value);\n\n return type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean' ? value !== '__proto__' : value === null;\n }\n /**\n * Checks if `func` has a lazy counterpart.\n *\n * @private\n * @param {Function} func The function to check.\n * @returns {boolean} Returns `true` if `func` has a lazy counterpart,\n * else `false`.\n */\n\n\n function isLaziable(func) {\n var funcName = getFuncName(func),\n other = lodash[funcName];\n\n if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {\n return false;\n }\n\n if (func === other) {\n return true;\n }\n\n var data = getData(other);\n return !!data && func === data[0];\n }\n /**\n * Checks if `func` has its source masked.\n *\n * @private\n * @param {Function} func The function to check.\n * @returns {boolean} Returns `true` if `func` is masked, else `false`.\n */\n\n\n function isMasked(func) {\n return !!maskSrcKey && maskSrcKey in func;\n }\n /**\n * Checks if `func` is capable of being masked.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `func` is maskable, else `false`.\n */\n\n\n var isMaskable = coreJsData ? isFunction : stubFalse;\n /**\n * Checks if `value` is likely a prototype object.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.\n */\n\n function isPrototype(value) {\n var Ctor = value && value.constructor,\n proto = typeof Ctor == 'function' && Ctor.prototype || objectProto;\n return value === proto;\n }\n /**\n * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` if suitable for strict\n * equality comparisons, else `false`.\n */\n\n\n function isStrictComparable(value) {\n return value === value && !isObject(value);\n }\n /**\n * A specialized version of `matchesProperty` for source values suitable\n * for strict equality comparisons, i.e. `===`.\n *\n * @private\n * @param {string} key The key of the property to get.\n * @param {*} srcValue The value to match.\n * @returns {Function} Returns the new spec function.\n */\n\n\n function matchesStrictComparable(key, srcValue) {\n return function (object) {\n if (object == null) {\n return false;\n }\n\n return object[key] === srcValue && (srcValue !== undefined || key in Object(object));\n };\n }\n /**\n * A specialized version of `_.memoize` which clears the memoized function's\n * cache when it exceeds `MAX_MEMOIZE_SIZE`.\n *\n * @private\n * @param {Function} func The function to have its output memoized.\n * @returns {Function} Returns the new memoized function.\n */\n\n\n function memoizeCapped(func) {\n var result = memoize(func, function (key) {\n if (cache.size === MAX_MEMOIZE_SIZE) {\n cache.clear();\n }\n\n return key;\n });\n var cache = result.cache;\n return result;\n }\n /**\n * Merges the function metadata of `source` into `data`.\n *\n * Merging metadata reduces the number of wrappers used to invoke a function.\n * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`\n * may be applied regardless of execution order. Methods like `_.ary` and\n * `_.rearg` modify function arguments, making the order in which they are\n * executed important, preventing the merging of metadata. However, we make\n * an exception for a safe combined case where curried functions have `_.ary`\n * and or `_.rearg` applied.\n *\n * @private\n * @param {Array} data The destination metadata.\n * @param {Array} source The source metadata.\n * @returns {Array} Returns `data`.\n */\n\n\n function mergeData(data, source) {\n var bitmask = data[1],\n srcBitmask = source[1],\n newBitmask = bitmask | srcBitmask,\n isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);\n var isCombo = srcBitmask == WRAP_ARY_FLAG && bitmask == WRAP_CURRY_FLAG || srcBitmask == WRAP_ARY_FLAG && bitmask == WRAP_REARG_FLAG && data[7].length <= source[8] || srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG) && source[7].length <= source[8] && bitmask == WRAP_CURRY_FLAG; // Exit early if metadata can't be merged.\n\n if (!(isCommon || isCombo)) {\n return data;\n } // Use source `thisArg` if available.\n\n\n if (srcBitmask & WRAP_BIND_FLAG) {\n data[2] = source[2]; // Set when currying a bound function.\n\n newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;\n } // Compose partial arguments.\n\n\n var value = source[3];\n\n if (value) {\n var partials = data[3];\n data[3] = partials ? composeArgs(partials, value, source[4]) : value;\n data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4];\n } // Compose partial right arguments.\n\n\n value = source[5];\n\n if (value) {\n partials = data[5];\n data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;\n data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6];\n } // Use source `argPos` if available.\n\n\n value = source[7];\n\n if (value) {\n data[7] = value;\n } // Use source `ary` if it's smaller.\n\n\n if (srcBitmask & WRAP_ARY_FLAG) {\n data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);\n } // Use source `arity` if one is not provided.\n\n\n if (data[9] == null) {\n data[9] = source[9];\n } // Use source `func` and merge bitmasks.\n\n\n data[0] = source[0];\n data[1] = newBitmask;\n return data;\n }\n /**\n * This function is like\n * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n * except that it includes inherited enumerable properties.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\n\n\n function nativeKeysIn(object) {\n var result = [];\n\n if (object != null) {\n for (var key in Object(object)) {\n result.push(key);\n }\n }\n\n return result;\n }\n /**\n * Converts `value` to a string using `Object.prototype.toString`.\n *\n * @private\n * @param {*} value The value to convert.\n * @returns {string} Returns the converted string.\n */\n\n\n function objectToString(value) {\n return nativeObjectToString.call(value);\n }\n /**\n * A specialized version of `baseRest` which transforms the rest array.\n *\n * @private\n * @param {Function} func The function to apply a rest parameter to.\n * @param {number} [start=func.length-1] The start position of the rest parameter.\n * @param {Function} transform The rest array transform.\n * @returns {Function} Returns the new function.\n */\n\n\n function overRest(func, start, transform) {\n start = nativeMax(start === undefined ? func.length - 1 : start, 0);\n return function () {\n var args = arguments,\n index = -1,\n length = nativeMax(args.length - start, 0),\n array = Array(length);\n\n while (++index < length) {\n array[index] = args[start + index];\n }\n\n index = -1;\n var otherArgs = Array(start + 1);\n\n while (++index < start) {\n otherArgs[index] = args[index];\n }\n\n otherArgs[start] = transform(array);\n return apply(func, this, otherArgs);\n };\n }\n /**\n * Gets the parent value at `path` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} path The path to get the parent value of.\n * @returns {*} Returns the parent value.\n */\n\n\n function parent(object, path) {\n return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));\n }\n /**\n * Reorder `array` according to the specified indexes where the element at\n * the first index is assigned as the first element, the element at\n * the second index is assigned as the second element, and so on.\n *\n * @private\n * @param {Array} array The array to reorder.\n * @param {Array} indexes The arranged array indexes.\n * @returns {Array} Returns `array`.\n */\n\n\n function reorder(array, indexes) {\n var arrLength = array.length,\n length = nativeMin(indexes.length, arrLength),\n oldArray = copyArray(array);\n\n while (length--) {\n var index = indexes[length];\n array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;\n }\n\n return array;\n }\n /**\n * Gets the value at `key`, unless `key` is \"__proto__\" or \"constructor\".\n *\n * @private\n * @param {Object} object The object to query.\n * @param {string} key The key of the property to get.\n * @returns {*} Returns the property value.\n */\n\n\n function safeGet(object, key) {\n if (key === 'constructor' && typeof object[key] === 'function') {\n return;\n }\n\n if (key == '__proto__') {\n return;\n }\n\n return object[key];\n }\n /**\n * Sets metadata for `func`.\n *\n * **Note:** If this function becomes hot, i.e. is invoked a lot in a short\n * period of time, it will trip its breaker and transition to an identity\n * function to avoid garbage collection pauses in V8. See\n * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)\n * for more details.\n *\n * @private\n * @param {Function} func The function to associate metadata with.\n * @param {*} data The metadata.\n * @returns {Function} Returns `func`.\n */\n\n\n var setData = shortOut(baseSetData);\n /**\n * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout).\n *\n * @private\n * @param {Function} func The function to delay.\n * @param {number} wait The number of milliseconds to delay invocation.\n * @returns {number|Object} Returns the timer id or timeout object.\n */\n\n var setTimeout = ctxSetTimeout || function (func, wait) {\n return root.setTimeout(func, wait);\n };\n /**\n * Sets the `toString` method of `func` to return `string`.\n *\n * @private\n * @param {Function} func The function to modify.\n * @param {Function} string The `toString` result.\n * @returns {Function} Returns `func`.\n */\n\n\n var setToString = shortOut(baseSetToString);\n /**\n * Sets the `toString` method of `wrapper` to mimic the source of `reference`\n * with wrapper details in a comment at the top of the source body.\n *\n * @private\n * @param {Function} wrapper The function to modify.\n * @param {Function} reference The reference function.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @returns {Function} Returns `wrapper`.\n */\n\n function setWrapToString(wrapper, reference, bitmask) {\n var source = reference + '';\n return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));\n }\n /**\n * Creates a function that'll short out and invoke `identity` instead\n * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`\n * milliseconds.\n *\n * @private\n * @param {Function} func The function to restrict.\n * @returns {Function} Returns the new shortable function.\n */\n\n\n function shortOut(func) {\n var count = 0,\n lastCalled = 0;\n return function () {\n var stamp = nativeNow(),\n remaining = HOT_SPAN - (stamp - lastCalled);\n lastCalled = stamp;\n\n if (remaining > 0) {\n if (++count >= HOT_COUNT) {\n return arguments[0];\n }\n } else {\n count = 0;\n }\n\n return func.apply(undefined, arguments);\n };\n }\n /**\n * A specialized version of `_.shuffle` which mutates and sets the size of `array`.\n *\n * @private\n * @param {Array} array The array to shuffle.\n * @param {number} [size=array.length] The size of `array`.\n * @returns {Array} Returns `array`.\n */\n\n\n function shuffleSelf(array, size) {\n var index = -1,\n length = array.length,\n lastIndex = length - 1;\n size = size === undefined ? length : size;\n\n while (++index < size) {\n var rand = baseRandom(index, lastIndex),\n value = array[rand];\n array[rand] = array[index];\n array[index] = value;\n }\n\n array.length = size;\n return array;\n }\n /**\n * Converts `string` to a property path array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the property path array.\n */\n\n\n var stringToPath = memoizeCapped(function (string) {\n var result = [];\n\n if (string.charCodeAt(0) === 46\n /* . */\n ) {\n result.push('');\n }\n\n string.replace(rePropName, function (match, number, quote, subString) {\n result.push(quote ? subString.replace(reEscapeChar, '$1') : number || match);\n });\n return result;\n });\n /**\n * Converts `value` to a string key if it's not a string or symbol.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {string|symbol} Returns the key.\n */\n\n function toKey(value) {\n if (typeof value == 'string' || isSymbol(value)) {\n return value;\n }\n\n var result = value + '';\n return result == '0' && 1 / value == -INFINITY ? '-0' : result;\n }\n /**\n * Converts `func` to its source code.\n *\n * @private\n * @param {Function} func The function to convert.\n * @returns {string} Returns the source code.\n */\n\n\n function toSource(func) {\n if (func != null) {\n try {\n return funcToString.call(func);\n } catch (e) {}\n\n try {\n return func + '';\n } catch (e) {}\n }\n\n return '';\n }\n /**\n * Updates wrapper `details` based on `bitmask` flags.\n *\n * @private\n * @returns {Array} details The details to modify.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @returns {Array} Returns `details`.\n */\n\n\n function updateWrapDetails(details, bitmask) {\n arrayEach(wrapFlags, function (pair) {\n var value = '_.' + pair[0];\n\n if (bitmask & pair[1] && !arrayIncludes(details, value)) {\n details.push(value);\n }\n });\n return details.sort();\n }\n /**\n * Creates a clone of `wrapper`.\n *\n * @private\n * @param {Object} wrapper The wrapper to clone.\n * @returns {Object} Returns the cloned wrapper.\n */\n\n\n function wrapperClone(wrapper) {\n if (wrapper instanceof LazyWrapper) {\n return wrapper.clone();\n }\n\n var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);\n result.__actions__ = copyArray(wrapper.__actions__);\n result.__index__ = wrapper.__index__;\n result.__values__ = wrapper.__values__;\n return result;\n }\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates an array of elements split into groups the length of `size`.\n * If `array` can't be split evenly, the final chunk will be the remaining\n * elements.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to process.\n * @param {number} [size=1] The length of each chunk\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the new array of chunks.\n * @example\n *\n * _.chunk(['a', 'b', 'c', 'd'], 2);\n * // => [['a', 'b'], ['c', 'd']]\n *\n * _.chunk(['a', 'b', 'c', 'd'], 3);\n * // => [['a', 'b', 'c'], ['d']]\n */\n\n\n function chunk(array, size, guard) {\n if (guard ? isIterateeCall(array, size, guard) : size === undefined) {\n size = 1;\n } else {\n size = nativeMax(toInteger(size), 0);\n }\n\n var length = array == null ? 0 : array.length;\n\n if (!length || size < 1) {\n return [];\n }\n\n var index = 0,\n resIndex = 0,\n result = Array(nativeCeil(length / size));\n\n while (index < length) {\n result[resIndex++] = baseSlice(array, index, index += size);\n }\n\n return result;\n }\n /**\n * Creates an array with all falsey values removed. The values `false`, `null`,\n * `0`, `\"\"`, `undefined`, and `NaN` are falsey.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to compact.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.compact([0, 1, false, 2, '', 3]);\n * // => [1, 2, 3]\n */\n\n\n function compact(array) {\n var index = -1,\n length = array == null ? 0 : array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index];\n\n if (value) {\n result[resIndex++] = value;\n }\n }\n\n return result;\n }\n /**\n * Creates a new array concatenating `array` with any additional arrays\n * and/or values.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to concatenate.\n * @param {...*} [values] The values to concatenate.\n * @returns {Array} Returns the new concatenated array.\n * @example\n *\n * var array = [1];\n * var other = _.concat(array, 2, [3], [[4]]);\n *\n * console.log(other);\n * // => [1, 2, 3, [4]]\n *\n * console.log(array);\n * // => [1]\n */\n\n\n function concat() {\n var length = arguments.length;\n\n if (!length) {\n return [];\n }\n\n var args = Array(length - 1),\n array = arguments[0],\n index = length;\n\n while (index--) {\n args[index - 1] = arguments[index];\n }\n\n return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));\n }\n /**\n * Creates an array of `array` values not included in the other given arrays\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons. The order and references of result values are\n * determined by the first array.\n *\n * **Note:** Unlike `_.pullAll`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.without, _.xor\n * @example\n *\n * _.difference([2, 1], [2, 3]);\n * // => [1]\n */\n\n\n var difference = baseRest(function (array, values) {\n return isArrayLikeObject(array) ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true)) : [];\n });\n /**\n * This method is like `_.difference` except that it accepts `iteratee` which\n * is invoked for each element of `array` and `values` to generate the criterion\n * by which they're compared. The order and references of result values are\n * determined by the first array. The iteratee is invoked with one argument:\n * (value).\n *\n * **Note:** Unlike `_.pullAllBy`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n * // => [1.2]\n *\n * // The `_.property` iteratee shorthand.\n * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');\n * // => [{ 'x': 2 }]\n */\n\n var differenceBy = baseRest(function (array, values) {\n var iteratee = last(values);\n\n if (isArrayLikeObject(iteratee)) {\n iteratee = undefined;\n }\n\n return isArrayLikeObject(array) ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2)) : [];\n });\n /**\n * This method is like `_.difference` except that it accepts `comparator`\n * which is invoked to compare elements of `array` to `values`. The order and\n * references of result values are determined by the first array. The comparator\n * is invoked with two arguments: (arrVal, othVal).\n *\n * **Note:** Unlike `_.pullAllWith`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n *\n * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);\n * // => [{ 'x': 2, 'y': 1 }]\n */\n\n var differenceWith = baseRest(function (array, values) {\n var comparator = last(values);\n\n if (isArrayLikeObject(comparator)) {\n comparator = undefined;\n }\n\n return isArrayLikeObject(array) ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator) : [];\n });\n /**\n * Creates a slice of `array` with `n` elements dropped from the beginning.\n *\n * @static\n * @memberOf _\n * @since 0.5.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to drop.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.drop([1, 2, 3]);\n * // => [2, 3]\n *\n * _.drop([1, 2, 3], 2);\n * // => [3]\n *\n * _.drop([1, 2, 3], 5);\n * // => []\n *\n * _.drop([1, 2, 3], 0);\n * // => [1, 2, 3]\n */\n\n function drop(array, n, guard) {\n var length = array == null ? 0 : array.length;\n\n if (!length) {\n return [];\n }\n\n n = guard || n === undefined ? 1 : toInteger(n);\n return baseSlice(array, n < 0 ? 0 : n, length);\n }\n /**\n * Creates a slice of `array` with `n` elements dropped from the end.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to drop.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.dropRight([1, 2, 3]);\n * // => [1, 2]\n *\n * _.dropRight([1, 2, 3], 2);\n * // => [1]\n *\n * _.dropRight([1, 2, 3], 5);\n * // => []\n *\n * _.dropRight([1, 2, 3], 0);\n * // => [1, 2, 3]\n */\n\n\n function dropRight(array, n, guard) {\n var length = array == null ? 0 : array.length;\n\n if (!length) {\n return [];\n }\n\n n = guard || n === undefined ? 1 : toInteger(n);\n n = length - n;\n return baseSlice(array, 0, n < 0 ? 0 : n);\n }\n /**\n * Creates a slice of `array` excluding elements dropped from the end.\n * Elements are dropped until `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': true },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.dropRightWhile(users, function(o) { return !o.active; });\n * // => objects for ['barney']\n *\n * // The `_.matches` iteratee shorthand.\n * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });\n * // => objects for ['barney', 'fred']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.dropRightWhile(users, ['active', false]);\n * // => objects for ['barney']\n *\n * // The `_.property` iteratee shorthand.\n * _.dropRightWhile(users, 'active');\n * // => objects for ['barney', 'fred', 'pebbles']\n */\n\n\n function dropRightWhile(array, predicate) {\n return array && array.length ? baseWhile(array, getIteratee(predicate, 3), true, true) : [];\n }\n /**\n * Creates a slice of `array` excluding elements dropped from the beginning.\n * Elements are dropped until `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': false },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.dropWhile(users, function(o) { return !o.active; });\n * // => objects for ['pebbles']\n *\n * // The `_.matches` iteratee shorthand.\n * _.dropWhile(users, { 'user': 'barney', 'active': false });\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.dropWhile(users, ['active', false]);\n * // => objects for ['pebbles']\n *\n * // The `_.property` iteratee shorthand.\n * _.dropWhile(users, 'active');\n * // => objects for ['barney', 'fred', 'pebbles']\n */\n\n\n function dropWhile(array, predicate) {\n return array && array.length ? baseWhile(array, getIteratee(predicate, 3), true) : [];\n }\n /**\n * Fills elements of `array` with `value` from `start` up to, but not\n * including, `end`.\n *\n * **Note:** This method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 3.2.0\n * @category Array\n * @param {Array} array The array to fill.\n * @param {*} value The value to fill `array` with.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _.fill(array, 'a');\n * console.log(array);\n * // => ['a', 'a', 'a']\n *\n * _.fill(Array(3), 2);\n * // => [2, 2, 2]\n *\n * _.fill([4, 6, 8, 10], '*', 1, 3);\n * // => [4, '*', '*', 10]\n */\n\n\n function fill(array, value, start, end) {\n var length = array == null ? 0 : array.length;\n\n if (!length) {\n return [];\n }\n\n if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {\n start = 0;\n end = length;\n }\n\n return baseFill(array, value, start, end);\n }\n /**\n * This method is like `_.find` except that it returns the index 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 Array\n * @param {Array} array The array to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param {number} [fromIndex=0] The index to search from.\n * @returns {number} Returns the index of the found element, else `-1`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': false },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.findIndex(users, function(o) { return o.user == 'barney'; });\n * // => 0\n *\n * // The `_.matches` iteratee shorthand.\n * _.findIndex(users, { 'user': 'fred', 'active': false });\n * // => 1\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findIndex(users, ['active', false]);\n * // => 0\n *\n * // The `_.property` iteratee shorthand.\n * _.findIndex(users, 'active');\n * // => 2\n */\n\n\n function findIndex(array, predicate, fromIndex) {\n var length = array == null ? 0 : array.length;\n\n if (!length) {\n return -1;\n }\n\n var index = fromIndex == null ? 0 : toInteger(fromIndex);\n\n if (index < 0) {\n index = nativeMax(length + index, 0);\n }\n\n return baseFindIndex(array, getIteratee(predicate, 3), index);\n }\n /**\n * This method is like `_.findIndex` except that it iterates over elements\n * of `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param {number} [fromIndex=array.length-1] The index to search from.\n * @returns {number} Returns the index of the found element, else `-1`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': true },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });\n * // => 2\n *\n * // The `_.matches` iteratee shorthand.\n * _.findLastIndex(users, { 'user': 'barney', 'active': true });\n * // => 0\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findLastIndex(users, ['active', false]);\n * // => 2\n *\n * // The `_.property` iteratee shorthand.\n * _.findLastIndex(users, 'active');\n * // => 0\n */\n\n\n function findLastIndex(array, predicate, fromIndex) {\n var length = array == null ? 0 : array.length;\n\n if (!length) {\n return -1;\n }\n\n var index = length - 1;\n\n if (fromIndex !== undefined) {\n index = toInteger(fromIndex);\n index = fromIndex < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);\n }\n\n return baseFindIndex(array, getIteratee(predicate, 3), index, true);\n }\n /**\n * Flattens `array` a single level deep.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * _.flatten([1, [2, [3, [4]], 5]]);\n * // => [1, 2, [3, [4]], 5]\n */\n\n\n function flatten(array) {\n var length = array == null ? 0 : array.length;\n return length ? baseFlatten(array, 1) : [];\n }\n /**\n * Recursively flattens `array`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * _.flattenDeep([1, [2, [3, [4]], 5]]);\n * // => [1, 2, 3, 4, 5]\n */\n\n\n function flattenDeep(array) {\n var length = array == null ? 0 : array.length;\n return length ? baseFlatten(array, INFINITY) : [];\n }\n /**\n * Recursively flatten `array` up to `depth` times.\n *\n * @static\n * @memberOf _\n * @since 4.4.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @param {number} [depth=1] The maximum recursion depth.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * var array = [1, [2, [3, [4]], 5]];\n *\n * _.flattenDepth(array, 1);\n * // => [1, 2, [3, [4]], 5]\n *\n * _.flattenDepth(array, 2);\n * // => [1, 2, 3, [4], 5]\n */\n\n\n function flattenDepth(array, depth) {\n var length = array == null ? 0 : array.length;\n\n if (!length) {\n return [];\n }\n\n depth = depth === undefined ? 1 : toInteger(depth);\n return baseFlatten(array, depth);\n }\n /**\n * The inverse of `_.toPairs`; this method returns an object composed\n * from key-value `pairs`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} pairs The key-value pairs.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.fromPairs([['a', 1], ['b', 2]]);\n * // => { 'a': 1, 'b': 2 }\n */\n\n\n function fromPairs(pairs) {\n var index = -1,\n length = pairs == null ? 0 : pairs.length,\n result = {};\n\n while (++index < length) {\n var pair = pairs[index];\n result[pair[0]] = pair[1];\n }\n\n return result;\n }\n /**\n * Gets the first element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @alias first\n * @category Array\n * @param {Array} array The array to query.\n * @returns {*} Returns the first element of `array`.\n * @example\n *\n * _.head([1, 2, 3]);\n * // => 1\n *\n * _.head([]);\n * // => undefined\n */\n\n\n function head(array) {\n return array && array.length ? array[0] : undefined;\n }\n /**\n * Gets the index at which the first occurrence of `value` is found in `array`\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons. If `fromIndex` is negative, it's used as the\n * offset from the end of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=0] The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.indexOf([1, 2, 1, 2], 2);\n * // => 1\n *\n * // Search from the `fromIndex`.\n * _.indexOf([1, 2, 1, 2], 2, 2);\n * // => 3\n */\n\n\n function indexOf(array, value, fromIndex) {\n var length = array == null ? 0 : array.length;\n\n if (!length) {\n return -1;\n }\n\n var index = fromIndex == null ? 0 : toInteger(fromIndex);\n\n if (index < 0) {\n index = nativeMax(length + index, 0);\n }\n\n return baseIndexOf(array, value, index);\n }\n /**\n * Gets all but the last element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.initial([1, 2, 3]);\n * // => [1, 2]\n */\n\n\n function initial(array) {\n var length = array == null ? 0 : array.length;\n return length ? baseSlice(array, 0, -1) : [];\n }\n /**\n * Creates an array of unique values that are included in all given arrays\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons. The order and references of result values are\n * determined by the first array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * _.intersection([2, 1], [2, 3]);\n * // => [2]\n */\n\n\n var intersection = baseRest(function (arrays) {\n var mapped = arrayMap(arrays, castArrayLikeObject);\n return mapped.length && mapped[0] === arrays[0] ? baseIntersection(mapped) : [];\n });\n /**\n * This method is like `_.intersection` except that it accepts `iteratee`\n * which is invoked for each element of each `arrays` to generate the criterion\n * by which they're compared. The order and references of result values are\n * determined by the first array. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n * // => [2.1]\n *\n * // The `_.property` iteratee shorthand.\n * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }]\n */\n\n var intersectionBy = baseRest(function (arrays) {\n var iteratee = last(arrays),\n mapped = arrayMap(arrays, castArrayLikeObject);\n\n if (iteratee === last(mapped)) {\n iteratee = undefined;\n } else {\n mapped.pop();\n }\n\n return mapped.length && mapped[0] === arrays[0] ? baseIntersection(mapped, getIteratee(iteratee, 2)) : [];\n });\n /**\n * This method is like `_.intersection` except that it accepts `comparator`\n * which is invoked to compare elements of `arrays`. The order and references\n * of result values are determined by the first array. The comparator is\n * invoked with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.intersectionWith(objects, others, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }]\n */\n\n var intersectionWith = baseRest(function (arrays) {\n var comparator = last(arrays),\n mapped = arrayMap(arrays, castArrayLikeObject);\n comparator = typeof comparator == 'function' ? comparator : undefined;\n\n if (comparator) {\n mapped.pop();\n }\n\n return mapped.length && mapped[0] === arrays[0] ? baseIntersection(mapped, undefined, comparator) : [];\n });\n /**\n * Converts all elements in `array` into a string separated by `separator`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to convert.\n * @param {string} [separator=','] The element separator.\n * @returns {string} Returns the joined string.\n * @example\n *\n * _.join(['a', 'b', 'c'], '~');\n * // => 'a~b~c'\n */\n\n function join(array, separator) {\n return array == null ? '' : nativeJoin.call(array, separator);\n }\n /**\n * Gets the last element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {*} Returns the last element of `array`.\n * @example\n *\n * _.last([1, 2, 3]);\n * // => 3\n */\n\n\n function last(array) {\n var length = array == null ? 0 : array.length;\n return length ? array[length - 1] : undefined;\n }\n /**\n * This method is like `_.indexOf` except that it iterates over elements of\n * `array` from right to left.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=array.length-1] The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.lastIndexOf([1, 2, 1, 2], 2);\n * // => 3\n *\n * // Search from the `fromIndex`.\n * _.lastIndexOf([1, 2, 1, 2], 2, 2);\n * // => 1\n */\n\n\n function lastIndexOf(array, value, fromIndex) {\n var length = array == null ? 0 : array.length;\n\n if (!length) {\n return -1;\n }\n\n var index = length;\n\n if (fromIndex !