\n * \n * ```\n */\nvar VScroll = /** @class */ (function (_super) {\n __extends(VScroll, _super);\n /**\n * Initializes a new instance of the VScroll class.\n *\n * @param {VScrollModel} options - Specifies VScroll model properties as options.\n * @param {string | HTMLElement} element - Specifies the element for which vertical scrolling applies.\n */\n function VScroll(options, element) {\n return _super.call(this, options, element) || this;\n }\n /**\n * Initialize the event handler\n *\n * @private\n * @returns {void}\n */\n VScroll.prototype.preRender = function () {\n this.browser = Browser.info.name;\n this.browserCheck = this.browser === 'mozilla';\n this.isDevice = Browser.isDevice;\n this.customStep = true;\n var ele = this.element;\n this.ieCheck = this.browser === 'edge' || this.browser === 'msie';\n this.initialize();\n if (ele.id === '') {\n ele.id = getUniqueID('vscroll');\n this.uniqueId = true;\n }\n ele.style.display = 'block';\n if (this.enableRtl) {\n ele.classList.add(CLS_RTL);\n }\n };\n /**\n * To Initialize the vertical scroll rendering\n *\n * @private\n * @returns {void}\n */\n VScroll.prototype.render = function () {\n this.touchModule = new Touch(this.element, { scroll: this.touchHandler.bind(this), swipe: this.swipeHandler.bind(this) });\n EventHandler.add(this.scrollEle, 'scroll', this.scrollEventHandler, this);\n if (!this.isDevice) {\n this.createNavIcon(this.element);\n }\n else {\n this.element.classList.add(CLS_DEVICE);\n this.createOverlayElement(this.element);\n }\n this.setScrollState();\n EventHandler.add(this.element, 'wheel', this.wheelEventHandler, this);\n };\n VScroll.prototype.setScrollState = function () {\n if (isNullOrUndefined(this.scrollStep) || this.scrollStep < 0) {\n this.scrollStep = this.scrollEle.offsetHeight;\n this.customStep = false;\n }\n else {\n this.customStep = true;\n }\n };\n VScroll.prototype.initialize = function () {\n var scrollCnt = buildTag('div', { className: CLS_VSCROLLCON });\n var scrollBar = buildTag('div', { className: CLS_VSCROLLBAR });\n scrollBar.setAttribute('tabindex', '-1');\n var ele = this.element;\n var innerEle = [].slice.call(ele.children);\n for (var _i = 0, innerEle_1 = innerEle; _i < innerEle_1.length; _i++) {\n var ele_1 = innerEle_1[_i];\n scrollCnt.appendChild(ele_1);\n }\n scrollBar.appendChild(scrollCnt);\n ele.appendChild(scrollBar);\n scrollBar.style.overflowY = 'hidden';\n this.scrollEle = scrollBar;\n this.scrollItems = scrollCnt;\n };\n VScroll.prototype.getPersistData = function () {\n var keyEntity = ['scrollStep'];\n return this.addOnPersist(keyEntity);\n };\n /**\n * Returns the current module name.\n *\n * @returns {string} - It returns the current module name.\n * @private\n */\n VScroll.prototype.getModuleName = function () {\n return 'vScroll';\n };\n /**\n * Removes the control from the DOM and also removes all its related events.\n *\n * @returns {void}\n */\n VScroll.prototype.destroy = function () {\n var el = this.element;\n el.style.display = '';\n removeClass([this.element], [CLS_ROOT, CLS_DEVICE]);\n var navs = selectAll('.e-' + el.id + '_nav.' + CLS_VSCROLLNAV, el);\n var overlays = selectAll('.' + CLS_OVERLAY, el);\n [].slice.call(overlays).forEach(function (ele) {\n detach(ele);\n });\n for (var _i = 0, _a = [].slice.call(this.scrollItems.children); _i < _a.length; _i++) {\n var elem = _a[_i];\n el.appendChild(elem);\n }\n if (this.uniqueId) {\n this.element.removeAttribute('id');\n }\n detach(this.scrollEle);\n if (navs.length > 0) {\n detach(navs[0]);\n if (!isNullOrUndefined(navs[1])) {\n detach(navs[1]);\n }\n }\n EventHandler.remove(this.scrollEle, 'scroll', this.scrollEventHandler);\n this.touchModule.destroy();\n this.touchModule = null;\n _super.prototype.destroy.call(this);\n };\n /**\n * Specifies the value to disable/enable the VScroll component.\n * When set to `true` , the component will be disabled.\n *\n * @param {boolean} value - Based on this Boolean value, VScroll will be enabled (false) or disabled (true).\n * @returns {void}.\n */\n VScroll.prototype.disable = function (value) {\n var navEle = selectAll('.e-scroll-nav:not(.' + CLS_DISABLE + ')', this.element);\n if (value) {\n this.element.classList.add(CLS_DISABLE);\n }\n else {\n this.element.classList.remove(CLS_DISABLE);\n }\n [].slice.call(navEle).forEach(function (el) {\n el.setAttribute('tabindex', !value ? '0' : '-1');\n });\n };\n VScroll.prototype.createOverlayElement = function (element) {\n var id = element.id.concat('_nav');\n var downOverlayEle = buildTag('div', { className: CLS_OVERLAY + ' ' + CLS_DOWNOVERLAY });\n var clsDown = 'e-' + element.id.concat('_nav ' + CLS_VSCROLLNAV + ' ' + CLS_VSCROLLNAVDOWN);\n var downEle = buildTag('div', { id: id.concat('down'), className: clsDown });\n var navItem = buildTag('div', { className: CLS_NAVDOWNARROW + ' ' + CLS_NAVARROW + ' e-icons' });\n downEle.appendChild(navItem);\n var upEle = buildTag('div', { className: CLS_OVERLAY + ' ' + CLS_UPOVERLAY });\n if (this.ieCheck) {\n downEle.classList.add('e-ie-align');\n }\n element.appendChild(downOverlayEle);\n element.appendChild(downEle);\n element.insertBefore(upEle, element.firstChild);\n this.eventBinding([downEle]);\n };\n VScroll.prototype.createNavIcon = function (element) {\n var id = element.id.concat('_nav');\n var clsDown = 'e-' + element.id.concat('_nav ' + CLS_VSCROLLNAV + ' ' + CLS_VSCROLLNAVDOWN);\n var nav = buildTag('div', { id: id.concat('_down'), className: clsDown });\n nav.setAttribute('aria-disabled', 'false');\n var navItem = buildTag('div', { className: CLS_NAVDOWNARROW + ' ' + CLS_NAVARROW + ' e-icons' });\n var clsUp = 'e-' + element.id.concat('_nav ' + CLS_VSCROLLNAV + ' ' + CLS_VSCROLLNAVUP);\n var navElement = buildTag('div', { id: id.concat('_up'), className: clsUp + ' ' + CLS_DISABLE });\n navElement.setAttribute('aria-disabled', 'true');\n var navUpItem = buildTag('div', { className: CLS_NAVUPARROW + ' ' + CLS_NAVARROW + ' e-icons' });\n navElement.appendChild(navUpItem);\n nav.appendChild(navItem);\n nav.setAttribute('tabindex', '0');\n element.appendChild(nav);\n element.insertBefore(navElement, element.firstChild);\n if (this.ieCheck) {\n nav.classList.add('e-ie-align');\n navElement.classList.add('e-ie-align');\n }\n this.eventBinding([nav, navElement]);\n };\n VScroll.prototype.onKeyPress = function (ev) {\n var _this = this;\n if (ev.key === 'Enter') {\n var timeoutFun_1 = function () {\n _this.keyTimeout = true;\n _this.eleScrolling(10, ev.target, true);\n };\n this.keyTimer = window.setTimeout(function () {\n timeoutFun_1();\n }, 100);\n }\n };\n VScroll.prototype.onKeyUp = function (ev) {\n if (ev.key !== 'Enter') {\n return;\n }\n if (this.keyTimeout) {\n this.keyTimeout = false;\n }\n else {\n ev.target.click();\n }\n clearTimeout(this.keyTimer);\n };\n VScroll.prototype.eventBinding = function (element) {\n var _this = this;\n [].slice.call(element).forEach(function (ele) {\n new Touch(ele, { tapHold: _this.tabHoldHandler.bind(_this), tapHoldThreshold: 500 });\n ele.addEventListener('keydown', _this.onKeyPress.bind(_this));\n ele.addEventListener('keyup', _this.onKeyUp.bind(_this));\n ele.addEventListener('mouseup', _this.repeatScroll.bind(_this));\n ele.addEventListener('touchend', _this.repeatScroll.bind(_this));\n ele.addEventListener('contextmenu', function (e) {\n e.preventDefault();\n });\n EventHandler.add(ele, 'click', _this.clickEventHandler, _this);\n });\n };\n VScroll.prototype.repeatScroll = function () {\n clearInterval(this.timeout);\n };\n VScroll.prototype.tabHoldHandler = function (ev) {\n var _this = this;\n var trgt = ev.originalEvent.target;\n trgt = this.contains(trgt, CLS_VSCROLLNAV) ? trgt.firstElementChild : trgt;\n var scrollDistance = 10;\n var timeoutFun = function () {\n _this.eleScrolling(scrollDistance, trgt, true);\n };\n this.timeout = window.setInterval(function () {\n timeoutFun();\n }, 50);\n };\n VScroll.prototype.contains = function (element, className) {\n return element.classList.contains(className);\n };\n VScroll.prototype.eleScrolling = function (scrollDis, trgt, isContinuous) {\n var classList = trgt.classList;\n if (classList.contains(CLS_VSCROLLNAV)) {\n classList = trgt.querySelector('.' + CLS_NAVARROW).classList;\n }\n if (classList.contains(CLS_NAVDOWNARROW)) {\n this.frameScrollRequest(scrollDis, 'add', isContinuous);\n }\n else if (classList.contains(CLS_NAVUPARROW)) {\n this.frameScrollRequest(scrollDis, '', isContinuous);\n }\n };\n VScroll.prototype.clickEventHandler = function (event) {\n this.eleScrolling(this.scrollStep, event.target, false);\n };\n VScroll.prototype.wheelEventHandler = function (e) {\n e.preventDefault();\n this.frameScrollRequest(this.scrollStep, (e.deltaY > 0 ? 'add' : ''), false);\n };\n VScroll.prototype.swipeHandler = function (e) {\n var swipeElement = this.scrollEle;\n var distance;\n if (e.velocity <= 1) {\n distance = e.distanceY / (e.velocity * 10);\n }\n else {\n distance = e.distanceY / e.velocity;\n }\n var start = 0.5;\n var animate = function () {\n var step = Math.sin(start);\n if (step <= 0) {\n window.cancelAnimationFrame(step);\n }\n else {\n if (e.swipeDirection === 'Up') {\n swipeElement.scrollTop += distance * step;\n }\n else if (e.swipeDirection === 'Down') {\n swipeElement.scrollTop -= distance * step;\n }\n start -= 0.02;\n window.requestAnimationFrame(animate);\n }\n };\n animate();\n };\n VScroll.prototype.scrollUpdating = function (scrollVal, action) {\n if (action === 'add') {\n this.scrollEle.scrollTop += scrollVal;\n }\n else {\n this.scrollEle.scrollTop -= scrollVal;\n }\n };\n VScroll.prototype.frameScrollRequest = function (scrollValue, action, isContinuous) {\n var _this = this;\n var step = 10;\n if (isContinuous) {\n this.scrollUpdating(scrollValue, action);\n return;\n }\n if (!this.customStep) {\n [].slice.call(selectAll('.' + CLS_OVERLAY, this.element)).forEach(function (el) {\n scrollValue -= el.offsetHeight;\n });\n }\n var animate = function () {\n if (scrollValue < step) {\n window.cancelAnimationFrame(step);\n }\n else {\n _this.scrollUpdating(step, action);\n scrollValue -= step;\n window.requestAnimationFrame(animate);\n }\n };\n animate();\n };\n VScroll.prototype.touchHandler = function (e) {\n var el = this.scrollEle;\n var distance = e.distanceY;\n if (e.scrollDirection === 'Up') {\n el.scrollTop = el.scrollTop + distance;\n }\n else if (e.scrollDirection === 'Down') {\n el.scrollTop = el.scrollTop - distance;\n }\n };\n VScroll.prototype.arrowDisabling = function (addDisableCls, removeDisableCls) {\n if (this.isDevice) {\n var arrowEle = isNullOrUndefined(addDisableCls) ? removeDisableCls : addDisableCls;\n var arrowIcon = arrowEle.querySelector('.' + CLS_NAVARROW);\n if (isNullOrUndefined(addDisableCls)) {\n classList(arrowIcon, [CLS_NAVDOWNARROW], [CLS_NAVUPARROW]);\n }\n else {\n classList(arrowIcon, [CLS_NAVUPARROW], [CLS_NAVDOWNARROW]);\n }\n }\n else {\n addDisableCls.classList.add(CLS_DISABLE);\n addDisableCls.setAttribute('aria-disabled', 'true');\n addDisableCls.removeAttribute('tabindex');\n removeDisableCls.classList.remove(CLS_DISABLE);\n removeDisableCls.setAttribute('aria-disabled', 'false');\n removeDisableCls.setAttribute('tabindex', '0');\n }\n this.repeatScroll();\n };\n VScroll.prototype.scrollEventHandler = function (e) {\n var target = e.target;\n var height = target.offsetHeight;\n var navUpEle = this.element.querySelector('.' + CLS_VSCROLLNAVUP);\n var navDownEle = this.element.querySelector('.' + CLS_VSCROLLNAVDOWN);\n var upOverlay = this.element.querySelector('.' + CLS_UPOVERLAY);\n var downOverlay = this.element.querySelector('.' + CLS_DOWNOVERLAY);\n var scrollTop = target.scrollTop;\n if (scrollTop <= 0) {\n scrollTop = -scrollTop;\n }\n if (this.isDevice) {\n if (scrollTop < OVERLAY_MAXWID) {\n upOverlay.style.height = scrollTop + 'px';\n }\n else {\n upOverlay.style.height = '40px';\n }\n if ((target.scrollHeight - Math.ceil(height + scrollTop)) < OVERLAY_MAXWID) {\n downOverlay.style.height = (target.scrollHeight - Math.ceil(height + scrollTop)) + 'px';\n }\n else {\n downOverlay.style.height = '40px';\n }\n }\n if (scrollTop === 0) {\n this.arrowDisabling(navUpEle, navDownEle);\n }\n else if (Math.ceil(height + scrollTop + .1) >= target.scrollHeight) {\n this.arrowDisabling(navDownEle, navUpEle);\n }\n else {\n var disEle = this.element.querySelector('.' + CLS_VSCROLLNAV + '.' + CLS_DISABLE);\n if (disEle) {\n disEle.classList.remove(CLS_DISABLE);\n disEle.setAttribute('aria-disabled', 'false');\n disEle.setAttribute('tabindex', '0');\n }\n }\n };\n /**\n * Gets called when the model property changes.The data that describes the old and new values of property that changed.\n *\n * @param {VScrollModel} newProp - It contains the new value of data.\n * @param {VScrollModel} oldProp - It contains the old value of data.\n * @returns {void}\n * @private\n */\n VScroll.prototype.onPropertyChanged = function (newProp, oldProp) {\n for (var _i = 0, _a = Object.keys(newProp); _i < _a.length; _i++) {\n var prop = _a[_i];\n switch (prop) {\n case 'scrollStep':\n this.setScrollState();\n break;\n case 'enableRtl':\n if (newProp.enableRtl) {\n this.element.classList.add(CLS_RTL);\n }\n else {\n this.element.classList.remove(CLS_RTL);\n }\n break;\n }\n }\n };\n __decorate([\n Property(null)\n ], VScroll.prototype, \"scrollStep\", void 0);\n VScroll = __decorate([\n NotifyPropertyChanges\n ], VScroll);\n return VScroll;\n}(Component));\nexport { VScroll };\n","import { detach, getUniqueID, rippleEffect, setValue, attributes } from '@syncfusion/ej2-base';\nimport { getValue, addClass, deleteObject } from '@syncfusion/ej2-base';\n/**\n * Initialize wrapper element for angular.