{"version":3,"file":"popper.min.js","sources":["https:\/\/edu.betha.com.br\/lib\/amd\/src\/popper.js"],"sourcesContent":["\/**!\n * @fileOverview Kickass library to create and place poppers near their reference elements.\n * @version 1.12.6\n * @license\n * Copyright (c) 2016 Federico Zivolo and contributors\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and\/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in all\n * copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\n * SOFTWARE.\n *\/\n(function (global, factory) {\n  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :\n  typeof define === 'function' && define.amd ? define(factory) :\n  (global.Popper = factory());\n}(this, (function () { 'use strict';\n\nvar isBrowser = typeof window !== 'undefined' && typeof window.document !== 'undefined';\nvar longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];\nvar timeoutDuration = 0;\nfor (var i = 0; i < longerTimeoutBrowsers.length; i += 1) {\n  if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {\n    timeoutDuration = 1;\n    break;\n  }\n}\n\nfunction microtaskDebounce(fn) {\n  var called = false;\n  return function () {\n    if (called) {\n      return;\n    }\n    called = true;\n    Promise.resolve().then(function () {\n      called = false;\n      fn();\n    });\n  };\n}\n\nfunction taskDebounce(fn) {\n  var scheduled = false;\n  return function () {\n    if (!scheduled) {\n      scheduled = true;\n      setTimeout(function () {\n        scheduled = false;\n        fn();\n      }, timeoutDuration);\n    }\n  };\n}\n\nvar supportsMicroTasks = isBrowser && window.Promise;\n\n\/**\n* Create a debounced version of a method, that's asynchronously deferred\n* but called in the minimum time possible.\n*\n* @method\n* @memberof Popper.Utils\n* @argument {Function} fn\n* @returns {Function}\n*\/\nvar debounce = supportsMicroTasks ? microtaskDebounce : taskDebounce;\n\n\/**\n * Check if the given variable is a function\n * @method\n * @memberof Popper.Utils\n * @argument {Any} functionToCheck - variable to check\n * @returns {Boolean} answer to: is a function?\n *\/\nfunction isFunction(functionToCheck) {\n  var getType = {};\n  return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]';\n}\n\n\/**\n * Get CSS computed property of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Eement} element\n * @argument {String} property\n *\/\nfunction getStyleComputedProperty(element, property) {\n  if (element.nodeType !== 1) {\n    return [];\n  }\n  \/\/ NOTE: 1 DOM access here\n  var css = window.getComputedStyle(element, null);\n  return property ? css[property] : css;\n}\n\n\/**\n * Returns the parentNode or the host of the element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} parent\n *\/\nfunction getParentNode(element) {\n  if (element.nodeName === 'HTML') {\n    return element;\n  }\n  return element.parentNode || element.host;\n}\n\n\/**\n * Returns the scrolling parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} scroll parent\n *\/\nfunction getScrollParent(element) {\n  \/\/ Return body, `getScroll` will take care to get the correct `scrollTop` from it\n  if (!element) {\n    return window.document.body;\n  }\n\n  switch (element.nodeName) {\n    case 'HTML':\n    case 'BODY':\n      return element.ownerDocument.body;\n    case '#document':\n      return element.body;\n  }\n\n  \/\/ Firefox want us to check `-x` and `-y` variations as well\n\n  var _getStyleComputedProp = getStyleComputedProperty(element),\n      overflow = _getStyleComputedProp.overflow,\n      overflowX = _getStyleComputedProp.overflowX,\n      overflowY = _getStyleComputedProp.overflowY;\n\n  if (\/(auto|scroll)\/.test(overflow + overflowY + overflowX)) {\n    return element;\n  }\n\n  return getScrollParent(getParentNode(element));\n}\n\n\/**\n * Returns the offset parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} offset parent\n *\/\nfunction getOffsetParent(element) {\n  \/\/ NOTE: 1 DOM access here\n  var offsetParent = element && element.offsetParent;\n  var nodeName = offsetParent && offsetParent.nodeName;\n\n  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {\n    if (element) {\n      return element.ownerDocument.documentElement;\n    }\n\n    return window.document.documentElement;\n  }\n\n  \/\/ .offsetParent will return the closest TD or TABLE in case\n  \/\/ no offsetParent is present, I hate this job...