== undefined) {\n index = toInteger(fromIndex);\n index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);\n }\n\n return value === value ? strictLastIndexOf(array, value, index) : baseFindIndex(array, baseIsNaN, index, true);\n }\n /**\n * Gets the element at index `n` of `array`. If `n` is negative, the nth\n * element from the end is returned.\n *\n * @static\n * @memberOf _\n * @since 4.11.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=0] The index of the element to return.\n * @returns {*} Returns the nth element of `array`.\n * @example\n *\n * var array = ['a', 'b', 'c', 'd'];\n *\n * _.nth(array, 1);\n * // => 'b'\n *\n * _.nth(array, -2);\n * // => 'c';\n */\n\n\n function nth(array, n) {\n return array && array.length ? baseNth(array, toInteger(n)) : undefined;\n }\n /**\n * Removes all given values from `array` using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`\n * to remove elements from an array by predicate.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {...*} [values] The values to remove.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = ['a', 'b', 'c', 'a', 'b', 'c'];\n *\n * _.pull(array, 'a', 'c');\n * console.log(array);\n * // => ['b', 'b']\n */\n\n\n var pull = baseRest(pullAll);\n /**\n * This method is like `_.pull` except that it accepts an array of values to remove.\n *\n * **Note:** Unlike `_.difference`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = ['a', 'b', 'c', 'a', 'b', 'c'];\n *\n * _.pullAll(array, ['a', 'c']);\n * console.log(array);\n * // => ['b', 'b']\n */\n\n function pullAll(array, values) {\n return array && array.length && values && values.length ? basePullAll(array, values) : array;\n }\n /**\n * This method is like `_.pullAll` except that it accepts `iteratee` which is\n * invoked for each element of `array` and `values` to generate the criterion\n * by which they're compared. The iteratee is invoked with one argument: (value).\n *\n * **Note:** Unlike `_.differenceBy`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];\n *\n * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');\n * console.log(array);\n * // => [{ 'x': 2 }]\n */\n\n\n function pullAllBy(array, values, iteratee) {\n return array && array.length && values && values.length ? basePullAll(array, values, getIteratee(iteratee, 2)) : array;\n }\n /**\n * This method is like `_.pullAll` except that it accepts `comparator` which\n * is invoked to compare elements of `array` to `values`. The comparator is\n * invoked with two arguments: (arrVal, othVal).\n *\n * **Note:** Unlike `_.differenceWith`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.6.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];\n *\n * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);\n * console.log(array);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]\n */\n\n\n function pullAllWith(array, values, comparator) {\n return array && array.length && values && values.length ? basePullAll(array, values, undefined, comparator) : array;\n }\n /**\n * Removes elements from `array` corresponding to `indexes` and returns an\n * array of removed elements.\n *\n * **Note:** Unlike `_.at`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {...(number|number[])} [indexes] The indexes of elements to remove.\n * @returns {Array} Returns the new array of removed elements.\n * @example\n *\n * var array = ['a', 'b', 'c', 'd'];\n * var pulled = _.pullAt(array, [1, 3]);\n *\n * console.log(array);\n * // => ['a', 'c']\n *\n * console.log(pulled);\n * // => ['b', 'd']\n */\n\n\n var pullAt = flatRest(function (array, indexes) {\n var length = array == null ? 0 : array.length,\n result = baseAt(array, indexes);\n basePullAt(array, arrayMap(indexes, function (index) {\n return isIndex(index, length) ? +index : index;\n }).sort(compareAscending));\n return result;\n });\n /**\n * Removes all elements from `array` that `predicate` returns truthy for\n * and returns an array of the removed elements. The predicate is invoked\n * with three arguments: (value, index, array).\n *\n * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`\n * to pull elements from an array by value.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new array of removed elements.\n * @example\n *\n * var array = [1, 2, 3, 4];\n * var evens = _.remove(array, function(n) {\n * return n % 2 == 0;\n * });\n *\n * console.log(array);\n * // => [1, 3]\n *\n * console.log(evens);\n * // => [2, 4]\n */\n\n function remove(array, predicate) {\n var result = [];\n\n if (!(array && array.length)) {\n return result;\n }\n\n var index = -1,\n indexes = [],\n length = array.length;\n predicate = getIteratee(predicate, 3);\n\n while (++index < length) {\n var value = array[index];\n\n if (predicate(value, index, array)) {\n result.push(value);\n indexes.push(index);\n }\n }\n\n basePullAt(array, indexes);\n return result;\n }\n /**\n * Reverses `array` so that the first element becomes the last, the second\n * element becomes the second to last, and so on.\n *\n * **Note:** This method mutates `array` and is based on\n * [`Array#reverse`](https://mdn.io/Array/reverse).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _.reverse(array);\n * // => [3, 2, 1]\n *\n * console.log(array);\n * // => [3, 2, 1]\n */\n\n\n function reverse(array) {\n return array == null ? array : nativeReverse.call(array);\n }\n /**\n * Creates a slice of `array` from `start` up to, but not including, `end`.\n *\n * **Note:** This method is used instead of\n * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are\n * returned.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to slice.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the slice of `array`.\n */\n\n\n function slice(array, start, end) {\n var length = array == null ? 0 : array.length;\n\n if (!length) {\n return [];\n }\n\n if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {\n start = 0;\n end = length;\n } else {\n start = start == null ? 0 : toInteger(start);\n end = end === undefined ? length : toInteger(end);\n }\n\n return baseSlice(array, start, end);\n }\n /**\n * Uses a binary search to determine the lowest index at which `value`\n * should be inserted into `array` in order to maintain its sort order.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n * @example\n *\n * _.sortedIndex([30, 50], 40);\n * // => 1\n */\n\n\n function sortedIndex(array, value) {\n return baseSortedIndex(array, value);\n }\n /**\n * This method is like `_.sortedIndex` except that it accepts `iteratee`\n * which is invoked for `value` and each element of `array` to compute their\n * sort ranking. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n * @example\n *\n * var objects = [{ 'x': 4 }, { 'x': 5 }];\n *\n * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\n * // => 0\n *\n * // The `_.property` iteratee shorthand.\n * _.sortedIndexBy(objects, { 'x': 4 }, 'x');\n * // => 0\n */\n\n\n function sortedIndexBy(array, value, iteratee) {\n return baseSortedIndexBy(array, value, getIteratee(iteratee, 2));\n }\n /**\n * This method is like `_.indexOf` except that it performs a binary\n * search on a sorted `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.sortedIndexOf([4, 5, 5, 5, 6], 5);\n * // => 1\n */\n\n\n function sortedIndexOf(array, value) {\n var length = array == null ? 0 : array.length;\n\n if (length) {\n var index = baseSortedIndex(array, value);\n\n if (index < length && eq(array[index], value)) {\n return index;\n }\n }\n\n return -1;\n }\n /**\n * This method is like `_.sortedIndex` except that it returns the highest\n * index at which `value` should be inserted into `array` in order to\n * maintain its sort order.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n * @example\n *\n * _.sortedLastIndex([4, 5, 5, 5, 6], 5);\n * // => 4\n */\n\n\n function sortedLastIndex(array, value) {\n return baseSortedIndex(array, value, true);\n }\n /**\n * This method is like `_.sortedLastIndex` except that it accepts `iteratee`\n * which is invoked for `value` and each element of `array` to compute their\n * sort ranking. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n * @example\n *\n * var objects = [{ 'x': 4 }, { 'x': 5 }];\n *\n * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\n * // => 1\n *\n * // The `_.property` iteratee shorthand.\n * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');\n * // => 1\n */\n\n\n function sortedLastIndexBy(array, value, iteratee) {\n return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true);\n }\n /**\n * This method is like `_.lastIndexOf` except that it performs a binary\n * search on a sorted `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);\n * // => 3\n */\n\n\n function sortedLastIndexOf(array, value) {\n var length = array == null ? 0 : array.length;\n\n if (length) {\n var index = baseSortedIndex(array, value, true) - 1;\n\n if (eq(array[index], value)) {\n return index;\n }\n }\n\n return -1;\n }\n /**\n * This method is like `_.uniq` except that it's designed and optimized\n * for sorted arrays.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.sortedUniq([1, 1, 2]);\n * // => [1, 2]\n */\n\n\n function sortedUniq(array) {\n return array && array.length ? baseSortedUniq(array) : [];\n }\n /**\n * This method is like `_.uniqBy` except that it's designed and optimized\n * for sorted arrays.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);\n * // => [1.1, 2.3]\n */\n\n\n function sortedUniqBy(array, iteratee) {\n return array && array.length ? baseSortedUniq(array, getIteratee(iteratee, 2)) : [];\n }\n /**\n * Gets all but the first element of `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.tail([1, 2, 3]);\n * // => [2, 3]\n */\n\n\n function tail(array) {\n var length = array == null ? 0 : array.length;\n return length ? baseSlice(array, 1, length) : [];\n }\n /**\n * Creates a slice of `array` with `n` elements taken from the beginning.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to take.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.take([1, 2, 3]);\n * // => [1]\n *\n * _.take([1, 2, 3], 2);\n * // => [1, 2]\n *\n * _.take([1, 2, 3], 5);\n * // => [1, 2, 3]\n *\n * _.take([1, 2, 3], 0);\n * // => []\n */\n\n\n function take(array, n, guard) {\n if (!(array && array.length)) {\n return [];\n }\n\n n = guard || n === undefined ? 1 : toInteger(n);\n return baseSlice(array, 0, n < 0 ? 0 : n);\n }\n /**\n * Creates a slice of `array` with `n` elements taken from the end.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to take.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.takeRight([1, 2, 3]);\n * // => [3]\n *\n * _.takeRight([1, 2, 3], 2);\n * // => [2, 3]\n *\n * _.takeRight([1, 2, 3], 5);\n * // => [1, 2, 3]\n *\n * _.takeRight([1, 2, 3], 0);\n * // => []\n */\n\n\n function takeRight(array, n, guard) {\n var length = array == null ? 0 : array.length;\n\n if (!length) {\n return [];\n }\n\n n = guard || n === undefined ? 1 : toInteger(n);\n n = length - n;\n return baseSlice(array, n < 0 ? 0 : n, length);\n }\n /**\n * Creates a slice of `array` with elements taken from the end. Elements are\n * taken until `predicate` returns falsey. The predicate is invoked with\n * three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': true },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.takeRightWhile(users, function(o) { return !o.active; });\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.matches` iteratee shorthand.\n * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });\n * // => objects for ['pebbles']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.takeRightWhile(users, ['active', false]);\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.property` iteratee shorthand.\n * _.takeRightWhile(users, 'active');\n * // => []\n */\n\n\n function takeRightWhile(array, predicate) {\n return array && array.length ? baseWhile(array, getIteratee(predicate, 3), false, true) : [];\n }\n /**\n * Creates a slice of `array` with elements taken from the beginning. Elements\n * are taken until `predicate` returns falsey. The predicate is invoked with\n * three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': false },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.takeWhile(users, function(o) { return !o.active; });\n * // => objects for ['barney', 'fred']\n *\n * // The `_.matches` iteratee shorthand.\n * _.takeWhile(users, { 'user': 'barney', 'active': false });\n * // => objects for ['barney']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.takeWhile(users, ['active', false]);\n * // => objects for ['barney', 'fred']\n *\n * // The `_.property` iteratee shorthand.\n * _.takeWhile(users, 'active');\n * // => []\n */\n\n\n function takeWhile(array, predicate) {\n return array && array.length ? baseWhile(array, getIteratee(predicate, 3)) : [];\n }\n /**\n * Creates an array of unique values, in order, from all given arrays using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * _.union([2], [1, 2]);\n * // => [2, 1]\n */\n\n\n var union = baseRest(function (arrays) {\n return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));\n });\n /**\n * This method is like `_.union` except that it accepts `iteratee` which is\n * invoked for each element of each `arrays` to generate the criterion by\n * which uniqueness is computed. Result values are chosen from the first\n * array in which the value occurs. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * _.unionBy([2.1], [1.2, 2.3], Math.floor);\n * // => [2.1, 1.2]\n *\n * // The `_.property` iteratee shorthand.\n * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }, { 'x': 2 }]\n */\n\n var unionBy = baseRest(function (arrays) {\n var iteratee = last(arrays);\n\n if (isArrayLikeObject(iteratee)) {\n iteratee = undefined;\n }\n\n return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2));\n });\n /**\n * This method is like `_.union` except that it accepts `comparator` which\n * is invoked to compare elements of `arrays`. Result values are chosen from\n * the first array in which the value occurs. The comparator is invoked\n * with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.unionWith(objects, others, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n */\n\n var unionWith = baseRest(function (arrays) {\n var comparator = last(arrays);\n comparator = typeof comparator == 'function' ? comparator : undefined;\n return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);\n });\n /**\n * Creates a duplicate-free version of an array, using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons, in which only the first occurrence of each element\n * is kept. The order of result values is determined by the order they occur\n * in the array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.uniq([2, 1, 2]);\n * // => [2, 1]\n */\n\n function uniq(array) {\n return array && array.length ? baseUniq(array) : [];\n }\n /**\n * This method is like `_.uniq` except that it accepts `iteratee` which is\n * invoked for each element in `array` to generate the criterion by which\n * uniqueness is computed. The order of result values is determined by the\n * order they occur in the array. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.uniqBy([2.1, 1.2, 2.3], Math.floor);\n * // => [2.1, 1.2]\n *\n * // The `_.property` iteratee shorthand.\n * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }, { 'x': 2 }]\n */\n\n\n function uniqBy(array, iteratee) {\n return array && array.length ? baseUniq(array, getIteratee(iteratee, 2)) : [];\n }\n /**\n * This method is like `_.uniq` except that it accepts `comparator` which\n * is invoked to compare elements of `array`. The order of result values is\n * determined by the order they occur in the array.The comparator is invoked\n * with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.uniqWith(objects, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]\n */\n\n\n function uniqWith(array, comparator) {\n comparator = typeof comparator == 'function' ? comparator : undefined;\n return array && array.length ? baseUniq(array, undefined, comparator) : [];\n }\n /**\n * This method is like `_.zip` except that it accepts an array of grouped\n * elements and creates an array regrouping the elements to their pre-zip\n * configuration.\n *\n * @static\n * @memberOf _\n * @since 1.2.0\n * @category Array\n * @param {Array} array The array of grouped elements to process.\n * @returns {Array} Returns the new array of regrouped elements.\n * @example\n *\n * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);\n * // => [['a', 1, true], ['b', 2, false]]\n *\n * _.unzip(zipped);\n * // => [['a', 'b'], [1, 2], [true, false]]\n */\n\n\n function unzip(array) {\n if (!(array && array.length)) {\n return [];\n }\n\n var length = 0;\n array = arrayFilter(array, function (group) {\n if (isArrayLikeObject(group)) {\n length = nativeMax(group.length, length);\n return true;\n }\n });\n return baseTimes(length, function (index) {\n return arrayMap(array, baseProperty(index));\n });\n }\n /**\n * This method is like `_.unzip` except that it accepts `iteratee` to specify\n * how regrouped values should be combined. The iteratee is invoked with the\n * elements of each group: (...group).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Array\n * @param {Array} array The array of grouped elements to process.\n * @param {Function} [iteratee=_.identity] The function to combine\n * regrouped values.\n * @returns {Array} Returns the new array of regrouped elements.\n * @example\n *\n * var zipped = _.zip([1, 2], [10, 20], [100, 200]);\n * // => [[1, 10, 100], [2, 20, 200]]\n *\n * _.unzipWith(zipped, _.add);\n * // => [3, 30, 300]\n */\n\n\n function unzipWith(array, iteratee) {\n if (!(array && array.length)) {\n return [];\n }\n\n var result = unzip(array);\n\n if (iteratee == null) {\n return result;\n }\n\n return arrayMap(result, function (group) {\n return apply(iteratee, undefined, group);\n });\n }\n /**\n * Creates an array excluding all given values using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * **Note:** Unlike `_.pull`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...*} [values] The values to exclude.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.difference, _.xor\n * @example\n *\n * _.without([2, 1, 2, 3], 1, 2);\n * // => [3]\n */\n\n\n var without = baseRest(function (array, values) {\n return isArrayLikeObject(array) ? baseDifference(array, values) : [];\n });\n /**\n * Creates an array of unique values that is the\n * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)\n * of the given arrays. The order of result values is determined by the order\n * they occur in the arrays.\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.difference, _.without\n * @example\n *\n * _.xor([2, 1], [2, 3]);\n * // => [1, 3]\n */\n\n var xor = baseRest(function (arrays) {\n return baseXor(arrayFilter(arrays, isArrayLikeObject));\n });\n /**\n * This method is like `_.xor` except that it accepts `iteratee` which is\n * invoked for each element of each `arrays` to generate the criterion by\n * which by which they're compared. The order of result values is determined\n * by the order they occur in the arrays. The iteratee is invoked with one\n * argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n * // => [1.2, 3.4]\n *\n * // The `_.property` iteratee shorthand.\n * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 2 }]\n */\n\n var xorBy = baseRest(function (arrays) {\n var iteratee = last(arrays);\n\n if (isArrayLikeObject(iteratee)) {\n iteratee = undefined;\n }\n\n return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2));\n });\n /**\n * This method is like `_.xor` except that it accepts `comparator` which is\n * invoked to compare elements of `arrays`. The order of result values is\n * determined by the order they occur in the arrays. The comparator is invoked\n * with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.xorWith(objects, others, _.isEqual);\n * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n */\n\n var xorWith = baseRest(function (arrays) {\n var comparator = last(arrays);\n comparator = typeof comparator == 'function' ? comparator : undefined;\n return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);\n });\n /**\n * Creates an array of grouped elements, the first of which contains the\n * first elements of the given arrays, the second of which contains the\n * second elements of the given arrays, and so on.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to process.\n * @returns {Array} Returns the new array of grouped elements.\n * @example\n *\n * _.zip(['a', 'b'], [1, 2], [true, false]);\n * // => [['a', 1, true], ['b', 2, false]]\n */\n\n var zip = baseRest(unzip);\n /**\n * This method is like `_.fromPairs` except that it accepts two arrays,\n * one of property identifiers and one of corresponding values.\n *\n * @static\n * @memberOf _\n * @since 0.4.0\n * @category Array\n * @param {Array} [props=[]] The property identifiers.\n * @param {Array} [values=[]] The property values.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.zipObject(['a', 'b'], [1, 2]);\n * // => { 'a': 1, 'b': 2 }\n */\n\n function zipObject(props, values) {\n return baseZipObject(props || [], values || [], assignValue);\n }\n /**\n * This method is like `_.zipObject` except that it supports property paths.\n *\n * @static\n * @memberOf _\n * @since 4.1.0\n * @category Array\n * @param {Array} [props=[]] The property identifiers.\n * @param {Array} [values=[]] The property values.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);\n * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }\n */\n\n\n function zipObjectDeep(props, values) {\n return baseZipObject(props || [], values || [], baseSet);\n }\n /**\n * This method is like `_.zip` except that it accepts `iteratee` to specify\n * how grouped values should be combined. The iteratee is invoked with the\n * elements of each group: (...group).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Array\n * @param {...Array} [arrays] The arrays to process.\n * @param {Function} [iteratee=_.identity] The function to combine\n * grouped values.\n * @returns {Array} Returns the new array of grouped elements.\n * @example\n *\n * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {\n * return a + b + c;\n * });\n * // => [111, 222]\n */\n\n\n var zipWith = baseRest(function (arrays) {\n var length = arrays.length,\n iteratee = length > 1 ? arrays[length - 1] : undefined;\n iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;\n return unzipWith(arrays, iteratee);\n });\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a `lodash` wrapper instance that wraps `value` with explicit method\n * chain sequences enabled. The result of such sequences must be unwrapped\n * with `_#value`.\n *\n * @static\n * @memberOf _\n * @since 1.3.0\n * @category Seq\n * @param {*} value The value to wrap.\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36 },\n * { 'user': 'fred', 'age': 40 },\n * { 'user': 'pebbles', 'age': 1 }\n * ];\n *\n * var youngest = _\n * .chain(users)\n * .sortBy('age')\n * .map(function(o) {\n * return o.user + ' is ' + o.age;\n * })\n * .head()\n * .value();\n * // => 'pebbles is 1'\n */\n\n function chain(value) {\n var result = lodash(value);\n result.__chain__ = true;\n return result;\n }\n /**\n * This method invokes `interceptor` and returns `value`. The interceptor\n * is invoked with one argument; (value). The purpose of this method is to\n * \"tap into\" a method chain sequence in order to modify intermediate results.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Seq\n * @param {*} value The value to provide to `interceptor`.\n * @param {Function} interceptor The function to invoke.\n * @returns {*} Returns `value`.\n * @example\n *\n * _([1, 2, 3])\n * .tap(function(array) {\n * // Mutate input array.\n * array.pop();\n * })\n * .reverse()\n * .value();\n * // => [2, 1]\n */\n\n\n function tap(value, interceptor) {\n interceptor(value);\n return value;\n }\n /**\n * This method is like `_.tap` except that it returns the result of `interceptor`.\n * The purpose of this method is to \"pass thru\" values replacing intermediate\n * results in a method chain sequence.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Seq\n * @param {*} value The value to provide to `interceptor`.\n * @param {Function} interceptor The function to invoke.\n * @returns {*} Returns the result of `interceptor`.\n * @example\n *\n * _(' abc ')\n * .chain()\n * .trim()\n * .thru(function(value) {\n * return [value];\n * })\n * .value();\n * // => ['abc']\n */\n\n\n function thru(value, interceptor) {\n return interceptor(value);\n }\n /**\n * This method is the wrapper version of `_.at`.\n *\n * @name at\n * @memberOf _\n * @since 1.0.0\n * @category Seq\n * @param {...(string|string[])} [paths] The property paths to pick.\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };\n *\n * _(object).at(['a[0].b.c', 'a[1]']).value();\n * // => [3, 4]\n */\n\n\n var wrapperAt = flatRest(function (paths) {\n var length = paths.length,\n start = length ? paths[0] : 0,\n value = this.__wrapped__,\n interceptor = function interceptor(object) {\n return baseAt(object, paths);\n };\n\n if (length > 1 || this.__actions__.length || !(value instanceof LazyWrapper) || !isIndex(start)) {\n return this.thru(interceptor);\n }\n\n value = value.slice(start, +start + (length ? 1 : 0));\n\n value.__actions__.push({\n 'func': thru,\n 'args': [interceptor],\n 'thisArg': undefined\n });\n\n return new LodashWrapper(value, this.__chain__).thru(function (array) {\n if (length && !array.length) {\n array.push(undefined);\n }\n\n return array;\n });\n });\n /**\n * Creates a `lodash` wrapper instance with explicit method chain sequences enabled.\n *\n * @name chain\n * @memberOf _\n * @since 0.1.0\n * @category Seq\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36 },\n * { 'user': 'fred', 'age': 40 }\n * ];\n *\n * // A sequence without explicit chaining.\n * _(users).head();\n * // => { 'user': 'barney', 'age': 36 }\n *\n * // A sequence with explicit chaining.\n * _(users)\n * .chain()\n * .head()\n * .pick('user')\n * .value();\n * // => { 'user': 'barney' }\n */\n\n function wrapperChain() {\n return chain(this);\n }\n /**\n * Executes the chain sequence and returns the wrapped result.\n *\n * @name commit\n * @memberOf _\n * @since 3.2.0\n * @category Seq\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var array = [1, 2];\n * var wrapped = _(array).push(3);\n *\n * console.log(array);\n * // => [1, 2]\n *\n * wrapped = wrapped.commit();\n * console.log(array);\n * // => [1, 2, 3]\n *\n * wrapped.last();\n * // => 3\n *\n * console.log(array);\n * // => [1, 2, 3]\n */\n\n\n function wrapperCommit() {\n return new LodashWrapper(this.value(), this.__chain__);\n }\n /**\n * Gets the next value on a wrapped object following the\n * [iterator protocol](https://mdn.io/iteration_protocols#iterator).\n *\n * @name next\n * @memberOf _\n * @since 4.0.0\n * @category Seq\n * @returns {Object} Returns the next iterator value.\n * @example\n *\n * var wrapped = _([1, 2]);\n *\n * wrapped.next();\n * // => { 'done': false, 'value': 1 }\n *\n * wrapped.next();\n * // => { 'done': false, 'value': 2 }\n *\n * wrapped.next();\n * // => { 'done': true, 'value': undefined }\n */\n\n\n function wrapperNext() {\n if (this.__values__ === undefined) {\n this.__values__ = toArray(this.value());\n }\n\n var done = this.__index__ >= this.__values__.length,\n value = done ? undefined : this.__values__[this.__index__++];\n return {\n 'done': done,\n 'value': value\n };\n }\n /**\n * Enables the wrapper to be iterable.\n *\n * @name Symbol.iterator\n * @memberOf _\n * @since 4.0.0\n * @category Seq\n * @returns {Object} Returns the wrapper object.\n * @example\n *\n * var wrapped = _([1, 2]);\n *\n * wrapped[Symbol.iterator]() === wrapped;\n * // => true\n *\n * Array.from(wrapped);\n * // => [1, 2]\n */\n\n\n function wrapperToIterator() {\n return this;\n }\n /**\n * Creates a clone of the chain sequence planting `value` as the wrapped value.\n *\n * @name plant\n * @memberOf _\n * @since 3.2.0\n * @category Seq\n * @param {*} value The value to plant.\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * function square(n) {\n * return n * n;\n * }\n *\n * var wrapped = _([1, 2]).map(square);\n * var other = wrapped.plant([3, 4]);\n *\n * other.value();\n * // => [9, 16]\n *\n * wrapped.value();\n * // => [1, 4]\n */\n\n\n function wrapperPlant(value) {\n var result,\n parent = this;\n\n while (parent instanceof baseLodash) {\n var clone = wrapperClone(parent);\n clone.__index__ = 0;\n clone.__values__ = undefined;\n\n if (result) {\n previous.__wrapped__ = clone;\n } else {\n result = clone;\n }\n\n var previous = clone;\n parent = parent.__wrapped__;\n }\n\n previous.__wrapped__ = value;\n return result;\n }\n /**\n * This method is the wrapper version of `_.reverse`.\n *\n * **Note:** This method mutates the wrapped array.\n *\n * @name reverse\n * @memberOf _\n * @since 0.1.0\n * @category Seq\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _(array).reverse().value()\n * // => [3, 2, 1]\n *\n * console.log(array);\n * // => [3, 2, 1]\n */\n\n\n function wrapperReverse() {\n var value = this.__wrapped__;\n\n if (value instanceof LazyWrapper) {\n var wrapped = value;\n\n if (this.__actions__.length) {\n wrapped = new LazyWrapper(this);\n }\n\n wrapped = wrapped.reverse();\n\n wrapped.__actions__.push({\n 'func': thru,\n 'args': [reverse],\n 'thisArg': undefined\n });\n\n return new LodashWrapper(wrapped, this.__chain__);\n }\n\n return this.thru(reverse);\n }\n /**\n * Executes the chain sequence to resolve the unwrapped value.\n *\n * @name value\n * @memberOf _\n * @since 0.1.0\n * @alias toJSON, valueOf\n * @category Seq\n * @returns {*} Returns the resolved unwrapped value.\n * @example\n *\n * _([1, 2, 3]).value();\n * // => [1, 2, 3]\n */\n\n\n function wrapperValue() {\n return baseWrapperValue(this.__wrapped__, this.__actions__);\n }\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates an object composed of keys generated from the results of running\n * each element of `collection` thru `iteratee`. The corresponding value of\n * each key is the number of times the key was returned by `iteratee`. The\n * iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 0.5.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n * @returns {Object} Returns the composed aggregate object.\n * @example\n *\n * _.countBy([6.1, 4.2, 6.3], Math.floor);\n * // => { '4': 1, '6': 2 }\n *\n * // The `_.property` iteratee shorthand.