\n *\n * @private\n *\n * @param {CreateElementArgs} createElement - Specifies created element args\n * @param {string} tag - Specifies tag name\n * @param {string} type - Specifies type name\n * @param {HTMLInputElement} element - Specifies input element\n * @param {string} WRAPPER - Specifies wrapper element\n * @param {string} role - Specifies role\n * @returns {HTMLInputElement} - Input Element\n */\nexport function wrapperInitialize(createElement, tag, type, element, WRAPPER, role) {\n var input = element;\n if (element.tagName === tag) {\n var ejInstance = getValue('ej2_instances', element);\n input = createElement('input', { attrs: { 'type': type } });\n var props = ['change', 'cssClass', 'label', 'labelPosition', 'id'];\n for (var index = 0, len = element.attributes.length; index < len; index++) {\n if (props.indexOf(element.attributes[index].nodeName) === -1) {\n input.setAttribute(element.attributes[index].nodeName, element.attributes[index].nodeValue);\n }\n }\n attributes(element, { 'class': WRAPPER, 'role': role, 'aria-checked': 'false' });\n element.appendChild(input);\n setValue('ej2_instances', ejInstance, input);\n deleteObject(element, 'ej2_instances');\n }\n return input;\n}\n/**\n * Get the text node.\n *\n * @param {HTMLElement} element - Specifies html element\n * @private\n * @returns {Node} - Text node.\n */\nexport function getTextNode(element) {\n var node;\n var childnode = element.childNodes;\n for (var i = 0; i < childnode.length; i++) {\n node = childnode[i];\n if (node.nodeType === 3) {\n return node;\n }\n }\n return null;\n}\n/**\n * Destroy the button components.\n *\n * @private\n * @param {Switch | CheckBox} ejInst - Specifies eJ2 Instance\n * @param {Element} wrapper - Specifies wrapper element\n * @param {string} tagName - Specifies tag name\n * @returns {void}\n */\nexport function destroy(ejInst, wrapper, tagName) {\n if (tagName === 'INPUT') {\n wrapper.parentNode.insertBefore(ejInst.element, wrapper);\n detach(wrapper);\n ejInst.element.checked = false;\n ['name', 'value', 'disabled'].forEach(function (key) {\n ejInst.element.removeAttribute(key);\n });\n }\n else {\n ['role', 'aria-checked', 'class'].forEach(function (key) {\n wrapper.removeAttribute(key);\n });\n wrapper.innerHTML = '';\n }\n}\n/**\n * Initialize control pre rendering.\n *\n * @private\n * @param {Switch | CheckBox} proxy - Specifies proxy\n * @param {string} control - Specifies control\n * @param {string} wrapper - Specifies wrapper element\n * @param {HTMLInputElement} element - Specifies input element\n * @param {string} moduleName - Specifies module name\n * @returns {void}\n */\nexport function preRender(proxy, control, wrapper, element, moduleName) {\n element = wrapperInitialize(proxy.createElement, control, 'checkbox', element, wrapper, moduleName);\n proxy.element = element;\n if (proxy.element.getAttribute('type') !== 'checkbox') {\n proxy.element.setAttribute('type', 'checkbox');\n }\n if (!proxy.element.id) {\n proxy.element.id = getUniqueID('e-' + moduleName);\n }\n}\n/**\n * Creates CheckBox component UI with theming and ripple support.\n *\n * @private\n * @param {CreateElementArgs} createElement - Specifies Created Element args\n * @param {boolean} enableRipple - Specifies ripple effect\n * @param {CheckBoxUtilModel} options - Specifies Checkbox util Model\n * @returns {Element} - Checkbox Element\n */\nexport function createCheckBox(createElement, enableRipple, options) {\n if (enableRipple === void 0) { enableRipple = false; }\n if (options === void 0) { options = {}; }\n var wrapper = createElement('div', { className: 'e-checkbox-wrapper e-css' });\n if (options.cssClass) {\n addClass([wrapper], options.cssClass.split(' '));\n }\n if (options.enableRtl) {\n wrapper.classList.add('e-rtl');\n }\n if (enableRipple) {\n var rippleSpan = createElement('span', { className: 'e-ripple-container' });\n rippleEffect(rippleSpan, { isCenterRipple: true, duration: 400 });\n wrapper.appendChild(rippleSpan);\n }\n var frameSpan = createElement('span', { className: 'e-frame e-icons' });\n if (options.checked) {\n frameSpan.classList.add('e-check');\n }\n wrapper.appendChild(frameSpan);\n if (options.label) {\n var labelSpan = createElement('span', { className: 'e-label' });\n if (options.disableHtmlEncode) {\n labelSpan.textContent = options.label;\n }\n else {\n labelSpan.innerHTML = options.label;\n }\n wrapper.appendChild(labelSpan);\n }\n return wrapper;\n}\n/**\n * Handles ripple mouse.\n *\n * @private\n * @param {MouseEvent} e - Specifies mouse event\n * @param {Element} rippleSpan - Specifies Ripple span element\n * @returns {void}\n */\nexport function rippleMouseHandler(e, rippleSpan) {\n if (rippleSpan) {\n var event_1 = document.createEvent('MouseEvents');\n event_1.initEvent(e.type, false, true);\n rippleSpan.dispatchEvent(event_1);\n }\n}\n/**\n * Append hidden input to given element\n *\n * @private\n * @param {Switch | CheckBox} proxy - Specifies Proxy\n * @param {Element} wrap - Specifies Wrapper ELement\n * @returns {void}\n */\nexport function setHiddenInput(proxy, wrap) {\n if (proxy.element.getAttribute('ejs-for')) {\n wrap.appendChild(proxy.createElement('input', {\n attrs: { 'name': proxy.name || proxy.element.name, 'value': 'false', 'type': 'hidden' }\n }));\n }\n}\n","/**\n * Collision module.\n */\nimport { calculatePosition } from './position';\nimport { isNullOrUndefined } from '@syncfusion/ej2-base';\nvar parentDocument;\nvar targetContainer;\n/**\n *\n * @param {HTMLElement} element - specifies the element\n * @param {HTMLElement} viewPortElement - specifies the element\n * @param {CollisionCoordinates} axis - specifies the collision coordinates\n * @param {OffsetPosition} position - specifies the position\n * @returns {void}\n */\nexport function fit(element, viewPortElement, axis, position) {\n if (viewPortElement === void 0) { viewPortElement = null; }\n if (axis === void 0) { axis = { X: false, Y: false }; }\n if (!axis.Y && !axis.X) {\n return { left: 0, top: 0 };\n }\n var elemData = element.getBoundingClientRect();\n targetContainer = viewPortElement;\n parentDocument = element.ownerDocument;\n if (!position) {\n position = calculatePosition(element, 'left', 'top');\n }\n if (axis.X) {\n var containerWidth = targetContainer ? getTargetContainerWidth() : getViewPortWidth();\n var containerLeft = ContainerLeft();\n var containerRight = ContainerRight();\n var overLeft = containerLeft - position.left;\n var overRight = position.left + elemData.width - containerRight;\n if (elemData.width > containerWidth) {\n if (overLeft > 0 && overRight <= 0) {\n position.left = containerRight - elemData.width;\n }\n else if (overRight > 0 && overLeft <= 0) {\n position.left = containerLeft;\n }\n else {\n position.left = overLeft > overRight ? (containerRight - elemData.width) : containerLeft;\n }\n }\n else if (overLeft > 0) {\n position.left += overLeft;\n }\n else if (overRight > 0) {\n position.left -= overRight;\n }\n }\n if (axis.Y) {\n var containerHeight = targetContainer ? getTargetContainerHeight() : getViewPortHeight();\n var containerTop = ContainerTop();\n var containerBottom = ContainerBottom();\n var overTop = containerTop - position.top;\n var overBottom = position.top + elemData.height - containerBottom;\n if (elemData.height > containerHeight) {\n if (overTop > 0 && overBottom <= 0) {\n position.top = containerBottom - elemData.height;\n }\n else if (overBottom > 0 && overTop <= 0) {\n position.top = containerTop;\n }\n else {\n position.top = overTop > overBottom ? (containerBottom - elemData.height) : containerTop;\n }\n }\n else if (overTop > 0) {\n position.top += overTop;\n }\n else if (overBottom > 0) {\n position.top -= overBottom;\n }\n }\n return position;\n}\n/**\n *\n * @param {HTMLElement} element - specifies the html element\n * @param {HTMLElement} viewPortElement - specifies the html element\n * @param {number} x - specifies the number\n * @param {number} y - specifies the number\n * @returns {string[]} - returns the string value\n */\nexport function isCollide(element, viewPortElement, x, y) {\n if (viewPortElement === void 0) { viewPortElement = null; }\n var elemOffset = calculatePosition(element, 'left', 'top');\n if (x) {\n elemOffset.left = x;\n }\n if (y) {\n elemOffset.top = y;\n }\n var data = [];\n targetContainer = viewPortElement;\n parentDocument = element.ownerDocument;\n var elementRect = element.getBoundingClientRect();\n var top = elemOffset.top;\n var left = elemOffset.left;\n var right = elemOffset.left + elementRect.width;\n var bottom = elemOffset.top + elementRect.height;\n // eslint-disable-next-line\n var topData = '', leftData = '';\n var yAxis = topCollideCheck(top, bottom);\n var xAxis = leftCollideCheck(left, right);\n if (yAxis.topSide) {\n data.push('top');\n }\n if (xAxis.rightSide) {\n data.push('right');\n }\n if (xAxis.leftSide) {\n data.push('left');\n }\n if (yAxis.bottomSide) {\n data.push('bottom');\n }\n return data;\n}\n/**\n *\n * @param {HTMLElement} element - specifies the element\n * @param {HTMLElement} target - specifies the element\n * @param {number} offsetX - specifies the number\n * @param {number} offsetY - specifies the number\n * @param {string} positionX - specifies the string value\n * @param {string} positionY - specifies the string value\n * @param {HTMLElement} viewPortElement - specifies the element\n * @param {CollisionCoordinates} axis - specifies the collision axis\n * @param {boolean} fixedParent - specifies the boolean\n * @returns {void}\n */\nexport function flip(element, target, offsetX, offsetY, positionX, positionY, viewPortElement, \n/* eslint-disable */\naxis, fixedParent) {\n if (viewPortElement === void 0) { viewPortElement = null; }\n if (axis === void 0) { axis = { X: true, Y: true }; }\n if (!target || !element || !positionX || !positionY || (!axis.X && !axis.Y)) {\n return;\n }\n // eslint-disable-next-line\n var tEdge = { TL: null,\n TR: null,\n BL: null,\n BR: null\n }, eEdge = {\n TL: null,\n TR: null,\n BL: null,\n BR: null\n /* eslint-enable */\n };\n var elementRect;\n if (window.getComputedStyle(element).display === 'none') {\n var oldVisibility = element.style.visibility;\n element.style.visibility = 'hidden';\n element.style.display = 'block';\n elementRect = element.getBoundingClientRect();\n element.style.removeProperty('display');\n element.style.visibility = oldVisibility;\n }\n else {\n elementRect = element.getBoundingClientRect();\n }\n var pos = {\n posX: positionX, posY: positionY, offsetX: offsetX, offsetY: offsetY, position: { left: 0, top: 0 }\n };\n targetContainer = viewPortElement;\n parentDocument = target.ownerDocument;\n updateElementData(target, tEdge, pos, fixedParent, elementRect);\n setPosition(eEdge, pos, elementRect);\n if (axis.X) {\n leftFlip(target, eEdge, tEdge, pos, elementRect, true);\n }\n if (axis.Y && tEdge.TL.top > -1) {\n topFlip(target, eEdge, tEdge, pos, elementRect, true);\n }\n setPopup(element, pos, elementRect);\n}\n/**\n *\n * @param {HTMLElement} element - specifies the element\n * @param {PositionLocation} pos - specifies the location\n * @param {ClientRect} elementRect - specifies the client rect\n * @returns {void}\n */\nfunction setPopup(element, pos, elementRect) {\n //eslint-disable-next-line\n var left = 0, top = 0;\n if (element.offsetParent != null\n && (getComputedStyle(element.offsetParent).position === 'absolute' ||\n getComputedStyle(element.offsetParent).position === 'relative')) {\n var data = calculatePosition(element.offsetParent, 'left', 'top', false, elementRect);\n left = data.left;\n top = data.top;\n }\n element.style.top = (pos.position.top + pos.offsetY - (top)) + 'px';\n element.style.left = (pos.position.left + pos.offsetX - (left)) + 'px';\n}\n/**\n *\n * @param {HTMLElement} target - specifies the element\n * @param {EdgeOffset} edge - specifies the offset\n * @param {PositionLocation} pos - specifies theloaction\n * @param {boolean} fixedParent - specifies the boolean\n * @param {ClientRect} elementRect - specifies the client rect\n * @returns {void}\n */\nfunction updateElementData(target, edge, pos, fixedParent, elementRect) {\n pos.position = calculatePosition(target, pos.posX, pos.posY, fixedParent, elementRect);\n edge.TL = calculatePosition(target, 'left', 'top', fixedParent, elementRect);\n edge.TR = calculatePosition(target, 'right', 'top', fixedParent, elementRect);\n edge.BR = calculatePosition(target, 'left', 'bottom', fixedParent, elementRect);\n edge.BL = calculatePosition(target, 'right', 'bottom', fixedParent, elementRect);\n}\n/**\n *\n * @param {EdgeOffset} eStatus - specifies the status\n * @param {PositionLocation} pos - specifies the location\n * @param {ClientRect} elementRect - specifies the client\n * @returns {void}\n */\nfunction setPosition(eStatus, pos, elementRect) {\n eStatus.TL = { top: pos.position.top + pos.offsetY, left: pos.position.left + pos.offsetX };\n eStatus.TR = { top: eStatus.TL.top, left: eStatus.TL.left + elementRect.width };\n eStatus.BL = { top: eStatus.TL.top + elementRect.height,\n left: eStatus.TL.left };\n eStatus.BR = { top: eStatus.TL.top + elementRect.height,\n left: eStatus.TL.left + elementRect.width };\n}\n/**\n *\n * @param {number} left - specifies the number\n * @param {number} right - specifies the number\n * @returns {LeftCorners} - returns the value\n */\nfunction leftCollideCheck(left, right) {\n //eslint-disable-next-line\n var leftSide = false, rightSide = false;\n if (((left - getBodyScrollLeft()) < ContainerLeft())) {\n leftSide = true;\n }\n if (right > ContainerRight()) {\n rightSide = true;\n }\n return { leftSide: leftSide, rightSide: rightSide };\n}\n/**\n *\n * @param {HTMLElement} target - specifies the element\n * @param {EdgeOffset} edge - specifes the element\n * @param {EdgeOffset} tEdge - specifies the edge offset\n * @param {PositionLocation} pos - specifes the location\n * @param {ClientRect} elementRect - specifies the client\n * @param {boolean} deepCheck - specifies the boolean value\n * @returns {void}\n */\nfunction leftFlip(target, edge, tEdge, pos, elementRect, deepCheck) {\n var collideSide = leftCollideCheck(edge.TL.left, edge.TR.left);\n if ((tEdge.TL.left - getBodyScrollLeft()) <= ContainerLeft()) {\n collideSide.leftSide = false;\n }\n if (tEdge.TR.left > ContainerRight()) {\n collideSide.rightSide = false;\n }\n if ((collideSide.leftSide && !collideSide.rightSide) || (!collideSide.leftSide && collideSide.rightSide)) {\n if (pos.posX === 'right') {\n pos.posX = 'left';\n }\n else {\n pos.posX = 'right';\n }\n pos.offsetX = pos.offsetX + elementRect.width;\n pos.offsetX = -1 * pos.offsetX;\n pos.position = calculatePosition(target, pos.posX, pos.posY, false);\n setPosition(edge, pos, elementRect);\n if (deepCheck) {\n leftFlip(target, edge, tEdge, pos, elementRect, false);\n }\n }\n}\n/**\n *\n * @param {HTMLElement} target - specifies the element\n * @param {EdgeOffset} edge - specifies the offset\n * @param {EdgeOffset} tEdge - specifies the offset\n * @param {PositionLocation} pos - specifies the location\n * @param {ClientRect} elementRect - specifies the client rect\n * @param {boolean} deepCheck - specifies the boolean\n * @returns {void}\n */\nfunction topFlip(target, edge, tEdge, pos, elementRect, deepCheck) {\n var collideSide = topCollideCheck(edge.TL.top, edge.BL.top);\n if ((tEdge.TL.top - getBodyScrollTop()) <= ContainerTop()) {\n collideSide.topSide = false;\n }\n if (tEdge.BL.top >= ContainerBottom() && target.getBoundingClientRect().bottom < window.innerHeight) {\n collideSide.bottomSide = false;\n }\n if ((collideSide.topSide && !collideSide.bottomSide) || (!collideSide.topSide && collideSide.bottomSide)) {\n if (pos.posY === 'top') {\n pos.posY = 'bottom';\n }\n else {\n pos.posY = 'top';\n }\n pos.offsetY = pos.offsetY + elementRect.height;\n pos.offsetY = -1 * pos.offsetY;\n pos.position = calculatePosition(target, pos.posX, pos.posY, false, elementRect);\n setPosition(edge, pos, elementRect);\n if (deepCheck) {\n topFlip(target, edge, tEdge, pos, elementRect, false);\n }\n }\n}\n/**\n *\n * @param {number} top - specifies the number\n * @param {number} bottom - specifies the number\n * @returns {TopCorners} - retyrns the value\n */\nfunction topCollideCheck(top, bottom) {\n //eslint-disable-next-line\n var topSide = false, bottomSide = false;\n if ((top - getBodyScrollTop()) < ContainerTop()) {\n topSide = true;\n }\n if (bottom > ContainerBottom()) {\n bottomSide = true;\n }\n return { topSide: topSide, bottomSide: bottomSide };\n}\n/**\n * @returns {void}\n */\nfunction getTargetContainerWidth() {\n return targetContainer.getBoundingClientRect().width;\n}\n/**\n * @returns {void}\n */\nfunction getTargetContainerHeight() {\n return targetContainer.getBoundingClientRect().height;\n}\n/**\n * @returns {void}\n */\nfunction getTargetContainerLeft() {\n return targetContainer.getBoundingClientRect().left;\n}\n/**\n * @returns {void}\n */\nfunction getTargetContainerTop() {\n return targetContainer.getBoundingClientRect().top;\n}\n//eslint-disable-next-line\nfunction ContainerTop() {\n if (targetContainer) {\n return getTargetContainerTop();\n }\n return 0;\n}\n//eslint-disable-next-line\nfunction ContainerLeft() {\n if (targetContainer) {\n return getTargetContainerLeft();\n }\n return 0;\n}\n//eslint-disable-next-line\nfunction ContainerRight() {\n if (targetContainer) {\n return (getBodyScrollLeft() + getTargetContainerLeft() + getTargetContainerWidth());\n }\n return (getBodyScrollLeft() + getViewPortWidth());\n}\n//eslint-disable-next-line\nfunction ContainerBottom() {\n if (targetContainer) {\n return (getBodyScrollTop() + getTargetContainerTop() + getTargetContainerHeight());\n }\n return (getBodyScrollTop() + getViewPortHeight());\n}\n/**\n * @returns {void}\n */\nfunction getBodyScrollTop() {\n // if(targetContainer)\n // return targetContainer.scrollTop;\n return parentDocument.documentElement.scrollTop || parentDocument.body.scrollTop;\n}\n/**\n * @returns {void}\n */\nfunction getBodyScrollLeft() {\n // if(targetContainer)\n // return targetContainer.scrollLeft;\n return parentDocument.documentElement.scrollLeft || parentDocument.body.scrollLeft;\n}\n/**\n * @returns {void}\n */\nfunction getViewPortHeight() {\n return window.innerHeight;\n}\n/**\n * @returns {void}\n */\nfunction getViewPortWidth() {\n var windowWidth = window.innerWidth;\n var documentReact = document.documentElement.getBoundingClientRect();\n var offsetWidth = (isNullOrUndefined(document.documentElement)) ? 0 : documentReact.width;\n return windowWidth - (windowWidth - offsetWidth);\n}\n","var isMergeableObject = function isMergeableObject(value) {\n\treturn isNonNullObject(value)\n\t\t&& !isSpecial(value)\n};\n\nfunction isNonNullObject(value) {\n\treturn !!value && typeof value === 'object'\n}\n\nfunction isSpecial(value) {\n\tvar stringValue = Object.prototype.toString.call(value);\n\n\treturn stringValue === '[object RegExp]'\n\t\t|| stringValue === '[object Date]'\n\t\t|| isReactElement(value)\n}\n\n// see https://github.com/facebook/react/blob/b5ac963fb791d1298e7f396236383bc955f916c1/src/isomorphic/classic/element/ReactElement.js#L21-L25\nvar canUseSymbol = typeof Symbol === 'function' && Symbol.for;\nvar REACT_ELEMENT_TYPE = canUseSymbol ? Symbol.for('react.element') : 0xeac7;\n\nfunction isReactElement(value) {\n\treturn value.$$typeof === REACT_ELEMENT_TYPE\n}\n\nfunction emptyTarget(val) {\n\treturn Array.isArray(val) ? [] : {}\n}\n\nfunction cloneUnlessOtherwiseSpecified(value, options) {\n\treturn (options.clone !== false && options.isMergeableObject(value))\n\t\t? deepmerge(emptyTarget(value), value, options)\n\t\t: value\n}\n\nfunction defaultArrayMerge(target, source, options) {\n\treturn target.concat(source).map(function(element) {\n\t\treturn cloneUnlessOtherwiseSpecified(element, options)\n\t})\n}\n\nfunction mergeObject(target, source, options) {\n\tvar destination = {};\n\tif (options.isMergeableObject(target)) {\n\t\tObject.keys(target).forEach(function(key) {\n\t\t\tdestination[key] = cloneUnlessOtherwiseSpecified(target[key], options);\n\t\t});\n\t}\n\tObject.keys(source).forEach(function(key) {\n\t\tif (!options.isMergeableObject(source[key]) || !target[key]) {\n\t\t\tdestination[key] = cloneUnlessOtherwiseSpecified(source[key], options);\n\t\t} else {\n\t\t\tdestination[key] = deepmerge(target[key], source[key], options);\n\t\t}\n\t});\n\treturn destination\n}\n\nfunction deepmerge(target, source, options) {\n\toptions = options || {};\n\toptions.arrayMerge = options.arrayMerge || defaultArrayMerge;\n\toptions.isMergeableObject = options.isMergeableObject || isMergeableObject;\n\n\tvar sourceIsArray = Array.isArray(source);\n\tvar targetIsArray = Array.isArray(target);\n\tvar sourceAndTargetTypesMatch = sourceIsArray === targetIsArray;\n\n\tif (!sourceAndTargetTypesMatch) {\n\t\treturn cloneUnlessOtherwiseSpecified(source, options)\n\t} else if (sourceIsArray) {\n\t\treturn options.arrayMerge(target, source, options)\n\t} else {\n\t\treturn mergeObject(target, source, options)\n\t}\n}\n\ndeepmerge.all = function deepmergeAll(array, options) {\n\tif (!Array.isArray(array)) {\n\t\tthrow new Error('first argument should be an array')\n\t}\n\n\treturn array.reduce(function(prev, next) {\n\t\treturn deepmerge(prev, next, options)\n\t}, {})\n};\n\nvar deepmerge_1 = deepmerge;\n\nexport default deepmerge_1;\n","import root from './_root.js';\n\n/** Built-in value references. */\nvar Symbol = root.Symbol;\n\nexport default Symbol;\n","import Symbol from './_Symbol.js';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\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 */\nvar nativeObjectToString = objectProto.toString;\n\n/** Built-in value references. */\nvar symToStringTag = Symbol ? Symbol.toStringTag : 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 */\nfunction 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 if (unmasked) {\n if (isOwn) {\n value[symToStringTag] = tag;\n } else {\n delete value[symToStringTag];\n }\n }\n return result;\n}\n\nexport default getRawTag;\n","/** Used for built-in method references. */\nvar objectProto = Object.prototype;\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 */\nvar nativeObjectToString = objectProto.toString;\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 */\nfunction objectToString(value) {\n return nativeObjectToString.call(value);\n}\n\nexport default objectToString;\n","import Symbol from './_Symbol.js';\nimport getRawTag from './_getRawTag.js';\nimport objectToString from './_objectToString.js';\n\n/** `Object#toString` result references. */\nvar nullTag = '[object Null]',\n undefinedTag = '[object Undefined]';\n\n/** Built-in value references. */\nvar symToStringTag = Symbol ? Symbol.toStringTag : undefined;\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 */\nfunction baseGetTag(value) {\n if (value == null) {\n return value === undefined ? undefinedTag : nullTag;\n }\n return (symToStringTag && symToStringTag in Object(value))\n ? getRawTag(value)\n : objectToString(value);\n}\n\nexport default baseGetTag;\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 */\nfunction overArg(func, transform) {\n return function(arg) {\n return func(transform(arg));\n };\n}\n\nexport default overArg;\n","import overArg from './_overArg.js';\n\n/** Built-in value references. */\nvar getPrototype = overArg(Object.getPrototypeOf, Object);\n\nexport default getPrototype;\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 */\nfunction isObjectLike(value) {\n return value != null && typeof value == 'object';\n}\n\nexport default isObjectLike;\n","import baseGetTag from './_baseGetTag.js';\nimport getPrototype from './_getPrototype.js';\nimport isObjectLike from './isObjectLike.js';\n\n/** `Object#toString` result references. */\nvar objectTag = '[object Object]';\n\n/** Used for built-in method references. */\nvar funcProto = Function.prototype,\n objectProto = Object.prototype;\n\n/** Used to resolve the decompiled source of functions. */\nvar funcToString = funcProto.toString;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/** Used to infer the `Object` constructor. */\nvar objectCtorString = funcToString.call(Object);\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 */\nfunction isPlainObject(value) {\n if (!isObjectLike(value) || baseGetTag(value) != objectTag) {\n return false;\n }\n var proto = getPrototype(value);\n if (proto === null) {\n return true;\n }\n var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;\n return typeof Ctor == 'function' && Ctor instanceof Ctor &&\n funcToString.call(Ctor) == objectCtorString;\n}\n\nexport default isPlainObject;\n","/**\n * Removes all key-value entries from the list cache.\n *\n * @private\n * @name clear\n * @memberOf ListCache\n */\nfunction listCacheClear() {\n this.__data__ = [];\n this.size = 0;\n}\n\nexport default listCacheClear;\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 */\nfunction eq(value, other) {\n return value === other || (value !== value && other !== other);\n}\n\nexport default eq;\n","import eq from './eq.js';\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 */\nfunction assocIndexOf(array, key) {\n var length = array.length;\n while (length--) {\n if (eq(array[length][0], key)) {\n return length;\n }\n }\n return -1;\n}\n\nexport default assocIndexOf;\n","import assocIndexOf from './_assocIndexOf.js';\n\n/** Used for built-in method references. */\nvar arrayProto = Array.prototype;\n\n/** Built-in value references. */\nvar splice = arrayProto.splice;\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 */\nfunction listCacheDelete(key) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n if (index < 0) {\n return false;\n }\n var lastIndex = data.length - 1;\n if (index == lastIndex) {\n data.pop();\n } else {\n splice.call(data, index, 1);\n }\n --this.size;\n return true;\n}\n\nexport default listCacheDelete;\n","import assocIndexOf from './_assocIndexOf.js';\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 */\nfunction listCacheGet(key) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n return index < 0 ? undefined : data[index][1];\n}\n\nexport default listCacheGet;\n","import assocIndexOf from './_assocIndexOf.js';\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 */\nfunction listCacheHas(key) {\n return assocIndexOf(this.