\n  if (['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 && getStyleComputedProperty(offsetParent, 'position') === 'static') {\n    return getOffsetParent(offsetParent);\n  }\n\n  return offsetParent;\n}\n\nfunction isOffsetContainer(element) {\n  var nodeName = element.nodeName;\n\n  if (nodeName === 'BODY') {\n    return false;\n  }\n  return nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element;\n}\n\n\/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n *\/\nfunction getRoot(node) {\n  if (node.parentNode !== null) {\n    return getRoot(node.parentNode);\n  }\n\n  return node;\n}\n\n\/**\n * Finds the offset parent common to the two provided nodes\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element1\n * @argument {Element} element2\n * @returns {Element} common offset parent\n *\/\nfunction findCommonOffsetParent(element1, element2) {\n  \/\/ This check is needed to avoid errors in case one of the elements isn't defined for any reason\n  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n    return window.document.documentElement;\n  }\n\n  \/\/ Here we make sure to give as \"start\" the element that comes first in the DOM\n  var order = element1.compareDocumentPosition(element2) & Node.DOCUMENT_POSITION_FOLLOWING;\n  var start = order ? element1 : element2;\n  var end = order ? element2 : element1;\n\n  \/\/ Get common ancestor container\n  var range = document.createRange();\n  range.setStart(start, 0);\n  range.setEnd(end, 0);\n  var commonAncestorContainer = range.commonAncestorContainer;\n\n  \/\/ Both nodes are inside #document\n\n  if (element1 !== commonAncestorContainer && element2 !== commonAncestorContainer || start.contains(end)) {\n    if (isOffsetContainer(commonAncestorContainer)) {\n      return commonAncestorContainer;\n    }\n\n    return getOffsetParent(commonAncestorContainer);\n  }\n\n  \/\/ one of the nodes is inside shadowDOM, find which one\n  var element1root = getRoot(element1);\n  if (element1root.host) {\n    return findCommonOffsetParent(element1root.host, element2);\n  } else {\n    return findCommonOffsetParent(element1, getRoot(element2).host);\n  }\n}\n\n\/**\n * Gets the scroll value of the given element in the given side (top and left)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {String} side `top` or `left`\n * @returns {number} amount of scrolled pixels\n *\/\nfunction getScroll(element) {\n  var side = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'top';\n\n  var upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';\n  var nodeName = element.nodeName;\n\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    var html = element.ownerDocument.documentElement;\n    var scrollingElement = element.ownerDocument.scrollingElement || html;\n    return scrollingElement[upperSide];\n  }\n\n  return element[upperSide];\n}\n\n\/*\n * Sum or subtract the element scroll values (left and top) from a given rect object\n * @method\n * @memberof Popper.Utils\n * @param {Object} rect - Rect object you want to change\n * @param {HTMLElement} element - The element from the function reads the scroll values\n * @param {Boolean} subtract - set to true if you want to subtract the scroll values\n * @return {Object} rect - The modifier rect object\n *\/\nfunction includeScroll(rect, element) {\n  var subtract = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;\n\n  var scrollTop = getScroll(element, 'top');\n  var scrollLeft = getScroll(element, 'left');\n  var modifier = subtract ? -1 : 1;\n  rect.top += scrollTop * modifier;\n  rect.bottom += scrollTop * modifier;\n  rect.left += scrollLeft * modifier;\n  rect.right += scrollLeft * modifier;\n  return rect;\n}\n\n\/*\n * Helper to detect borders of a given element\n * @method\n * @memberof Popper.Utils\n * @param {CSSStyleDeclaration} styles\n * Result of `getStyleComputedProperty` on the given element\n * @param {String} axis - `x` or `y`\n * @return {number} borders - The borders size of the given axis\n *\/\n\nfunction getBordersSize(styles, axis) {\n  var sideA = axis === 'x' ? 'Left' : 'Top';\n  var sideB = sideA === 'Left' ? 