\n * _.countBy(['one', 'two', 'three'], 'length');\n * // => { '3': 2, '5': 1 }\n */\n\n\n var countBy = createAggregator(function (result, value, key) {\n if (hasOwnProperty.call(result, key)) {\n ++result[key];\n } else {\n baseAssignValue(result, key, 1);\n }\n });\n /**\n * Checks if `predicate` returns truthy for **all** elements of `collection`.\n * Iteration is stopped once `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index|key, collection).\n *\n * **Note:** This method returns `true` for\n * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because\n * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of\n * elements of empty collections.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {boolean} Returns `true` if all elements pass the predicate check,\n * else `false`.\n * @example\n *\n * _.every([true, 1, null, 'yes'], Boolean);\n * // => false\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': false },\n * { 'user': 'fred', 'age': 40, 'active': false }\n * ];\n *\n * // The `_.matches` iteratee shorthand.\n * _.every(users, { 'user': 'barney', 'active': false });\n * // => false\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.every(users, ['active', false]);\n * // => true\n *\n * // The `_.property` iteratee shorthand.\n * _.every(users, 'active');\n * // => false\n */\n\n function every(collection, predicate, guard) {\n var func = isArray(collection) ? arrayEvery : baseEvery;\n\n if (guard && isIterateeCall(collection, predicate, guard)) {\n predicate = undefined;\n }\n\n return func(collection, getIteratee(predicate, 3));\n }\n /**\n * Iterates over elements of `collection`, returning an array of all elements\n * `predicate` returns truthy for. The predicate is invoked with three\n * arguments: (value, index|key, collection).\n *\n * **Note:** Unlike `_.remove`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n * @see _.reject\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': true },\n * { 'user': 'fred', 'age': 40, 'active': false }\n * ];\n *\n * _.filter(users, function(o) { return !o.active; });\n * // => objects for ['fred']\n *\n * // The `_.matches` iteratee shorthand.\n * _.filter(users, { 'age': 36, 'active': true });\n * // => objects for ['barney']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.filter(users, ['active', false]);\n * // => objects for ['fred']\n *\n * // The `_.property` iteratee shorthand.\n * _.filter(users, 'active');\n * // => objects for ['barney']\n *\n * // Combining several predicates using `_.overEvery` or `_.overSome`.\n * _.filter(users, _.overSome([{ 'age': 36 }, ['age', 40]]));\n * // => objects for ['fred', 'barney']\n */\n\n\n function filter(collection, predicate) {\n var func = isArray(collection) ? arrayFilter : baseFilter;\n return func(collection, getIteratee(predicate, 3));\n }\n /**\n * Iterates over elements of `collection`, returning the first element\n * `predicate` returns truthy for. The predicate is invoked with three\n * arguments: (value, index|key, collection).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param {number} [fromIndex=0] The index to search from.\n * @returns {*} Returns the matched element, else `undefined`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': true },\n * { 'user': 'fred', 'age': 40, 'active': false },\n * { 'user': 'pebbles', 'age': 1, 'active': true }\n * ];\n *\n * _.find(users, function(o) { return o.age < 40; });\n * // => object for 'barney'\n *\n * // The `_.matches` iteratee shorthand.\n * _.find(users, { 'age': 1, 'active': true });\n * // => object for 'pebbles'\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.find(users, ['active', false]);\n * // => object for 'fred'\n *\n * // The `_.property` iteratee shorthand.\n * _.find(users, 'active');\n * // => object for 'barney'\n */\n\n\n var find = createFind(findIndex);\n /**\n * This method is like `_.find` except that it iterates over elements of\n * `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param {number} [fromIndex=collection.length-1] The index to search from.\n * @returns {*} Returns the matched element, else `undefined`.\n * @example\n *\n * _.findLast([1, 2, 3, 4], function(n) {\n * return n % 2 == 1;\n * });\n * // => 3\n */\n\n var findLast = createFind(findLastIndex);\n /**\n * Creates a flattened array of values by running each element in `collection`\n * thru `iteratee` and flattening the mapped results. The iteratee is invoked\n * with three arguments: (value, index|key, collection).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * function duplicate(n) {\n * return [n, n];\n * }\n *\n * _.flatMap([1, 2], duplicate);\n * // => [1, 1, 2, 2]\n */\n\n function flatMap(collection, iteratee) {\n return baseFlatten(map(collection, iteratee), 1);\n }\n /**\n * This method is like `_.flatMap` except that it recursively flattens the\n * mapped results.\n *\n * @static\n * @memberOf _\n * @since 4.7.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * function duplicate(n) {\n * return [[[n, n]]];\n * }\n *\n * _.flatMapDeep([1, 2], duplicate);\n * // => [1, 1, 2, 2]\n */\n\n\n function flatMapDeep(collection, iteratee) {\n return baseFlatten(map(collection, iteratee), INFINITY);\n }\n /**\n * This method is like `_.flatMap` except that it recursively flattens the\n * mapped results up to `depth` times.\n *\n * @static\n * @memberOf _\n * @since 4.7.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {number} [depth=1] The maximum recursion depth.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * function duplicate(n) {\n * return [[[n, n]]];\n * }\n *\n * _.flatMapDepth([1, 2], duplicate, 2);\n * // => [[1, 1], [2, 2]]\n */\n\n\n function flatMapDepth(collection, iteratee, depth) {\n depth = depth === undefined ? 1 : toInteger(depth);\n return baseFlatten(map(collection, iteratee), depth);\n }\n /**\n * Iterates over elements of `collection` and invokes `iteratee` for each element.\n * The iteratee is invoked with three arguments: (value, index|key, collection).\n * Iteratee functions may exit iteration early by explicitly returning `false`.\n *\n * **Note:** As with other \"Collections\" methods, objects with a \"length\"\n * property are iterated like arrays. To avoid this behavior use `_.forIn`\n * or `_.forOwn` for object iteration.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @alias each\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n * @see _.forEachRight\n * @example\n *\n * _.forEach([1, 2], function(value) {\n * console.log(value);\n * });\n * // => Logs `1` then `2`.\n *\n * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'a' then 'b' (iteration order is not guaranteed).\n */\n\n\n function forEach(collection, iteratee) {\n var func = isArray(collection) ? arrayEach : baseEach;\n return func(collection, getIteratee(iteratee, 3));\n }\n /**\n * This method is like `_.forEach` except that it iterates over elements of\n * `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @alias eachRight\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n * @see _.forEach\n * @example\n *\n * _.forEachRight([1, 2], function(value) {\n * console.log(value);\n * });\n * // => Logs `2` then `1`.\n */\n\n\n function forEachRight(collection, iteratee) {\n var func = isArray(collection) ? arrayEachRight : baseEachRight;\n return func(collection, getIteratee(iteratee, 3));\n }\n /**\n * Creates an object composed of keys generated from the results of running\n * each element of `collection` thru `iteratee`. The order of grouped values\n * is determined by the order they occur in `collection`. The corresponding\n * value of each key is an array of elements responsible for generating the\n * key. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n * @returns {Object} Returns the composed aggregate object.\n * @example\n *\n * _.groupBy([6.1, 4.2, 6.3], Math.floor);\n * // => { '4': [4.2], '6': [6.1, 6.3] }\n *\n * // The `_.property` iteratee shorthand.\n * _.groupBy(['one', 'two', 'three'], 'length');\n * // => { '3': ['one', 'two'], '5': ['three'] }\n */\n\n\n var groupBy = createAggregator(function (result, value, key) {\n if (hasOwnProperty.call(result, key)) {\n result[key].push(value);\n } else {\n baseAssignValue(result, key, [value]);\n }\n });\n /**\n * Checks if `value` is in `collection`. If `collection` is a string, it's\n * checked for a substring of `value`, otherwise\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * is used for equality comparisons. If `fromIndex` is negative, it's used as\n * the offset from the end of `collection`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object|string} collection The collection to inspect.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=0] The index to search from.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.\n * @returns {boolean} Returns `true` if `value` is found, else `false`.\n * @example\n *\n * _.includes([1, 2, 3], 1);\n * // => true\n *\n * _.includes([1, 2, 3], 1, 2);\n * // => false\n *\n * _.includes({ 'a': 1, 'b': 2 }, 1);\n * // => true\n *\n * _.includes('abcd', 'bc');\n * // => true\n */\n\n function includes(collection, value, fromIndex, guard) {\n collection = isArrayLike(collection) ? collection : values(collection);\n fromIndex = fromIndex && !guard ? toInteger(fromIndex) : 0;\n var length = collection.length;\n\n if (fromIndex < 0) {\n fromIndex = nativeMax(length + fromIndex, 0);\n }\n\n return isString(collection) ? fromIndex <= length && collection.indexOf(value, fromIndex) > -1 : !!length && baseIndexOf(collection, value, fromIndex) > -1;\n }\n /**\n * Invokes the method at `path` of each element in `collection`, returning\n * an array of the results of each invoked method. Any additional arguments\n * are provided to each invoked method. If `path` is a function, it's invoked\n * for, and `this` bound to, each element in `collection`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Array|Function|string} path The path of the method to invoke or\n * the function invoked per iteration.\n * @param {...*} [args] The arguments to invoke each method with.\n * @returns {Array} Returns the array of results.\n * @example\n *\n * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');\n * // => [[1, 5, 7], [1, 2, 3]]\n *\n * _.invokeMap([123, 456], String.prototype.split, '');\n * // => [['1', '2', '3'], ['4', '5', '6']]\n */\n\n\n var invokeMap = baseRest(function (collection, path, args) {\n var index = -1,\n isFunc = typeof path == 'function',\n result = isArrayLike(collection) ? Array(collection.length) : [];\n baseEach(collection, function (value) {\n result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);\n });\n return result;\n });\n /**\n * Creates an object composed of keys generated from the results of running\n * each element of `collection` thru `iteratee`. The corresponding value of\n * each key is the last element responsible for generating the key. The\n * iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n * @returns {Object} Returns the composed aggregate object.\n * @example\n *\n * var array = [\n * { 'dir': 'left', 'code': 97 },\n * { 'dir': 'right', 'code': 100 }\n * ];\n *\n * _.keyBy(array, function(o) {\n * return String.fromCharCode(o.code);\n * });\n * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }\n *\n * _.keyBy(array, 'dir');\n * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }\n */\n\n var keyBy = createAggregator(function (result, value, key) {\n baseAssignValue(result, key, value);\n });\n /**\n * Creates an array of values by running each element in `collection` thru\n * `iteratee`. The iteratee is invoked with three arguments:\n * (value, index|key, collection).\n *\n * Many lodash methods are guarded to work as iteratees for methods like\n * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.\n *\n * The guarded methods are:\n * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,\n * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,\n * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,\n * `template`, `trim`, `trimEnd`, `trimStart`, and `words`\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new mapped array.\n * @example\n *\n * function square(n) {\n * return n * n;\n * }\n *\n * _.map([4, 8], square);\n * // => [16, 64]\n *\n * _.map({ 'a': 4, 'b': 8 }, square);\n * // => [16, 64] (iteration order is not guaranteed)\n *\n * var users = [\n * { 'user': 'barney' },\n * { 'user': 'fred' }\n * ];\n *\n * // The `_.property` iteratee shorthand.\n * _.map(users, 'user');\n * // => ['barney', 'fred']\n */\n\n function map(collection, iteratee) {\n var func = isArray(collection) ? arrayMap : baseMap;\n return func(collection, getIteratee(iteratee, 3));\n }\n /**\n * This method is like `_.sortBy` except that it allows specifying the sort\n * orders of the iteratees to sort by. If `orders` is unspecified, all values\n * are sorted in ascending order. Otherwise, specify an order of \"desc\" for\n * descending or \"asc\" for ascending sort order of corresponding values.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]\n * The iteratees to sort by.\n * @param {string[]} [orders] The sort orders of `iteratees`.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.\n * @returns {Array} Returns the new sorted array.\n * @example\n *\n * var users = [\n * { 'user': 'fred', 'age': 48 },\n * { 'user': 'barney', 'age': 34 },\n * { 'user': 'fred', 'age': 40 },\n * { 'user': 'barney', 'age': 36 }\n * ];\n *\n * // Sort by `user` in ascending order and by `age` in descending order.\n * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);\n * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]\n */\n\n\n function orderBy(collection, iteratees, orders, guard) {\n if (collection == null) {\n return [];\n }\n\n if (!isArray(iteratees)) {\n iteratees = iteratees == null ? [] : [iteratees];\n }\n\n orders = guard ? undefined : orders;\n\n if (!isArray(orders)) {\n orders = orders == null ? [] : [orders];\n }\n\n return baseOrderBy(collection, iteratees, orders);\n }\n /**\n * Creates an array of elements split into two groups, the first of which\n * contains elements `predicate` returns truthy for, the second of which\n * contains elements `predicate` returns falsey for. The predicate is\n * invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the array of grouped elements.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': false },\n * { 'user': 'fred', 'age': 40, 'active': true },\n * { 'user': 'pebbles', 'age': 1, 'active': false }\n * ];\n *\n * _.partition(users, function(o) { return o.active; });\n * // => objects for [['fred'], ['barney', 'pebbles']]\n *\n * // The `_.matches` iteratee shorthand.\n * _.partition(users, { 'age': 1, 'active': false });\n * // => objects for [['pebbles'], ['barney', 'fred']]\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.partition(users, ['active', false]);\n * // => objects for [['barney', 'pebbles'], ['fred']]\n *\n * // The `_.property` iteratee shorthand.\n * _.partition(users, 'active');\n * // => objects for [['fred'], ['barney', 'pebbles']]\n */\n\n\n var partition = createAggregator(function (result, value, key) {\n result[key ? 0 : 1].push(value);\n }, function () {\n return [[], []];\n });\n /**\n * Reduces `collection` to a value which is the accumulated result of running\n * each element in `collection` thru `iteratee`, where each successive\n * invocation is supplied the return value of the previous. If `accumulator`\n * is not given, the first element of `collection` is used as the initial\n * value. The iteratee is invoked with four arguments:\n * (accumulator, value, index|key, collection).\n *\n * Many lodash methods are guarded to work as iteratees for methods like\n * `_.reduce`, `_.reduceRight`, and `_.transform`.\n *\n * The guarded methods are:\n * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,\n * and `sortBy`\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @returns {*} Returns the accumulated value.\n * @see _.reduceRight\n * @example\n *\n * _.reduce([1, 2], function(sum, n) {\n * return sum + n;\n * }, 0);\n * // => 3\n *\n * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\n * (result[value] || (result[value] = [])).push(key);\n * return result;\n * }, {});\n * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)\n */\n\n function reduce(collection, iteratee, accumulator) {\n var func = isArray(collection) ? arrayReduce : baseReduce,\n initAccum = arguments.length < 3;\n return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);\n }\n /**\n * This method is like `_.reduce` except that it iterates over elements of\n * `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @returns {*} Returns the accumulated value.\n * @see _.reduce\n * @example\n *\n * var array = [[0, 1], [2, 3], [4, 5]];\n *\n * _.reduceRight(array, function(flattened, other) {\n * return flattened.concat(other);\n * }, []);\n * // => [4, 5, 2, 3, 0, 1]\n */\n\n\n function reduceRight(collection, iteratee, accumulator) {\n var func = isArray(collection) ? arrayReduceRight : baseReduce,\n initAccum = arguments.length < 3;\n return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);\n }\n /**\n * The opposite of `_.filter`; this method returns the elements of `collection`\n * that `predicate` does **not** return truthy for.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n * @see _.filter\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': false },\n * { 'user': 'fred', 'age': 40, 'active': true }\n * ];\n *\n * _.reject(users, function(o) { return !o.active; });\n * // => objects for ['fred']\n *\n * // The `_.matches` iteratee shorthand.\n * _.reject(users, { 'age': 40, 'active': true });\n * // => objects for ['barney']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.reject(users, ['active', false]);\n * // => objects for ['fred']\n *\n * // The `_.property` iteratee shorthand.\n * _.reject(users, 'active');\n * // => objects for ['barney']\n */\n\n\n function reject(collection, predicate) {\n var func = isArray(collection) ? arrayFilter : baseFilter;\n return func(collection, negate(getIteratee(predicate, 3)));\n }\n /**\n * Gets a random element from `collection`.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to sample.\n * @returns {*} Returns the random element.\n * @example\n *\n * _.sample([1, 2, 3, 4]);\n * // => 2\n */\n\n\n function sample(collection) {\n var func = isArray(collection) ? arraySample : baseSample;\n return func(collection);\n }\n /**\n * Gets `n` random elements at unique keys from `collection` up to the\n * size of `collection`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to sample.\n * @param {number} [n=1] The number of elements to sample.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the random elements.\n * @example\n *\n * _.sampleSize([1, 2, 3], 2);\n * // => [3, 1]\n *\n * _.sampleSize([1, 2, 3], 4);\n * // => [2, 3, 1]\n */\n\n\n function sampleSize(collection, n, guard) {\n if (guard ? isIterateeCall(collection, n, guard) : n === undefined) {\n n = 1;\n } else {\n n = toInteger(n);\n }\n\n var func = isArray(collection) ? arraySampleSize : baseSampleSize;\n return func(collection, n);\n }\n /**\n * Creates an array of shuffled values, using a version of the\n * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to shuffle.\n * @returns {Array} Returns the new shuffled array.\n * @example\n *\n * _.shuffle([1, 2, 3, 4]);\n * // => [4, 1, 3, 2]\n */\n\n\n function shuffle(collection) {\n var func = isArray(collection) ? arrayShuffle : baseShuffle;\n return func(collection);\n }\n /**\n * Gets the size of `collection` by returning its length for array-like\n * values or the number of own enumerable string keyed properties for objects.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object|string} collection The collection to inspect.\n * @returns {number} Returns the collection size.\n * @example\n *\n * _.size([1, 2, 3]);\n * // => 3\n *\n * _.size({ 'a': 1, 'b': 2 });\n * // => 2\n *\n * _.size('pebbles');\n * // => 7\n */\n\n\n function size(collection) {\n if (collection == null) {\n return 0;\n }\n\n if (isArrayLike(collection)) {\n return isString(collection) ? stringSize(collection) : collection.length;\n }\n\n var tag = getTag(collection);\n\n if (tag == mapTag || tag == setTag) {\n return collection.size;\n }\n\n return baseKeys(collection).length;\n }\n /**\n * Checks if `predicate` returns truthy for **any** element of `collection`.\n * Iteration is stopped once `predicate` returns truthy. The predicate is\n * invoked with three arguments: (value, index|key, collection).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n * else `false`.\n * @example\n *\n * _.some([null, 0, 'yes', false], Boolean);\n * // => true\n *\n * var users = [\n * { 'user': 'barney', 'active': true },\n * { 'user': 'fred', 'active': false }\n * ];\n *\n * // The `_.matches` iteratee shorthand.\n * _.some(users, { 'user': 'barney', 'active': false });\n * // => false\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.some(users, ['active', false]);\n * // => true\n *\n * // The `_.property` iteratee shorthand.\n * _.some(users, 'active');\n * // => true\n */\n\n\n function some(collection, predicate, guard) {\n var func = isArray(collection) ? arraySome : baseSome;\n\n if (guard && isIterateeCall(collection, predicate, guard)) {\n predicate = undefined;\n }\n\n return func(collection, getIteratee(predicate, 3));\n }\n /**\n * Creates an array of elements, sorted in ascending order by the results of\n * running each element in a collection thru each iteratee. This method\n * performs a stable sort, that is, it preserves the original sort order of\n * equal elements. The iteratees are invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {...(Function|Function[])} [iteratees=[_.identity]]\n * The iteratees to sort by.\n * @returns {Array} Returns the new sorted array.\n * @example\n *\n * var users = [\n * { 'user': 'fred', 'age': 48 },\n * { 'user': 'barney', 'age': 36 },\n * { 'user': 'fred', 'age': 30 },\n * { 'user': 'barney', 'age': 34 }\n * ];\n *\n * _.sortBy(users, [function(o) { return o.user; }]);\n * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 30]]\n *\n * _.sortBy(users, ['user', 'age']);\n * // => objects for [['barney', 34], ['barney', 36], ['fred', 30], ['fred', 48]]\n */\n\n\n var sortBy = baseRest(function (collection, iteratees) {\n if (collection == null) {\n return [];\n }\n\n var length = iteratees.length;\n\n if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {\n iteratees = [];\n } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {\n iteratees = [iteratees[0]];\n }\n\n return baseOrderBy(collection, baseFlatten(iteratees, 1), []);\n });\n /*------------------------------------------------------------------------*/\n\n /**\n * Gets the timestamp of the number of milliseconds that have elapsed since\n * the Unix epoch (1 January 1970 00:00:00 UTC).\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Date\n * @returns {number} Returns the timestamp.\n * @example\n *\n * _.defer(function(stamp) {\n * console.log(_.now() - stamp);\n * }, _.now());\n * // => Logs the number of milliseconds it took for the deferred invocation.\n */\n\n var now = ctxNow || function () {\n return root.Date.now();\n };\n /*------------------------------------------------------------------------*/\n\n /**\n * The opposite of `_.before`; this method creates a function that invokes\n * `func` once it's called `n` or more times.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {number} n The number of calls before `func` is invoked.\n * @param {Function} func The function to restrict.\n * @returns {Function} Returns the new restricted function.\n * @example\n *\n * var saves = ['profile', 'settings'];\n *\n * var done = _.after(saves.length, function() {\n * console.log('done saving!');\n * });\n *\n * _.forEach(saves, function(type) {\n * asyncSave({ 'type': type, 'complete': done });\n * });\n * // => Logs 'done saving!' after the two async saves have completed.\n */\n\n\n function after(n, func) {\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n\n n = toInteger(n);\n return function () {\n if (--n < 1) {\n return func.apply(this, arguments);\n }\n };\n }\n /**\n * Creates a function that invokes `func`, with up to `n` arguments,\n * ignoring any additional arguments.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {Function} func The function to cap arguments for.\n * @param {number} [n=func.length] The arity cap.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Function} Returns the new capped function.\n * @example\n *\n * _.map(['6', '8', '10'], _.ary(parseInt, 1));\n * // => [6, 8, 10]\n */\n\n\n function ary(func, n, guard) {\n n = guard ? undefined : n;\n n = func && n == null ? func.length : n;\n return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);\n }\n /**\n * Creates a function that invokes `func`, with the `this` binding and arguments\n * of the created function, while it's called less than `n` times. Subsequent\n * calls to the created function return the result of the last `func` invocation.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {number} n The number of calls at which `func` is no longer invoked.\n * @param {Function} func The function to restrict.\n * @returns {Function} Returns the new restricted function.\n * @example\n *\n * jQuery(element).on('click', _.before(5, addContactToList));\n * // => Allows adding up to 4 contacts to the list.\n */\n\n\n function before(n, func) {\n var result;\n\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n\n n = toInteger(n);\n return function () {\n if (--n > 0) {\n result = func.apply(this, arguments);\n }\n\n if (n <= 1) {\n func = undefined;\n }\n\n return result;\n };\n }\n /**\n * Creates a function that invokes `func` with the `this` binding of `thisArg`\n * and `partials` prepended to the arguments it receives.\n *\n * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,\n * may be used as a placeholder for partially applied arguments.\n *\n * **Note:** Unlike native `Function#bind`, this method doesn't set the \"length\"\n * property of bound functions.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to bind.\n * @param {*} thisArg The `this` binding of `func`.\n * @param {...*} [partials] The arguments to be partially applied.\n * @returns {Function} Returns the new bound function.\n * @example\n *\n * function greet(greeting, punctuation) {\n * return greeting + ' ' + this.user + punctuation;\n * }\n *\n * var object = { 'user': 'fred' };\n *\n * var bound = _.bind(greet, object, 'hi');\n * bound('!');\n * // => 'hi fred!'\n *\n * // Bound with placeholders.\n * var bound = _.bind(greet, object, _, '!');\n * bound('hi');\n * // => 'hi fred!'\n */\n\n\n var bind = baseRest(function (func, thisArg, partials) {\n var bitmask = WRAP_BIND_FLAG;\n\n if (partials.length) {\n var holders = replaceHolders(partials, getHolder(bind));\n bitmask |= WRAP_PARTIAL_FLAG;\n }\n\n return createWrap(func, bitmask, thisArg, partials, holders);\n });\n /**\n * Creates a function that invokes the method at `object[key]` with `partials`\n * prepended to the arguments it receives.\n *\n * This method differs from `_.bind` by allowing bound functions to reference\n * methods that may be redefined or don't yet exist. See\n * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)\n * for more details.\n *\n * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic\n * builds, may be used as a placeholder for partially applied arguments.\n *\n * @static\n * @memberOf _\n * @since 0.10.0\n * @category Function\n * @param {Object} object The object to invoke the method on.\n * @param {string} key The key of the method.\n * @param {...*} [partials] The arguments to be partially applied.\n * @returns {Function} Returns the new bound function.\n * @example\n *\n * var object = {\n * 'user': 'fred',\n * 'greet': function(greeting, punctuation) {\n * return greeting + ' ' + this.user + punctuation;\n * }\n * };\n *\n * var bound = _.bindKey(object, 'greet', 'hi');\n * bound('!');\n * // => 'hi fred!'\n *\n * object.greet = function(greeting, punctuation) {\n * return greeting + 'ya ' + this.user + punctuation;\n * };\n *\n * bound('!');\n * // => 'hiya fred!'\n *\n * // Bound with placeholders.\n * var bound = _.bindKey(object, 'greet', _, '!');\n * bound('hi');\n * // => 'hiya fred!'\n */\n\n var bindKey = baseRest(function (object, key, partials) {\n var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;\n\n if (partials.length) {\n var holders = replaceHolders(partials, getHolder(bindKey));\n bitmask |= WRAP_PARTIAL_FLAG;\n }\n\n return createWrap(key, bitmask, object, partials, holders);\n });\n /**\n * Creates a function that accepts arguments of `func` and either invokes\n * `func` returning its result, if at least `arity` number of arguments have\n * been provided, or returns a function that accepts the remaining `func`\n * arguments, and so on. The arity of `func` may be specified if `func.length`\n * is not sufficient.\n *\n * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,\n * may be used as a placeholder for provided arguments.\n *\n * **Note:** This method doesn't set the \"length\" property of curried functions.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Function\n * @param {Function} func The function to curry.\n * @param {number} [arity=func.length] The arity of `func`.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Function} Returns the new curried function.\n * @example\n *\n * var abc = function(a, b, c) {\n * return [a, b, c];\n * };\n *\n * var curried = _.curry(abc);\n *\n * curried(1)(2)(3);\n * // => [1, 2, 3]\n *\n * curried(1, 2)(3);\n * // => [1, 2, 3]\n *\n * curried(1, 2, 3);\n * // => [1, 2, 3]\n *\n * // Curried with placeholders.\n * curried(1)(_, 3)(2);\n * // => [1, 2, 3]\n */\n\n function curry(func, arity, guard) {\n arity = guard ? undefined : arity;\n var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity);\n result.placeholder = curry.placeholder;\n return result;\n }\n /**\n * This method is like `_.curry` except that arguments are applied to `func`\n * in the manner of `_.partialRight` instead of `_.partial`.\n *\n * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic\n * builds, may be used as a placeholder for provided arguments.\n *\n * **Note:** This method doesn't set the \"length\" property of curried functions.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {Function} func The function to curry.\n * @param {number} [arity=func.length] The arity of `func`.