__data__, key) > -1;\n}\n\nexport default listCacheHas;\n","import assocIndexOf from './_assocIndexOf.js';\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 */\nfunction 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 return this;\n}\n\nexport default listCacheSet;\n","import listCacheClear from './_listCacheClear.js';\nimport listCacheDelete from './_listCacheDelete.js';\nimport listCacheGet from './_listCacheGet.js';\nimport listCacheHas from './_listCacheHas.js';\nimport listCacheSet from './_listCacheSet.js';\n\n/**\n * Creates an list cache object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction ListCache(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n}\n\n// Add methods to `ListCache`.\nListCache.prototype.clear = listCacheClear;\nListCache.prototype['delete'] = listCacheDelete;\nListCache.prototype.get = listCacheGet;\nListCache.prototype.has = listCacheHas;\nListCache.prototype.set = listCacheSet;\n\nexport default ListCache;\n","import ListCache from './_ListCache.js';\n\n/**\n * Removes all key-value entries from the stack.\n *\n * @private\n * @name clear\n * @memberOf Stack\n */\nfunction stackClear() {\n this.__data__ = new ListCache;\n this.size = 0;\n}\n\nexport default stackClear;\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 */\nfunction stackDelete(key) {\n var data = this.__data__,\n result = data['delete'](key);\n\n this.size = data.size;\n return result;\n}\n\nexport default stackDelete;\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 */\nfunction stackGet(key) {\n return this.__data__.get(key);\n}\n\nexport default stackGet;\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 */\nfunction stackHas(key) {\n return this.__data__.has(key);\n}\n\nexport default stackHas;\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 */\nfunction isObject(value) {\n var type = typeof value;\n return value != null && (type == 'object' || type == 'function');\n}\n\nexport default isObject;\n","import baseGetTag from './_baseGetTag.js';\nimport isObject from './isObject.js';\n\n/** `Object#toString` result references. */\nvar asyncTag = '[object AsyncFunction]',\n funcTag = '[object Function]',\n genTag = '[object GeneratorFunction]',\n proxyTag = '[object Proxy]';\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 */\nfunction isFunction(value) {\n if (!isObject(value)) {\n return false;\n }\n // The use of `Object#toString` avoids issues with the `typeof` operator\n // in Safari 9 which returns 'object' for typed arrays and other constructors.\n var tag = baseGetTag(value);\n return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;\n}\n\nexport default isFunction;\n","import root from './_root.js';\n\n/** Used to detect overreaching core-js shims. */\nvar coreJsData = root['__core-js_shared__'];\n\nexport default coreJsData;\n","import coreJsData from './_coreJsData.js';\n\n/** Used to detect methods masquerading as native. */\nvar maskSrcKey = (function() {\n var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');\n return uid ? ('Symbol(src)_1.' + uid) : '';\n}());\n\n/**\n * Checks if `func` has its source masked.\n *\n * @private\n * @param {Function} func The function to check.\n * @returns {boolean} Returns `true` if `func` is masked, else `false`.\n */\nfunction isMasked(func) {\n return !!maskSrcKey && (maskSrcKey in func);\n}\n\nexport default isMasked;\n","/** Used for built-in method references. */\nvar funcProto = Function.prototype;\n\n/** Used to resolve the decompiled source of functions. */\nvar funcToString = funcProto.toString;\n\n/**\n * Converts `func` to its source code.\n *\n * @private\n * @param {Function} func The function to convert.\n * @returns {string} Returns the source code.\n */\nfunction toSource(func) {\n if (func != null) {\n try {\n return funcToString.call(func);\n } catch (e) {}\n try {\n return (func + '');\n } catch (e) {}\n }\n return '';\n}\n\nexport default toSource;\n","import isFunction from './isFunction.js';\nimport isMasked from './_isMasked.js';\nimport isObject from './isObject.js';\nimport toSource from './_toSource.js';\n\n/**\n * Used to match `RegExp`\n * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).\n */\nvar reRegExpChar = /[\\\\^$.*+?()[\\]{}|]/g;\n\n/** Used to detect host constructors (Safari). */\nvar reIsHostCtor = /^\\[object .+?Constructor\\]$/;\n\n/** Used for built-in method references. */\nvar funcProto = Function.prototype,\n objectProto = Object.prototype;\n\n/** Used to resolve the decompiled source of functions. */\nvar funcToString = funcProto.toString;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/** Used to detect if a method is native. */\nvar reIsNative = RegExp('^' +\n funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\\\$&')\n .replace(/hasOwnProperty|(function).*?(?=\\\\\\()| for .+?(?=\\\\\\])/g, '$1.*?') + '$'\n);\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 */\nfunction baseIsNative(value) {\n if (!isObject(value) || isMasked(value)) {\n return false;\n }\n var pattern = isFunction(value) ? reIsNative : reIsHostCtor;\n return pattern.test(toSource(value));\n}\n\nexport default baseIsNative;\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 */\nfunction getValue(object, key) {\n return object == null ? undefined : object[key];\n}\n\nexport default getValue;\n","import baseIsNative from './_baseIsNative.js';\nimport getValue from './_getValue.js';\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 */\nfunction getNative(object, key) {\n var value = getValue(object, key);\n return baseIsNative(value) ? value : undefined;\n}\n\nexport default getNative;\n","import getNative from './_getNative.js';\nimport root from './_root.js';\n\n/* Built-in method references that are verified to be native. */\nvar Map = getNative(root, 'Map');\n\nexport default Map;\n","import getNative from './_getNative.js';\n\n/* Built-in method references that are verified to be native. */\nvar nativeCreate = getNative(Object, 'create');\n\nexport default nativeCreate;\n","import nativeCreate from './_nativeCreate.js';\n\n/**\n * Removes all key-value entries from the hash.\n *\n * @private\n * @name clear\n * @memberOf Hash\n */\nfunction hashClear() {\n this.__data__ = nativeCreate ? nativeCreate(null) : {};\n this.size = 0;\n}\n\nexport default hashClear;\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 */\nfunction hashDelete(key) {\n var result = this.has(key) && delete this.__data__[key];\n this.size -= result ? 1 : 0;\n return result;\n}\n\nexport default hashDelete;\n","import nativeCreate from './_nativeCreate.js';\n\n/** Used to stand-in for `undefined` hash values. */\nvar HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\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 */\nfunction hashGet(key) {\n var data = this.__data__;\n if (nativeCreate) {\n var result = data[key];\n return result === HASH_UNDEFINED ? undefined : result;\n }\n return hasOwnProperty.call(data, key) ? data[key] : undefined;\n}\n\nexport default hashGet;\n","import nativeCreate from './_nativeCreate.js';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\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 */\nfunction hashHas(key) {\n var data = this.__data__;\n return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);\n}\n\nexport default hashHas;\n","import nativeCreate from './_nativeCreate.js';\n\n/** Used to stand-in for `undefined` hash values. */\nvar HASH_UNDEFINED = '__lodash_hash_undefined__';\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 */\nfunction 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}\n\nexport default hashSet;\n","import hashClear from './_hashClear.js';\nimport hashDelete from './_hashDelete.js';\nimport hashGet from './_hashGet.js';\nimport hashHas from './_hashHas.js';\nimport hashSet from './_hashSet.js';\n\n/**\n * Creates a hash object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\nfunction Hash(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n}\n\n// Add methods to `Hash`.\nHash.prototype.clear = hashClear;\nHash.prototype['delete'] = hashDelete;\nHash.prototype.get = hashGet;\nHash.prototype.has = hashHas;\nHash.prototype.set = hashSet;\n\nexport default Hash;\n","import Hash from './_Hash.js';\nimport ListCache from './_ListCache.js';\nimport Map from './_Map.js';\n\n/**\n * Removes all key-value entries from the map.\n *\n * @private\n * @name clear\n * @memberOf MapCache\n */\nfunction mapCacheClear() {\n this.size = 0;\n this.__data__ = {\n 'hash': new Hash,\n 'map': new (Map || ListCache),\n 'string': new Hash\n };\n}\n\nexport default mapCacheClear;\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 */\nfunction isKeyable(value) {\n var type = typeof value;\n return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')\n ? (value !== '__proto__')\n : (value === null);\n}\n\nexport default isKeyable;\n","import isKeyable from './_isKeyable.js';\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 */\nfunction getMapData(map, key) {\n var data = map.__data__;\n return isKeyable(key)\n ? data[typeof key == 'string' ? 'string' : 'hash']\n : data.map;\n}\n\nexport default getMapData;\n","import getMapData from './_getMapData.js';\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 */\nfunction mapCacheDelete(key) {\n var result = getMapData(this, key)['delete'](key);\n this.size -= result ? 1 : 0;\n return result;\n}\n\nexport default mapCacheDelete;\n","import getMapData from './_getMapData.js';\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 */\nfunction mapCacheGet(key) {\n return getMapData(this, key).get(key);\n}\n\nexport default mapCacheGet;\n","import getMapData from './_getMapData.js';\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 */\nfunction mapCacheHas(key) {\n return getMapData(this, key).has(key);\n}\n\nexport default mapCacheHas;\n","import getMapData from './_getMapData.js';\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 */\nfunction mapCacheSet(key, value) {\n var data = getMapData(this, key),\n size = data.size;\n\n data.set(key, value);\n this.size += data.size == size ? 0 : 1;\n return this;\n}\n\nexport default mapCacheSet;\n","import mapCacheClear from './_mapCacheClear.js';\nimport mapCacheDelete from './_mapCacheDelete.js';\nimport mapCacheGet from './_mapCacheGet.js';\nimport mapCacheHas from './_mapCacheHas.js';\nimport mapCacheSet from './_mapCacheSet.js';\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 */\nfunction MapCache(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n}\n\n// Add methods to `MapCache`.\nMapCache.prototype.clear = mapCacheClear;\nMapCache.prototype['delete'] = mapCacheDelete;\nMapCache.prototype.get = mapCacheGet;\nMapCache.prototype.has = mapCacheHas;\nMapCache.prototype.set = mapCacheSet;\n\nexport default MapCache;\n","import ListCache from './_ListCache.js';\nimport Map from './_Map.js';\nimport MapCache from './_MapCache.js';\n\n/** Used as the size to enable large array optimizations. */\nvar LARGE_ARRAY_SIZE = 200;\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 */\nfunction stackSet(key, value) {\n var data = this.__data__;\n if (data instanceof ListCache) {\n var pairs = data.__data__;\n if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {\n pairs.push([key, value]);\n this.size = ++data.size;\n return this;\n }\n data = this.__data__ = new MapCache(pairs);\n }\n data.set(key, value);\n this.size = data.size;\n return this;\n}\n\nexport default stackSet;\n","import ListCache from './_ListCache.js';\nimport stackClear from './_stackClear.js';\nimport stackDelete from './_stackDelete.js';\nimport stackGet from './_stackGet.js';\nimport stackHas from './_stackHas.js';\nimport stackSet from './_stackSet.js';\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 */\nfunction Stack(entries) {\n var data = this.__data__ = new ListCache(entries);\n this.size = data.size;\n}\n\n// Add methods to `Stack`.\nStack.prototype.clear = stackClear;\nStack.prototype['delete'] = stackDelete;\nStack.prototype.get = stackGet;\nStack.prototype.has = stackHas;\nStack.prototype.set = stackSet;\n\nexport default Stack;\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 */\nfunction 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 return array;\n}\n\nexport default arrayEach;\n","import getNative from './_getNative.js';\n\nvar defineProperty = (function() {\n try {\n var func = getNative(Object, 'defineProperty');\n func({}, '', {});\n return func;\n } catch (e) {}\n}());\n\nexport default defineProperty;\n","import defineProperty from './_defineProperty.js';\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 */\nfunction 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\nexport default baseAssignValue;\n","import baseAssignValue from './_baseAssignValue.js';\nimport eq from './eq.js';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\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 */\nfunction assignValue(object, key, value) {\n var objValue = object[key];\n if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||\n (value === undefined && !