'Right' : 'Bottom';\n\n  return +styles['border' + sideA + 'Width'].split('px')[0] + +styles['border' + sideB + 'Width'].split('px')[0];\n}\n\n\/**\n * Tells if you are running Internet Explorer 10\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean} isIE10\n *\/\nvar isIE10 = undefined;\n\nvar isIE10$1 = function () {\n  if (isIE10 === undefined) {\n    isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1;\n  }\n  return isIE10;\n};\n\nfunction getSize(axis, body, html, computedStyle) {\n  return Math.max(body['offset' + axis], body['scroll' + axis], html['client' + axis], html['offset' + axis], html['scroll' + axis], isIE10$1() ? html['offset' + axis] + computedStyle['margin' + (axis === 'Height' ? 'Top' : 'Left')] + computedStyle['margin' + (axis === 'Height' ? 'Bottom' : 'Right')] : 0);\n}\n\nfunction getWindowSizes() {\n  var body = window.document.body;\n  var html = window.document.documentElement;\n  var computedStyle = isIE10$1() && window.getComputedStyle(html);\n\n  return {\n    height: getSize('Height', body, html, computedStyle),\n    width: getSize('Width', body, html, computedStyle)\n  };\n}\n\nvar classCallCheck = function (instance, Constructor) {\n  if (!(instance instanceof Constructor)) {\n    throw new TypeError(\"Cannot call a class as a function\");\n  }\n};\n\nvar createClass = function () {\n  function defineProperties(target, props) {\n    for (var i = 0; i < props.length; i++) {\n      var descriptor = props[i];\n      descriptor.enumerable = descriptor.enumerable || false;\n      descriptor.configurable = true;\n      if (\"value\" in descriptor) descriptor.writable = true;\n      Object.defineProperty(target, descriptor.key, descriptor);\n    }\n  }\n\n  return function (Constructor, protoProps, staticProps) {\n    if (protoProps) defineProperties(Constructor.prototype, protoProps);\n    if (staticProps) defineProperties(Constructor, staticProps);\n    return Constructor;\n  };\n}();\n\n\n\n\n\nvar defineProperty = function (obj, key, value) {\n  if (key in obj) {\n    Object.defineProperty(obj, key, {\n      value: value,\n      enumerable: true,\n      configurable: true,\n      writable: true\n    });\n  } else {\n    obj[key] = value;\n  }\n\n  return obj;\n};\n\nvar _extends = Object.assign || function (target) {\n  for (var i = 1; i < arguments.length; i++) {\n    var source = arguments[i];\n\n    for (var key in source) {\n      if (Object.prototype.hasOwnProperty.call(source, key)) {\n        target[key] = source[key];\n      }\n    }\n  }\n\n  return target;\n};\n\n\/**\n * Given element offsets, generate an output similar to getBoundingClientRect\n * @method\n * @memberof Popper.Utils\n * @argument {Object} offsets\n * @returns {Object} ClientRect like output\n *\/\nfunction getClientRect(offsets) {\n  return _extends({}, offsets, {\n    right: offsets.left + offsets.width,\n    bottom: offsets.top + offsets.height\n  });\n}\n\n\/**\n * Get bounding client rect of given element\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} element\n * @return {Object} client rect\n *\/\nfunction getBoundingClientRect(element) {\n  var rect = {};\n\n  \/\/ IE10 10 FIX: Please, don't ask, the element isn't\n  \/\/ considered in DOM in some circumstances...\n  \/\/ This isn't reproducible in IE10 compatibility mode of IE11\n  if (isIE10$1()) {\n    try {\n      rect = element.getBoundingClientRect();\n      var scrollTop = getScroll(element, 'top');\n      var scrollLeft = getScroll(element, 'left');\n      rect.top += scrollTop;\n      rect.left += scrollLeft;\n      rect.bottom += scrollTop;\n      rect.right += scrollLeft;\n    } catch (err) {}\n  } else {\n    rect = element.getBoundingClientRect();\n  }\n\n  var result = {\n    left: rect.left,\n    top: rect.top,\n    width: rect.right - rect.left,\n    height: rect.bottom - rect.top\n  };\n\n  \/\/ subtract scrollbar size from sizes\n  var sizes = element.nodeName === 'HTML' ? getWindowSizes() : {};\n  var width = sizes.width || element.clientWidth || result.right - result.left;\n  var height = sizes.height || element.clientHeight || result.bottom - result.top;\n\n  var horizScrollbar = element.offsetWidth - width;\n  var vertScrollbar = element.offsetHeight - height;\n\n  \/\/ if an hypothetical scrollbar is detected, we must be sure it's not a `border`\n  \/\/ we make this check conditional for performance reasons\n  if (horizScrollbar || vertScrollbar) {\n    var styles = getStyleComputedProperty(element);\n    horizScrollbar -= getBordersSize(styles, 'x');\n    