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Function} Returns the new curried function.\n * @example\n *\n * var abc = function(a, b, c) {\n * return [a, b, c];\n * };\n *\n * var curried = _.curryRight(abc);\n *\n * curried(3)(2)(1);\n * // => [1, 2, 3]\n *\n * curried(2, 3)(1);\n * // => [1, 2, 3]\n *\n * curried(1, 2, 3);\n * // => [1, 2, 3]\n *\n * // Curried with placeholders.\n * curried(3)(1, _)(2);\n * // => [1, 2, 3]\n */\n\n\n function curryRight(func, arity, guard) {\n arity = guard ? undefined : arity;\n var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity);\n result.placeholder = curryRight.placeholder;\n return result;\n }\n /**\n * Creates a debounced function that delays invoking `func` until after `wait`\n * milliseconds have elapsed since the last time the debounced function was\n * invoked. The debounced function comes with a `cancel` method to cancel\n * delayed `func` invocations and a `flush` method to immediately invoke them.\n * Provide `options` to indicate whether `func` should be invoked on the\n * leading and/or trailing edge of the `wait` timeout. The `func` is invoked\n * with the last arguments provided to the debounced function. Subsequent\n * calls to the debounced function return the result of the last `func`\n * invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the debounced function\n * is invoked more than once during the `wait` timeout.\n *\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.debounce` and `_.throttle`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to debounce.\n * @param {number} [wait=0] The number of milliseconds to delay.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=false]\n * Specify invoking on the leading edge of the timeout.\n * @param {number} [options.maxWait]\n * The maximum time `func` is allowed to be delayed before it's invoked.\n * @param {boolean} [options.trailing=true]\n * Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new debounced function.\n * @example\n *\n * // Avoid costly calculations while the window size is in flux.\n * jQuery(window).on('resize', _.debounce(calculateLayout, 150));\n *\n * // Invoke `sendMail` when clicked, debouncing subsequent calls.\n * jQuery(element).on('click', _.debounce(sendMail, 300, {\n * 'leading': true,\n * 'trailing': false\n * }));\n *\n * // Ensure `batchLog` is invoked once after 1 second of debounced calls.\n * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });\n * var source = new EventSource('/stream');\n * jQuery(source).on('message', debounced);\n *\n * // Cancel the trailing debounced invocation.\n * jQuery(window).on('popstate', debounced.cancel);\n */\n\n\n function debounce(func, wait, options) {\n var lastArgs,\n lastThis,\n maxWait,\n result,\n timerId,\n lastCallTime,\n lastInvokeTime = 0,\n leading = false,\n maxing = false,\n trailing = true;\n\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n\n wait = toNumber(wait) || 0;\n\n if (isObject(options)) {\n leading = !!options.leading;\n maxing = 'maxWait' in options;\n maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;\n trailing = 'trailing' in options ? !!options.trailing : trailing;\n }\n\n function invokeFunc(time) {\n var args = lastArgs,\n thisArg = lastThis;\n lastArgs = lastThis = undefined;\n lastInvokeTime = time;\n result = func.apply(thisArg, args);\n return result;\n }\n\n function leadingEdge(time) {\n // Reset any `maxWait` timer.\n lastInvokeTime = time; // Start the timer for the trailing edge.\n\n timerId = setTimeout(timerExpired, wait); // Invoke the leading edge.\n\n return leading ? invokeFunc(time) : result;\n }\n\n function remainingWait(time) {\n var timeSinceLastCall = time - lastCallTime,\n timeSinceLastInvoke = time - lastInvokeTime,\n timeWaiting = wait - timeSinceLastCall;\n return maxing ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke) : timeWaiting;\n }\n\n function shouldInvoke(time) {\n var timeSinceLastCall = time - lastCallTime,\n timeSinceLastInvoke = time - lastInvokeTime; // Either this is the first call, activity has stopped and we're at the\n // trailing edge, the system time has gone backwards and we're treating\n // it as the trailing edge, or we've hit the `maxWait` limit.\n\n return lastCallTime === undefined || timeSinceLastCall >= wait || timeSinceLastCall < 0 || maxing && timeSinceLastInvoke >= maxWait;\n }\n\n function timerExpired() {\n var time = now();\n\n if (shouldInvoke(time)) {\n return trailingEdge(time);\n } // Restart the timer.\n\n\n timerId = setTimeout(timerExpired, remainingWait(time));\n }\n\n function trailingEdge(time) {\n timerId = undefined; // Only invoke if we have `lastArgs` which means `func` has been\n // debounced at least once.\n\n if (trailing && lastArgs) {\n return invokeFunc(time);\n }\n\n lastArgs = lastThis = undefined;\n return result;\n }\n\n function cancel() {\n if (timerId !== undefined) {\n clearTimeout(timerId);\n }\n\n lastInvokeTime = 0;\n lastArgs = lastCallTime = lastThis = timerId = undefined;\n }\n\n function flush() {\n return timerId === undefined ? result : trailingEdge(now());\n }\n\n function debounced() {\n var time = now(),\n isInvoking = shouldInvoke(time);\n lastArgs = arguments;\n lastThis = this;\n lastCallTime = time;\n\n if (isInvoking) {\n if (timerId === undefined) {\n return leadingEdge(lastCallTime);\n }\n\n if (maxing) {\n // Handle invocations in a tight loop.\n clearTimeout(timerId);\n timerId = setTimeout(timerExpired, wait);\n return invokeFunc(lastCallTime);\n }\n }\n\n if (timerId === undefined) {\n timerId = setTimeout(timerExpired, wait);\n }\n\n return result;\n }\n\n debounced.cancel = cancel;\n debounced.flush = flush;\n return debounced;\n }\n /**\n * Defers invoking the `func` until the current call stack has cleared. Any\n * additional arguments are provided to `func` when it's invoked.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to defer.\n * @param {...*} [args] The arguments to invoke `func` with.\n * @returns {number} Returns the timer id.\n * @example\n *\n * _.defer(function(text) {\n * console.log(text);\n * }, 'deferred');\n * // => Logs 'deferred' after one millisecond.\n */\n\n\n var defer = baseRest(function (func, args) {\n return baseDelay(func, 1, args);\n });\n /**\n * Invokes `func` after `wait` milliseconds. Any additional arguments are\n * provided to `func` when it's invoked.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to delay.\n * @param {number} wait The number of milliseconds to delay invocation.\n * @param {...*} [args] The arguments to invoke `func` with.\n * @returns {number} Returns the timer id.\n * @example\n *\n * _.delay(function(text) {\n * console.log(text);\n * }, 1000, 'later');\n * // => Logs 'later' after one second.\n */\n\n var delay = baseRest(function (func, wait, args) {\n return baseDelay(func, toNumber(wait) || 0, args);\n });\n /**\n * Creates a function that invokes `func` with arguments reversed.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Function\n * @param {Function} func The function to flip arguments for.\n * @returns {Function} Returns the new flipped function.\n * @example\n *\n * var flipped = _.flip(function() {\n * return _.toArray(arguments);\n * });\n *\n * flipped('a', 'b', 'c', 'd');\n * // => ['d', 'c', 'b', 'a']\n */\n\n function flip(func) {\n return createWrap(func, WRAP_FLIP_FLAG);\n }\n /**\n * Creates a function that memoizes the result of `func`. If `resolver` is\n * provided, it determines the cache key for storing the result based on the\n * arguments provided to the memoized function. By default, the first argument\n * provided to the memoized function is used as the map cache key. The `func`\n * is invoked with the `this` binding of the memoized function.\n *\n * **Note:** The cache is exposed as the `cache` property on the memoized\n * function. Its creation may be customized by replacing the `_.memoize.Cache`\n * constructor with one whose instances implement the\n * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)\n * method interface of `clear`, `delete`, `get`, `has`, and `set`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to have its output memoized.\n * @param {Function} [resolver] The function to resolve the cache key.\n * @returns {Function} Returns the new memoized function.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n * var other = { 'c': 3, 'd': 4 };\n *\n * var values = _.memoize(_.values);\n * values(object);\n * // => [1, 2]\n *\n * values(other);\n * // => [3, 4]\n *\n * object.a = 2;\n * values(object);\n * // => [1, 2]\n *\n * // Modify the result cache.\n * values.cache.set(object, ['a', 'b']);\n * values(object);\n * // => ['a', 'b']\n *\n * // Replace `_.memoize.Cache`.\n * _.memoize.Cache = WeakMap;\n */\n\n\n function memoize(func, resolver) {\n if (typeof func != 'function' || resolver != null && typeof resolver != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n\n var memoized = function memoized() {\n var args = arguments,\n key = resolver ? resolver.apply(this, args) : args[0],\n cache = memoized.cache;\n\n if (cache.has(key)) {\n return cache.get(key);\n }\n\n var result = func.apply(this, args);\n memoized.cache = cache.set(key, result) || cache;\n return result;\n };\n\n memoized.cache = new (memoize.Cache || MapCache)();\n return memoized;\n } // Expose `MapCache`.\n\n\n memoize.Cache = MapCache;\n /**\n * Creates a function that negates the result of the predicate `func`. The\n * `func` predicate is invoked with the `this` binding and arguments of the\n * created function.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {Function} predicate The predicate to negate.\n * @returns {Function} Returns the new negated function.\n * @example\n *\n * function isEven(n) {\n * return n % 2 == 0;\n * }\n *\n * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));\n * // => [1, 3, 5]\n */\n\n function negate(predicate) {\n if (typeof predicate != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n\n return function () {\n var args = arguments;\n\n switch (args.length) {\n case 0:\n return !predicate.call(this);\n\n case 1:\n return !predicate.call(this, args[0]);\n\n case 2:\n return !predicate.call(this, args[0], args[1]);\n\n case 3:\n return !predicate.call(this, args[0], args[1], args[2]);\n }\n\n return !predicate.apply(this, args);\n };\n }\n /**\n * Creates a function that is restricted to invoking `func` once. Repeat calls\n * to the function return the value of the first invocation. The `func` is\n * invoked with the `this` binding and arguments of the created function.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to restrict.\n * @returns {Function} Returns the new restricted function.\n * @example\n *\n * var initialize = _.once(createApplication);\n * initialize();\n * initialize();\n * // => `createApplication` is invoked once\n */\n\n\n function once(func) {\n return before(2, func);\n }\n /**\n * Creates a function that invokes `func` with its arguments transformed.\n *\n * @static\n * @since 4.0.0\n * @memberOf _\n * @category Function\n * @param {Function} func The function to wrap.\n * @param {...(Function|Function[])} [transforms=[_.identity]]\n * The argument transforms.\n * @returns {Function} Returns the new function.\n * @example\n *\n * function doubled(n) {\n * return n * 2;\n * }\n *\n * function square(n) {\n * return n * n;\n * }\n *\n * var func = _.overArgs(function(x, y) {\n * return [x, y];\n * }, [square, doubled]);\n *\n * func(9, 3);\n * // => [81, 6]\n *\n * func(10, 5);\n * // => [100, 10]\n */\n\n\n var overArgs = castRest(function (func, transforms) {\n transforms = transforms.length == 1 && isArray(transforms[0]) ? arrayMap(transforms[0], baseUnary(getIteratee())) : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee()));\n var funcsLength = transforms.length;\n return baseRest(function (args) {\n var index = -1,\n length = nativeMin(args.length, funcsLength);\n\n while (++index < length) {\n args[index] = transforms[index].call(this, args[index]);\n }\n\n return apply(func, this, args);\n });\n });\n /**\n * Creates a function that invokes `func` with `partials` prepended to the\n * arguments it receives. This method is like `_.bind` except it does **not**\n * alter the `this` binding.\n *\n * The `_.partial.placeholder` value, which defaults to `_` in monolithic\n * builds, may be used as a placeholder for partially applied arguments.\n *\n * **Note:** This method doesn't set the \"length\" property of partially\n * applied functions.\n *\n * @static\n * @memberOf _\n * @since 0.2.0\n * @category Function\n * @param {Function} func The function to partially apply arguments to.\n * @param {...*} [partials] The arguments to be partially applied.\n * @returns {Function} Returns the new partially applied function.\n * @example\n *\n * function greet(greeting, name) {\n * return greeting + ' ' + name;\n * }\n *\n * var sayHelloTo = _.partial(greet, 'hello');\n * sayHelloTo('fred');\n * // => 'hello fred'\n *\n * // Partially applied with placeholders.\n * var greetFred = _.partial(greet, _, 'fred');\n * greetFred('hi');\n * // => 'hi fred'\n */\n\n var partial = baseRest(function (func, partials) {\n var holders = replaceHolders(partials, getHolder(partial));\n return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders);\n });\n /**\n * This method is like `_.partial` except that partially applied arguments\n * are appended to the arguments it receives.\n *\n * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic\n * builds, may be used as a placeholder for partially applied arguments.\n *\n * **Note:** This method doesn't set the \"length\" property of partially\n * applied functions.\n *\n * @static\n * @memberOf _\n * @since 1.0.0\n * @category Function\n * @param {Function} func The function to partially apply arguments to.\n * @param {...*} [partials] The arguments to be partially applied.\n * @returns {Function} Returns the new partially applied function.\n * @example\n *\n * function greet(greeting, name) {\n * return greeting + ' ' + name;\n * }\n *\n * var greetFred = _.partialRight(greet, 'fred');\n * greetFred('hi');\n * // => 'hi fred'\n *\n * // Partially applied with placeholders.\n * var sayHelloTo = _.partialRight(greet, 'hello', _);\n * sayHelloTo('fred');\n * // => 'hello fred'\n */\n\n var partialRight = baseRest(function (func, partials) {\n var holders = replaceHolders(partials, getHolder(partialRight));\n return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders);\n });\n /**\n * Creates a function that invokes `func` with arguments arranged according\n * to the specified `indexes` where the argument value at the first index is\n * provided as the first argument, the argument value at the second index is\n * provided as the second argument, and so on.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {Function} func The function to rearrange arguments for.\n * @param {...(number|number[])} indexes The arranged argument indexes.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var rearged = _.rearg(function(a, b, c) {\n * return [a, b, c];\n * }, [2, 0, 1]);\n *\n * rearged('b', 'c', 'a')\n * // => ['a', 'b', 'c']\n */\n\n var rearg = flatRest(function (func, indexes) {\n return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes);\n });\n /**\n * Creates a function that invokes `func` with the `this` binding of the\n * created function and arguments from `start` and beyond provided as\n * an array.\n *\n * **Note:** This method is based on the\n * [rest parameter](https://mdn.io/rest_parameters).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Function\n * @param {Function} func The function to apply a rest parameter to.\n * @param {number} [start=func.length-1] The start position of the rest parameter.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var say = _.rest(function(what, names) {\n * return what + ' ' + _.initial(names).join(', ') +\n * (_.size(names) > 1 ? ', & ' : '') + _.last(names);\n * });\n *\n * say('hello', 'fred', 'barney', 'pebbles');\n * // => 'hello fred, barney, & pebbles'\n */\n\n function rest(func, start) {\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n\n start = start === undefined ? start : toInteger(start);\n return baseRest(func, start);\n }\n /**\n * Creates a function that invokes `func` with the `this` binding of the\n * create function and an array of arguments much like\n * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).\n *\n * **Note:** This method is based on the\n * [spread operator](https://mdn.io/spread_operator).\n *\n * @static\n * @memberOf _\n * @since 3.2.0\n * @category Function\n * @param {Function} func The function to spread arguments over.\n * @param {number} [start=0] The start position of the spread.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var say = _.spread(function(who, what) {\n * return who + ' says ' + what;\n * });\n *\n * say(['fred', 'hello']);\n * // => 'fred says hello'\n *\n * var numbers = Promise.all([\n * Promise.resolve(40),\n * Promise.resolve(36)\n * ]);\n *\n * numbers.then(_.spread(function(x, y) {\n * return x + y;\n * }));\n * // => a Promise of 76\n */\n\n\n function spread(func, start) {\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n\n start = start == null ? 0 : nativeMax(toInteger(start), 0);\n return baseRest(function (args) {\n var array = args[start],\n otherArgs = castSlice(args, 0, start);\n\n if (array) {\n arrayPush(otherArgs, array);\n }\n\n return apply(func, this, otherArgs);\n });\n }\n /**\n * Creates a throttled function that only invokes `func` at most once per\n * every `wait` milliseconds. The throttled function comes with a `cancel`\n * method to cancel delayed `func` invocations and a `flush` method to\n * immediately invoke them. Provide `options` to indicate whether `func`\n * should be invoked on the leading and/or trailing edge of the `wait`\n * timeout. The `func` is invoked with the last arguments provided to the\n * throttled function. Subsequent calls to the throttled function return the\n * result of the last `func` invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the throttled function\n * is invoked more than once during the `wait` timeout.\n *\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.throttle` and `_.debounce`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to throttle.\n * @param {number} [wait=0] The number of milliseconds to throttle invocations to.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=true]\n * Specify invoking on the leading edge of the timeout.\n * @param {boolean} [options.trailing=true]\n * Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new throttled function.\n * @example\n *\n * // Avoid excessively updating the position while scrolling.\n * jQuery(window).on('scroll', _.throttle(updatePosition, 100));\n *\n * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.\n * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });\n * jQuery(element).on('click', throttled);\n *\n * // Cancel the trailing throttled invocation.\n * jQuery(window).on('popstate', throttled.cancel);\n */\n\n\n function throttle(func, wait, options) {\n var leading = true,\n trailing = true;\n\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n\n if (isObject(options)) {\n leading = 'leading' in options ? !!options.leading : leading;\n trailing = 'trailing' in options ? !!options.trailing : trailing;\n }\n\n return debounce(func, wait, {\n 'leading': leading,\n 'maxWait': wait,\n 'trailing': trailing\n });\n }\n /**\n * Creates a function that accepts up to one argument, ignoring any\n * additional arguments.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Function\n * @param {Function} func The function to cap arguments for.\n * @returns {Function} Returns the new capped function.\n * @example\n *\n * _.map(['6', '8', '10'], _.unary(parseInt));\n * // => [6, 8, 10]\n */\n\n\n function unary(func) {\n return ary(func, 1);\n }\n /**\n * Creates a function that provides `value` to `wrapper` as its first\n * argument. Any additional arguments provided to the function are appended\n * to those provided to the `wrapper`. The wrapper is invoked with the `this`\n * binding of the created function.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {*} value The value to wrap.\n * @param {Function} [wrapper=identity] The wrapper function.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var p = _.wrap(_.escape, function(func, text) {\n * return '' + func(text) + '
';\n * });\n *\n * p('fred, barney, & pebbles');\n * // => 'fred, barney, & pebbles
'\n */\n\n\n function wrap(value, wrapper) {\n return partial(castFunction(wrapper), value);\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\n\n function castArray() {\n if (!arguments.length) {\n return [];\n }\n\n var value = arguments[0];\n return isArray(value) ? value : [value];\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\n\n function clone(value) {\n return baseClone(value, CLONE_SYMBOLS_FLAG);\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\n\n function cloneWith(value, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);\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\n\n function cloneDeep(value) {\n return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);\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\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 * 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\n\n function conformsTo(object, source) {\n return source == null || baseConformsTo(object, source, keys(source));\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\n\n function eq(value, other) {\n return value === other || value !== value && other !== other;\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\n\n var gt = createRelationalOperation(baseGt);\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\n var gte = createRelationalOperation(function (value, other) {\n return value >= other;\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\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 * 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\n var isArray = Array.isArray;\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\n var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;\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\n function isArrayLike(value) {\n return value != null && isLength(value.length) && !isFunction(value);\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\n\n function isArrayLikeObject(value) {\n return isObjectLike(value) && isArrayLike(value);\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\n\n function isBoolean(value) {\n return value === true || value === false || isObjectLike(value) && baseGetTag(value) == boolTag;\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\n\n var isBuffer = nativeIsBuffer || stubFalse;\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\n var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;\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\n function isElement(value) {\n return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);\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\n\n function isEmpty(value) {\n if (value == null) {\n return true;\n }\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\n var tag = getTag(value);\n\n if (tag == mapTag || tag == setTag) {\n return !value.size;\n }\n\n if (isPrototype(value)) {\n return !baseKeys(value).length;\n }\n\n for (var key in value) {\n if (hasOwnProperty.call(value, key)) {\n return false;\n }\n }\n\n return true;\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\n\n function isEqual(value, other) {\n return baseIsEqual(value, other);\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\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 * 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\n\n function isError(value) {\n if (!isObjectLike(value)) {\n return false;\n }\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 * 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\n\n function isFinite(value) {\n return typeof value == 'number' && nativeIsFinite(value);\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\n\n function isFunction(value) {\n if (!isObject(value)) {\n return false;\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\n\n var tag = baseGetTag(value);\n return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;\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\n\n function isInteger(value) {\n return typeof value == 'number' && value == toInteger(value);\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\n\n function isLength(value) {\n return typeof value == 'number' && value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;\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\n\n function isObject(value) {\n var type = _typeof(value);\n\n return value != null && (type == 'object' || type == 'function');\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\n\n function isObjectLike(value) {\n return value != null && _typeof(value) == 'object';\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\n\n var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;\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\n function isMatch(object, source) {\n return object === source || baseIsMatch(object, source, getMatchData(source));\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\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 * 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\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 * 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\n\n function isNative(value) {\n if (isMaskable(value)) {\n throw new Error(CORE_ERROR_TEXT);\n }\n\n return baseIsNative(value);\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\n\n function isNull(value) {\n return value === null;\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\n\n function isNil(value) {\n return value == null;\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\n\n function isNumber(value) {\n return typeof value == 'number' || isObjectLike(value) && baseGetTag(value) == numberTag;\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\n\n function isPlainObject(value) {\n if (!isObjectLike(value) || baseGetTag(value) != objectTag) {\n return false;\n }\n\n var proto = getPrototype(value);\n\n if (proto === null) {\n return true;\n }\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 * 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\n\n var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;\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\n function isSafeInteger(value) {\n return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;\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\n\n var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;\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\n function isString(value) {\n return typeof value == 'string' || !isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag;\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\n\n function isSymbol(value) {\n return _typeof(value) == 'symbol' || isObjectLike(value) && baseGetTag(value) == symbolTag;\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\n\n var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;\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\n function isUndefined(value) {\n return value === undefined;\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\n\n function isWeakMap(value) {\n return isObjectLike(value) && getTag(value) == weakMapTag;\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\n\n function isWeakSet(value) {\n return isObjectLike(value) && baseGetTag(value) == weakSetTag;\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\n\n var lt = createRelationalOperation(baseLt);\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\n var lte = createRelationalOperation(function (value, other) {\n return value <= other;\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\n function toArray(value) {\n if (!value) {\n return [];\n }\n\n if (isArrayLike(value)) {\n return isString(value) ? stringToArray(value) : copyArray(value);\n }\n\n if (symIterator && value[symIterator]) {\n return iteratorToArray(value[symIterator]());\n }\n\n var tag = getTag(value),\n func = tag == mapTag ? mapToArray : tag == setTag ? setToArray : values;\n return func(value);\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\n\n function toFinite(value) {\n if (!value) {\n return value === 0 ? value : 0;\n }\n\n value = toNumber(value);\n\n if (value === INFINITY || value === -INFINITY) {\n var sign = value < 0 ? -1 : 1;\n return sign * MAX_INTEGER;\n }\n\n return value === value ? value : 0;\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\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 * 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\n\n function toLength(value) {\n return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;\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\n\n function toNumber(value) {\n if (typeof value == 'number') {\n return value;\n }\n\n if (isSymbol(value)) {\n return NAN;\n }\n\n if (isObject(value)) {\n var other = typeof value.valueOf == 'function' ? value.valueOf() : value;\n value = isObject(other) ? other + '' : other;\n }\n\n if (typeof value != 'string') {\n return value === 0 ? value : +value;\n }\n\n value = value.replace(reTrim, '');\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 * 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\n\n function toPlainObject(value) {\n return copyObject(value, keysIn(value));\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\n\n function toSafeInteger(value) {\n return value ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER) : value === 0 ? value : 0;\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\n\n function toString(value) {\n return value == null ? '' : baseToString(value);\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\n\n var assign = createAssigner(function (object, source) {\n if (isPrototype(source) || isArrayLike(source)) {\n copyObject(source, keys(source), object);\n return;\n }\n\n for (var key in source) {\n if (hasOwnProperty.call(source, key)) {\n assignValue(object, key, source[key]);\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\n var assignIn = createAssigner(function (object, source) {\n copyObject(source, keysIn(source), object);\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\n var assignInWith = createAssigner(function (object, source, srcIndex, customizer) {\n copyObject(source, keysIn(source), object, customizer);\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\n var assignWith = createAssigner(function (object, source, srcIndex, customizer) {\n copyObject(source, keys(source), object, customizer);\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\n var at = flatRest(baseAt);\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\n function create(prototype, properties) {\n var result = baseCreate(prototype);\n return properties == null ? result : baseAssign(result, properties);\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\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\n if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n length = 1;\n }\n\n while (++index < length) {\n var source = sources[index];\n var props = keysIn(source);\n var propsIndex = -1;\n var propsLength = props.length;\n\n while (++propsIndex < propsLength) {\n var key = props[propsIndex];\n var value = object[key];\n\n if (value === undefined || eq(value, objectProto[key]) && !hasOwnProperty.call(object, key)) {\n object[key] = source[key];\n }\n }\n }\n\n return object;\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\n var defaultsDeep = baseRest(function (args) {\n args.push(undefined, customDefaultsMerge);\n return apply(mergeWith, undefined, args);\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\n function findKey(object, predicate) {\n return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);\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\n\n function findLastKey(object, predicate) {\n return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);\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\n\n function forIn(object, iteratee) {\n return object == null ? object : baseFor(object, getIteratee(iteratee, 3), keysIn);\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\n\n function forInRight(object, iteratee) {\n return object == null ? object : baseForRight(object, getIteratee(iteratee, 3), keysIn);\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\n\n function forOwn(object, iteratee) {\n return object && baseForOwn(object, getIteratee(iteratee, 3));\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\n\n function forOwnRight(object, iteratee) {\n return object && baseForOwnRight(object, getIteratee(iteratee, 3));\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\n\n function functions(object) {\n return object == null ? [] : baseFunctions(object, keys(object));\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\n\n function functionsIn(object) {\n return object == null ? [] : baseFunctions(object, keysIn(object));\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\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 * 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\n\n function has(object, path) {\n return object != null && hasPath(object, path, baseHas);\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\n\n function hasIn(object, path) {\n return object != null && hasPath(object, path, baseHasIn);\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\n\n var invert = createInverter(function (result, value, key) {\n if (value != null && typeof value.toString != 'function') {\n value = nativeObjectToString.call(value);\n }\n\n result[value] = key;\n }, constant(identity));\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\n var invertBy = createInverter(function (result, value, key) {\n if (value != null && typeof value.toString != 'function') {\n value = nativeObjectToString.call(value);\n }\n\n if (hasOwnProperty.call(result, value)) {\n result[value].push(key);\n } else {\n result[value] = [key];\n }\n }, getIteratee);\n /**\n * 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\n var invoke = baseRest(baseInvoke);\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\n function keys(object) {\n return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);\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\n\n function keysIn(object) {\n return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);\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\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 * 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\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 * 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\n\n var merge = createAssigner(function (object, source, srcIndex) {\n baseMerge(object, source, srcIndex);\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\n var mergeWith = createAssigner(function (object, source, srcIndex, customizer) {\n baseMerge(object, source, srcIndex, customizer);\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\n var omit = flatRest(function (object, paths) {\n var result = {};\n\n if (object == null) {\n return result;\n }\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\n if (isDeep) {\n result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);\n }\n\n var length = paths.length;\n\n while (length--) {\n baseUnset(result, paths[length]);\n }\n\n return result;\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\n function omitBy(object, predicate) {\n return pickBy(object, negate(getIteratee(predicate)));\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\n\n var pick = flatRest(function (object, paths) {\n return object == null ? {} : basePick(object, paths);\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\n function pickBy(object, predicate) {\n if (object == null) {\n return {};\n }\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 * 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\n\n function result(object, path, defaultValue) {\n path = castPath(path, object);\n var index = -1,\n length = path.length; // Ensure the loop is entered when path is empty.\n\n if (!length) {\n length = 1;\n object = undefined;\n }\n\n while (++index < length) {\n var value = object == null ? undefined : object[toKey(path[index])];\n\n if (value === undefined) {\n index = length;\n value = defaultValue;\n }\n\n object = isFunction(value) ? value.call(object) : value;\n }\n\n return object;\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\n\n function set(object, path, value) {\n return object == null ? object : baseSet(object, path, value);\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\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 * 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\n\n var toPairs = createToPairs(keys);\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\n var toPairsIn = createToPairs(keysIn);\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\n function transform(object, iteratee, accumulator) {\n var isArr = isArray(object),\n isArrLike = isArr || isBuffer(object) || isTypedArray(object);\n iteratee = getIteratee(iteratee, 4);\n\n if (accumulator == null) {\n var Ctor = object && object.constructor;\n\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\n (isArrLike ? arrayEach : baseForOwn)(object, function (value, index, object) {\n return iteratee(accumulator, value, index, object);\n });\n return accumulator;\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\n\n function unset(object, path) {\n return object == null ? true : baseUnset(object, path);\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\n\n function update(object, path, updater) {\n return object == null ? object : baseUpdate(object, path, castFunction(updater));\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\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 * 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\n\n function values(object) {\n return object == null ? [] : baseValues(object, keys(object));\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\n\n function valuesIn(object) {\n return object == null ? [] : baseValues(object, keysIn(object));\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\n\n function clamp(number, lower, upper) {\n if (upper === undefined) {\n upper = lower;\n lower = undefined;\n }\n\n if (upper !== undefined) {\n upper = toNumber(upper);\n upper = upper === upper ? upper : 0;\n }\n\n if (lower !== undefined) {\n lower = toNumber(lower);\n lower = lower === lower ? lower : 0;\n }\n\n return baseClamp(toNumber(number), lower, upper);\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\n\n function inRange(number, start, end) {\n start = toFinite(start);\n\n if (end === undefined) {\n end = start;\n start = 0;\n } else {\n end = toFinite(end);\n }\n\n number = toNumber(number);\n return baseInRange(number, start, end);\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\n\n function random(lower, upper, floating) {\n if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {\n upper = floating = undefined;\n }\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\n if (lower === undefined && upper === undefined) {\n lower = 0;\n upper = 1;\n } else {\n lower = toFinite(lower);\n\n if (upper === undefined) {\n upper = lower;\n lower = 0;\n } else {\n upper = toFinite(upper);\n }\n }\n\n if (lower > upper) {\n var temp = lower;\n lower = upper;\n upper = temp;\n }\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\n return baseRandom(lower, upper);\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\n\n var camelCase = createCompounder(function (result, word, index) {\n word = word.toLowerCase();\n return result + (index ? capitalize(word) : word);\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\n function capitalize(string) {\n return upperFirst(toString(string).toLowerCase());\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\n\n function deburr(string) {\n string = toString(string);\n return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');\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\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 * 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\n\n function escape(string) {\n string = toString(string);\n return string && reHasUnescapedHtml.test(string) ? string.replace(reUnescapedHtml, escapeHtmlChar) : string;\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\n\n function escapeRegExp(string) {\n string = toString(string);\n return string && reHasRegExpChar.test(string) ? string.replace(reRegExpChar, '\\\\$&') : string;\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\n\n var kebabCase = createCompounder(function (result, word, index) {\n return result + (index ? '-' : '') + word.toLowerCase();\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\n var lowerCase = createCompounder(function (result, word, index) {\n return result + (index ? ' ' : '') + word.toLowerCase();\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\n var lowerFirst = createCaseFirst('toLowerCase');\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\n function pad(string, length, chars) {\n string = toString(string);\n length = toInteger(length);\n var strLength = length ? stringSize(string) : 0;\n\n if (!length || strLength >= length) {\n return string;\n }\n\n var mid = (length - strLength) / 2;\n return createPadding(nativeFloor(mid), chars) + string + createPadding(nativeCeil(mid), chars);\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\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 * 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\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 * 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\n\n function parseInt(string, radix, guard) {\n if (guard || radix == null) {\n radix = 0;\n } else if (radix) {\n radix = +radix;\n }\n\n return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);\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\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\n return baseRepeat(toString(string), 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\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 * 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\n\n var snakeCase = createCompounder(function (result, word, index) {\n return result + (index ? '_' : '') + word.toLowerCase();\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\n function split(string, separator, limit) {\n if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {\n separator = limit = undefined;\n }\n\n limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;\n\n if (!limit) {\n return [];\n }\n\n string = toString(string);\n\n if (string && (typeof separator == 'string' || separator != null && !isRegExp(separator))) {\n separator = baseToString(separator);\n\n if (!separator && hasUnicode(string)) {\n return castSlice(stringToArray(string), 0, limit);\n }\n }\n\n return string.split(separator, limit);\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\n\n var startCase = createCompounder(function (result, word, index) {\n return result + (index ? ' ' : '') + upperFirst(word);\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\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 * 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 if (val === '') return true;\n if (val === 'false') return false;\n if (val === 'true') return true;\n return val;\n}\n\nif (DOCUMENT && typeof DOCUMENT.querySelector === 'function') {\n var attrs = [['data-family-prefix', 'familyPrefix'], ['data-replacement-class', 'replacementClass'], ['data-auto-replace-svg', 'autoReplaceSvg'], ['data-auto-add-css', 'autoAddCss'], ['data-auto-a11y', 'autoA11y'], ['data-search-pseudo-elements', 'searchPseudoElements'], ['data-observe-mutations', 'observeMutations'], ['data-mutate-approach', 'mutateApproach'], ['data-keep-original-source', 'keepOriginalSource'], ['data-measure-performance', 'measurePerformance'], ['data-show-missing-icons', 'showMissingIcons']];\n attrs.forEach(function (_ref) {\n var _ref2 = _slicedToArray(_ref, 2),\n attr = _ref2[0],\n key = _ref2[1];\n\n var val = coerce(getAttrConfig(attr));\n\n if (val !== undefined && val !== null) {\n initial[key] = val;\n }\n });\n}\n\nvar _default = {\n familyPrefix: DEFAULT_FAMILY_PREFIX,\n replacementClass: DEFAULT_REPLACEMENT_CLASS,\n autoReplaceSvg: true,\n autoAddCss: true,\n autoA11y: true,\n searchPseudoElements: false,\n observeMutations: true,\n mutateApproach: 'async',\n keepOriginalSource: true,\n measurePerformance: false,\n showMissingIcons: true\n};\n\nvar _config = _objectSpread({}, _default, initial);\n\nif (!_config.autoReplaceSvg) _config.observeMutations = false;\n\nvar config = _objectSpread({}, _config);\n\nWINDOW.FontAwesomeConfig = config;\nvar w = WINDOW || {};\nif (!w[NAMESPACE_IDENTIFIER]) w[NAMESPACE_IDENTIFIER] = {};\nif (!w[NAMESPACE_IDENTIFIER].styles) w[NAMESPACE_IDENTIFIER].styles = {};\nif (!w[NAMESPACE_IDENTIFIER].hooks) w[NAMESPACE_IDENTIFIER].hooks = {};\nif (!w[NAMESPACE_IDENTIFIER].shims) w[NAMESPACE_IDENTIFIER].shims = [];\nvar namespace = w[NAMESPACE_IDENTIFIER];\nvar functions = [];\n\nvar listener = function listener() {\n DOCUMENT.removeEventListener('DOMContentLoaded', listener);\n loaded = 1;\n functions.map(function (fn) {\n return fn();\n });\n};\n\nvar loaded = false;\n\nif (IS_DOM) {\n loaded = (DOCUMENT.documentElement.doScroll ? /^loaded|^c/ : /^loaded|^i|^c/).test(DOCUMENT.readyState);\n if (!loaded) DOCUMENT.addEventListener('DOMContentLoaded', listener);\n}\n\nfunction domready(fn) {\n if (!IS_DOM) return;\n loaded ? setTimeout(fn, 0) : functions.push(fn);\n}\n\nvar PENDING = 'pending';\nvar SETTLED = 'settled';\nvar FULFILLED = 'fulfilled';\nvar REJECTED = 'rejected';\n\nvar NOOP = function NOOP() {};\n\nvar isNode = typeof global !== 'undefined' && typeof global.process !== 'undefined' && typeof global.process.emit === 'function';\nvar asyncSetTimer = typeof setImmediate === 'undefined' ? setTimeout : setImmediate;\nvar asyncQueue = [];\nvar asyncTimer;\n\nfunction asyncFlush() {\n // run promise callbacks\n for (var i = 0; i < asyncQueue.length; i++) {\n asyncQueue[i][0](asyncQueue[i][1]);\n } // reset async asyncQueue\n\n\n asyncQueue = [];\n asyncTimer = false;\n}\n\nfunction asyncCall(callback, arg) {\n asyncQueue.push([callback, arg]);\n\n if (!asyncTimer) {\n asyncTimer = true;\n asyncSetTimer(asyncFlush, 0);\n }\n}\n\nfunction invokeResolver(resolver, promise) {\n function resolvePromise(value) {\n resolve(promise, value);\n }\n\n function rejectPromise(reason) {\n reject(promise, reason);\n }\n\n try {\n resolver(resolvePromise, rejectPromise);\n } catch (e) {\n rejectPromise(e);\n }\n}\n\nfunction invokeCallback(subscriber) {\n var owner = subscriber.owner;\n var settled = owner._state;\n var value = owner._data;\n var callback = subscriber[settled];\n var promise = subscriber.then;\n\n if (typeof callback === 'function') {\n settled = FULFILLED;\n\n try {\n value = callback(value);\n } catch (e) {\n reject(promise, e);\n }\n }\n\n if (!handleThenable(promise, value)) {\n if (settled === FULFILLED) {\n resolve(promise, value);\n }\n\n if (settled === REJECTED) {\n reject(promise, value);\n }\n }\n}\n\nfunction handleThenable(promise, value) {\n var resolved;\n\n try {\n if (promise === value) {\n throw new TypeError('A promises callback cannot return that same promise.');\n }\n\n if (value && (typeof value === 'function' || _typeof(value) === 'object')) {\n // then should be retrieved only once\n var then = value.then;\n\n if (typeof then === 'function') {\n then.call(value, function (val) {\n if (!resolved) {\n resolved = true;\n\n if (value === val) {\n fulfill(promise, val);\n } else {\n resolve(promise, val);\n }\n }\n }, function (reason) {\n if (!resolved) {\n resolved = true;\n reject(promise, reason);\n }\n });\n return true;\n }\n }\n } catch (e) {\n if (!resolved) {\n reject(promise, e);\n }\n\n return true;\n }\n\n return false;\n}\n\nfunction resolve(promise, value) {\n if (promise === value || !handleThenable(promise, value)) {\n fulfill(promise, value);\n }\n}\n\nfunction fulfill(promise, value) {\n if (promise._state === PENDING) {\n promise._state = SETTLED;\n promise._data = value;\n asyncCall(publishFulfillment, promise);\n }\n}\n\nfunction reject(promise, reason) {\n if (promise._state === PENDING) {\n promise._state = SETTLED;\n promise._data = reason;\n asyncCall(publishRejection, promise);\n }\n}\n\nfunction publish(promise) {\n promise._then = promise._then.forEach(invokeCallback);\n}\n\nfunction publishFulfillment(promise) {\n promise._state = FULFILLED;\n publish(promise);\n}\n\nfunction publishRejection(promise) {\n promise._state = REJECTED;\n publish(promise);\n\n if (!promise._handled && isNode) {\n global.process.emit('unhandledRejection', promise._data, promise);\n }\n}\n\nfunction notifyRejectionHandled(promise) {\n global.process.emit('rejectionHandled', promise);\n}\n/**\n * @class\n */\n\n\nfunction P(resolver) {\n if (typeof resolver !== 'function') {\n throw new TypeError('Promise resolver ' + resolver + ' is not a function');\n }\n\n if (this instanceof P === false) {\n throw new TypeError('Failed to construct \\'Promise\\': Please use the \\'new\\' operator, this object constructor cannot be called as a function.');\n }\n\n this._then = [];\n invokeResolver(resolver, this);\n}\n\nP.prototype = {\n constructor: P,\n _state: PENDING,\n _then: null,\n _data: undefined,\n _handled: false,\n then: function then(onFulfillment, onRejection) {\n var subscriber = {\n owner: this,\n then: new this.constructor(NOOP),\n fulfilled: onFulfillment,\n rejected: onRejection\n };\n\n if ((onRejection || onFulfillment) && !this._handled) {\n this._handled = true;\n\n if (this._state === REJECTED && isNode) {\n asyncCall(notifyRejectionHandled, this);\n }\n }\n\n if (this._state === FULFILLED || this._state === REJECTED) {\n // already resolved, call callback async\n asyncCall(invokeCallback, subscriber);\n } else {\n // subscribe\n this._then.push(subscriber);\n }\n\n return subscriber.then;\n },\n catch: function _catch(onRejection) {\n return this.then(null, onRejection);\n }\n};\n\nP.all = function (promises) {\n if (!Array.isArray(promises)) {\n throw new TypeError('You must pass an array to Promise.all().');\n }\n\n return new P(function (resolve, reject) {\n var results = [];\n var remaining = 0;\n\n function resolver(index) {\n remaining++;\n return function (value) {\n results[index] = value;\n\n if (! --remaining) {\n resolve(results);\n }\n };\n }\n\n for (var i = 0, promise; i < promises.length; i++) {\n promise = promises[i];\n\n if (promise && typeof promise.then === 'function') {\n promise.then(resolver(i), reject);\n } else {\n results[i] = promise;\n }\n }\n\n if (!remaining) {\n resolve(results);\n }\n });\n};\n\nP.race = function (promises) {\n if (!Array.isArray(promises)) {\n throw new TypeError('You must pass an array to Promise.race().');\n }\n\n return new P(function (resolve, reject) {\n for (var i = 0, promise; i < promises.length; i++) {\n promise = promises[i];\n\n if (promise && typeof promise.then === 'function') {\n promise.then(resolve, reject);\n } else {\n resolve(promise);\n }\n }\n });\n};\n\nP.resolve = function (value) {\n if (value && _typeof(value) === 'object' && value.constructor === P) {\n return value;\n }\n\n return new P(function (resolve) {\n resolve(value);\n });\n};\n\nP.reject = function (reason) {\n return new P(function (resolve, reject) {\n reject(reason);\n });\n};\n\nvar picked = typeof Promise === 'function' ? Promise : P;\nvar d = UNITS_IN_GRID;\nvar meaninglessTransform = {\n size: 16,\n x: 0,\n y: 0,\n rotate: 0,\n flipX: false,\n flipY: false\n};\n\nfunction isReserved(name) {\n return ~RESERVED_CLASSES.indexOf(name);\n}\n\nfunction insertCss(css) {\n if (!css || !IS_DOM) {\n return;\n }\n\n var style = DOCUMENT.createElement('style');\n style.setAttribute('type', 'text/css');\n style.innerHTML = css;\n var headChildren = DOCUMENT.head.childNodes;\n var beforeChild = null;\n\n for (var i = headChildren.length - 1; i > -1; i--) {\n var child = headChildren[i];\n var tagName = (child.tagName || '').toUpperCase();\n\n if (['STYLE', 'LINK'].indexOf(tagName) > -1) {\n beforeChild = child;\n }\n }\n\n DOCUMENT.head.insertBefore(style, beforeChild);\n return css;\n}\n\nvar idPool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';\n\nfunction nextUniqueId() {\n var size = 12;\n var id = '';\n\n while (size-- > 0) {\n id += idPool[Math.random() * 62 | 0];\n }\n\n return id;\n}\n\nfunction toArray(obj) {\n var array = [];\n\n for (var i = (obj || []).length >>> 0; i--;) {\n array[i] = obj[i];\n }\n\n return array;\n}\n\nfunction classArray(node) {\n if (node.classList) {\n return toArray(node.classList);\n } else {\n return (node.getAttribute('class') || '').split(' ').filter(function (i) {\n return i;\n });\n }\n}\n\nfunction getIconName(familyPrefix, cls) {\n var parts = cls.split('-');\n var prefix = parts[0];\n var iconName = parts.slice(1).join('-');\n\n if (prefix === familyPrefix && iconName !== '' && !isReserved(iconName)) {\n return iconName;\n } else {\n return null;\n }\n}\n\nfunction htmlEscape(str) {\n return \"\".concat(str).replace(/&/g, '&').replace(/\"/g, '"').replace(/'/g, ''').replace(//g, '>');\n}\n\nfunction joinAttributes(attributes) {\n return Object.keys(attributes || {}).reduce(function (acc, attributeName) {\n return acc + \"\".concat(attributeName, \"=\\\"\").concat(htmlEscape(attributes[attributeName]), \"\\\" \");\n }, '').trim();\n}\n\nfunction joinStyles(styles) {\n return Object.keys(styles || {}).reduce(function (acc, styleName) {\n return acc + \"\".concat(styleName, \": \").concat(styles[styleName], \";\");\n }, '');\n}\n\nfunction transformIsMeaningful(transform) {\n return transform.size !== meaninglessTransform.size || transform.x !== meaninglessTransform.x || transform.y !== meaninglessTransform.y || transform.rotate !== meaninglessTransform.rotate || transform.flipX || transform.flipY;\n}\n\nfunction transformForSvg(_ref) {\n var transform = _ref.transform,\n containerWidth = _ref.containerWidth,\n iconWidth = _ref.iconWidth;\n var outer = {\n transform: \"translate(\".concat(containerWidth / 2, \" 256)\")\n };\n var innerTranslate = \"translate(\".concat(transform.x * 32, \", \").concat(transform.y * 32, \") \");\n var innerScale = \"scale(\".concat(transform.size / 16 * (transform.flipX ? -1 : 1), \", \").concat(transform.size / 16 * (transform.flipY ? -1 : 1), \") \");\n var innerRotate = \"rotate(\".concat(transform.rotate, \" 0 0)\");\n var inner = {\n transform: \"\".concat(innerTranslate, \" \").concat(innerScale, \" \").concat(innerRotate)\n };\n var path = {\n transform: \"translate(\".concat(iconWidth / 2 * -1, \" -256)\")\n };\n return {\n outer: outer,\n inner: inner,\n path: path\n };\n}\n\nfunction transformForCss(_ref2) {\n var transform = _ref2.transform,\n _ref2$width = _ref2.width,\n width = _ref2$width === void 0 ? UNITS_IN_GRID : _ref2$width,\n _ref2$height = _ref2.height,\n height = _ref2$height === void 0 ? UNITS_IN_GRID : _ref2$height,\n _ref2$startCentered = _ref2.startCentered,\n startCentered = _ref2$startCentered === void 0 ? false : _ref2$startCentered;\n var val = '';\n\n if (startCentered && IS_IE) {\n val += \"translate(\".concat(transform.x / d - width / 2, \"em, \").concat(transform.y / d - height / 2, \"em) \");\n } else if (startCentered) {\n val += \"translate(calc(-50% + \".concat(transform.x / d, \"em), calc(-50% + \").concat(transform.y / d, \"em)) \");\n } else {\n val += \"translate(\".concat(transform.x / d, \"em, \").concat(transform.y / d, \"em) \");\n }\n\n val += \"scale(\".concat(transform.size / d * (transform.flipX ? -1 : 1), \", \").concat(transform.size / d * (transform.flipY ? -1 : 1), \") \");\n val += \"rotate(\".concat(transform.rotate, \"deg) \");\n return val;\n}\n\nvar ALL_SPACE = {\n x: 0,\n y: 0,\n width: '100%',\n height: '100%'\n};\n\nfunction fillBlack(abstract) {\n var force = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;\n\n if (abstract.attributes && (abstract.attributes.fill || force)) {\n abstract.attributes.fill = 'black';\n }\n\n return abstract;\n}\n\nfunction deGroup(abstract) {\n if (abstract.tag === 'g') {\n return abstract.children;\n } else {\n return [abstract];\n }\n}\n\nfunction makeIconMasking(_ref) {\n var children = _ref.children,\n attributes = _ref.attributes,\n main = _ref.main,\n mask = _ref.mask,\n explicitMaskId = _ref.maskId,\n transform = _ref.transform;\n var mainWidth = main.width,\n mainPath = main.icon;\n var maskWidth = mask.width,\n maskPath = mask.icon;\n var trans = transformForSvg({\n transform: transform,\n containerWidth: maskWidth,\n iconWidth: mainWidth\n });\n var maskRect = {\n tag: 'rect',\n attributes: _objectSpread({}, ALL_SPACE, {\n fill: 'white'\n })\n };\n var maskInnerGroupChildrenMixin = mainPath.children ? {\n children: mainPath.children.map(fillBlack)\n } : {};\n var maskInnerGroup = {\n tag: 'g',\n attributes: _objectSpread({}, trans.inner),\n children: [fillBlack(_objectSpread({\n tag: mainPath.tag,\n attributes: _objectSpread({}, mainPath.attributes, trans.path)\n }, maskInnerGroupChildrenMixin))]\n };\n var maskOuterGroup = {\n tag: 'g',\n attributes: _objectSpread({}, trans.outer),\n children: [maskInnerGroup]\n };\n var maskId = \"mask-\".concat(explicitMaskId || nextUniqueId());\n var clipId = \"clip-\".concat(explicitMaskId || nextUniqueId());\n var maskTag = {\n tag: 'mask',\n attributes: _objectSpread({}, ALL_SPACE, {\n id: maskId,\n maskUnits: 'userSpaceOnUse',\n maskContentUnits: 'userSpaceOnUse'\n }),\n children: [maskRect, maskOuterGroup]\n };\n var defs = {\n tag: 'defs',\n children: [{\n tag: 'clipPath',\n attributes: {\n id: clipId\n },\n children: deGroup(maskPath)\n }, maskTag]\n };\n children.push(defs, {\n tag: 'rect',\n attributes: _objectSpread({\n fill: 'currentColor',\n 'clip-path': \"url(#\".concat(clipId, \")\"),\n mask: \"url(#\".concat(maskId, \")\")\n }, ALL_SPACE)\n });\n return {\n children: children,\n attributes: attributes\n };\n}\n\nfunction makeIconStandard(_ref) {\n var children = _ref.children,\n attributes = _ref.attributes,\n main = _ref.main,\n transform = _ref.transform,\n styles = _ref.styles;\n var styleString = joinStyles(styles);\n\n if (styleString.length > 0) {\n attributes['style'] = styleString;\n }\n\n if (transformIsMeaningful(transform)) {\n var trans = transformForSvg({\n transform: transform,\n containerWidth: main.width,\n iconWidth: main.width\n });\n children.push({\n tag: 'g',\n attributes: _objectSpread({}, trans.outer),\n children: [{\n tag: 'g',\n attributes: _objectSpread({}, trans.inner),\n children: [{\n tag: main.icon.tag,\n children: main.icon.children,\n attributes: _objectSpread({}, main.icon.attributes, trans.path)\n }]\n }]\n });\n } else {\n children.push(main.icon);\n }\n\n return {\n children: children,\n attributes: attributes\n };\n}\n\nfunction asIcon(_ref) {\n var children = _ref.children,\n main = _ref.main,\n mask = _ref.mask,\n attributes = _ref.attributes,\n styles = _ref.styles,\n transform = _ref.transform;\n\n if (transformIsMeaningful(transform) && main.found && !mask.found) {\n var width = main.width,\n height = main.height;\n var offset = {\n x: width / height / 2,\n y: 0.5\n };\n attributes['style'] = joinStyles(_objectSpread({}, styles, {\n 'transform-origin': \"\".concat(offset.x + transform.x / 16, \"em \").concat(offset.y + transform.y / 16, \"em\")\n }));\n }\n\n return [{\n tag: 'svg',\n attributes: attributes,\n children: children\n }];\n}\n\nfunction asSymbol(_ref) {\n var prefix = _ref.prefix,\n iconName = _ref.iconName,\n children = _ref.children,\n attributes = _ref.attributes,\n symbol = _ref.symbol;\n var id = symbol === true ? \"\".concat(prefix, \"-\").concat(config.familyPrefix, \"-\").concat(iconName) : symbol;\n return [{\n tag: 'svg',\n attributes: {\n style: 'display: none;'\n },\n children: [{\n tag: 'symbol',\n attributes: _objectSpread({}, attributes, {\n id: id\n }),\n children: children\n }]\n }];\n}\n\nfunction makeInlineSvgAbstract(params) {\n var _params$icons = params.icons,\n main = _params$icons.main,\n mask = _params$icons.mask,\n prefix = params.prefix,\n iconName = params.iconName,\n transform = params.transform,\n symbol = params.symbol,\n title = params.title,\n maskId = params.maskId,\n titleId = params.titleId,\n extra = params.extra,\n _params$watchable = params.watchable,\n watchable = _params$watchable === void 0 ? false : _params$watchable;\n\n var _ref = mask.found ? mask : main,\n width = _ref.width,\n height = _ref.height;\n\n var isUploadedIcon = prefix === 'fak';\n var widthClass = isUploadedIcon ? '' : \"fa-w-\".concat(Math.ceil(width / height * 16));\n var attrClass = [config.replacementClass, iconName ? \"\".concat(config.familyPrefix, \"-\").concat(iconName) : '', widthClass].filter(function (c) {\n return extra.classes.indexOf(c) === -1;\n }).filter(function (c) {\n return c !