(key in object))) {\n baseAssignValue(object, key, value);\n }\n}\n\nexport default assignValue;\n","import assignValue from './_assignValue.js';\nimport baseAssignValue from './_baseAssignValue.js';\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 */\nfunction copyObject(source, props, object, customizer) {\n var isNew = !object;\n object || (object = {});\n\n var index = -1,\n length = props.length;\n\n while (++index < length) {\n var key = props[index];\n\n var newValue = customizer\n ? customizer(object[key], source[key], key, object, source)\n : undefined;\n\n if (newValue === undefined) {\n newValue = source[key];\n }\n if (isNew) {\n baseAssignValue(object, key, newValue);\n } else {\n assignValue(object, key, newValue);\n }\n }\n return object;\n}\n\nexport default copyObject;\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 */\nfunction baseTimes(n, iteratee) {\n var index = -1,\n result = Array(n);\n\n while (++index < n) {\n result[index] = iteratee(index);\n }\n return result;\n}\n\nexport default baseTimes;\n","import baseGetTag from './_baseGetTag.js';\nimport isObjectLike from './isObjectLike.js';\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]';\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 */\nfunction baseIsArguments(value) {\n return isObjectLike(value) && baseGetTag(value) == argsTag;\n}\n\nexport default baseIsArguments;\n","import baseIsArguments from './_baseIsArguments.js';\nimport isObjectLike from './isObjectLike.js';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/** Built-in value references. */\nvar propertyIsEnumerable = objectProto.propertyIsEnumerable;\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 */\nvar isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {\n return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&\n !propertyIsEnumerable.call(value, 'callee');\n};\n\nexport default isArguments;\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 */\nvar isArray = Array.isArray;\n\nexport default isArray;\n","/** Used as references for various `Number` constants. */\nvar MAX_SAFE_INTEGER = 9007199254740991;\n\n/** Used to detect unsigned integer values. */\nvar reIsUint = /^(?:0|[1-9]\\d*)$/;\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 */\nfunction isIndex(value, length) {\n var type = typeof value;\n length = length == null ? MAX_SAFE_INTEGER : length;\n\n return !!length &&\n (type == 'number' ||\n (type != 'symbol' && reIsUint.test(value))) &&\n (value > -1 && value % 1 == 0 && value < length);\n}\n\nexport default isIndex;\n","/** Used as references for various `Number` constants. */\nvar MAX_SAFE_INTEGER = 9007199254740991;\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 */\nfunction isLength(value) {\n return typeof value == 'number' &&\n value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;\n}\n\nexport default isLength;\n","import baseGetTag from './_baseGetTag.js';\nimport isLength from './isLength.js';\nimport isObjectLike from './isObjectLike.js';\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]',\n arrayTag = '[object Array]',\n boolTag = '[object Boolean]',\n dateTag = '[object Date]',\n errorTag = '[object Error]',\n funcTag = '[object Function]',\n mapTag = '[object Map]',\n numberTag = '[object Number]',\n objectTag = '[object Object]',\n regexpTag = '[object RegExp]',\n setTag = '[object Set]',\n stringTag = '[object String]',\n weakMapTag = '[object WeakMap]';\n\nvar 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\n/** Used to identify `toStringTag` values of typed arrays. */\nvar typedArrayTags = {};\ntypedArrayTags[float32Tag] = typedArrayTags[float64Tag] =\ntypedArrayTags[int8Tag] = typedArrayTags[int16Tag] =\ntypedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =\ntypedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =\ntypedArrayTags[uint32Tag] = true;\ntypedArrayTags[argsTag] = typedArrayTags[arrayTag] =\ntypedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =\ntypedArrayTags[dataViewTag] = typedArrayTags[dateTag] =\ntypedArrayTags[errorTag] = typedArrayTags[funcTag] =\ntypedArrayTags[mapTag] = typedArrayTags[numberTag] =\ntypedArrayTags[objectTag] = typedArrayTags[regexpTag] =\ntypedArrayTags[setTag] = typedArrayTags[stringTag] =\ntypedArrayTags[weakMapTag] = false;\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 */\nfunction baseIsTypedArray(value) {\n return isObjectLike(value) &&\n isLength(value.length) && !!typedArrayTags[baseGetTag(value)];\n}\n\nexport default baseIsTypedArray;\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 */\nfunction baseUnary(func) {\n return function(value) {\n return func(value);\n };\n}\n\nexport default baseUnary;\n","import baseIsTypedArray from './_baseIsTypedArray.js';\nimport baseUnary from './_baseUnary.js';\nimport nodeUtil from './_nodeUtil.js';\n\n/* Node.js helper references. */\nvar nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;\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 */\nvar isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;\n\nexport default isTypedArray;\n","import baseTimes from './_baseTimes.js';\nimport isArguments from './isArguments.js';\nimport isArray from './isArray.js';\nimport isBuffer from './isBuffer.js';\nimport isIndex from './_isIndex.js';\nimport isTypedArray from './isTypedArray.js';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\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 */\nfunction 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)) &&\n !(skipIndexes && (\n // Safari 9 has enumerable `arguments.length` in strict mode.\n key == 'length' ||\n // Node.js 0.10 has enumerable non-index properties on buffers.\n (isBuff && (key == 'offset' || key == 'parent')) ||\n // PhantomJS 2 has enumerable non-index properties on typed arrays.\n (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||\n // Skip index properties.\n isIndex(key, length)\n ))) {\n result.push(key);\n }\n }\n return result;\n}\n\nexport default arrayLikeKeys;\n","/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\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 */\nfunction isPrototype(value) {\n var Ctor = value && value.constructor,\n proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;\n\n return value === proto;\n}\n\nexport default isPrototype;\n","import overArg from './_overArg.js';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeKeys = overArg(Object.keys, Object);\n\nexport default nativeKeys;\n","import isPrototype from './_isPrototype.js';\nimport nativeKeys from './_nativeKeys.js';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\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 */\nfunction baseKeys(object) {\n if (!isPrototype(object)) {\n return nativeKeys(object);\n }\n var result = [];\n for (var key in Object(object)) {\n if (hasOwnProperty.call(object, key) && key != 'constructor') {\n result.push(key);\n }\n }\n return result;\n}\n\nexport default baseKeys;\n","import isFunction from './isFunction.js';\nimport isLength from './isLength.js';\n\n/**\n * Checks if `value` is array-like. A value is considered array-like if it's\n * not a function and has a `value.length` that's an integer greater than or\n * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is array-like, else `false`.\n * @example\n *\n * _.isArrayLike([1, 2, 3]);\n * // => true\n *\n * _.isArrayLike(document.body.children);\n * // => true\n *\n * _.isArrayLike('abc');\n * // => true\n *\n * _.isArrayLike(_.noop);\n * // => false\n */\nfunction isArrayLike(value) {\n return value != null && isLength(value.length) && !isFunction(value);\n}\n\nexport default isArrayLike;\n","import arrayLikeKeys from './_arrayLikeKeys.js';\nimport baseKeys from './_baseKeys.js';\nimport isArrayLike from './isArrayLike.js';\n\n/**\n * Creates an array of the own enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects. See the\n * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n * for more details.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keys(new Foo);\n * // => ['a', 'b'] (iteration order is not guaranteed)\n *\n * _.keys('hi');\n * // => ['0', '1']\n */\nfunction keys(object) {\n return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);\n}\n\nexport default keys;\n","import copyObject from './_copyObject.js';\nimport keys from './keys.js';\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 */\nfunction baseAssign(object, source) {\n return object && copyObject(source, keys(source), object);\n}\n\nexport default baseAssign;\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 */\nfunction nativeKeysIn(object) {\n var result = [];\n if (object != null) {\n for (var key in Object(object)) {\n result.push(key);\n }\n }\n return result;\n}\n\nexport default nativeKeysIn;\n","import isObject from './isObject.js';\nimport isPrototype from './_isPrototype.js';\nimport nativeKeysIn from './_nativeKeysIn.js';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\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 */\nfunction baseKeysIn(object) {\n if (!isObject(object)) {\n return nativeKeysIn(object);\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 return result;\n}\n\nexport default baseKeysIn;\n","import arrayLikeKeys from './_arrayLikeKeys.js';\nimport baseKeysIn from './_baseKeysIn.js';\nimport isArrayLike from './isArrayLike.js';\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 */\nfunction keysIn(object) {\n return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);\n}\n\nexport default keysIn;\n","import copyObject from './_copyObject.js';\nimport keysIn from './keysIn.js';\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 */\nfunction baseAssignIn(object, source) {\n return object && copyObject(source, keysIn(source), object);\n}\n\nexport default baseAssignIn;\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 */\nfunction copyArray(source, array) {\n var index = -1,\n length = source.length;\n\n array || (array = Array(length));\n while (++index < length) {\n array[index] = source[index];\n }\n return array;\n}\n\nexport default copyArray;\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 */\nfunction 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 if (predicate(value, index, array)) {\n result[resIndex++] = value;\n }\n }\n return result;\n}\n\nexport default arrayFilter;\n","/**\n * This method returns a new empty array.\n *\n * @static\n * @memberOf _\n * @since 4.13.0\n * @category Util\n * @returns {Array} Returns the new empty array.\n * @example\n *\n * var arrays = _.times(2, _.stubArray);\n *\n * console.log(arrays);\n * // => [[], []]\n *\n * console.log(arrays[0] === arrays[1]);\n * // => false\n */\nfunction stubArray() {\n return [];\n}\n\nexport default stubArray;\n","import arrayFilter from './_arrayFilter.js';\nimport stubArray from './stubArray.js';\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Built-in value references. */\nvar propertyIsEnumerable = objectProto.propertyIsEnumerable;\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeGetSymbols = Object.getOwnPropertySymbols;\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 */\nvar getSymbols = !nativeGetSymbols ? stubArray : function(object) {\n if (object == null) {\n return [];\n }\n object = Object(object);\n return arrayFilter(nativeGetSymbols(object), function(symbol) {\n return propertyIsEnumerable.call(object, symbol);\n });\n};\n\nexport default getSymbols;\n","import copyObject from './_copyObject.js';\nimport getSymbols from './_getSymbols.js';\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 */\nfunction copySymbols(source, object) {\n return copyObject(source, getSymbols(source), object);\n}\n\nexport default copySymbols;\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 */\nfunction 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 return array;\n}\n\nexport default arrayPush;\n","import arrayPush from './_arrayPush.js';\nimport getPrototype from './_getPrototype.js';\nimport getSymbols from './_getSymbols.js';\nimport stubArray from './stubArray.js';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeGetSymbols = Object.getOwnPropertySymbols;\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 */\nvar getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) {\n var result = [];\n while (object) {\n arrayPush(result, getSymbols(object));\n object = getPrototype(object);\n }\n return result;\n};\n\nexport default getSymbolsIn;\n","import copyObject from './_copyObject.js';\nimport getSymbolsIn from './_getSymbolsIn.js';\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 */\nfunction copySymbolsIn(source, object) {\n return copyObject(source, getSymbolsIn(source), object);\n}\n\nexport default copySymbolsIn;\n","import arrayPush from './_arrayPush.js';\nimport isArray from './isArray.js';\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 */\nfunction baseGetAllKeys(object, keysFunc, symbolsFunc) {\n var result = keysFunc(object);\n return isArray(object) ? result : arrayPush(result, symbolsFunc(object));\n}\n\nexport default baseGetAllKeys;\n","import baseGetAllKeys from './_baseGetAllKeys.js';\nimport getSymbols from './_getSymbols.js';\nimport keys from './keys.js';\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 */\nfunction getAllKeys(object) {\n return baseGetAllKeys(object, keys, getSymbols);\n}\n\nexport default getAllKeys;\n","import baseGetAllKeys from './_baseGetAllKeys.js';\nimport getSymbolsIn from './_getSymbolsIn.js';\nimport keysIn from './keysIn.js';\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 */\nfunction getAllKeysIn(object) {\n return baseGetAllKeys(object, keysIn, getSymbolsIn);\n}\n\nexport default getAllKeysIn;\n","import getNative from './_getNative.js';\nimport root from './_root.js';\n\n/* Built-in method references that are verified to be native. */\nvar DataView = getNative(root, 'DataView');\n\nexport default DataView;\n","import getNative from './_getNative.js';\nimport root from './_root.js';\n\n/* Built-in method references that are verified to be native. */\nvar Promise = getNative(root, 'Promise');\n\nexport default Promise;\n","import getNative from './_getNative.js';\nimport root from './_root.js';\n\n/* Built-in method references that are verified to be native. */\nvar Set = getNative(root, 'Set');\n\nexport default Set;\n","import getNative from './_getNative.js';\nimport root from './_root.js';\n\n/* Built-in method references that are verified to be native. */\nvar WeakMap = getNative(root, 'WeakMap');\n\nexport default WeakMap;\n","import DataView from './_DataView.js';\nimport Map from './_Map.js';\nimport Promise from './_Promise.js';\nimport Set from './_Set.js';\nimport WeakMap from './_WeakMap.js';\nimport baseGetTag from './_baseGetTag.js';\nimport toSource from './_toSource.js';\n\n/** `Object#toString` result references. */\nvar mapTag = '[object Map]',\n objectTag = '[object Object]',\n promiseTag = '[object Promise]',\n setTag = '[object Set]',\n weakMapTag = '[object WeakMap]';\n\nvar dataViewTag = '[object DataView]';\n\n/** Used to detect maps, sets, and weakmaps. */\nvar dataViewCtorString = toSource(DataView),\n mapCtorString = toSource(Map),\n promiseCtorString = toSource(Promise),\n setCtorString = toSource(Set),\n weakMapCtorString = toSource(WeakMap);\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 */\nvar getTag = baseGetTag;\n\n// Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.