vertScrollbar -= getBordersSize(styles, 'y');\n\n    result.width -= horizScrollbar;\n    result.height -= vertScrollbar;\n  }\n\n  return getClientRect(result);\n}\n\nfunction getOffsetRectRelativeToArbitraryNode(children, parent) {\n  var isIE10 = isIE10$1();\n  var isHTML = parent.nodeName === 'HTML';\n  var childrenRect = getBoundingClientRect(children);\n  var parentRect = getBoundingClientRect(parent);\n  var scrollParent = getScrollParent(children);\n\n  var styles = getStyleComputedProperty(parent);\n  var borderTopWidth = +styles.borderTopWidth.split('px')[0];\n  var borderLeftWidth = +styles.borderLeftWidth.split('px')[0];\n\n  var offsets = getClientRect({\n    top: childrenRect.top - parentRect.top - borderTopWidth,\n    left: childrenRect.left - parentRect.left - borderLeftWidth,\n    width: childrenRect.width,\n    height: childrenRect.height\n  });\n  offsets.marginTop = 0;\n  offsets.marginLeft = 0;\n\n  \/\/ Subtract margins of documentElement in case it's being used as parent\n  \/\/ we do this only on HTML because it's the only element that behaves\n  \/\/ differently when margins are applied to it. The margins are included in\n  \/\/ the box of the documentElement, in the other cases not.\n  if (!isIE10 && isHTML) {\n    var marginTop = +styles.marginTop.split('px')[0];\n    var marginLeft = +styles.marginLeft.split('px')[0];\n\n    offsets.top -= borderTopWidth - marginTop;\n    offsets.bottom -= borderTopWidth - marginTop;\n    offsets.left -= borderLeftWidth - marginLeft;\n    offsets.right -= borderLeftWidth - marginLeft;\n\n    \/\/ Attach marginTop and marginLeft because in some circumstances we may need them\n    offsets.marginTop = marginTop;\n    offsets.marginLeft = marginLeft;\n  }\n\n  if (isIE10 ? parent.contains(scrollParent) : parent === scrollParent && scrollParent.nodeName !== 'BODY') {\n    offsets = includeScroll(offsets, parent);\n  }\n\n  return offsets;\n}\n\nfunction getViewportOffsetRectRelativeToArtbitraryNode(element) {\n  var html = element.ownerDocument.documentElement;\n  var relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);\n  var width = Math.max(html.clientWidth, window.innerWidth || 0);\n  var height = Math.max(html.clientHeight, window.innerHeight || 0);\n\n  var scrollTop = getScroll(html);\n  var scrollLeft = getScroll(html, 'left');\n\n  var offset = {\n    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,\n    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,\n    width: width,\n    height: height\n  };\n\n  return getClientRect(offset);\n}\n\n\/**\n * Check if the given element is fixed or is inside a fixed parent\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {Element} customContainer\n * @returns {Boolean} answer to \"isFixed?\"\n *\/\nfunction isFixed(element) {\n  var nodeName = element.nodeName;\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    return false;\n  }\n  if (getStyleComputedProperty(element, 'position') === 'fixed') {\n    return true;\n  }\n  return isFixed(getParentNode(element));\n}\n\n\/**\n * Computed the boundaries limits and return them\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} popper\n * @param {HTMLElement} reference\n * @param {number} padding\n * @param {HTMLElement} boundariesElement - Element used to define the boundaries\n * @returns {Object} Coordinates of the boundaries\n *\/\nfunction getBoundaries(popper, reference, padding, boundariesElement) {\n  \/\/ NOTE: 1 DOM access here\n  var boundaries = { top: 0, left: 0 };\n  var offsetParent = findCommonOffsetParent(popper, reference);\n\n  \/\/ Handle viewport case\n  if (boundariesElement === 'viewport') {\n    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent);\n  } else {\n    \/\/ Handle other cases based on DOM element used as boundaries\n    var boundariesNode = void 0;\n    if (boundariesElement === 'scrollParent') {\n      boundariesNode = getScrollParent(getParentNode(popper));\n      if (boundariesNode.nodeName === 'BODY') {\n        boundariesNode = popper.ownerDocument.documentElement;\n      }\n    } else if (boundariesElement === 'window') {\n      boundariesNode = popper.ownerDocument.documentElement;\n    } else {\n      boundariesNode = boundariesElement;\n    }\n\n    var offsets = getOffsetRectRelativeToArbitraryNode(boundariesNode, offsetParent);\n\n    \/\/ In case of HTML, we need