== '' || !!c;\n }).concat(extra.classes).join(' ');\n var content = {\n children: [],\n attributes: _objectSpread({}, extra.attributes, {\n 'data-prefix': prefix,\n 'data-icon': iconName,\n 'class': attrClass,\n 'role': extra.attributes.role || 'img',\n 'xmlns': 'http://www.w3.org/2000/svg',\n 'viewBox': \"0 0 \".concat(width, \" \").concat(height)\n })\n };\n var uploadedIconWidthStyle = isUploadedIcon && !~extra.classes.indexOf('fa-fw') ? {\n width: \"\".concat(width / height * 16 * 0.0625, \"em\")\n } : {};\n\n if (watchable) {\n content.attributes[DATA_FA_I2SVG] = '';\n }\n\n if (title) content.children.push({\n tag: 'title',\n attributes: {\n id: content.attributes['aria-labelledby'] || \"title-\".concat(titleId || nextUniqueId())\n },\n children: [title]\n });\n\n var args = _objectSpread({}, content, {\n prefix: prefix,\n iconName: iconName,\n main: main,\n mask: mask,\n maskId: maskId,\n transform: transform,\n symbol: symbol,\n styles: _objectSpread({}, uploadedIconWidthStyle, extra.styles)\n });\n\n var _ref2 = mask.found && main.found ? makeIconMasking(args) : makeIconStandard(args),\n children = _ref2.children,\n attributes = _ref2.attributes;\n\n args.children = children;\n args.attributes = attributes;\n\n if (symbol) {\n return asSymbol(args);\n } else {\n return asIcon(args);\n }\n}\n\nfunction makeLayersTextAbstract(params) {\n var content = params.content,\n width = params.width,\n height = params.height,\n transform = params.transform,\n title = params.title,\n extra = params.extra,\n _params$watchable2 = params.watchable,\n watchable = _params$watchable2 === void 0 ? false : _params$watchable2;\n\n var attributes = _objectSpread({}, extra.attributes, title ? {\n 'title': title\n } : {}, {\n 'class': extra.classes.join(' ')\n });\n\n if (watchable) {\n attributes[DATA_FA_I2SVG] = '';\n }\n\n var styles = _objectSpread({}, extra.styles);\n\n if (transformIsMeaningful(transform)) {\n styles['transform'] = transformForCss({\n transform: transform,\n startCentered: true,\n width: width,\n height: height\n });\n styles['-webkit-transform'] = styles['transform'];\n }\n\n var styleString = joinStyles(styles);\n\n if (styleString.length > 0) {\n attributes['style'] = styleString;\n }\n\n var val = [];\n val.push({\n tag: 'span',\n attributes: attributes,\n children: [content]\n });\n\n if (title) {\n val.push({\n tag: 'span',\n attributes: {\n class: 'sr-only'\n },\n children: [title]\n });\n }\n\n return val;\n}\n\nfunction makeLayersCounterAbstract(params) {\n var content = params.content,\n title = params.title,\n extra = params.extra;\n\n var attributes = _objectSpread({}, extra.attributes, title ? {\n 'title': title\n } : {}, {\n 'class': extra.classes.join(' ')\n });\n\n var styleString = joinStyles(extra.styles);\n\n if (styleString.length > 0) {\n attributes['style'] = styleString;\n }\n\n var val = [];\n val.push({\n tag: 'span',\n attributes: attributes,\n children: [content]\n });\n\n if (title) {\n val.push({\n tag: 'span',\n attributes: {\n class: 'sr-only'\n },\n children: [title]\n });\n }\n\n return val;\n}\n\nvar noop$1 = function noop() {};\n\nvar p = config.measurePerformance && PERFORMANCE && PERFORMANCE.mark && PERFORMANCE.measure ? PERFORMANCE : {\n mark: noop$1,\n measure: noop$1\n};\nvar preamble = \"FA \\\"5.15.1\\\"\";\n\nvar begin = function begin(name) {\n p.mark(\"\".concat(preamble, \" \").concat(name, \" begins\"));\n return function () {\n return end(name);\n };\n};\n\nvar end = function end(name) {\n p.mark(\"\".concat(preamble, \" \").concat(name, \" ends\"));\n p.measure(\"\".concat(preamble, \" \").concat(name), \"\".concat(preamble, \" \").concat(name, \" begins\"), \"\".concat(preamble, \" \").concat(name, \" ends\"));\n};\n\nvar perf = {\n begin: begin,\n end: end\n};\n/**\n * Internal helper to bind a function known to have 4 arguments\n * to a given context.\n */\n\nvar bindInternal4 = function bindInternal4(func, thisContext) {\n return function (a, b, c, d) {\n return func.call(thisContext, a, b, c, d);\n };\n};\n/**\n * # Reduce\n *\n * A fast object `.reduce()` implementation.\n *\n * @param {Object} subject The object to reduce over.\n * @param {Function} fn The reducer function.\n * @param {mixed} initialValue The initial value for the reducer, defaults to subject[0].\n * @param {Object} thisContext The context for the reducer.\n * @return {mixed} The final result.\n */\n\n\nvar reduce = function fastReduceObject(subject, fn, initialValue, thisContext) {\n var keys = Object.keys(subject),\n length = keys.length,\n iterator = thisContext !== undefined ? bindInternal4(fn, thisContext) : fn,\n i,\n key,\n result;\n\n if (initialValue === undefined) {\n i = 1;\n result = subject[keys[0]];\n } else {\n i = 0;\n result = initialValue;\n }\n\n for (; i < length; i++) {\n key = keys[i];\n result = iterator(result, subject[key], key, subject);\n }\n\n return result;\n};\n\nfunction toHex(unicode) {\n var result = '';\n\n for (var i = 0; i < unicode.length; i++) {\n var hex = unicode.charCodeAt(i).toString(16);\n result += ('000' + hex).slice(-4);\n }\n\n return result;\n}\n\nfunction codePointAt(string, index) {\n /*! https://mths.be/codepointat v0.2.0 by @mathias */\n var size = string.length;\n var first = string.charCodeAt(index);\n var second;\n\n if (first >= 0xD800 && first <= 0xDBFF && size > index + 1) {\n second = string.charCodeAt(index + 1);\n\n if (second >= 0xDC00 && second <= 0xDFFF) {\n return (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000;\n }\n }\n\n return first;\n}\n/**\n * Used to check that the character is between the E000..F8FF private unicode\n * range\n */\n\n\nfunction isPrivateUnicode(iconName) {\n if (iconName.length !== 1) {\n return false;\n } else {\n var cp = codePointAt(iconName, 0);\n return cp >= 57344 && cp <= 63743;\n }\n}\n\nfunction defineIcons(prefix, icons) {\n var params = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n var _params$skipHooks = params.skipHooks,\n skipHooks = _params$skipHooks === void 0 ? false : _params$skipHooks;\n var normalized = Object.keys(icons).reduce(function (acc, iconName) {\n var icon = icons[iconName];\n var expanded = !!icon.icon;\n\n if (expanded) {\n acc[icon.iconName] = icon.icon;\n } else {\n acc[iconName] = icon;\n }\n\n return acc;\n }, {});\n\n if (typeof namespace.hooks.addPack === 'function' && !skipHooks) {\n namespace.hooks.addPack(prefix, normalized);\n } else {\n namespace.styles[prefix] = _objectSpread({}, namespace.styles[prefix] || {}, normalized);\n }\n /**\n * Font Awesome 4 used the prefix of `fa` for all icons. With the introduction\n * of new styles we needed to differentiate between them. Prefix `fa` is now an alias\n * for `fas` so we'll easy the upgrade process for our users by automatically defining\n * this as well.\n */\n\n\n if (prefix === 'fas') {\n defineIcons('fa', icons);\n }\n}\n\nvar styles = namespace.styles,\n shims = namespace.shims;\nvar _byUnicode = {};\nvar _byLigature = {};\nvar _byOldName = {};\n\nvar build = function build() {\n var lookup = function lookup(reducer) {\n return reduce(styles, function (o, style, prefix) {\n o[prefix] = reduce(style, reducer, {});\n return o;\n }, {});\n };\n\n _byUnicode = lookup(function (acc, icon, iconName) {\n if (icon[3]) {\n acc[icon[3]] = iconName;\n }\n\n return acc;\n });\n _byLigature = lookup(function (acc, icon, iconName) {\n var ligatures = icon[2];\n acc[iconName] = iconName;\n ligatures.forEach(function (ligature) {\n acc[ligature] = iconName;\n });\n return acc;\n });\n var hasRegular = 'far' in styles;\n _byOldName = reduce(shims, function (acc, shim) {\n var oldName = shim[0];\n var prefix = shim[1];\n var iconName = shim[2];\n\n if (prefix === 'far' && !hasRegular) {\n prefix = 'fas';\n }\n\n acc[oldName] = {\n prefix: prefix,\n iconName: iconName\n };\n return acc;\n }, {});\n};\n\nbuild();\n\nfunction byUnicode(prefix, unicode) {\n return (_byUnicode[prefix] || {})[unicode];\n}\n\nfunction byLigature(prefix, ligature) {\n return (_byLigature[prefix] || {})[ligature];\n}\n\nfunction byOldName(name) {\n return _byOldName[name] || {\n prefix: null,\n iconName: null\n };\n}\n\nvar styles$1 = namespace.styles;\n\nvar emptyCanonicalIcon = function emptyCanonicalIcon() {\n return {\n prefix: null,\n iconName: null,\n rest: []\n };\n};\n\nfunction getCanonicalIcon(values) {\n return values.reduce(function (acc, cls) {\n var iconName = getIconName(config.familyPrefix, cls);\n\n if (styles$1[cls]) {\n acc.prefix = cls;\n } else if (config.autoFetchSvg && Object.keys(PREFIX_TO_STYLE).indexOf(cls) > -1) {\n acc.prefix = cls;\n } else if (iconName) {\n var shim = acc.prefix === 'fa' ? byOldName(iconName) : {};\n acc.iconName = shim.iconName || iconName;\n acc.prefix = shim.prefix || acc.prefix;\n } else if (cls !== config.replacementClass && cls.indexOf('fa-w-') !== 0) {\n acc.rest.push(cls);\n }\n\n return acc;\n }, emptyCanonicalIcon());\n}\n\nfunction iconFromMapping(mapping, prefix, iconName) {\n if (mapping && mapping[prefix] && mapping[prefix][iconName]) {\n return {\n prefix: prefix,\n iconName: iconName,\n icon: mapping[prefix][iconName]\n };\n }\n}\n\nfunction toHtml(abstractNodes) {\n var tag = abstractNodes.tag,\n _abstractNodes$attrib = abstractNodes.attributes,\n attributes = _abstractNodes$attrib === void 0 ? {} : _abstractNodes$attrib,\n _abstractNodes$childr = abstractNodes.children,\n children = _abstractNodes$childr === void 0 ? [] : _abstractNodes$childr;\n\n if (typeof abstractNodes === 'string') {\n return htmlEscape(abstractNodes);\n } else {\n return \"<\".concat(tag, \" \").concat(joinAttributes(attributes), \">\").concat(children.map(toHtml).join(''), \"\");\n }\n}\n\nvar noop$2 = function noop() {};\n\nfunction isWatched(node) {\n var i2svg = node.getAttribute ? node.getAttribute(DATA_FA_I2SVG) : null;\n return typeof i2svg === 'string';\n}\n\nfunction getMutator() {\n if (config.autoReplaceSvg === true) {\n return mutators.replace;\n }\n\n var mutator = mutators[config.autoReplaceSvg];\n return mutator || mutators.replace;\n}\n\nvar mutators = {\n replace: function replace(mutation) {\n var node = mutation[0];\n var abstract = mutation[1];\n var newOuterHTML = abstract.map(function (a) {\n return toHtml(a);\n }).join('\\n');\n\n if (node.parentNode && node.outerHTML) {\n node.outerHTML = newOuterHTML + (config.keepOriginalSource && node.tagName.toLowerCase() !== 'svg' ? \"\") : '');\n } else if (node.parentNode) {\n var newNode = document.createElement('span');\n node.parentNode.replaceChild(newNode, node);\n newNode.outerHTML = newOuterHTML;\n }\n },\n nest: function nest(mutation) {\n var node = mutation[0];\n var abstract = mutation[1]; // If we already have a replaced node we do not want to continue nesting within it.\n // Short-circuit to the standard replacement\n\n if (~classArray(node).indexOf(config.replacementClass)) {\n return mutators.replace(mutation);\n }\n\n var forSvg = new RegExp(\"\".concat(config.familyPrefix, \"-.*\"));\n delete abstract[0].attributes.style;\n delete abstract[0].attributes.id;\n var splitClasses = abstract[0].attributes.class.split(' ').reduce(function (acc, cls) {\n if (cls === config.replacementClass || cls.match(forSvg)) {\n acc.toSvg.push(cls);\n } else {\n acc.toNode.push(cls);\n }\n\n return acc;\n }, {\n toNode: [],\n toSvg: []\n });\n abstract[0].attributes.class = splitClasses.toSvg.join(' ');\n var newInnerHTML = abstract.map(function (a) {\n return toHtml(a);\n }).join('\\n');\n node.setAttribute('class', splitClasses.toNode.join(' '));\n node.setAttribute(DATA_FA_I2SVG, '');\n node.innerHTML = newInnerHTML;\n }\n};\n\nfunction performOperationSync(op) {\n op();\n}\n\nfunction perform(mutations, callback) {\n var callbackFunction = typeof callback === 'function' ? callback : noop$2;\n\n if (mutations.length === 0) {\n callbackFunction();\n } else {\n var frame = performOperationSync;\n\n if (config.mutateApproach === MUTATION_APPROACH_ASYNC) {\n frame = WINDOW.requestAnimationFrame || performOperationSync;\n }\n\n frame(function () {\n var mutator = getMutator();\n var mark = perf.begin('mutate');\n mutations.map(mutator);\n mark();\n callbackFunction();\n });\n }\n}\n\nvar disabled = false;\n\nfunction disableObservation() {\n disabled = true;\n}\n\nfunction enableObservation() {\n disabled = false;\n}\n\nvar mo = null;\n\nfunction observe(options) {\n if (!MUTATION_OBSERVER) {\n return;\n }\n\n if (!config.observeMutations) {\n return;\n }\n\n var treeCallback = options.treeCallback,\n nodeCallback = options.nodeCallback,\n pseudoElementsCallback = options.pseudoElementsCallback,\n _options$observeMutat = options.observeMutationsRoot,\n observeMutationsRoot = _options$observeMutat === void 0 ? DOCUMENT : _options$observeMutat;\n mo = new MUTATION_OBSERVER(function (objects) {\n if (disabled) return;\n toArray(objects).forEach(function (mutationRecord) {\n if (mutationRecord.type === 'childList' && mutationRecord.addedNodes.length > 0 && !isWatched(mutationRecord.addedNodes[0])) {\n if (config.searchPseudoElements) {\n pseudoElementsCallback(mutationRecord.target);\n }\n\n treeCallback(mutationRecord.target);\n }\n\n if (mutationRecord.type === 'attributes' && mutationRecord.target.parentNode && config.searchPseudoElements) {\n pseudoElementsCallback(mutationRecord.target.parentNode);\n }\n\n if (mutationRecord.type === 'attributes' && isWatched(mutationRecord.target) && ~ATTRIBUTES_WATCHED_FOR_MUTATION.indexOf(mutationRecord.attributeName)) {\n if (mutationRecord.attributeName === 'class') {\n var _getCanonicalIcon = getCanonicalIcon(classArray(mutationRecord.target)),\n prefix = _getCanonicalIcon.prefix,\n iconName = _getCanonicalIcon.iconName;\n\n if (prefix) mutationRecord.target.setAttribute('data-prefix', prefix);\n if (iconName) mutationRecord.target.setAttribute('data-icon', iconName);\n } else {\n nodeCallback(mutationRecord.target);\n }\n }\n });\n });\n if (!IS_DOM) return;\n mo.observe(observeMutationsRoot, {\n childList: true,\n attributes: true,\n characterData: true,\n subtree: true\n });\n}\n\nfunction disconnect() {\n if (!mo) return;\n mo.disconnect();\n}\n\nfunction styleParser(node) {\n var style = node.getAttribute('style');\n var val = [];\n\n if (style) {\n val = style.split(';').reduce(function (acc, style) {\n var styles = style.split(':');\n var prop = styles[0];\n var value = styles.slice(1);\n\n if (prop && value.length > 0) {\n acc[prop] = value.join(':').trim();\n }\n\n return acc;\n }, {});\n }\n\n return val;\n}\n\nfunction classParser(node) {\n var existingPrefix = node.getAttribute('data-prefix');\n var existingIconName = node.getAttribute('data-icon');\n var innerText = node.innerText !== undefined ? node.innerText.trim() : '';\n var val = getCanonicalIcon(classArray(node));\n\n if (existingPrefix && existingIconName) {\n val.prefix = existingPrefix;\n val.iconName = existingIconName;\n }\n\n if (val.prefix && innerText.length > 1) {\n val.iconName = byLigature(val.prefix, node.innerText);\n } else if (val.prefix && innerText.length === 1) {\n val.iconName = byUnicode(val.prefix, toHex(node.innerText));\n }\n\n return val;\n}\n\nvar parseTransformString = function parseTransformString(transformString) {\n var transform = {\n size: 16,\n x: 0,\n y: 0,\n flipX: false,\n flipY: false,\n rotate: 0\n };\n\n if (!transformString) {\n return transform;\n } else {\n return transformString.toLowerCase().split(' ').reduce(function (acc, n) {\n var parts = n.toLowerCase().split('-');\n var first = parts[0];\n var rest = parts.slice(1).join('-');\n\n if (first && rest === 'h') {\n acc.flipX = true;\n return acc;\n }\n\n if (first && rest === 'v') {\n acc.flipY = true;\n return acc;\n }\n\n rest = parseFloat(rest);\n\n if (isNaN(rest)) {\n return acc;\n }\n\n switch (first) {\n case 'grow':\n acc.size = acc.size + rest;\n break;\n\n case 'shrink':\n acc.size = acc.size - rest;\n break;\n\n case 'left':\n acc.x = acc.x - rest;\n break;\n\n case 'right':\n acc.x = acc.x + rest;\n break;\n\n case 'up':\n acc.y = acc.y - rest;\n break;\n\n case 'down':\n acc.y = acc.y + rest;\n break;\n\n case 'rotate':\n acc.rotate = acc.rotate + rest;\n break;\n }\n\n return acc;\n }, transform);\n }\n};\n\nfunction transformParser(node) {\n return parseTransformString(node.getAttribute('data-fa-transform'));\n}\n\nfunction symbolParser(node) {\n var symbol = node.getAttribute('data-fa-symbol');\n return symbol === null ? false : symbol === '' ? true : symbol;\n}\n\nfunction attributesParser(node) {\n var extraAttributes = toArray(node.attributes).reduce(function (acc, attr) {\n if (acc.name !== 'class' && acc.name !== 'style') {\n acc[attr.name] = attr.value;\n }\n\n return acc;\n }, {});\n var title = node.getAttribute('title');\n var titleId = node.getAttribute('data-fa-title-id');\n\n if (config.autoA11y) {\n if (title) {\n extraAttributes['aria-labelledby'] = \"\".concat(config.replacementClass, \"-title-\").concat(titleId || nextUniqueId());\n } else {\n extraAttributes['aria-hidden'] = 'true';\n extraAttributes['focusable'] = 'false';\n }\n }\n\n return extraAttributes;\n}\n\nfunction maskParser(node) {\n var mask = node.getAttribute('data-fa-mask');\n\n if (!mask) {\n return emptyCanonicalIcon();\n } else {\n return getCanonicalIcon(mask.split(' ').map(function (i) {\n return i.trim();\n }));\n }\n}\n\nfunction blankMeta() {\n return {\n iconName: null,\n title: null,\n titleId: null,\n prefix: null,\n transform: meaninglessTransform,\n symbol: false,\n mask: null,\n maskId: null,\n extra: {\n classes: [],\n styles: {},\n attributes: {}\n }\n };\n}\n\nfunction parseMeta(node) {\n var _classParser = classParser(node),\n iconName = _classParser.iconName,\n prefix = _classParser.prefix,\n extraClasses = _classParser.rest;\n\n var extraStyles = styleParser(node);\n var transform = transformParser(node);\n var symbol = symbolParser(node);\n var extraAttributes = attributesParser(node);\n var mask = maskParser(node);\n return {\n iconName: iconName,\n title: node.getAttribute('title'),\n titleId: node.getAttribute('data-fa-title-id'),\n prefix: prefix,\n transform: transform,\n symbol: symbol,\n mask: mask,\n maskId: node.getAttribute('data-fa-mask-id'),\n extra: {\n classes: extraClasses,\n styles: extraStyles,\n attributes: extraAttributes\n }\n };\n}\n\nfunction MissingIcon(error) {\n this.name = 'MissingIcon';\n this.message = error || 'Icon unavailable';\n this.stack = new Error().stack;\n}\n\nMissingIcon.prototype = Object.create(Error.prototype);\nMissingIcon.prototype.constructor = MissingIcon;\nvar FILL = {\n fill: 'currentColor'\n};\nvar ANIMATION_BASE = {\n attributeType: 'XML',\n repeatCount: 'indefinite',\n dur: '2s'\n};\nvar RING = {\n tag: 'path',\n attributes: _objectSpread({}, FILL, {\n d: 'M156.5,447.7l-12.6,29.5c-18.7-9.5-35.9-21.2-51.5-34.9l22.7-22.7C127.6,430.5,141.5,440,156.5,447.7z M40.6,272H8.5 c1.4,21.2,5.4,41.7,11.7,61.1L50,321.2C45.1,305.5,41.8,289,40.6,272z M40.6,240c1.4-18.8,5.2-37,11.1-54.1l-29.5-12.6 C14.7,194.3,10,216.7,8.5,240H40.6z M64.3,156.5c7.8-14.9,17.2-28.8,28.1-41.5L69.7,92.3c-13.7,15.6-25.5,32.8-34.9,51.5 L64.3,156.5z M397,419.6c-13.9,12-29.4,22.3-46.1,30.4l11.9,29.8c20.7-9.9,39.8-22.6,56.9-37.6L397,419.6z M115,92.4 c13.9-12,29.4-22.3,46.1-30.4l-11.9-29.8c-20.7,9.9-39.8,22.6-56.8,37.6L115,92.4z M447.7,355.5c-7.8,14.9-17.2,28.8-28.1,41.5 l22.7,22.7c13.7-15.6,25.5-32.9,34.9-51.5L447.7,355.5z M471.4,272c-1.4,18.8-5.2,37-11.1,54.1l29.5,12.6 c7.5-21.1,12.2-43.5,13.6-66.8H471.4z M321.2,462c-15.7,5-32.2,8.2-49.2,9.4v32.1c21.2-1.4,41.7-5.4,61.1-11.7L321.2,462z M240,471.4c-18.8-1.4-37-5.2-54.1-11.1l-12.6,29.5c21.1,7.5,43.5,12.2,66.8,13.6V471.4z M462,190.8c5,15.7,8.2,32.2,9.4,49.2h32.1 c-1.4-21.2-5.4-41.7-11.7-61.1L462,190.8z M92.4,397c-12-13.9-22.3-29.4-30.4-46.1l-29.8,11.9c9.9,20.7,22.6,39.8,37.6,56.9 L92.4,397z M272,40.6c18.8,1.4,36.9,5.2,54.1,11.1l12.6-29.5C317.7,14.7,295.3,10,272,8.5V40.6z M190.8,50 c15.7-5,32.2-8.2,49.2-9.4V8.5c-21.2,1.4-41.7,5.4-61.1,11.7L190.8,50z M442.3,92.3L419.6,115c12,13.9,22.3,29.4,30.5,46.1 l29.8-11.9C470,128.5,457.3,109.4,442.3,92.3z M397,92.4l22.7-22.7c-15.6-13.7-32.8-25.5-51.5-34.9l-12.6,29.5 C370.4,72.1,384.4,81.5,397,92.4z'\n })\n};\n\nvar OPACITY_ANIMATE = _objectSpread({}, ANIMATION_BASE, {\n attributeName: 'opacity'\n});\n\nvar DOT = {\n tag: 'circle',\n attributes: _objectSpread({}, FILL, {\n cx: '256',\n cy: '364',\n r: '28'\n }),\n children: [{\n tag: 'animate',\n attributes: _objectSpread({}, ANIMATION_BASE, {\n attributeName: 'r',\n values: '28;14;28;28;14;28;'\n })\n }, {\n tag: 'animate',\n attributes: _objectSpread({}, OPACITY_ANIMATE, {\n values: '1;0;1;1;0;1;'\n })\n }]\n};\nvar QUESTION = {\n tag: 'path',\n attributes: _objectSpread({}, FILL, {\n opacity: '1',\n d: 'M263.7,312h-16c-6.6,0-12-5.4-12-12c0-71,77.4-63.9,77.4-107.8c0-20-17.8-40.2-57.4-40.2c-29.1,0-44.3,9.6-59.2,28.7 c-3.9,5-11.1,6-16.2,2.4l-13.1-9.2c-5.6-3.9-6.9-11.8-2.6-17.2c21.2-27.2,46.4-44.7,91.2-44.7c52.3,0,97.4,29.8,97.4,80.2 c0,67.6-77.4,63.5-77.4,107.8C275.7,306.6,270.3,312,263.7,312z'\n }),\n children: [{\n tag: 'animate',\n attributes: _objectSpread({}, OPACITY_ANIMATE, {\n values: '1;0;0;0;0;1;'\n })\n }]\n};\nvar EXCLAMATION = {\n tag: 'path',\n attributes: _objectSpread({}, FILL, {\n opacity: '0',\n d: 'M232.5,134.5l7,168c0.3,6.4,5.6,11.5,12,11.5h9c6.4,0,11.7-5.1,12-11.5l7-168c0.3-6.8-5.2-12.5-12-12.5h-23 C237.7,122,232.2,127.7,232.5,134.5z'\n }),\n children: [{\n tag: 'animate',\n attributes: _objectSpread({}, OPACITY_ANIMATE, {\n values: '0;0;1;1;0;0;'\n })\n }]\n};\nvar missing = {\n tag: 'g',\n children: [RING, DOT, QUESTION, EXCLAMATION]\n};\nvar styles$2 = namespace.styles;\n\nfunction resolveCustomIconVersion() {\n var kitConfig = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n var iconName = arguments.length > 1 ? arguments[1] : undefined;\n\n if (iconName && isPrivateUnicode(iconName)) {\n if (kitConfig && kitConfig.iconUploads) {\n var iconUploads = kitConfig.iconUploads;\n var descriptiveIconName = Object.keys(iconUploads).find(function (key) {\n return iconUploads[key] && iconUploads[key].u && iconUploads[key].u === toHex(iconName);\n });\n\n if (descriptiveIconName) {\n return iconUploads[descriptiveIconName].v;\n }\n }\n } else {\n if (kitConfig && kitConfig.iconUploads && kitConfig.iconUploads[iconName] && kitConfig.iconUploads[iconName].v) {\n return kitConfig.iconUploads[iconName].v;\n }\n }\n}\n\nfunction asFoundIcon(icon) {\n var width = icon[0];\n var height = icon[1];\n\n var _icon$slice = icon.slice(4),\n _icon$slice2 = _slicedToArray(_icon$slice, 1),\n vectorData = _icon$slice2[0];\n\n var element = null;\n\n if (Array.isArray(vectorData)) {\n element = {\n tag: 'g',\n attributes: {\n class: \"\".concat(config.familyPrefix, \"-\").concat(DUOTONE_CLASSES.GROUP)\n },\n children: [{\n tag: 'path',\n attributes: {\n class: \"\".concat(config.familyPrefix, \"-\").concat(DUOTONE_CLASSES.SECONDARY),\n fill: 'currentColor',\n d: vectorData[0]\n }\n }, {\n tag: 'path',\n attributes: {\n class: \"\".concat(config.familyPrefix, \"-\").concat(DUOTONE_CLASSES.PRIMARY),\n fill: 'currentColor',\n d: vectorData[1]\n }\n }]\n };\n } else {\n element = {\n tag: 'path',\n attributes: {\n fill: 'currentColor',\n d: vectorData\n }\n };\n }\n\n return {\n found: true,\n width: width,\n height: height,\n icon: element\n };\n}\n\nfunction findIcon(iconName, prefix) {\n return new picked(function (resolve, reject) {\n var val = {\n found: false,\n width: 512,\n height: 512,\n icon: missing\n };\n\n if (iconName && prefix && styles$2[prefix] && styles$2[prefix][iconName]) {\n var icon = styles$2[prefix][iconName];\n return resolve(asFoundIcon(icon));\n }\n\n var kitToken = null;\n var iconVersion = resolveCustomIconVersion(WINDOW.FontAwesomeKitConfig, iconName);\n\n if (WINDOW.FontAwesomeKitConfig && WINDOW.FontAwesomeKitConfig.token) {\n kitToken = WINDOW.FontAwesomeKitConfig.token;\n }\n\n if (iconName && prefix && !config.showMissingIcons) {\n reject(new MissingIcon(\"Icon is missing for prefix \".concat(prefix, \" with icon name \").concat(iconName)));\n } else {\n resolve(val);\n }\n });\n}\n\nvar styles$3 = namespace.styles;\n\nfunction generateSvgReplacementMutation(node, nodeMeta) {\n var iconName = nodeMeta.iconName,\n title = nodeMeta.title,\n titleId = nodeMeta.titleId,\n prefix = nodeMeta.prefix,\n transform = nodeMeta.transform,\n symbol = nodeMeta.symbol,\n mask = nodeMeta.mask,\n maskId = nodeMeta.maskId,\n extra = nodeMeta.extra;\n return new picked(function (resolve, reject) {\n picked.all([findIcon(iconName, prefix), findIcon(mask.iconName, mask.prefix)]).then(function (_ref) {\n var _ref2 = _slicedToArray(_ref, 2),\n main = _ref2[0],\n mask = _ref2[1];\n\n resolve([node, makeInlineSvgAbstract({\n icons: {\n main: main,\n mask: mask\n },\n prefix: prefix,\n iconName: iconName,\n transform: transform,\n symbol: symbol,\n mask: mask,\n maskId: maskId,\n title: title,\n titleId: titleId,\n extra: extra,\n watchable: true\n })]);\n });\n });\n}\n\nfunction generateLayersText(node, nodeMeta) {\n var title = nodeMeta.title,\n transform = nodeMeta.transform,\n extra = nodeMeta.extra;\n var width = null;\n var height = null;\n\n if (IS_IE) {\n var computedFontSize = parseInt(getComputedStyle(node).fontSize, 10);\n var boundingClientRect = node.getBoundingClientRect();\n width = boundingClientRect.width / computedFontSize;\n height = boundingClientRect.height / computedFontSize;\n }\n\n if (config.autoA11y && !title) {\n extra.attributes['aria-hidden'] = 'true';\n }\n\n return picked.resolve([node, makeLayersTextAbstract({\n content: node.innerHTML,\n width: width,\n height: height,\n transform: transform,\n title: title,\n extra: extra,\n watchable: true\n })]);\n}\n\nfunction generateMutation(node) {\n var nodeMeta = parseMeta(node);\n\n if (~nodeMeta.extra.classes.indexOf(LAYERS_TEXT_CLASSNAME)) {\n return generateLayersText(node, nodeMeta);\n } else {\n return generateSvgReplacementMutation(node, nodeMeta);\n }\n}\n\nfunction onTree(root) {\n var callback = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n if (!IS_DOM) return;\n var htmlClassList = DOCUMENT.documentElement.classList;\n\n var hclAdd = function hclAdd(suffix) {\n return htmlClassList.add(\"\".concat(HTML_CLASS_I2SVG_BASE_CLASS, \"-\").concat(suffix));\n };\n\n var hclRemove = function hclRemove(suffix) {\n return htmlClassList.remove(\"\".concat(HTML_CLASS_I2SVG_BASE_CLASS, \"-\").concat(suffix));\n };\n\n var prefixes = config.autoFetchSvg ? Object.keys(PREFIX_TO_STYLE) : Object.keys(styles$3);\n var prefixesDomQuery = [\".\".concat(LAYERS_TEXT_CLASSNAME, \":not([\").concat(DATA_FA_I2SVG, \"])\")].concat(prefixes.map(function (p) {\n return \".\".concat(p, \":not([\").concat(DATA_FA_I2SVG, \"])\");\n })).join(', ');\n\n if (prefixesDomQuery.length === 0) {\n return;\n }\n\n var candidates = [];\n\n try {\n candidates = toArray(root.querySelectorAll(prefixesDomQuery));\n } catch (e) {// noop\n }\n\n if (candidates.length > 0) {\n hclAdd('pending');\n hclRemove('complete');\n } else {\n return;\n }\n\n var mark = perf.begin('onTree');\n var mutations = candidates.reduce(function (acc, node) {\n try {\n var mutation = generateMutation(node);\n\n if (mutation) {\n acc.push(mutation);\n }\n } catch (e) {\n if (!PRODUCTION) {\n if (e instanceof MissingIcon) {\n console.error(e);\n }\n }\n }\n\n return acc;\n }, []);\n return new picked(function (resolve, reject) {\n picked.all(mutations).then(function (resolvedMutations) {\n perform(resolvedMutations, function () {\n hclAdd('active');\n hclAdd('complete');\n hclRemove('pending');\n if (typeof callback === 'function') callback();\n mark();\n resolve();\n });\n }).catch(function () {\n mark();\n reject();\n });\n });\n}\n\nfunction onNode(node) {\n var callback = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;\n generateMutation(node).then(function (mutation) {\n if (mutation) {\n perform([mutation], callback);\n }\n });\n}\n\nfunction replaceForPosition(node, position) {\n var pendingAttribute = \"\".concat(DATA_FA_PSEUDO_ELEMENT_PENDING).concat(position.replace(':', '-'));\n return new picked(function (resolve, reject) {\n if (node.getAttribute(pendingAttribute) !== null) {\n // This node is already being processed\n return resolve();\n }\n\n var children = toArray(node.children);\n var alreadyProcessedPseudoElement = children.filter(function (c) {\n return c.getAttribute(DATA_FA_PSEUDO_ELEMENT) === position;\n })[0];\n var styles = WINDOW.getComputedStyle(node, position);\n var fontFamily = styles.getPropertyValue('font-family').match(FONT_FAMILY_PATTERN);\n var fontWeight = styles.getPropertyValue('font-weight');\n var content = styles.getPropertyValue('content');\n\n if (alreadyProcessedPseudoElement && !fontFamily) {\n // If we've already processed it but the current computed style does not result in a font-family,\n // that probably means that a class name that was previously present to make the icon has been\n // removed. So we now should delete the icon.\n node.removeChild(alreadyProcessedPseudoElement);\n return resolve();\n } else if (fontFamily && content !== 'none' && content !== '') {\n var _content = styles.getPropertyValue('content');\n\n var prefix = ~['Solid', 'Regular', 'Light', 'Duotone', 'Brands', 'Kit'].indexOf(fontFamily[2]) ? STYLE_TO_PREFIX[fontFamily[2].toLowerCase()] : FONT_WEIGHT_TO_PREFIX[fontWeight];\n var hexValue = toHex(_content.length === 3 ? _content.substr(1, 1) : _content);\n var iconName = byUnicode(prefix, hexValue);\n var iconIdentifier = iconName; // Only convert the pseudo element in this :before/:after position into an icon if we haven't\n // already done so with the same prefix and iconName\n\n if (iconName && (!alreadyProcessedPseudoElement || alreadyProcessedPseudoElement.getAttribute(DATA_PREFIX) !== prefix || alreadyProcessedPseudoElement.getAttribute(DATA_ICON) !