\nif ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||\n (Map && getTag(new Map) != mapTag) ||\n (Promise && getTag(Promise.resolve()) != promiseTag) ||\n (Set && getTag(new Set) != setTag) ||\n (WeakMap && getTag(new WeakMap) != weakMapTag)) {\n getTag = function(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: return dataViewTag;\n case mapCtorString: return mapTag;\n case promiseCtorString: return promiseTag;\n case setCtorString: return setTag;\n case weakMapCtorString: return weakMapTag;\n }\n }\n return result;\n };\n}\n\nexport default getTag;\n","/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\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 */\nfunction initCloneArray(array) {\n var length = array.length,\n result = new array.constructor(length);\n\n // Add properties assigned by `RegExp#exec`.\n if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {\n result.index = array.index;\n result.input = array.input;\n }\n return result;\n}\n\nexport default initCloneArray;\n","import root from './_root.js';\n\n/** Built-in value references. */\nvar Uint8Array = root.Uint8Array;\n\nexport default Uint8Array;\n","import Uint8Array from './_Uint8Array.js';\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 */\nfunction cloneArrayBuffer(arrayBuffer) {\n var result = new arrayBuffer.constructor(arrayBuffer.byteLength);\n new Uint8Array(result).set(new Uint8Array(arrayBuffer));\n return result;\n}\n\nexport default cloneArrayBuffer;\n","import cloneArrayBuffer from './_cloneArrayBuffer.js';\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 */\nfunction cloneDataView(dataView, isDeep) {\n var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;\n return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);\n}\n\nexport default cloneDataView;\n","/** Used to match `RegExp` flags from their coerced string values. */\nvar reFlags = /\\w*$/;\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 */\nfunction cloneRegExp(regexp) {\n var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));\n result.lastIndex = regexp.lastIndex;\n return result;\n}\n\nexport default cloneRegExp;\n","import Symbol from './_Symbol.js';\n\n/** Used to convert symbols to primitives and strings. */\nvar symbolProto = Symbol ? Symbol.prototype : undefined,\n symbolValueOf = symbolProto ? symbolProto.valueOf : undefined;\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 */\nfunction cloneSymbol(symbol) {\n return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};\n}\n\nexport default cloneSymbol;\n","import cloneArrayBuffer from './_cloneArrayBuffer.js';\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 */\nfunction cloneTypedArray(typedArray, isDeep) {\n var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;\n return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);\n}\n\nexport default cloneTypedArray;\n","import cloneArrayBuffer from './_cloneArrayBuffer.js';\nimport cloneDataView from './_cloneDataView.js';\nimport cloneRegExp from './_cloneRegExp.js';\nimport cloneSymbol from './_cloneSymbol.js';\nimport cloneTypedArray from './_cloneTypedArray.js';\n\n/** `Object#toString` result references. */\nvar boolTag = '[object Boolean]',\n dateTag = '[object Date]',\n mapTag = '[object Map]',\n numberTag = '[object Number]',\n regexpTag = '[object RegExp]',\n setTag = '[object Set]',\n stringTag = '[object String]',\n symbolTag = '[object Symbol]';\n\nvar 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\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 */\nfunction initCloneByTag(object, tag, isDeep) {\n var Ctor = object.constructor;\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: case float64Tag:\n case int8Tag: case int16Tag: case int32Tag:\n case uint8Tag: case uint8ClampedTag: case uint16Tag: 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\nexport default initCloneByTag;\n","import isObject from './isObject.js';\n\n/** Built-in value references. */\nvar objectCreate = Object.create;\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 */\nvar baseCreate = (function() {\n function object() {}\n return function(proto) {\n if (!isObject(proto)) {\n return {};\n }\n if (objectCreate) {\n return objectCreate(proto);\n }\n object.prototype = proto;\n var result = new object;\n object.prototype = undefined;\n return result;\n };\n}());\n\nexport default baseCreate;\n","import baseCreate from './_baseCreate.js';\nimport getPrototype from './_getPrototype.js';\nimport isPrototype from './_isPrototype.js';\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 */\nfunction initCloneObject(object) {\n return (typeof object.constructor == 'function' && !isPrototype(object))\n ? baseCreate(getPrototype(object))\n : {};\n}\n\nexport default initCloneObject;\n","import getTag from './_getTag.js';\nimport isObjectLike from './isObjectLike.js';\n\n/** `Object#toString` result references. */\nvar mapTag = '[object Map]';\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 */\nfunction baseIsMap(value) {\n return isObjectLike(value) && getTag(value) == mapTag;\n}\n\nexport default baseIsMap;\n","import baseIsMap from './_baseIsMap.js';\nimport baseUnary from './_baseUnary.js';\nimport nodeUtil from './_nodeUtil.js';\n\n/* Node.js helper references. */\nvar nodeIsMap = nodeUtil && nodeUtil.isMap;\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 */\nvar isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;\n\nexport default isMap;\n","import getTag from './_getTag.js';\nimport isObjectLike from './isObjectLike.js';\n\n/** `Object#toString` result references. */\nvar setTag = '[object Set]';\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 */\nfunction baseIsSet(value) {\n return isObjectLike(value) && getTag(value) == setTag;\n}\n\nexport default baseIsSet;\n","import baseIsSet from './_baseIsSet.js';\nimport baseUnary from './_baseUnary.js';\nimport nodeUtil from './_nodeUtil.js';\n\n/* Node.js helper references. */\nvar nodeIsSet = nodeUtil && nodeUtil.isSet;\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 */\nvar isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;\n\nexport default isSet;\n","import Stack from './_Stack.js';\nimport arrayEach from './_arrayEach.js';\nimport assignValue from './_assignValue.js';\nimport baseAssign from './_baseAssign.js';\nimport baseAssignIn from './_baseAssignIn.js';\nimport cloneBuffer from './_cloneBuffer.js';\nimport copyArray from './_copyArray.js';\nimport copySymbols from './_copySymbols.js';\nimport copySymbolsIn from './_copySymbolsIn.js';\nimport getAllKeys from './_getAllKeys.js';\nimport getAllKeysIn from './_getAllKeysIn.js';\nimport getTag from './_getTag.js';\nimport initCloneArray from './_initCloneArray.js';\nimport initCloneByTag from './_initCloneByTag.js';\nimport initCloneObject from './_initCloneObject.js';\nimport isArray from './isArray.js';\nimport isBuffer from './isBuffer.js';\nimport isMap from './isMap.js';\nimport isObject from './isObject.js';\nimport isSet from './isSet.js';\nimport keys from './keys.js';\nimport keysIn from './keysIn.js';\n\n/** Used to compose bitmasks for cloning. */\nvar CLONE_DEEP_FLAG = 1,\n CLONE_FLAT_FLAG = 2,\n CLONE_SYMBOLS_FLAG = 4;\n\n/** `Object#toString` result references. */\nvar argsTag = '[object Arguments]',\n arrayTag = '[object Array]',\n boolTag = '[object Boolean]',\n dateTag = '[object Date]',\n errorTag = '[object Error]',\n funcTag = '[object Function]',\n genTag = '[object GeneratorFunction]',\n mapTag = '[object Map]',\n numberTag = '[object Number]',\n objectTag = '[object Object]',\n regexpTag = '[object RegExp]',\n setTag = '[object Set]',\n stringTag = '[object String]',\n symbolTag = '[object Symbol]',\n weakMapTag = '[object WeakMap]';\n\nvar 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\n/** Used to identify `toStringTag` values supported by `_.clone`. */\nvar cloneableTags = {};\ncloneableTags[argsTag] = cloneableTags[arrayTag] =\ncloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =\ncloneableTags[boolTag] = cloneableTags[dateTag] =\ncloneableTags[float32Tag] = cloneableTags[float64Tag] =\ncloneableTags[int8Tag] = cloneableTags[int16Tag] =\ncloneableTags[int32Tag] = cloneableTags[mapTag] =\ncloneableTags[numberTag] = cloneableTags[objectTag] =\ncloneableTags[regexpTag] = cloneableTags[setTag] =\ncloneableTags[stringTag] = cloneableTags[symbolTag] =\ncloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =\ncloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;\ncloneableTags[errorTag] = cloneableTags[funcTag] =\ncloneableTags[weakMapTag] = false;\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 */\nfunction 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 if (result !== undefined) {\n return result;\n }\n if (!isObject(value)) {\n return value;\n }\n var isArr = isArray(value);\n if (isArr) {\n result = initCloneArray(value);\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 if (tag == objectTag || tag == argsTag || (isFunc && !object)) {\n result = (isFlat || isFunc) ? {} : initCloneObject(value);\n if (!isDeep) {\n return isFlat\n ? copySymbolsIn(value, baseAssignIn(result, value))\n : copySymbols(value, baseAssign(result, value));\n }\n } else {\n if (!cloneableTags[tag]) {\n return object ? value : {};\n }\n result = initCloneByTag(value, tag, isDeep);\n }\n }\n // Check for circular references and return its corresponding clone.\n stack || (stack = new Stack);\n var stacked = stack.get(value);\n if (stacked) {\n return stacked;\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\n ? (isFlat ? getAllKeysIn : getAllKeys)\n : (isFlat ? keysIn : keys);\n\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 }\n // Recursively populate clone (susceptible to call stack limits).\n assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));\n });\n return result;\n}\n\nexport default baseClone;\n","import baseClone from './_baseClone.js';\n\n/** Used to compose bitmasks for cloning. */\nvar CLONE_SYMBOLS_FLAG = 4;\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 */\nfunction clone(value) {\n return baseClone(value, CLONE_SYMBOLS_FLAG);\n}\n\nexport default clone;\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 */\nfunction 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 return result;\n}\n\nexport default arrayMap;\n","import baseGetTag from './_baseGetTag.js';\nimport isObjectLike from './isObjectLike.js';\n\n/** `Object#toString` result references. */\nvar symbolTag = '[object Symbol]';\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 */\nfunction isSymbol(value) {\n return typeof value == 'symbol' ||\n (isObjectLike(value) && baseGetTag(value) == symbolTag);\n}\n\nexport default isSymbol;\n","import MapCache from './_MapCache.js';\n\n/** Error message constants. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\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 */\nfunction memoize(func, resolver) {\n if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n var memoized = function() {\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 var result = func.apply(this, args);\n memoized.cache = cache.set(key, result) || cache;\n return result;\n };\n memoized.cache = new (memoize.Cache || MapCache);\n return memoized;\n}\n\n// Expose `MapCache`.