a different computation\n    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {\n      var _getWindowSizes = getWindowSizes(),\n          height = _getWindowSizes.height,\n          width = _getWindowSizes.width;\n\n      boundaries.top += offsets.top - offsets.marginTop;\n      boundaries.bottom = height + offsets.top;\n      boundaries.left += offsets.left - offsets.marginLeft;\n      boundaries.right = width + offsets.left;\n    } else {\n      \/\/ for all the other DOM elements, this one is good\n      boundaries = offsets;\n    }\n  }\n\n  \/\/ Add paddings\n  boundaries.left += padding;\n  boundaries.top += padding;\n  boundaries.right -= padding;\n  boundaries.bottom -= padding;\n\n  return boundaries;\n}\n\nfunction getArea(_ref) {\n  var width = _ref.width,\n      height = _ref.height;\n\n  return width * height;\n}\n\n\/**\n * Utility used to transform the `auto` placement to the placement with more\n * available space.\n * @method\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n *\/\nfunction computeAutoPlacement(placement, refRect, popper, reference, boundariesElement) {\n  var padding = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : 0;\n\n  if (placement.indexOf('auto') === -1) {\n    return placement;\n  }\n\n  var boundaries = getBoundaries(popper, reference, padding, boundariesElement);\n\n  var rects = {\n    top: {\n      width: boundaries.width,\n      height: refRect.top - boundaries.top\n    },\n    right: {\n      width: boundaries.right - refRect.right,\n      height: boundaries.height\n    },\n    bottom: {\n      width: boundaries.width,\n      height: boundaries.bottom - refRect.bottom\n    },\n    left: {\n      width: refRect.left - boundaries.left,\n      height: boundaries.height\n    }\n  };\n\n  var sortedAreas = Object.keys(rects).map(function (key) {\n    return _extends({\n      key: key\n    }, rects[key], {\n      area: getArea(rects[key])\n    });\n  }).sort(function (a, b) {\n    return b.area - a.area;\n  });\n\n  var filteredAreas = sortedAreas.filter(function (_ref2) {\n    var width = _ref2.width,\n        height = _ref2.height;\n    return width >= popper.clientWidth && height >= popper.clientHeight;\n  });\n\n  var computedPlacement = filteredAreas.length > 0 ? filteredAreas[0].key : sortedAreas[0].key;\n\n  var variation = placement.split('-')[1];\n\n  return computedPlacement + (variation ? '-' + variation : '');\n}\n\n\/**\n * Get offsets to the reference element\n * @method\n * @memberof Popper.Utils\n * @param {Object} state\n * @param {Element} popper - the popper element\n * @param {Element} reference - the reference element (the popper will be relative to this)\n * @returns {Object} An object containing the offsets which will be applied to the popper\n *\/\nfunction getReferenceOffsets(state, popper, reference) {\n  var commonOffsetParent = findCommonOffsetParent(popper, reference);\n  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent);\n}\n\n\/**\n * Get the outer sizes of the given element (offset size + margins)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Object} object containing width and height properties\n *\/\nfunction getOuterSizes(element) {\n  var styles = window.getComputedStyle(element);\n  var x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);\n  var y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);\n  var result = {\n    width: element.offsetWidth + y,\n    height: element.offsetHeight + x\n  };\n  return result;\n}\n\n\/**\n * Get the opposite placement of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement\n * @returns {String} flipped placement\n *\/\nfunction getOppositePlacement(placement) {\n  var hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n  return placement.replace(\/left|right|bottom|top\/g, function (matched) {\n    return hash[matched];\n  });\n}\n\n\/**\n * Get offsets to the popper\n * @method\n * @memberof Popper.Utils\n * @param {Object} position - CSS position the Popper will get applied\n * @param {HTMLElement} popper - the popper element\n * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)\n * @param {String} placement - one of the valid placement options\n * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper\n *\/\nfunction getPopperOffsets(popper, referenceOffsets, placement) {\n  placement = placement.split('-')[0];\n\n  \/\/ Get popper node sizes\n  var popperRect = getOuterSizes(popper);\n\n  \/\/ Add position, width and height to our offsets object\n  var popperOffsets = {\n    width: popperRect.width,\n    height: popperRect.height\n  };\n\n  \/\/ depending by the popper placement we have to compute its offsets slightly differently\n  var isHoriz = ['right', 'left'].indexOf(placement) !