== iconIdentifier)) {\n node.setAttribute(pendingAttribute, iconIdentifier);\n\n if (alreadyProcessedPseudoElement) {\n // Delete the old one, since we're replacing it with a new one\n node.removeChild(alreadyProcessedPseudoElement);\n }\n\n var meta = blankMeta();\n var extra = meta.extra;\n extra.attributes[DATA_FA_PSEUDO_ELEMENT] = position;\n findIcon(iconName, prefix).then(function (main) {\n var abstract = makeInlineSvgAbstract(_objectSpread({}, meta, {\n icons: {\n main: main,\n mask: emptyCanonicalIcon()\n },\n prefix: prefix,\n iconName: iconIdentifier,\n extra: extra,\n watchable: true\n }));\n var element = DOCUMENT.createElement('svg');\n\n if (position === ':before') {\n node.insertBefore(element, node.firstChild);\n } else {\n node.appendChild(element);\n }\n\n element.outerHTML = abstract.map(function (a) {\n return toHtml(a);\n }).join('\\n');\n node.removeAttribute(pendingAttribute);\n resolve();\n }).catch(reject);\n } else {\n resolve();\n }\n } else {\n resolve();\n }\n });\n}\n\nfunction replace(node) {\n return picked.all([replaceForPosition(node, ':before'), replaceForPosition(node, ':after')]);\n}\n\nfunction processable(node) {\n return node.parentNode !== document.head && !~TAGNAMES_TO_SKIP_FOR_PSEUDOELEMENTS.indexOf(node.tagName.toUpperCase()) && !node.getAttribute(DATA_FA_PSEUDO_ELEMENT) && (!node.parentNode || node.parentNode.tagName !== 'svg');\n}\n\nfunction searchPseudoElements(root) {\n if (!IS_DOM) return;\n return new picked(function (resolve, reject) {\n var operations = toArray(root.querySelectorAll('*')).filter(processable).map(replace);\n var end = perf.begin('searchPseudoElements');\n disableObservation();\n picked.all(operations).then(function () {\n end();\n enableObservation();\n resolve();\n }).catch(function () {\n end();\n enableObservation();\n reject();\n });\n });\n}\n\nvar baseStyles = \"svg:not(:root).svg-inline--fa {\\n overflow: visible;\\n}\\n\\n.svg-inline--fa {\\n display: inline-block;\\n font-size: inherit;\\n height: 1em;\\n overflow: visible;\\n vertical-align: -0.125em;\\n}\\n.svg-inline--fa.fa-lg {\\n vertical-align: -0.225em;\\n}\\n.svg-inline--fa.fa-w-1 {\\n width: 0.0625em;\\n}\\n.svg-inline--fa.fa-w-2 {\\n width: 0.125em;\\n}\\n.svg-inline--fa.fa-w-3 {\\n width: 0.1875em;\\n}\\n.svg-inline--fa.fa-w-4 {\\n width: 0.25em;\\n}\\n.svg-inline--fa.fa-w-5 {\\n width: 0.3125em;\\n}\\n.svg-inline--fa.fa-w-6 {\\n width: 0.375em;\\n}\\n.svg-inline--fa.fa-w-7 {\\n width: 0.4375em;\\n}\\n.svg-inline--fa.fa-w-8 {\\n width: 0.5em;\\n}\\n.svg-inline--fa.fa-w-9 {\\n width: 0.5625em;\\n}\\n.svg-inline--fa.fa-w-10 {\\n width: 0.625em;\\n}\\n.svg-inline--fa.fa-w-11 {\\n width: 0.6875em;\\n}\\n.svg-inline--fa.fa-w-12 {\\n width: 0.75em;\\n}\\n.svg-inline--fa.fa-w-13 {\\n width: 0.8125em;\\n}\\n.svg-inline--fa.fa-w-14 {\\n width: 0.875em;\\n}\\n.svg-inline--fa.fa-w-15 {\\n width: 0.9375em;\\n}\\n.svg-inline--fa.fa-w-16 {\\n width: 1em;\\n}\\n.svg-inline--fa.fa-w-17 {\\n width: 1.0625em;\\n}\\n.svg-inline--fa.fa-w-18 {\\n width: 1.125em;\\n}\\n.svg-inline--fa.fa-w-19 {\\n width: 1.1875em;\\n}\\n.svg-inline--fa.fa-w-20 {\\n width: 1.25em;\\n}\\n.svg-inline--fa.fa-pull-left {\\n margin-right: 0.3em;\\n width: auto;\\n}\\n.svg-inline--fa.fa-pull-right {\\n margin-left: 0.3em;\\n width: auto;\\n}\\n.svg-inline--fa.fa-border {\\n height: 1.5em;\\n}\\n.svg-inline--fa.fa-li {\\n width: 2em;\\n}\\n.svg-inline--fa.fa-fw {\\n width: 1.25em;\\n}\\n\\n.fa-layers svg.svg-inline--fa {\\n bottom: 0;\\n left: 0;\\n margin: auto;\\n position: absolute;\\n right: 0;\\n top: 0;\\n}\\n\\n.fa-layers {\\n display: inline-block;\\n height: 1em;\\n position: relative;\\n text-align: center;\\n vertical-align: -0.125em;\\n width: 1em;\\n}\\n.fa-layers svg.svg-inline--fa {\\n -webkit-transform-origin: center center;\\n transform-origin: center center;\\n}\\n\\n.fa-layers-counter, .fa-layers-text {\\n display: inline-block;\\n position: absolute;\\n text-align: center;\\n}\\n\\n.fa-layers-text {\\n left: 50%;\\n top: 50%;\\n -webkit-transform: translate(-50%, -50%);\\n transform: translate(-50%, -50%);\\n -webkit-transform-origin: center center;\\n transform-origin: center center;\\n}\\n\\n.fa-layers-counter {\\n background-color: #ff253a;\\n border-radius: 1em;\\n -webkit-box-sizing: border-box;\\n box-sizing: border-box;\\n color: #fff;\\n height: 1.5em;\\n line-height: 1;\\n max-width: 5em;\\n min-width: 1.5em;\\n overflow: hidden;\\n padding: 0.25em;\\n right: 0;\\n text-overflow: ellipsis;\\n top: 0;\\n -webkit-transform: scale(0.25);\\n transform: scale(0.25);\\n -webkit-transform-origin: top right;\\n transform-origin: top right;\\n}\\n\\n.fa-layers-bottom-right {\\n bottom: 0;\\n right: 0;\\n top: auto;\\n -webkit-transform: scale(0.25);\\n transform: scale(0.25);\\n -webkit-transform-origin: bottom right;\\n transform-origin: bottom right;\\n}\\n\\n.fa-layers-bottom-left {\\n bottom: 0;\\n left: 0;\\n right: auto;\\n top: auto;\\n -webkit-transform: scale(0.25);\\n transform: scale(0.25);\\n -webkit-transform-origin: bottom left;\\n transform-origin: bottom left;\\n}\\n\\n.fa-layers-top-right {\\n right: 0;\\n top: 0;\\n -webkit-transform: scale(0.25);\\n transform: scale(0.25);\\n -webkit-transform-origin: top right;\\n transform-origin: top right;\\n}\\n\\n.fa-layers-top-left {\\n left: 0;\\n right: auto;\\n top: 0;\\n -webkit-transform: scale(0.25);\\n transform: scale(0.25);\\n -webkit-transform-origin: top left;\\n transform-origin: top left;\\n}\\n\\n.fa-lg {\\n font-size: 1.3333333333em;\\n line-height: 0.75em;\\n vertical-align: -0.0667em;\\n}\\n\\n.fa-xs {\\n font-size: 0.75em;\\n}\\n\\n.fa-sm {\\n font-size: 0.875em;\\n}\\n\\n.fa-1x {\\n font-size: 1em;\\n}\\n\\n.fa-2x {\\n font-size: 2em;\\n}\\n\\n.fa-3x {\\n font-size: 3em;\\n}\\n\\n.fa-4x {\\n font-size: 4em;\\n}\\n\\n.fa-5x {\\n font-size: 5em;\\n}\\n\\n.fa-6x {\\n font-size: 6em;\\n}\\n\\n.fa-7x {\\n font-size: 7em;\\n}\\n\\n.fa-8x {\\n font-size: 8em;\\n}\\n\\n.fa-9x {\\n font-size: 9em;\\n}\\n\\n.fa-10x {\\n font-size: 10em;\\n}\\n\\n.fa-fw {\\n text-align: center;\\n width: 1.25em;\\n}\\n\\n.fa-ul {\\n list-style-type: none;\\n margin-left: 2.5em;\\n padding-left: 0;\\n}\\n.fa-ul > li {\\n position: relative;\\n}\\n\\n.fa-li {\\n left: -2em;\\n position: absolute;\\n text-align: center;\\n width: 2em;\\n line-height: inherit;\\n}\\n\\n.fa-border {\\n border: solid 0.08em #eee;\\n border-radius: 0.1em;\\n padding: 0.2em 0.25em 0.15em;\\n}\\n\\n.fa-pull-left {\\n float: left;\\n}\\n\\n.fa-pull-right {\\n float: right;\\n}\\n\\n.fa.fa-pull-left,\\n.fas.fa-pull-left,\\n.far.fa-pull-left,\\n.fal.fa-pull-left,\\n.fab.fa-pull-left {\\n margin-right: 0.3em;\\n}\\n.fa.fa-pull-right,\\n.fas.fa-pull-right,\\n.far.fa-pull-right,\\n.fal.fa-pull-right,\\n.fab.fa-pull-right {\\n margin-left: 0.3em;\\n}\\n\\n.fa-spin {\\n -webkit-animation: fa-spin 2s infinite linear;\\n animation: fa-spin 2s infinite linear;\\n}\\n\\n.fa-pulse {\\n -webkit-animation: fa-spin 1s infinite steps(8);\\n animation: fa-spin 1s infinite steps(8);\\n}\\n\\n@-webkit-keyframes fa-spin {\\n 0% {\\n -webkit-transform: rotate(0deg);\\n transform: rotate(0deg);\\n }\\n 100% {\\n -webkit-transform: rotate(360deg);\\n transform: rotate(360deg);\\n }\\n}\\n\\n@keyframes fa-spin {\\n 0% {\\n -webkit-transform: rotate(0deg);\\n transform: rotate(0deg);\\n }\\n 100% {\\n -webkit-transform: rotate(360deg);\\n transform: rotate(360deg);\\n }\\n}\\n.fa-rotate-90 {\\n -ms-filter: \\\"progid:DXImageTransform.Microsoft.BasicImage(rotation=1)\\\";\\n -webkit-transform: rotate(90deg);\\n transform: rotate(90deg);\\n}\\n\\n.fa-rotate-180 {\\n -ms-filter: \\\"progid:DXImageTransform.Microsoft.BasicImage(rotation=2)\\\";\\n -webkit-transform: rotate(180deg);\\n transform: rotate(180deg);\\n}\\n\\n.fa-rotate-270 {\\n -ms-filter: \\\"progid:DXImageTransform.Microsoft.BasicImage(rotation=3)\\\";\\n -webkit-transform: rotate(270deg);\\n transform: rotate(270deg);\\n}\\n\\n.fa-flip-horizontal {\\n -ms-filter: \\\"progid:DXImageTransform.Microsoft.BasicImage(rotation=0, mirror=1)\\\";\\n -webkit-transform: scale(-1, 1);\\n transform: scale(-1, 1);\\n}\\n\\n.fa-flip-vertical {\\n -ms-filter: \\\"progid:DXImageTransform.Microsoft.BasicImage(rotation=2, mirror=1)\\\";\\n -webkit-transform: scale(1, -1);\\n transform: scale(1, -1);\\n}\\n\\n.fa-flip-both, .fa-flip-horizontal.fa-flip-vertical {\\n -ms-filter: \\\"progid:DXImageTransform.Microsoft.BasicImage(rotation=2, mirror=1)\\\";\\n -webkit-transform: scale(-1, -1);\\n transform: scale(-1, -1);\\n}\\n\\n:root .fa-rotate-90,\\n:root .fa-rotate-180,\\n:root .fa-rotate-270,\\n:root .fa-flip-horizontal,\\n:root .fa-flip-vertical,\\n:root .fa-flip-both {\\n -webkit-filter: none;\\n filter: none;\\n}\\n\\n.fa-stack {\\n display: inline-block;\\n height: 2em;\\n position: relative;\\n width: 2.5em;\\n}\\n\\n.fa-stack-1x,\\n.fa-stack-2x {\\n bottom: 0;\\n left: 0;\\n margin: auto;\\n position: absolute;\\n right: 0;\\n top: 0;\\n}\\n\\n.svg-inline--fa.fa-stack-1x {\\n height: 1em;\\n width: 1.25em;\\n}\\n.svg-inline--fa.fa-stack-2x {\\n height: 2em;\\n width: 2.5em;\\n}\\n\\n.fa-inverse {\\n color: #fff;\\n}\\n\\n.sr-only {\\n border: 0;\\n clip: rect(0, 0, 0, 0);\\n height: 1px;\\n margin: -1px;\\n overflow: hidden;\\n padding: 0;\\n position: absolute;\\n width: 1px;\\n}\\n\\n.sr-only-focusable:active, .sr-only-focusable:focus {\\n clip: auto;\\n height: auto;\\n margin: 0;\\n overflow: visible;\\n position: static;\\n width: auto;\\n}\\n\\n.svg-inline--fa .fa-primary {\\n fill: var(--fa-primary-color, currentColor);\\n opacity: 1;\\n opacity: var(--fa-primary-opacity, 1);\\n}\\n\\n.svg-inline--fa .fa-secondary {\\n fill: var(--fa-secondary-color, currentColor);\\n opacity: 0.4;\\n opacity: var(--fa-secondary-opacity, 0.4);\\n}\\n\\n.svg-inline--fa.fa-swap-opacity .fa-primary {\\n opacity: 0.4;\\n opacity: var(--fa-secondary-opacity, 0.4);\\n}\\n\\n.svg-inline--fa.fa-swap-opacity .fa-secondary {\\n opacity: 1;\\n opacity: var(--fa-primary-opacity, 1);\\n}\\n\\n.svg-inline--fa mask .fa-primary,\\n.svg-inline--fa mask .fa-secondary {\\n fill: black;\\n}\\n\\n.fad.fa-inverse {\\n color: #fff;\\n}\";\n\nfunction css() {\n var dfp = DEFAULT_FAMILY_PREFIX;\n var drc = DEFAULT_REPLACEMENT_CLASS;\n var fp = config.familyPrefix;\n var rc = config.replacementClass;\n var s = baseStyles;\n\n if (fp !== dfp || rc !== drc) {\n var dPatt = new RegExp(\"\\\\.\".concat(dfp, \"\\\\-\"), 'g');\n var customPropPatt = new RegExp(\"\\\\--\".concat(dfp, \"\\\\-\"), 'g');\n var rPatt = new RegExp(\"\\\\.\".concat(drc), 'g');\n s = s.replace(dPatt, \".\".concat(fp, \"-\")).replace(customPropPatt, \"--\".concat(fp, \"-\")).replace(rPatt, \".\".concat(rc));\n }\n\n return s;\n}\n\nvar Library =\n/*#__PURE__*/\nfunction () {\n function Library() {\n _classCallCheck(this, Library);\n\n this.definitions = {};\n }\n\n _createClass(Library, [{\n key: \"add\",\n value: function add() {\n var _this = this;\n\n for (var _len = arguments.length, definitions = new Array(_len), _key = 0; _key < _len; _key++) {\n definitions[_key] = arguments[_key];\n }\n\n var additions = definitions.reduce(this._pullDefinitions, {});\n Object.keys(additions).forEach(function (key) {\n _this.definitions[key] = _objectSpread({}, _this.definitions[key] || {}, additions[key]);\n defineIcons(key, additions[key]);\n build();\n });\n }\n }, {\n key: \"reset\",\n value: function reset() {\n this.definitions = {};\n }\n }, {\n key: \"_pullDefinitions\",\n value: function _pullDefinitions(additions, definition) {\n var normalized = definition.prefix && definition.iconName && definition.icon ? {\n 0: definition\n } : definition;\n Object.keys(normalized).map(function (key) {\n var _normalized$key = normalized[key],\n prefix = _normalized$key.prefix,\n iconName = _normalized$key.iconName,\n icon = _normalized$key.icon;\n if (!additions[prefix]) additions[prefix] = {};\n additions[prefix][iconName] = icon;\n });\n return additions;\n }\n }]);\n\n return Library;\n}();\n\nfunction ensureCss() {\n if (config.autoAddCss && !_cssInserted) {\n insertCss(css());\n _cssInserted = true;\n }\n}\n\nfunction apiObject(val, abstractCreator) {\n Object.defineProperty(val, 'abstract', {\n get: abstractCreator\n });\n Object.defineProperty(val, 'html', {\n get: function get() {\n return val.abstract.map(function (a) {\n return toHtml(a);\n });\n }\n });\n Object.defineProperty(val, 'node', {\n get: function get() {\n if (!IS_DOM) return;\n var container = DOCUMENT.createElement('div');\n container.innerHTML = val.html;\n return container.children;\n }\n });\n return val;\n}\n\nfunction findIconDefinition(iconLookup) {\n var _iconLookup$prefix = iconLookup.prefix,\n prefix = _iconLookup$prefix === void 0 ? 'fa' : _iconLookup$prefix,\n iconName = iconLookup.iconName;\n if (!iconName) return;\n return iconFromMapping(library.definitions, prefix, iconName) || iconFromMapping(namespace.styles, prefix, iconName);\n}\n\nfunction resolveIcons(next) {\n return function (maybeIconDefinition) {\n var params = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n var iconDefinition = (maybeIconDefinition || {}).icon ? maybeIconDefinition : findIconDefinition(maybeIconDefinition || {});\n var mask = params.mask;\n\n if (mask) {\n mask = (mask || {}).icon ? mask : findIconDefinition(mask || {});\n }\n\n return next(iconDefinition, _objectSpread({}, params, {\n mask: mask\n }));\n };\n}\n\nvar library = new Library();\n\nvar noAuto = function noAuto() {\n config.autoReplaceSvg = false;\n config.observeMutations = false;\n disconnect();\n};\n\nvar _cssInserted = false;\nvar dom = {\n i2svg: function i2svg() {\n var params = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n if (IS_DOM) {\n ensureCss();\n var _params$node = params.node,\n node = _params$node === void 0 ? DOCUMENT : _params$node,\n _params$callback = params.callback,\n callback = _params$callback === void 0 ? function () {} : _params$callback;\n\n if (config.searchPseudoElements) {\n searchPseudoElements(node);\n }\n\n return onTree(node, callback);\n } else {\n return picked.reject('Operation requires a DOM of some kind.');\n }\n },\n css: css,\n insertCss: function insertCss$$1() {\n if (!_cssInserted) {\n insertCss(css());\n _cssInserted = true;\n }\n },\n watch: function watch() {\n var params = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n var autoReplaceSvgRoot = params.autoReplaceSvgRoot,\n observeMutationsRoot = params.observeMutationsRoot;\n\n if (config.autoReplaceSvg === false) {\n config.autoReplaceSvg = true;\n }\n\n config.observeMutations = true;\n domready(function () {\n autoReplace({\n autoReplaceSvgRoot: autoReplaceSvgRoot\n });\n observe({\n treeCallback: onTree,\n nodeCallback: onNode,\n pseudoElementsCallback: searchPseudoElements,\n observeMutationsRoot: observeMutationsRoot\n });\n });\n }\n};\nvar parse = {\n transform: function transform(transformString) {\n return parseTransformString(transformString);\n }\n};\nvar icon = resolveIcons(function (iconDefinition) {\n var params = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n var _params$transform = params.transform,\n transform = _params$transform === void 0 ? meaninglessTransform : _params$transform,\n _params$symbol = params.symbol,\n symbol = _params$symbol === void 0 ? false : _params$symbol,\n _params$mask = params.mask,\n mask = _params$mask === void 0 ? null : _params$mask,\n _params$maskId = params.maskId,\n maskId = _params$maskId === void 0 ? null : _params$maskId,\n _params$title = params.title,\n title = _params$title === void 0 ? null : _params$title,\n _params$titleId = params.titleId,\n titleId = _params$titleId === void 0 ? null : _params$titleId,\n _params$classes = params.classes,\n classes = _params$classes === void 0 ? [] : _params$classes,\n _params$attributes = params.attributes,\n attributes = _params$attributes === void 0 ? {} : _params$attributes,\n _params$styles = params.styles,\n styles = _params$styles === void 0 ? {} : _params$styles;\n if (!iconDefinition) return;\n var prefix = iconDefinition.prefix,\n iconName = iconDefinition.iconName,\n icon = iconDefinition.icon;\n return apiObject(_objectSpread({\n type: 'icon'\n }, iconDefinition), function () {\n ensureCss();\n\n if (config.autoA11y) {\n if (title) {\n attributes['aria-labelledby'] = \"\".concat(config.replacementClass, \"-title-\").concat(titleId || nextUniqueId());\n } else {\n attributes['aria-hidden'] = 'true';\n attributes['focusable'] = 'false';\n }\n }\n\n return makeInlineSvgAbstract({\n icons: {\n main: asFoundIcon(icon),\n mask: mask ? asFoundIcon(mask.icon) : {\n found: false,\n width: null,\n height: null,\n icon: {}\n }\n },\n prefix: prefix,\n iconName: iconName,\n transform: _objectSpread({}, meaninglessTransform, transform),\n symbol: symbol,\n title: title,\n maskId: maskId,\n titleId: titleId,\n extra: {\n attributes: attributes,\n styles: styles,\n classes: classes\n }\n });\n });\n});\n\nvar text = function text(content) {\n var params = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n var _params$transform2 = params.transform,\n transform = _params$transform2 === void 0 ? meaninglessTransform : _params$transform2,\n _params$title2 = params.title,\n title = _params$title2 === void 0 ? null : _params$title2,\n _params$classes2 = params.classes,\n classes = _params$classes2 === void 0 ? [] : _params$classes2,\n _params$attributes2 = params.attributes,\n attributes = _params$attributes2 === void 0 ? {} : _params$attributes2,\n _params$styles2 = params.styles,\n styles = _params$styles2 === void 0 ? {} : _params$styles2;\n return apiObject({\n type: 'text',\n content: content\n }, function () {\n ensureCss();\n return makeLayersTextAbstract({\n content: content,\n transform: _objectSpread({}, meaninglessTransform, transform),\n title: title,\n extra: {\n attributes: attributes,\n styles: styles,\n classes: [\"\".concat(config.familyPrefix, \"-layers-text\")].concat(_toConsumableArray(classes))\n }\n });\n });\n};\n\nvar counter = function counter(content) {\n var params = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n var _params$title3 = params.title,\n title = _params$title3 === void 0 ? null : _params$title3,\n _params$classes3 = params.classes,\n classes = _params$classes3 === void 0 ? [] : _params$classes3,\n _params$attributes3 = params.attributes,\n attributes = _params$attributes3 === void 0 ? {} : _params$attributes3,\n _params$styles3 = params.styles,\n styles = _params$styles3 === void 0 ? {} : _params$styles3;\n return apiObject({\n type: 'counter',\n content: content\n }, function () {\n ensureCss();\n return makeLayersCounterAbstract({\n content: content.toString(),\n title: title,\n extra: {\n attributes: attributes,\n styles: styles,\n classes: [\"\".concat(config.familyPrefix, \"-layers-counter\")].concat(_toConsumableArray(classes))\n }\n });\n });\n};\n\nvar layer = function layer(assembler) {\n var params = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n var _params$classes4 = params.classes,\n classes = _params$classes4 === void 0 ? [] : _params$classes4;\n return apiObject({\n type: 'layer'\n }, function () {\n ensureCss();\n var children = [];\n assembler(function (args) {\n Array.isArray(args) ? args.map(function (a) {\n children = children.concat(a.abstract);\n }) : children = children.concat(args.abstract);\n });\n return [{\n tag: 'span',\n attributes: {\n class: [\"\".concat(config.familyPrefix, \"-layers\")].concat(_toConsumableArray(classes)).join(' ')\n },\n children: children\n }];\n });\n};\n\nvar api = {\n noAuto: noAuto,\n config: config,\n dom: dom,\n library: library,\n parse: parse,\n findIconDefinition: findIconDefinition,\n icon: icon,\n text: text,\n counter: counter,\n layer: layer,\n toHtml: toHtml\n};\n\nvar autoReplace = function autoReplace() {\n var params = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n var _params$autoReplaceSv = params.autoReplaceSvgRoot,\n autoReplaceSvgRoot = _params$autoReplaceSv === void 0 ? DOCUMENT : _params$autoReplaceSv;\n if ((Object.keys(namespace.styles).length > 0 || config.autoFetchSvg) && IS_DOM && config.autoReplaceSvg) api.dom.i2svg({\n node: autoReplaceSvgRoot\n });\n};\n\nexport { icon, noAuto, config, toHtml, layer, text, counter, library, dom, parse, findIconDefinition };","import useUpdatedRef from './useUpdatedRef';\nimport { useEffect } from 'react';\n/**\n * Attach a callback that fires when a component unmounts\n *\n * @param fn Handler to run when the component unmounts\n * @category effects\n */\n\nexport default function useWillUnmount(fn) {\n var onUnmount = useUpdatedRef(fn);\n useEffect(function () {\n return function () {\n return onUnmount.current();\n };\n }, []);\n}","import { useRef } from 'react';\n/**\n * Returns a ref that is immediately updated with the new value\n *\n * @param value The Ref value\n * @category refs\n */\n\nexport default function useUpdatedRef(value) {\n var valueRef = useRef(value);\n valueRef.current = value;\n return valueRef;\n}","'use strict';\n\nfunction _typeof(obj) { if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\nexports.__esModule = true;\n\nvar _extends = Object.assign || function (target) {\n for (var i = 1; i < arguments.length; i++) {\n var source = arguments[i];\n\n for (var key in source) {\n if (Object.prototype.hasOwnProperty.call(source, key)) {\n target[key] = source[key];\n }\n }\n }\n\n return target;\n};\n\nvar _activeElement = require('dom-helpers/activeElement');\n\nvar _activeElement2 = _interopRequireDefault(_activeElement);\n\nvar _contains = require('dom-helpers/query/contains');\n\nvar _contains2 = _interopRequireDefault(_contains);\n\nvar _inDOM = require('dom-helpers/util/inDOM');\n\nvar _inDOM2 = _interopRequireDefault(_inDOM);\n\nvar _propTypes = require('prop-types');\n\nvar _propTypes2 = _interopRequireDefault(_propTypes);\n\nvar _componentOrElement = require('prop-types-extra/lib/componentOrElement');\n\nvar _componentOrElement2 = _interopRequireDefault(_componentOrElement);\n\nvar _deprecated = require('prop-types-extra/lib/deprecated');\n\nvar _deprecated2 = _interopRequireDefault(_deprecated);\n\nvar _elementType = require('prop-types-extra/lib/elementType');\n\nvar _elementType2 = _interopRequireDefault(_elementType);\n\nvar _react = require('react');\n\nvar _react2 = _interopRequireDefault(_react);\n\nvar _reactDom = require('react-dom');\n\nvar _reactDom2 = _interopRequireDefault(_reactDom);\n\nvar _warning = require('warning');\n\nvar _warning2 = _interopRequireDefault(_warning);\n\nvar _ModalManager = require('./ModalManager');\n\nvar _ModalManager2 = _interopRequireDefault(_ModalManager);\n\nvar _Portal = require('./Portal');\n\nvar _Portal2 = _interopRequireDefault(_Portal);\n\nvar _RefHolder = require('./RefHolder');\n\nvar _RefHolder2 = _interopRequireDefault(_RefHolder);\n\nvar _addEventListener = require('./utils/addEventListener');\n\nvar _addEventListener2 = _interopRequireDefault(_addEventListener);\n\nvar _addFocusListener = require('./utils/addFocusListener');\n\nvar _addFocusListener2 = _interopRequireDefault(_addFocusListener);\n\nvar _getContainer = require('./utils/getContainer');\n\nvar _getContainer2 = _interopRequireDefault(_getContainer);\n\nvar _ownerDocument = require('./utils/ownerDocument');\n\nvar _ownerDocument2 = _interopRequireDefault(_ownerDocument);\n\nfunction _interopRequireDefault(obj) {\n return obj && obj.__esModule ? obj : {\n default: obj\n };\n}\n\nfunction _classCallCheck(instance, Constructor) {\n if (!(instance instanceof Constructor)) {\n throw new TypeError(\"Cannot call a class as a function\");\n }\n}\n\nfunction _possibleConstructorReturn(self, call) {\n if (!self) {\n throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\");\n }\n\n return call && (_typeof(call) === \"object\" || typeof call === \"function\") ? call : self;\n}\n\nfunction _inherits(subClass, superClass) {\n if (typeof superClass !== \"function\" && superClass !== null) {\n throw new TypeError(\"Super expression must either be null or a function, not \" + _typeof(superClass));\n }\n\n subClass.prototype = Object.create(superClass && superClass.prototype, {\n constructor: {\n value: subClass,\n enumerable: false,\n writable: true,\n configurable: true\n }\n });\n if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;\n}\n/* eslint-disable react/prop-types */\n\n\nvar modalManager = new _ModalManager2.default();\n/**\n * Love them or hate them, `` provides a solid foundation for creating dialogs, lightboxes, or whatever else.\n * The Modal component renders its `children` node in front of a backdrop component.\n *\n * The Modal offers a few helpful features over using just a `` component and some styles:\n *\n * - Manages dialog stacking when one-at-a-time just isn't enough.\n * - Creates a backdrop, for disabling interaction below the modal.\n * - It properly manages focus; moving to the modal content, and keeping it there until the modal is closed.\n * - It disables scrolling of the page content while open.\n * - Adds the appropriate ARIA roles are automatically.\n * - Easily pluggable animations via a `` component.\n *\n * Note that, in the same way the backdrop element prevents users from clicking or interacting\n * with the page content underneath the Modal, Screen readers also need to be signaled to not to\n * interact with page content while the Modal is open. To do this, we use a common technique of applying\n * the `aria-hidden='true'` attribute to the non-Modal elements in the Modal `container`. This means that for\n * a Modal to be truly modal, it should have a `container` that is _outside_ your app's\n * React hierarchy (such as the default: document.body).\n */\n\nvar Modal = function (_React$Component) {\n _inherits(Modal, _React$Component);\n\n function Modal() {\n var _temp, _this, _ret;\n\n _classCallCheck(this, Modal);\n\n for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {\n args[_key] = arguments[_key];\n }\n\n return _ret = (_temp = (_this = _possibleConstructorReturn(this, _React$Component.call.apply(_React$Component, [this].concat(args))), _this), _initialiseProps.call(_this), _temp), _possibleConstructorReturn(_this, _ret);\n }\n\n Modal.prototype.omitProps = function omitProps(props, propTypes) {\n var keys = Object.keys(props);\n var newProps = {};\n keys.map(function (prop) {\n if (!Object.prototype.hasOwnProperty.call(propTypes, prop)) {\n newProps[prop] = props[prop];\n }\n });\n return newProps;\n };\n\n Modal.prototype.render = function render() {\n var _props = this.props,\n show = _props.show,\n container = _props.container,\n children = _props.children,\n Transition = _props.transition,\n backdrop = _props.backdrop,\n className = _props.className,\n style = _props.style,\n onExit = _props.onExit,\n onExiting = _props.onExiting,\n onEnter = _props.onEnter,\n onEntering = _props.onEntering,\n onEntered = _props.onEntered;\n\n var dialog = _react2.default.Children.only(children);\n\n var filteredProps = this.omitProps(this.props, Modal.propTypes);\n var mountModal = show || Transition && !this.state.exited;\n\n if (!mountModal) {\n return null;\n }\n\n var _dialog$props = dialog.props,\n role = _dialog$props.role,\n tabIndex = _dialog$props.tabIndex;\n\n if (role === undefined || tabIndex === undefined) {\n dialog = (0, _react.cloneElement)(dialog, {\n role: role === undefined ? 'document' : role,\n tabIndex: tabIndex == null ? '-1' : tabIndex\n });\n }\n\n if (Transition) {\n dialog = _react2.default.createElement(Transition, {\n appear: true,\n unmountOnExit: true,\n 'in': show,\n onExit: onExit,\n onExiting: onExiting,\n onExited: this.handleHidden,\n onEnter: onEnter,\n onEntering: onEntering,\n onEntered: onEntered\n }, dialog);\n }\n\n return _react2.default.createElement(_Portal2.default, {\n ref: this.setMountNode,\n container: container,\n onRendered: this.onPortalRendered\n }, _react2.default.createElement('div', _extends({\n ref: this.setModalNodeRef,\n role: role || 'dialog'\n }, filteredProps, {\n style: style,\n className: className\n }), backdrop && this.renderBackdrop(), _react2.default.createElement(_RefHolder2.default, {\n ref: this.setDialogRef\n }, dialog)));\n };\n\n Modal.prototype.UNSAFE_componentWillReceiveProps = function UNSAFE_componentWillReceiveProps(nextProps) {\n if (nextProps.show) {\n this.setState({\n exited: false\n });\n } else if (!nextProps.transition) {\n // Otherwise let handleHidden take care of marking exited.\n this.setState({\n exited: true\n });\n }\n };\n\n Modal.prototype.UNSAFE_componentWillUpdate = function UNSAFE_componentWillUpdate(nextProps) {\n if (!this.props.show && nextProps.show) {\n this.checkForFocus();\n }\n };\n\n Modal.prototype.componentDidMount = function componentDidMount() {\n this._isMounted = true;\n\n if (this.props.show) {\n this.onShow();\n }\n };\n\n Modal.prototype.componentDidUpdate = function componentDidUpdate(prevProps) {\n var transition = this.props.transition;\n\n if (prevProps.show && !this.props.show && !transition) {\n // Otherwise handleHidden will call this.\n this.onHide();\n } else if (!prevProps.show && this.props.show) {\n this.onShow();\n }\n };\n\n Modal.prototype.componentWillUnmount = function componentWillUnmount() {\n var _props2 = this.props,\n show = _props2.show,\n transition = _props2.transition;\n this._isMounted = false;\n\n if (show || transition && !this.state.exited) {\n this.onHide();\n }\n };\n\n Modal.prototype.autoFocus = function autoFocus() {\n if (!this.props.autoFocus) {\n return;\n }\n\n var dialogElement = this.getDialogElement();\n var currentActiveElement = (0, _activeElement2.default)((0, _ownerDocument2.default)(this));\n\n if (dialogElement && !(0, _contains2.default)(dialogElement, currentActiveElement)) {\n this.lastFocus = currentActiveElement;\n\n if (!dialogElement.hasAttribute('tabIndex')) {\n (0, _warning2.default)(false, 'The modal content node does not accept focus. For the benefit of ' + 'assistive technologies, the tabIndex of the node is being set ' + 'to \"-1\".');\n dialogElement.setAttribute('tabIndex', -1);\n }\n\n dialogElement.focus();\n }\n };\n\n Modal.prototype.restoreLastFocus = function restoreLastFocus() {\n // Support: <=IE11 doesn't support `focus()` on svg elements (RB: #917)\n if (this.lastFocus && this.lastFocus.focus) {\n this.lastFocus.focus();\n this.lastFocus = null;\n }\n };\n\n Modal.prototype.getDialogElement = function getDialogElement() {\n return _reactDom2.default.findDOMNode(this.dialog);\n };\n\n Modal.prototype.isTopModal = function isTopModal() {\n return this.props.manager.isTopModal(this);\n };\n\n return Modal;\n}(_react2.default.Component);\n\nModal.propTypes = _extends({}, _Portal2.default.propTypes, {\n /**\n * Set the visibility of the Modal\n */\n show: _propTypes2.default.bool,\n\n /**\n * A Node, Component instance, or function that returns either. The Modal is appended to it's container element.\n *\n * For the sake of assistive technologies, the container should usually be the document body, so that the rest of the\n * page content can be placed behind a virtual backdrop as well as a visual one.