\nmemoize.Cache = MapCache;\n\nexport default memoize;\n","import memoize from './memoize.js';\n\n/** Used as the maximum memoize cache size. */\nvar MAX_MEMOIZE_SIZE = 500;\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 */\nfunction memoizeCapped(func) {\n var result = memoize(func, function(key) {\n if (cache.size === MAX_MEMOIZE_SIZE) {\n cache.clear();\n }\n return key;\n });\n\n var cache = result.cache;\n return result;\n}\n\nexport default memoizeCapped;\n","import memoizeCapped from './_memoizeCapped.js';\n\n/** Used to match property names within property paths. */\nvar rePropName = /[^.[\\]]+|\\[(?:(-?\\d+(?:\\.\\d+)?)|([\"'])((?:(?!\\2)[^\\\\]|\\\\.)*?)\\2)\\]|(?=(?:\\.|\\[\\])(?:\\.|\\[\\]|$))/g;\n\n/** Used to match backslashes in property paths. */\nvar reEscapeChar = /\\\\(\\\\)?/g;\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 */\nvar stringToPath = memoizeCapped(function(string) {\n var result = [];\n if (string.charCodeAt(0) === 46 /* . */) {\n result.push('');\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\nexport default stringToPath;\n","import isSymbol from './isSymbol.js';\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0;\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 */\nfunction toKey(value) {\n if (typeof value == 'string' || isSymbol(value)) {\n return value;\n }\n var result = (value + '');\n return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n}\n\nexport default toKey;\n","import Symbol from './_Symbol.js';\nimport arrayMap from './_arrayMap.js';\nimport isArray from './isArray.js';\nimport isSymbol from './isSymbol.js';\n\n/** Used as references for various `Number` constants. */\nvar INFINITY = 1 / 0;\n\n/** Used to convert symbols to primitives and strings. */\nvar symbolProto = Symbol ? Symbol.prototype : undefined,\n symbolToString = symbolProto ? symbolProto.toString : undefined;\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 */\nfunction 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 if (isArray(value)) {\n // Recursively convert values (susceptible to call stack limits).\n return arrayMap(value, baseToString) + '';\n }\n if (isSymbol(value)) {\n return symbolToString ? symbolToString.call(value) : '';\n }\n var result = (value + '');\n return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n}\n\nexport default baseToString;\n","import baseToString from './_baseToString.js';\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 */\nfunction toString(value) {\n return value == null ? '' : baseToString(value);\n}\n\nexport default toString;\n","import arrayMap from './_arrayMap.js';\nimport copyArray from './_copyArray.js';\nimport isArray from './isArray.js';\nimport isSymbol from './isSymbol.js';\nimport stringToPath from './_stringToPath.js';\nimport toKey from './_toKey.js';\nimport toString from './toString.js';\n\n/**\n * Converts `value` to a property path array.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Util\n * @param {*} value The value to convert.\n * @returns {Array} Returns the new property path array.\n * @example\n *\n * _.toPath('a.b.c');\n * // => ['a', 'b', 'c']\n *\n * _.toPath('a[0].b.c');\n * // => ['a', '0', 'b', 'c']\n */\nfunction toPath(value) {\n if (isArray(value)) {\n return arrayMap(value, toKey);\n }\n return isSymbol(value) ? [value] : copyArray(stringToPath(toString(value)));\n}\n\nexport default toPath;\n","import baseClone from './_baseClone.js';\n\n/** Used to compose bitmasks for cloning. */\nvar CLONE_DEEP_FLAG = 1,\n CLONE_SYMBOLS_FLAG = 4;\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 */\nfunction cloneDeep(value) {\n return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);\n}\n\nexport default cloneDeep;\n","import clone from 'lodash/clone';\nimport toPath from 'lodash/toPath';\nimport * as React from 'react';\n\n// Assertions\n\n/** @private is the value an empty array? */\nexport const isEmptyArray = (value?: any) =>\n Array.isArray(value) && value.length === 0;\n\n/** @private is the given object a Function? */\nexport const isFunction = (obj: any): obj is Function =>\n typeof obj === 'function';\n\n/** @private is the given object an Object? */\nexport const isObject = (obj: any): obj is Object =>\n obj !== null && typeof obj === 'object';\n\n/** @private is the given object an integer? */\nexport const isInteger = (obj: any): boolean =>\n String(Math.floor(Number(obj))) === obj;\n\n/** @private is the given object a string? */\nexport const isString = (obj: any): obj is string =>\n Object.prototype.toString.call(obj) === '[object String]';\n\n/** @private is the given object a NaN? */\n// eslint-disable-next-line no-self-compare\nexport const isNaN = (obj: any): boolean => obj !== obj;\n\n/** @private Does a React component have exactly 0 children? */\nexport const isEmptyChildren = (children: any): boolean =>\n React.Children.count(children) === 0;\n\n/** @private is the given object/value a promise? */\nexport const isPromise = (value: any): value is PromiseLike
=>\n isObject(value) && isFunction(value.then);\n\n/** @private is the given object/value a type of synthetic event? */\nexport const isInputEvent = (value: any): value is React.SyntheticEvent =>\n value && isObject(value) && isObject(value.target);\n\n/**\n * Same as document.activeElement but wraps in a try-catch block. In IE it is\n * not safe to call document.activeElement if there is nothing focused.\n *\n * The activeElement will be null only if the document or document body is not\n * yet defined.\n *\n * @param {?Document} doc Defaults to current document.\n * @return {Element | null}\n * @see https://github.com/facebook/fbjs/blob/master/packages/fbjs/src/core/dom/getActiveElement.js\n */\nexport function getActiveElement(doc?: Document): Element | null {\n doc = doc || (typeof document !== 'undefined' ? document : undefined);\n if (typeof doc === 'undefined') {\n return null;\n }\n try {\n return doc.activeElement || doc.body;\n } catch (e) {\n return doc.body;\n }\n}\n\n/**\n * Deeply get a value from an object via its path.\n */\nexport function getIn(\n obj: any,\n key: string | string[],\n def?: any,\n p: number = 0\n) {\n const path = toPath(key);\n while (obj && p < path.length) {\n obj = obj[path[p++]];\n }\n return obj === undefined ? def : obj;\n}\n\n/**\n * Deeply set a value from in object via it's path. If the value at `path`\n * has changed, return a shallow copy of obj with `value` set at `path`.\n * If `value` has not changed, return the original `obj`.\n *\n * Existing objects / arrays along `path` are also shallow copied. Sibling\n * objects along path retain the same internal js reference. Since new\n * objects / arrays are only created along `path`, we can test if anything\n * changed in a nested structure by comparing the object's reference in\n * the old and new object, similar to how russian doll cache invalidation\n * works.\n *\n * In earlier versions of this function, which used cloneDeep, there were\n * issues whereby settings a nested value would mutate the parent\n * instead of creating a new object. `clone` avoids that bug making a\n * shallow copy of the objects along the update path\n * so no object is mutated in place.\n *\n * Before changing this function, please read through the following\n * discussions.\n *\n * @see https://github.com/developit/linkstate\n * @see https://github.com/jaredpalmer/formik/pull/123\n */\nexport function setIn(obj: any, path: string, value: any): any {\n let res: any = clone(obj); // this keeps inheritance when obj is a class\n let resVal: any = res;\n let i = 0;\n let pathArray = toPath(path);\n\n for (; i < pathArray.length - 1; i++) {\n const currentPath: string = pathArray[i];\n let currentObj: any = getIn(obj, pathArray.slice(0, i + 1));\n\n if (currentObj && (isObject(currentObj) || Array.isArray(currentObj))) {\n resVal = resVal[currentPath] = clone(currentObj);\n } else {\n const nextPath: string = pathArray[i + 1];\n resVal = resVal[currentPath] =\n isInteger(nextPath) && Number(nextPath) >= 0 ? [] : {};\n }\n }\n\n // Return original object if new value is the same as current\n if ((i === 0 ? obj : resVal)[pathArray[i]] === value) {\n return obj;\n }\n\n if (value === undefined) {\n delete resVal[pathArray[i]];\n } else {\n resVal[pathArray[i]] = value;\n }\n\n // If the path array has a single element, the loop did not run.\n // Deleting on `resVal` had no effect in this scenario, so we delete on the result instead.\n if (i === 0 && value === undefined) {\n delete res[pathArray[i]];\n }\n\n return res;\n}\n\n/**\n * Recursively a set the same value for all keys and arrays nested object, cloning\n * @param object\n * @param value\n * @param visited\n * @param response\n */\nexport function setNestedObjectValues(\n object: any,\n value: any,\n visited: any = new WeakMap(),\n response: any = {}\n): T {\n for (let k of Object.keys(object)) {\n const val = object[k];\n if (isObject(val)) {\n if (!visited.get(val)) {\n visited.set(val, true);\n // In order to keep array values consistent for both dot path and\n // bracket syntax, we need to check if this is an array so that\n // this will output { friends: [true] } and not { friends: { \"0\": true } }\n response[k] = Array.isArray(val) ? [] : {};\n setNestedObjectValues(val, value, visited, response[k]);\n }\n } else {\n response[k] = value;\n }\n }\n\n return response;\n}\n","import * as React from 'react';\nimport { FormikContextType } from './types';\nimport invariant from 'tiny-warning';\n\nexport const FormikContext = React.createContext>(\n undefined as any\n);\nFormikContext.displayName = 'FormikContext';\n\nexport const FormikProvider = FormikContext.Provider;\nexport const FormikConsumer = FormikContext.Consumer;\n\nexport function useFormikContext() {\n const formik = React.useContext>(FormikContext);\n\n invariant(\n !!formik,\n `Formik context is undefined, please verify you are calling useFormikContext() as child of a component.`\n );\n\n return formik;\n}\n","import * as React from 'react';\nimport isEqual from 'react-fast-compare';\nimport deepmerge from 'deepmerge';\nimport isPlainObject from 'lodash/isPlainObject';\nimport {\n FormikConfig,\n FormikErrors,\n FormikState,\n FormikTouched,\n FormikValues,\n FormikProps,\n FieldMetaProps,\n FieldHelperProps,\n FieldInputProps,\n FormikHelpers,\n FormikHandlers,\n} from './types';\nimport {\n isFunction,\n isString,\n setIn,\n isEmptyChildren,\n isPromise,\n setNestedObjectValues,\n getActiveElement,\n getIn,\n isObject,\n} from './utils';\nimport { FormikProvider } from './FormikContext';\nimport invariant from 'tiny-warning';\n\ntype FormikMessage =\n | { type: 'SUBMIT_ATTEMPT' }\n | { type: 'SUBMIT_FAILURE' }\n | { type: 'SUBMIT_SUCCESS' }\n | { type: 'SET_ISVALIDATING'; payload: boolean }\n | { type: 'SET_ISSUBMITTING'; payload: boolean }\n | { type: 'SET_VALUES'; payload: Values }\n | { type: 'SET_FIELD_VALUE'; payload: { field: string; value?: any } }\n | { type: 'SET_FIELD_TOUCHED'; payload: { field: string; value?: boolean } }\n | { type: 'SET_FIELD_ERROR'; payload: { field: string; value?: string } }\n | { type: 'SET_TOUCHED'; payload: FormikTouched }\n | { type: 'SET_ERRORS'; payload: FormikErrors }\n | { type: 'SET_STATUS'; payload: any }\n | {\n type: 'SET_FORMIK_STATE';\n payload: (s: FormikState) => FormikState;\n }\n | {\n type: 'RESET_FORM';\n payload: FormikState;\n };\n\n// State reducer\nfunction formikReducer(\n state: FormikState,\n msg: FormikMessage\n) {\n switch (msg.type) {\n case 'SET_VALUES':\n return { ...state, values: msg.payload };\n case 'SET_TOUCHED':\n return { ...state, touched: msg.payload };\n case 'SET_ERRORS':\n if (isEqual(state.errors, msg.payload)) {\n return state;\n }\n\n return { ...state, errors: msg.payload };\n case 'SET_STATUS':\n return { ...state, status: msg.payload };\n case 'SET_ISSUBMITTING':\n return { ...state, isSubmitting: msg.payload };\n case 'SET_ISVALIDATING':\n return { ...state, isValidating: msg.payload };\n case 'SET_FIELD_VALUE':\n return {\n ...state,\n values: setIn(state.values, msg.payload.field, msg.payload.value),\n };\n case 'SET_FIELD_TOUCHED':\n return {\n ...state,\n touched: setIn(state.touched, msg.payload.field, msg.payload.value),\n };\n case 'SET_FIELD_ERROR':\n return {\n ...state,\n errors: setIn(state.errors, msg.payload.field, msg.payload.value),\n };\n case 'RESET_FORM':\n return { ...state, ...msg.payload };\n case 'SET_FORMIK_STATE':\n return msg.payload(state);\n case 'SUBMIT_ATTEMPT':\n return {\n ...state,\n touched: setNestedObjectValues>(\n state.values,\n true\n ),\n isSubmitting: true,\n submitCount: state.submitCount + 1,\n };\n case 'SUBMIT_FAILURE':\n return {\n ...state,\n isSubmitting: false,\n };\n case 'SUBMIT_SUCCESS':\n return {\n ...state,\n isSubmitting: false,\n };\n default:\n return state;\n }\n}\n\n// Initial empty states // objects\nconst emptyErrors: FormikErrors = {};\nconst emptyTouched: FormikTouched = {};\n\n// This is an object that contains a map of all registered fields\n// and their validate functions\ninterface FieldRegistry {\n [field: string]: {\n validate: (value: any) => string | Promise | undefined;\n };\n}\n\nexport function useFormik({\n validateOnChange = true,\n validateOnBlur = true,\n validateOnMount = false,\n isInitialValid,\n enableReinitialize = false,\n onSubmit,\n ...rest\n}: FormikConfig) {\n const props = {\n validateOnChange,\n validateOnBlur,\n validateOnMount,\n onSubmit,\n ...rest,\n };\n const initialValues = React.useRef(props.initialValues);\n const initialErrors = React.useRef(props.initialErrors || emptyErrors);\n const initialTouched = React.useRef(props.initialTouched || emptyTouched);\n const initialStatus = React.useRef(props.initialStatus);\n const isMounted = React.useRef(false);\n const fieldRegistry = React.useRef({});\n if (__DEV__) {\n // eslint-disable-next-line react-hooks/rules-of-hooks\n React.useEffect(() => {\n invariant(\n typeof isInitialValid === 'undefined',\n 'isInitialValid has been deprecated and will be removed in future versions of Formik. Please use initialErrors or validateOnMount instead.'