\n */\n container: _propTypes2.default.oneOfType([_componentOrElement2.default, _propTypes2.default.func]),\n\n /**\n * A callback fired when the Modal is opening.\n */\n onShow: _propTypes2.default.func,\n\n /**\n * A callback fired when either the backdrop is clicked, or the escape key is pressed.\n *\n * The `onHide` callback only signals intent from the Modal,\n * you must actually set the `show` prop to `false` for the Modal to close.\n */\n onHide: _propTypes2.default.func,\n\n /**\n * Include a backdrop component.\n */\n backdrop: _propTypes2.default.oneOfType([_propTypes2.default.bool, _propTypes2.default.oneOf(['static'])]),\n\n /**\n * A function that returns a backdrop component. Useful for custom\n * backdrop rendering.\n *\n * ```js\n * renderBackdrop={props => }\n * ```\n */\n renderBackdrop: _propTypes2.default.func,\n\n /**\n * A callback fired when the escape key, if specified in `keyboard`, is pressed.\n */\n onEscapeKeyDown: _propTypes2.default.func,\n\n /**\n * Support for this function will be deprecated. Please use `onEscapeKeyDown` instead\n * A callback fired when the escape key, if specified in `keyboard`, is pressed.\n * @deprecated\n */\n onEscapeKeyUp: (0, _deprecated2.default)(_propTypes2.default.func, 'Please use onEscapeKeyDown instead for consistency'),\n\n /**\n * A callback fired when the backdrop, if specified, is clicked.\n */\n onBackdropClick: _propTypes2.default.func,\n\n /**\n * A style object for the backdrop component.\n */\n backdropStyle: _propTypes2.default.object,\n\n /**\n * A css class or classes for the backdrop component.\n */\n backdropClassName: _propTypes2.default.string,\n\n /**\n * A css class or set of classes applied to the modal container when the modal is open,\n * and removed when it is closed.\n */\n containerClassName: _propTypes2.default.string,\n\n /**\n * Close the modal when escape key is pressed\n */\n keyboard: _propTypes2.default.bool,\n\n /**\n * A `react-transition-group@2.0.0` `` component used\n * to control animations for the dialog component.\n */\n transition: _elementType2.default,\n\n /**\n * A `react-transition-group@2.0.0` `` component used\n * to control animations for the backdrop components.\n */\n backdropTransition: _elementType2.default,\n\n /**\n * When `true` The modal will automatically shift focus to itself when it opens, and\n * replace it to the last focused element when it closes. This also\n * works correctly with any Modal children that have the `autoFocus` prop.\n *\n * Generally this should never be set to `false` as it makes the Modal less\n * accessible to assistive technologies, like screen readers.\n */\n autoFocus: _propTypes2.default.bool,\n\n /**\n * When `true` The modal will prevent focus from leaving the Modal while open.\n *\n * Generally this should never be set to `false` as it makes the Modal less\n * accessible to assistive technologies, like screen readers.\n */\n enforceFocus: _propTypes2.default.bool,\n\n /**\n * When `true` The modal will restore focus to previously focused element once\n * modal is hidden\n */\n restoreFocus: _propTypes2.default.bool,\n\n /**\n * Callback fired before the Modal transitions in\n */\n onEnter: _propTypes2.default.func,\n\n /**\n * Callback fired as the Modal begins to transition in\n */\n onEntering: _propTypes2.default.func,\n\n /**\n * Callback fired after the Modal finishes transitioning in\n */\n onEntered: _propTypes2.default.func,\n\n /**\n * Callback fired right before the Modal transitions out\n */\n onExit: _propTypes2.default.func,\n\n /**\n * Callback fired as the Modal begins to transition out\n */\n onExiting: _propTypes2.default.func,\n\n /**\n * Callback fired after the Modal finishes transitioning out\n */\n onExited: _propTypes2.default.func,\n\n /**\n * A ModalManager instance used to track and manage the state of open\n * Modals. Useful when customizing how modals interact within a container\n */\n manager: _propTypes2.default.object.isRequired\n});\nModal.defaultProps = {\n show: false,\n backdrop: true,\n keyboard: true,\n autoFocus: true,\n enforceFocus: true,\n restoreFocus: true,\n onHide: function onHide() {},\n manager: modalManager,\n renderBackdrop: function renderBackdrop(props) {\n return _react2.default.createElement('div', props);\n }\n};\n\nvar _initialiseProps = function _initialiseProps() {\n var _this2 = this;\n\n this.state = {\n exited: !this.props.show\n };\n\n this.renderBackdrop = function () {\n var _props3 = _this2.props,\n backdropStyle = _props3.backdropStyle,\n backdropClassName = _props3.backdropClassName,\n renderBackdrop = _props3.renderBackdrop,\n Transition = _props3.backdropTransition;\n\n var backdropRef = function backdropRef(ref) {\n return _this2.backdrop = ref;\n };\n\n var backdrop = renderBackdrop({\n ref: backdropRef,\n style: backdropStyle,\n className: backdropClassName,\n onClick: _this2.handleBackdropClick\n });\n\n if (Transition) {\n backdrop = _react2.default.createElement(Transition, {\n appear: true,\n 'in': _this2.props.show\n }, backdrop);\n }\n\n return backdrop;\n };\n\n this.onPortalRendered = function () {\n _this2.autoFocus();\n\n if (_this2.props.onShow) {\n _this2.props.onShow();\n }\n };\n\n this.onShow = function () {\n var doc = (0, _ownerDocument2.default)(_this2);\n var container = (0, _getContainer2.default)(_this2.props.container, doc.body);\n\n _this2.props.manager.add(_this2, container, _this2.props.containerClassName);\n\n _this2._onDocumentKeydownListener = (0, _addEventListener2.default)(doc, 'keydown', _this2.handleDocumentKeyDown);\n _this2._onDocumentKeyupListener = (0, _addEventListener2.default)(doc, 'keyup', _this2.handleDocumentKeyUp);\n _this2._onFocusinListener = (0, _addFocusListener2.default)(_this2.enforceFocus);\n };\n\n this.onHide = function () {\n _this2.props.manager.remove(_this2);\n\n _this2._onDocumentKeydownListener.remove();\n\n _this2._onDocumentKeyupListener.remove();\n\n _this2._onFocusinListener.remove();\n\n if (_this2.props.restoreFocus) {\n _this2.restoreLastFocus();\n }\n };\n\n this.setMountNode = function (ref) {\n _this2.mountNode = ref ? ref.getMountNode() : ref;\n };\n\n this.setModalNodeRef = function (ref) {\n _this2.modalNode = ref;\n };\n\n this.setDialogRef = function (ref) {\n _this2.dialog = ref;\n };\n\n this.handleHidden = function () {\n _this2.setState({\n exited: true\n });\n\n _this2.onHide();\n\n if (_this2.props.onExited) {\n var _props4;\n\n (_props4 = _this2.props).onExited.apply(_props4, arguments);\n }\n };\n\n this.handleBackdropClick = function (e) {\n if (e.target !== e.currentTarget) {\n return;\n }\n\n if (_this2.props.onBackdropClick) {\n _this2.props.onBackdropClick(e);\n }\n\n if (_this2.props.backdrop === true) {\n _this2.props.onHide();\n }\n };\n\n this.handleDocumentKeyDown = function (e) {\n if (_this2.props.keyboard && e.keyCode === 27 && _this2.isTopModal()) {\n if (_this2.props.onEscapeKeyDown) {\n _this2.props.onEscapeKeyDown(e);\n }\n\n _this2.props.onHide();\n }\n };\n\n this.handleDocumentKeyUp = function (e) {\n if (_this2.props.keyboard && e.keyCode === 27 && _this2.isTopModal()) {\n if (_this2.props.onEscapeKeyUp) {\n _this2.props.onEscapeKeyUp(e);\n }\n }\n };\n\n this.checkForFocus = function () {\n if (_inDOM2.default) {\n _this2.lastFocus = (0, _activeElement2.default)();\n }\n };\n\n this.enforceFocus = function () {\n if (!_this2.props.enforceFocus || !_this2._isMounted || !_this2.isTopModal()) {\n return;\n }\n\n var dialogElement = _this2.getDialogElement();\n\n var currentActiveElement = (0, _activeElement2.default)((0, _ownerDocument2.default)(_this2));\n\n if (dialogElement && !(0, _contains2.default)(dialogElement, currentActiveElement)) {\n dialogElement.focus();\n }\n };\n};\n\nModal.Manager = _ModalManager2.default;\nexports.default = Modal;\nmodule.exports = exports['default'];","module.exports = function (module) {\n if (!module.webpackPolyfill) {\n module.deprecate = function () {};\n\n module.paths = []; // module.parent = undefined by default\n\n if (!module.children) module.children = [];\n Object.defineProperty(module, \"loaded\", {\n enumerable: true,\n get: function get() {\n return module.l;\n }\n });\n Object.defineProperty(module, \"id\", {\n enumerable: true,\n get: function get() {\n return module.i;\n }\n });\n module.webpackPolyfill = 1;\n }\n\n return module;\n};","function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {\n try {\n var info = gen[key](arg);\n var value = info.value;\n } catch (error) {\n reject(error);\n return;\n }\n\n if (info.done) {\n resolve(value);\n } else {\n Promise.resolve(value).then(_next, _throw);\n }\n}\n\nfunction _asyncToGenerator(fn) {\n return function () {\n var self = this,\n args = arguments;\n return new Promise(function (resolve, reject) {\n var gen = fn.apply(self, args);\n\n function _next(value) {\n asyncGeneratorStep(gen, resolve, reject, _next, _throw, \"next\", value);\n }\n\n function _throw(err) {\n asyncGeneratorStep(gen, resolve, reject, _next, _throw, \"throw\", err);\n }\n\n _next(undefined);\n });\n };\n}\n\nmodule.exports = _asyncToGenerator;","\"use strict\";\n\nvar _interopRequireDefault = require(\"@babel/runtime/helpers/interopRequireDefault\");\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports[\"default\"] = void 0;\n\nvar _classCallCheck2 = _interopRequireDefault(require(\"@babel/runtime/helpers/classCallCheck\"));\n\nvar _createClass2 = _interopRequireDefault(require(\"@babel/runtime/helpers/createClass\"));\n\nvar _axios = _interopRequireDefault(require(\"axios\")); // Config flag to change the source of data retrieval endpoint\n\n\nvar useLocalData = false;\nvar BASE_URL = 'http://localhost:3123/data/mock-response-'; // Default headers for API calls\n\nvar defaultHeaders = {\n 'Content-Type': 'application/json'\n};\n\nvar APIUtils =\n/*#__PURE__*/\nfunction () {\n function APIUtils() {\n (0, _classCallCheck2[\"default\"])(this, APIUtils);\n }\n\n (0, _createClass2[\"default\"])(APIUtils, [{\n key: \"getRequest\",\n\n /**\n * Construct GET request with parameters,\n * @param {String} baseURL - base URL of the server hosting master file\n * @param {String} masterFile - master file ID on the server\n * @param {String} urlEndPoint - end point to make the network request\n * @param {Headers} headers\n */\n value: function getRequest(baseURL, masterFile, urlEndPoint) {\n var headers = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : defaultHeaders;\n var url = useLocalData ? \"\".concat(BASE_URL).concat(urlEndPoint) : \"\".concat(baseURL, \"/master_files/\").concat(masterFile, \"/\").concat(urlEndPoint);\n return _axios[\"default\"].get(url, {\n headers: headers\n });\n }\n /**\n * Construct POST request with parameters,\n * @param {String} baseURL - base URL of the server hosting master file\n * @param {String} masterFile - master file ID on the server\n * @param {String} urlEndPoint - end point to make the network request\n * @param {JSON} data - JSON data posting to the server\n * @param {Headers} headers\n */\n\n }, {\n key: \"postRequest\",\n value: function postRequest(baseURL, masterFile, urlEndPoint, data) {\n var headers = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : defaultHeaders;\n var url = useLocalData ? \"\".concat(BASE_URL).concat(urlEndPoint) : \"\".concat(baseURL, \"/master_files/\").concat(masterFile, \"/\").concat(urlEndPoint);\n return _axios[\"default\"].post(url, data, {\n headers: headers\n });\n }\n /**\n * Construct HEAD request with parameters,\n * @param {String} baseURL - base URL of the server hosting master file\n * @param {String} masterFile - master file ID on the server\n * @param {String} urlEndPoint - end point to make the network request\n * @param {Headers} headers\n */\n\n }, {\n key: \"headRequest\",\n value: function headRequest(baseURL, masterFile, urlEndPoint) {\n var headers = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : defaultHeaders;\n var url = useLocalData ? \"\".concat(BASE_URL).concat(urlEndPoint) : \"\".concat(baseURL, \"/master_files/\").concat(masterFile, \"/\").concat(urlEndPoint);\n return _axios[\"default\"].head(url, {\n headers: headers\n });\n }\n }]);\n return APIUtils;\n}();\n\nexports[\"default\"] = APIUtils;","var arrayLikeToArray = require(\"./arrayLikeToArray\");\n\nfunction _unsupportedIterableToArray(o, minLen) {\n if (!o) return;\n if (typeof o === \"string\") return arrayLikeToArray(o, minLen);\n var n = Object.prototype.toString.call(o).slice(8, -1);\n if (n === \"Object\" && o.constructor) n = o.constructor.name;\n if (n === \"Map\" || n === \"Set\") return Array.from(o);\n if (n === \"Arguments\" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return arrayLikeToArray(o, minLen);\n}\n\nmodule.exports = _unsupportedIterableToArray;","module.exports = function (it) {\n return typeof it === 'object' ? it !== null : typeof it === 'function';\n};\n","module.exports = function (bitmap, value) {\n return {\n enumerable: !(bitmap & 1),\n configurable: !(bitmap & 2),\n writable: !(bitmap & 4),\n value: value\n };\n};\n","// to indexed object, toObject with fallback for non-array-like ES3 strings\nvar IObject = require('./_iobject');\nvar defined = require('./_defined');\nmodule.exports = function (it) {\n return IObject(defined(it));\n};\n","var toString = {}.toString;\n\nmodule.exports = function (it) {\n return toString.call(it).slice(8, -1);\n};\n","// 7.1.4 ToInteger\nvar ceil = Math.ceil;\nvar floor = Math.floor;\nmodule.exports = function (it) {\n return isNaN(it = +it) ? 0 : (it > 0 ? floor : ceil)(it);\n};\n","var shared = require('./_shared')('keys');\nvar uid = require('./_uid');\nmodule.exports = function (key) {\n return shared[key] || (shared[key] = uid(key));\n};\n","'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.default = createChainableTypeChecker;\n/**\n * Copyright 2013-present, Facebook, Inc.\n * All rights reserved.\n *\n * This source code is licensed under the BSD-style license found in the\n * LICENSE file in the root directory of this source tree. An additional grant\n * of patent rights can be found in the PATENTS file in the same directory.\n */\n// Mostly taken from ReactPropTypes.\n\nfunction createChainableTypeChecker(validate) {\n function checkType(isRequired, props, propName, componentName, location, propFullName) {\n var componentNameSafe = componentName || '<>';\n var propFullNameSafe = propFullName || propName;\n\n if (props[propName] == null) {\n if (isRequired) {\n return new Error('Required ' + location + ' `' + propFullNameSafe + '` was not specified ' + ('in `' + componentNameSafe + '`.'));\n }\n\n return null;\n }\n\n for (var _len = arguments.length, args = Array(_len > 6 ? _len - 6 : 0), _key = 6; _key < _len; _key++) {\n args[_key - 6] = arguments[_key];\n }\n\n return validate.apply(undefined, [props, propName, componentNameSafe, location, propFullNameSafe].concat(args));\n }\n\n var chainedCheckType = checkType.bind(null, false);\n chainedCheckType.isRequired = checkType.bind(null, true);\n return chainedCheckType;\n}\n\nmodule.exports = exports['default'];","\"use strict\";\n\nvar _interopRequireDefault = require(\"@babel/runtime/helpers/interopRequireDefault\");\n\nexports.__esModule = true;\nexports.default = exports.animationEnd = exports.animationDelay = exports.animationTiming = exports.animationDuration = exports.animationName = exports.transitionEnd = exports.transitionDuration = exports.transitionDelay = exports.transitionTiming = exports.transitionProperty = exports.transform = void 0;\n\nvar _inDOM = _interopRequireDefault(require(\"../util/inDOM\"));\n\nvar transform = 'transform';\nexports.transform = transform;\nvar prefix, transitionEnd, animationEnd;\nexports.animationEnd = animationEnd;\nexports.transitionEnd = transitionEnd;\nvar transitionProperty, transitionDuration, transitionTiming, transitionDelay;\nexports.transitionDelay = transitionDelay;\nexports.transitionTiming = transitionTiming;\nexports.transitionDuration = transitionDuration;\nexports.transitionProperty = transitionProperty;\nvar animationName, animationDuration, animationTiming, animationDelay;\nexports.animationDelay = animationDelay;\nexports.animationTiming = animationTiming;\nexports.animationDuration = animationDuration;\nexports.animationName = animationName;\n\nif (_inDOM.default) {\n var _getTransitionPropert = getTransitionProperties();\n\n prefix = _getTransitionPropert.prefix;\n exports.transitionEnd = transitionEnd = _getTransitionPropert.transitionEnd;\n exports.animationEnd = animationEnd = _getTransitionPropert.animationEnd;\n exports.transform = transform = prefix + \"-\" + transform;\n exports.transitionProperty = transitionProperty = prefix + \"-transition-property\";\n exports.transitionDuration = transitionDuration = prefix + \"-transition-duration\";\n exports.transitionDelay = transitionDelay = prefix + \"-transition-delay\";\n exports.transitionTiming = transitionTiming = prefix + \"-transition-timing-function\";\n exports.animationName = animationName = prefix + \"-animation-name\";\n exports.animationDuration = animationDuration = prefix + \"-animation-duration\";\n exports.animationTiming = animationTiming = prefix + \"-animation-delay\";\n exports.animationDelay = animationDelay = prefix + \"-animation-timing-function\";\n}\n\nvar _default = {\n transform: transform,\n end: transitionEnd,\n property: transitionProperty,\n timing: transitionTiming,\n delay: transitionDelay,\n duration: transitionDuration\n};\nexports.default = _default;\n\nfunction getTransitionProperties() {\n var style = document.createElement('div').style;\n var vendorMap = {\n O: function O(e) {\n return \"o\" + e.toLowerCase();\n },\n Moz: function Moz(e) {\n return e.toLowerCase();\n },\n Webkit: function Webkit(e) {\n return \"webkit\" + e;\n },\n ms: function ms(e) {\n return \"MS\" + e;\n }\n };\n var vendors = Object.keys(vendorMap);\n var transitionEnd, animationEnd;\n var prefix = '';\n\n for (var i = 0; i < vendors.length; i++) {\n var vendor = vendors[i];\n\n if (vendor + \"TransitionProperty\" in style) {\n prefix = \"-\" + vendor.toLowerCase();\n transitionEnd = vendorMap[vendor]('TransitionEnd');\n animationEnd = vendorMap[vendor]('AnimationEnd');\n break;\n }\n }\n\n if (!transitionEnd && 'transitionProperty' in style) transitionEnd = 'transitionend';\n if (!animationEnd && 'animationName' in style) animationEnd = 'animationend';\n style = null;\n return {\n animationEnd: animationEnd,\n transitionEnd: transitionEnd,\n prefix: prefix\n };\n}","module.exports = {};\n","\"use strict\";\n\nvar _interopRequireDefault = require(\"@babel/runtime/helpers/interopRequireDefault\");\n\nexports.__esModule = true;\nexports.default = void 0;\n\nvar _inDOM = _interopRequireDefault(require(\"../util/inDOM\"));\n\nvar on = function on() {};\n\nif (_inDOM.default) {\n on = function () {\n if (document.addEventListener) return function (node, eventName, handler, capture) {\n return node.addEventListener(eventName, handler, capture || false);\n };else if (document.attachEvent) return function (node, eventName, handler) {\n return node.attachEvent('on' + eventName, function (e) {\n e = e || window.event;\n e.target = e.target || e.srcElement;\n e.currentTarget = node;\n handler.call(node, e);\n });\n };\n }();\n}\n\nvar _default = on;\nexports.default = _default;\nmodule.exports = exports[\"default\"];","\"use strict\";\n\nvar _interopRequireDefault = require(\"@babel/runtime/helpers/interopRequireDefault\");\n\nexports.__esModule = true;\nexports.default = void 0;\n\nvar _inDOM = _interopRequireDefault(require(\"../util/inDOM\"));\n\nvar off = function off() {};\n\nif (_inDOM.default) {\n off = function () {\n if (document.addEventListener) return function (node, eventName, handler, capture) {\n return node.removeEventListener(eventName, handler, capture || false);\n };else if (document.attachEvent) return function (node, eventName, handler) {\n return node.detachEvent('on' + eventName, handler);\n };\n }();\n}\n\nvar _default = off;\nexports.default = _default;\nmodule.exports = exports[\"default\"];","'use strict';\n\nfunction _typeof2(obj) { if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof2 = function _typeof2(obj) { return typeof obj; }; } else { _typeof2 = function _typeof2(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof2(obj); }\n\nexports.__esModule = true;\n\nvar _typeof = typeof Symbol === \"function\" && _typeof2(Symbol.iterator) === \"symbol\" ? function (obj) {\n return _typeof2(obj);\n} : function (obj) {\n return obj && typeof Symbol === \"function\" && obj.constructor === Symbol ? \"symbol\" : _typeof2(obj);\n};\n\nvar _react = require('react');\n\nvar _react2 = _interopRequireDefault(_react);\n\nvar _createChainableTypeChecker = require('./utils/createChainableTypeChecker');\n\nvar _createChainableTypeChecker2 = _interopRequireDefault(_createChainableTypeChecker);\n\nfunction _interopRequireDefault(obj) {\n return obj && obj.__esModule ? obj : {\n default: obj\n };\n}\n\nfunction elementType(props, propName, componentName, location, propFullName) {\n var propValue = props[propName];\n var propType = typeof propValue === 'undefined' ? 'undefined' : _typeof(propValue);\n\n if (_react2.default.isValidElement(propValue)) {\n return new Error('Invalid ' + location + ' `' + propFullName + '` of type ReactElement ' + ('supplied to `' + componentName + '`, expected an element type (a string ') + 'or a ReactClass).');\n }\n\n if (propType !== 'function' && propType !== 'string') {\n return new Error('Invalid ' + location + ' `' + propFullName + '` of value `' + propValue + '` ' + ('supplied to `' + componentName + '`, expected an element type (a string ') + 'or a ReactClass).');\n }\n\n return null;\n}\n\nexports.default = (0, _createChainableTypeChecker2.default)(elementType);","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n\nvar DragDropContext_1 = require(\"./DragDropContext\");\n\nexports.DragDropContext = DragDropContext_1.DragDropContext;\nexports.DragDropContextProvider = DragDropContext_1.DragDropContextProvider;\nexports.DragDropContextConsumer = DragDropContext_1.Consumer;\n\nvar DragLayer_1 = require(\"./DragLayer\");\n\nexports.DragLayer = DragLayer_1.default;\n\nvar DragSource_1 = require(\"./DragSource\");\n\nexports.DragSource = DragSource_1.default;\n\nvar DropTarget_1 = require(\"./DropTarget\");\n\nexports.DropTarget = DropTarget_1.default;\n\nvar DragPreviewImage_1 = require(\"./DragPreviewImage\");\n\nexports.DragPreviewImage = DragPreviewImage_1.default;\n\nvar hooks_1 = require(\"./hooks\");\n\nexports.useDrag = hooks_1.useDrag;\nexports.useDragLayer = hooks_1.useDragLayer;\nexports.useDrop = hooks_1.useDrop;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n\nfunction isClassComponent(Component) {\n return Component && Component.prototype && typeof Component.prototype.render === 'function';\n}\n\nfunction isRefForwardingComponent(C) {\n return C && C.$$typeof && C.$$typeof.toString() === 'Symbol(react.forward_ref)';\n}\n\nexports.isRefForwardingComponent = isRefForwardingComponent;\n\nfunction isRefable(C) {\n return isClassComponent(C) || isRefForwardingComponent(C);\n}\n\nexports.isRefable = isRefable;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\n\nvar react_1 = require(\"react\");\n\nvar DragDropContext_1 = require(\"../../DragDropContext\");\n\nvar invariant = require('invariant');\n/**\n * A hook to retrieve the DragDropManager from Context\n */\n\n\nfunction useDragDropManager() {\n var dragDropManager = react_1.useContext(DragDropContext_1.context).dragDropManager;\n invariant(dragDropManager != null, 'Expected drag drop context');\n return dragDropManager;\n}\n\nexports.useDragDropManager = useDragDropManager;","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.FILE = '__NATIVE_FILE__';\nexports.URL = '__NATIVE_URL__';\nexports.TEXT = '__NATIVE_TEXT__';","export default function _extends() {\n _extends = Object.assign || function (target) {\n for (var i = 1; i < arguments.length; i++) {\n var source = arguments[i];\n\n for (var key in source) {\n if (Object.prototype.hasOwnProperty.call(source, key)) {\n target[key] = source[key];\n }\n }\n }\n\n return target;\n };\n\n return _extends.apply(this, arguments);\n}","export default function _objectWithoutPropertiesLoose(source, excluded) {\n if (source == null) return {};\n var target = {};\n var sourceKeys = Object.keys(source);\n var key, i;\n\n for (i = 0; i < sourceKeys.length; i++) {\n key = sourceKeys[i];\n if (excluded.indexOf(key) >= 0) continue;\n target[key] = source[key];\n }\n\n return target;\n}","export default !!(typeof window !== 'undefined' && window.document && window.document.createElement);","/* eslint-disable no-return-assign */\nimport canUseDOM from './canUseDOM';\nexport var optionsSupported = false;\nexport var onceSupported = false;\n\ntry {\n var options = {\n get passive() {\n return optionsSupported = true;\n },\n\n get once() {\n // eslint-disable-next-line no-multi-assign\n return onceSupported = optionsSupported = true;\n }\n\n };\n\n if (canUseDOM) {\n window.addEventListener('test', options, options);\n window.removeEventListener('test', options, true);\n }\n} catch (e) {}\n/* */\n\n/**\n * An `addEventListener` ponyfill, supports the `once` option\n */\n\n\nfunction addEventListener(node, eventName, handler, options) {\n if (options && typeof options !== 'boolean' && !onceSupported) {\n var once = options.once,\n capture = options.capture;\n var wrappedHandler = handler;\n\n if (!onceSupported && once) {\n wrappedHandler = handler.__once || function onceHandler(event) {\n this.removeEventListener(eventName, onceHandler, capture);\n handler.call(this, event);\n };\n\n handler.__once = wrappedHandler;\n }\n\n node.addEventListener(eventName, wrappedHandler, optionsSupported ? options : capture);\n }\n\n node.addEventListener(eventName, handler, options);\n}\n\nexport default addEventListener;","export default function ownerDocument(node) {\n return node && node.ownerDocument || document;\n}","function removeEventListener(node, eventName, handler, options) {\n var capture = options && typeof options !== 'boolean' ? options.capture : options;\n node.removeEventListener(eventName, handler, capture);\n\n if (handler.__once) {\n node.removeEventListener(eventName, handler.__once, capture);\n }\n}\n\nexport default removeEventListener;","import canUseDOM from './canUseDOM';\nvar size;\nexport default function scrollbarSize(recalc) {\n if (!size && size !== 0 || recalc) {\n if (canUseDOM) {\n var scrollDiv = document.createElement('div');\n scrollDiv.style.position = 'absolute';\n scrollDiv.style.top = '-9999px';\n scrollDiv.style.width = '50px';\n scrollDiv.style.height = '50px';\n scrollDiv.style.overflow = 'scroll';\n document.body.appendChild(scrollDiv);\n size = scrollDiv.offsetWidth - scrollDiv.clientWidth;\n document.body.removeChild(scrollDiv);\n }\n }\n\n return size;\n}","import ownerWindow from './ownerWindow';\nexport default function getComputedStyle(node, psuedoElement) {\n return ownerWindow(node).getComputedStyle(node, psuedoElement);\n}","import ownerDocument from './ownerDocument';\nexport default function ownerWindow(node) {\n var doc = ownerDocument(node);\n return doc && doc.defaultView || window;\n}","var rUpper = /([A-Z])/g;\nexport default function hyphenate(string) {\n return string.replace(rUpper, '-$1').toLowerCase();\n}","/**\n * Copyright 2013-2014, Facebook, Inc.\n * All rights reserved.\n * https://github.com/facebook/react/blob/2aeb8a2a6beb00617a4217f7f8284924fa2ad819/src/vendor/core/hyphenateStyleName.js\n */\nimport hyphenate from './hyphenate';\nvar msPattern = /^ms-/;\nexport default function hyphenateStyleName(string) {\n return hyphenate(string).replace(msPattern, '-ms-');\n}","var supportedTransforms = /^((translate|rotate|scale)(X|Y|Z|3d)?|matrix(3d)?|perspective|skew(X|Y)?)$/i;\nexport default function isTransform(value) {\n return !!(value && supportedTransforms.test(value));\n}","import getComputedStyle from './getComputedStyle';\nimport hyphenate from './hyphenateStyle';\nimport isTransform from './isTransform';\n\nfunction style(node, property) {\n var css = '';\n var transforms = '';\n\n if (typeof property === 'string') {\n return node.style.getPropertyValue(hyphenate(property)) || getComputedStyle(node).getPropertyValue(hyphenate(property));\n }\n\n Object.keys(property).forEach(function (key) {\n var value = property[key];\n\n if (!value && value !== 0) {\n node.style.removeProperty(hyphenate(key));\n } else if (isTransform(key)) {\n transforms += key + \"(\" + value + \") \";\n } else {\n css += hyphenate(key) + \": \" + value + \";\";\n }\n });\n\n if (transforms) {\n css += \"transform: \" + transforms + \";\";\n }\n\n node.style.cssText += \";\" + css;\n}\n\nexport default style;","import addEventListener from './addEventListener';\nimport removeEventListener from './removeEventListener';\n\nfunction listen(node, eventName, handler, options) {\n addEventListener(node, eventName, handler, options);\n return function () {\n removeEventListener(node, eventName, handler, options);\n };\n}\n\nexport default listen;","import css from './css';\nimport listen from './listen';\n\nfunction parseDuration(node) {\n var str = css(node, 'transitionDuration') || '';\n var mult = str.indexOf('ms') === -1 ? 1000 : 1;\n return parseFloat(str) * mult;\n}\n\nfunction triggerTransitionEnd(element) {\n var evt = document.createEvent('HTMLEvents');\n evt.initEvent('transitionend', true, true);\n element.dispatchEvent(evt);\n}\n\nfunction emulateTransitionEnd(element, duration, padding) {\n if (padding === void 0) {\n padding = 5;\n }\n\n var called = false;\n var handle = setTimeout(function () {\n if (!called) triggerTransitionEnd(element);\n }, duration + padding);\n var remove = listen(element, 'transitionend', function () {\n called = true;\n }, {\n once: true\n });\n return function () {\n clearTimeout(handle);\n remove();\n };\n}\n\nexport default function transitionEnd(element, handler, duration, padding) {\n if (duration == null) duration = parseDuration(element) || 0;\n var removeEmulate = emulateTransitionEnd(element, duration, padding);\n var remove = listen(element, 'transitionend', handler);\n return function () {\n removeEmulate();\n remove();\n };\n}","import ownerDocument from './ownerDocument';\n/**\n * Return the actively focused element safely.\n *\n * @param doc the document to checl\n */\n\nexport default function activeElement(doc) {\n if (doc === void 0) {\n doc = ownerDocument();\n } // Support: IE 9 only\n // IE9 throws an \"Unspecified error\" accessing document.activeElement from an