\n );\n // eslint-disable-next-line\n }, []);\n }\n\n React.useEffect(() => {\n isMounted.current = true;\n\n return () => {\n isMounted.current = false;\n };\n }, []);\n\n const [state, dispatch] = React.useReducer<\n React.Reducer, FormikMessage>\n >(formikReducer, {\n values: props.initialValues,\n errors: props.initialErrors || emptyErrors,\n touched: props.initialTouched || emptyTouched,\n status: props.initialStatus,\n isSubmitting: false,\n isValidating: false,\n submitCount: 0,\n });\n\n const runValidateHandler = React.useCallback(\n (values: Values, field?: string): Promise> => {\n return new Promise((resolve, reject) => {\n const maybePromisedErrors = (props.validate as any)(values, field);\n if (maybePromisedErrors == null) {\n // use loose null check here on purpose\n resolve(emptyErrors);\n } else if (isPromise(maybePromisedErrors)) {\n (maybePromisedErrors as Promise).then(\n errors => {\n resolve(errors || emptyErrors);\n },\n actualException => {\n if (process.env.NODE_ENV !== 'production') {\n console.warn(\n `Warning: An unhandled error was caught during validation in `,\n actualException\n );\n }\n\n reject(actualException);\n }\n );\n } else {\n resolve(maybePromisedErrors);\n }\n });\n },\n [props.validate]\n );\n\n /**\n * Run validation against a Yup schema and optionally run a function if successful\n */\n const runValidationSchema = React.useCallback(\n (values: Values, field?: string): Promise> => {\n const validationSchema = props.validationSchema;\n const schema = isFunction(validationSchema)\n ? validationSchema(field)\n : validationSchema;\n const promise =\n field && schema.validateAt\n ? schema.validateAt(field, values)\n : validateYupSchema(values, schema);\n return new Promise((resolve, reject) => {\n promise.then(\n () => {\n resolve(emptyErrors);\n },\n (err: any) => {\n // Yup will throw a validation error if validation fails. We catch those and\n // resolve them into Formik errors. We can sniff if something is a Yup error\n // by checking error.name.\n // @see https://github.com/jquense/yup#validationerrorerrors-string--arraystring-value-any-path-string\n if (err.name === 'ValidationError') {\n resolve(yupToFormErrors(err));\n } else {\n // We throw any other errors\n if (process.env.NODE_ENV !== 'production') {\n console.warn(\n `Warning: An unhandled error was caught during validation in `,\n err\n );\n }\n\n reject(err);\n }\n }\n );\n });\n },\n [props.validationSchema]\n );\n\n const runSingleFieldLevelValidation = React.useCallback(\n (field: string, value: void | string): Promise => {\n return new Promise(resolve =>\n resolve(fieldRegistry.current[field].validate(value) as string)\n );\n },\n []\n );\n\n const runFieldLevelValidations = React.useCallback(\n (values: Values): Promise> => {\n const fieldKeysWithValidation: string[] = Object.keys(\n fieldRegistry.current\n ).filter(f => isFunction(fieldRegistry.current[f].validate));\n\n // Construct an array with all of the field validation functions\n const fieldValidations: Promise[] =\n fieldKeysWithValidation.length > 0\n ? fieldKeysWithValidation.map(f =>\n runSingleFieldLevelValidation(f, getIn(values, f))\n )\n : [Promise.resolve('DO_NOT_DELETE_YOU_WILL_BE_FIRED')]; // use special case ;)\n\n return Promise.all(fieldValidations).then((fieldErrorsList: string[]) =>\n fieldErrorsList.reduce((prev, curr, index) => {\n if (curr === 'DO_NOT_DELETE_YOU_WILL_BE_FIRED') {\n return prev;\n }\n if (curr) {\n prev = setIn(prev, fieldKeysWithValidation[index], curr);\n }\n return prev;\n }, {})\n );\n },\n [runSingleFieldLevelValidation]\n );\n\n // Run all validations and return the result\n const runAllValidations = React.useCallback(\n (values: Values) => {\n return Promise.all([\n runFieldLevelValidations(values),\n props.validationSchema ? runValidationSchema(values) : {},\n props.validate ? runValidateHandler(values) : {},\n ]).then(([fieldErrors, schemaErrors, validateErrors]) => {\n const combinedErrors = deepmerge.all>(\n [fieldErrors, schemaErrors, validateErrors],\n { arrayMerge }\n );\n return combinedErrors;\n });\n },\n [\n props.validate,\n props.validationSchema,\n runFieldLevelValidations,\n runValidateHandler,\n runValidationSchema,\n ]\n );\n\n // Run all validations methods and update state accordingly\n const validateFormWithHighPriority = useEventCallback(\n (values: Values = state.values) => {\n dispatch({ type: 'SET_ISVALIDATING', payload: true });\n return runAllValidations(values).then(combinedErrors => {\n if (!!isMounted.current) {\n dispatch({ type: 'SET_ISVALIDATING', payload: false });\n dispatch({ type: 'SET_ERRORS', payload: combinedErrors });\n }\n return combinedErrors;\n });\n }\n );\n\n React.useEffect(() => {\n if (\n validateOnMount &&\n isMounted.current === true &&\n isEqual(initialValues.current, props.initialValues)\n ) {\n validateFormWithHighPriority(initialValues.current);\n }\n }, [validateOnMount, validateFormWithHighPriority]);\n\n const resetForm = React.useCallback(\n (nextState?: Partial>) => {\n const values =\n nextState && nextState.values\n ? nextState.values\n : initialValues.current;\n const errors =\n nextState && nextState.errors\n ? nextState.errors\n : initialErrors.current\n ? initialErrors.current\n : props.initialErrors || {};\n const touched =\n nextState && nextState.touched\n ? nextState.touched\n : initialTouched.current\n ? initialTouched.current\n : props.initialTouched || {};\n const status =\n nextState && nextState.status\n ? nextState.status\n : initialStatus.current\n ? initialStatus.current\n : props.initialStatus;\n initialValues.current = values;\n initialErrors.current = errors;\n initialTouched.current = touched;\n initialStatus.current = status;\n\n const dispatchFn = () => {\n dispatch({\n type: 'RESET_FORM',\n payload: {\n isSubmitting: !!nextState && !!nextState.isSubmitting,\n errors,\n touched,\n status,\n values,\n isValidating: !!nextState && !!nextState.isValidating,\n submitCount:\n !!nextState &&\n !!nextState.submitCount &&\n typeof nextState.submitCount === 'number'\n ? nextState.submitCount\n : 0,\n },\n });\n };\n\n if (props.onReset) {\n const maybePromisedOnReset = (props.onReset as any)(\n state.values,\n imperativeMethods\n );\n\n if (isPromise(maybePromisedOnReset)) {\n (maybePromisedOnReset as Promise).then(dispatchFn);\n } else {\n dispatchFn();\n }\n } else {\n dispatchFn();\n }\n },\n [props.initialErrors, props.initialStatus, props.initialTouched]\n );\n\n React.useEffect(() => {\n if (\n isMounted.current === true &&\n !isEqual(initialValues.current, props.initialValues)\n ) {\n if (enableReinitialize) {\n initialValues.current = props.initialValues;\n resetForm();\n }\n\n if (validateOnMount) {\n validateFormWithHighPriority(initialValues.current);\n }\n }\n }, [\n enableReinitialize,\n props.initialValues,\n resetForm,\n validateOnMount,\n validateFormWithHighPriority,\n ]);\n\n React.useEffect(() => {\n if (\n enableReinitialize &&\n isMounted.current === true &&\n !isEqual(initialErrors.current, props.initialErrors)\n ) {\n initialErrors.current = props.initialErrors || emptyErrors;\n dispatch({\n type: 'SET_ERRORS',\n payload: props.initialErrors || emptyErrors,\n });\n }\n }, [enableReinitialize, props.initialErrors]);\n\n React.useEffect(() => {\n if (\n enableReinitialize &&\n isMounted.current === true &&\n !isEqual(initialTouched.current, props.initialTouched)\n ) {\n initialTouched.current = props.initialTouched || emptyTouched;\n dispatch({\n type: 'SET_TOUCHED',\n payload: props.initialTouched || emptyTouched,\n });\n }\n }, [enableReinitialize, props.initialTouched]);\n\n React.useEffect(() => {\n if (\n enableReinitialize &&\n isMounted.current === true &&\n !isEqual(initialStatus.current, props.initialStatus)\n ) {\n initialStatus.current = props.initialStatus;\n dispatch({\n type: 'SET_STATUS',\n payload: props.initialStatus,\n });\n }\n }, [enableReinitialize, props.initialStatus, props.initialTouched]);\n\n const validateField = useEventCallback((name: string) => {\n // This will efficiently validate a single field by avoiding state\n // changes if the validation function is synchronous. It's different from\n // what is called when using validateForm.\n\n if (\n fieldRegistry.current[name] &&\n isFunction(fieldRegistry.current[name].validate)\n ) {\n const value = getIn(state.values, name);\n const maybePromise = fieldRegistry.current[name].validate(value);\n if (isPromise(maybePromise)) {\n // Only flip isValidating if the function is async.\n dispatch({ type: 'SET_ISVALIDATING', payload: true });\n return maybePromise\n .then((x: any) => x)\n .then((error: string) => {\n dispatch({\n type: 'SET_FIELD_ERROR',\n payload: { field: name, value: error },\n });\n dispatch({ type: 'SET_ISVALIDATING', payload: false });\n });\n } else {\n dispatch({\n type: 'SET_FIELD_ERROR',\n payload: {\n field: name,\n value: maybePromise as string | undefined,\n },\n });\n return Promise.resolve(maybePromise as string | undefined);\n }\n } else if (props.validationSchema) {\n dispatch({ type: 'SET_ISVALIDATING', payload: true });\n return runValidationSchema(state.values, name)\n .then((x: any) => x)\n .then((error: any) => {\n dispatch({\n type: 'SET_FIELD_ERROR',\n payload: { field: name, value: error[name] },\n });\n dispatch({ type: 'SET_ISVALIDATING', payload: false });\n });\n }\n\n return Promise.resolve();\n });\n\n const registerField = React.useCallback((name: string, { validate }: any) => {\n fieldRegistry.current[name] = {\n validate,\n };\n }, []);\n\n const unregisterField = React.useCallback((name: string) => {\n delete fieldRegistry.current[name];\n }, []);\n\n const setTouched = useEventCallback(\n (touched: FormikTouched, shouldValidate?: boolean) => {\n dispatch({ type: 'SET_TOUCHED', payload: touched });\n const willValidate =\n shouldValidate === undefined ? validateOnBlur : shouldValidate;\n return willValidate\n ? validateFormWithHighPriority(state.values)\n : Promise.resolve();\n }\n );\n\n const setErrors = React.useCallback((errors: FormikErrors) => {\n dispatch({ type: 'SET_ERRORS', payload: errors });\n }, []);\n\n const setValues = useEventCallback(\n (values: React.SetStateAction, shouldValidate?: boolean) => {\n const resolvedValues = isFunction(values) ? values(state.values) : values;\n\n dispatch({ type: 'SET_VALUES', payload: resolvedValues });\n const willValidate =\n shouldValidate === undefined ? validateOnChange : shouldValidate;\n return willValidate\n ? validateFormWithHighPriority(resolvedValues)\n : Promise.resolve();\n }\n );\n\n const setFieldError = React.useCallback(\n (field: string, value: string | undefined) => {\n dispatch({\n type: 'SET_FIELD_ERROR',\n payload: { field, value },\n });\n },\n []\n );\n\n const setFieldValue = useEventCallback(\n (field: string, value: any, shouldValidate?: boolean) => {\n dispatch({\n type: 'SET_FIELD_VALUE',\n payload: {\n field,\n value,\n },\n });\n const willValidate =\n shouldValidate === undefined ? validateOnChange : shouldValidate;\n return willValidate\n ? validateFormWithHighPriority(setIn(state.values, field, value))\n : Promise.resolve();\n }\n );\n\n const executeChange = React.useCallback(\n (eventOrTextValue: string | React.ChangeEvent, maybePath?: string) => {\n // By default, assume that the first argument is a string. This allows us to use\n // handleChange with React Native and React Native Web's onChangeText prop which\n // provides just the value of the input.\n let field = maybePath;\n let val = eventOrTextValue;\n let parsed;\n // If the first argument is not a string though, it has to be a synthetic React Event (or a fake one),\n // so we handle like we would a normal HTML change event.\n if (!isString(eventOrTextValue)) {\n // If we can, persist the event\n // @see https://reactjs.org/docs/events.html#event-pooling\n if ((eventOrTextValue as any).persist) {\n (eventOrTextValue as React.ChangeEvent).persist();\n }\n const target = eventOrTextValue.target\n ? (eventOrTextValue as React.ChangeEvent).target\n : (eventOrTextValue as React.ChangeEvent).currentTarget;\n\n const {\n type,\n name,\n id,\n value,\n checked,\n outerHTML,\n options,\n multiple,\n } = target;\n\n field = maybePath ? maybePath : name ? name : id;\n if (!field && __DEV__) {\n warnAboutMissingIdentifier({\n htmlContent: outerHTML,\n documentationAnchorLink: 'handlechange-e-reactchangeeventany--void',\n handlerName: 'handleChange',\n });\n }\n val = /number|range/.test(type)\n ? ((parsed = parseFloat(value)), isNaN(parsed) ? '' : parsed)\n : /checkbox/.test(type) // checkboxes\n ? getValueForCheckbox(getIn(state.values, field!), checked, value)\n : options && multiple //