== -1;\n  var mainSide = isHoriz ? 'top' : 'left';\n  var secondarySide = isHoriz ? 'left' : 'top';\n  var measurement = isHoriz ? 'height' : 'width';\n  var secondaryMeasurement = !isHoriz ? 'height' : 'width';\n\n  popperOffsets[mainSide] = referenceOffsets[mainSide] + referenceOffsets[measurement] \/ 2 - popperRect[measurement] \/ 2;\n  if (placement === secondarySide) {\n    popperOffsets[secondarySide] = referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];\n  } else {\n    popperOffsets[secondarySide] = referenceOffsets[getOppositePlacement(secondarySide)];\n  }\n\n  return popperOffsets;\n}\n\n\/**\n * Mimics the `find` method of Array\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n *\/\nfunction find(arr, check) {\n  \/\/ use native find if supported\n  if (Array.prototype.find) {\n    return arr.find(check);\n  }\n\n  \/\/ use `filter` to obtain the same behavior of `find`\n  return arr.filter(check)[0];\n}\n\n\/**\n * Return the index of the matching object\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n *\/\nfunction findIndex(arr, prop, value) {\n  \/\/ use native findIndex if supported\n  if (Array.prototype.findIndex) {\n    return arr.findIndex(function (cur) {\n      return cur[prop] === value;\n    });\n  }\n\n  \/\/ use `find` + `indexOf` if `findIndex` isn't supported\n  var match = find(arr, function (obj) {\n    return obj[prop] === value;\n  });\n  return arr.indexOf(match);\n}\n\n\/**\n * Loop trough the list of modifiers and run them in order,\n * each of them will then edit the data object.\n * @method\n * @memberof Popper.Utils\n * @param {dataObject} data\n * @param {Array} modifiers\n * @param {String} ends - Optional modifier name used as stopper\n * @returns {dataObject}\n *\/\nfunction runModifiers(modifiers, data, ends) {\n  var modifiersToRun = ends === undefined ? modifiers : modifiers.slice(0, findIndex(modifiers, 'name', ends));\n\n  modifiersToRun.forEach(function (modifier) {\n    if (modifier['function']) {\n      \/\/ eslint-disable-line dot-notation\n      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');\n    }\n    var fn = modifier['function'] || modifier.fn; \/\/ eslint-disable-line dot-notation\n    if (modifier.enabled && isFunction(fn)) {\n      \/\/ Add properties to offsets to make them a complete clientRect object\n      \/\/ we do this before each modifier to make sure the previous one doesn't\n      \/\/ mess with these values\n      data.offsets.popper = getClientRect(data.offsets.popper);\n      data.offsets.reference = getClientRect(data.offsets.reference);\n\n      data = fn(data, modifier);\n    }\n  });\n\n  return data;\n}\n\n\/**\n * Updates the position of the popper, computing the new offsets and applying\n * the new style.<br \/>\n * Prefer `scheduleUpdate` over `update` because of performance reasons.\n * @method\n * @memberof Popper\n *\/\nfunction update() {\n  \/\/ if popper is destroyed, don't perform any further update\n  if (this.state.isDestroyed) {\n    return;\n  }\n\n  var data = {\n    instance: this,\n    styles: {},\n    arrowStyles: {},\n    attributes: {},\n    flipped: false,\n    offsets: {}\n  };\n\n  \/\/ compute reference element offsets\n  data.offsets.reference = getReferenceOffsets(this.state, this.popper, this.reference);\n\n  \/\/ compute auto placement, store placement inside the data object,\n  \/\/ modifiers will be able to edit `placement` if needed\n  \/\/ and refer to originalPlacement to know the original value\n  data.placement = computeAutoPlacement(this.options.placement, data.offsets.reference, this.popper, this.reference, this.options.modifiers.flip.boundariesElement, this.options.modifiers.flip.padding);\n\n  \/\/ store the computed placement inside `originalPlacement`\n  data.originalPlacement = data.placement;\n\n  \/\/ compute the popper offsets\n  data.offsets.popper = getPopperOffsets(this.popper, data.offsets.reference, data.placement);\n  data.offsets.popper.position = 'absolute';\n\n  \/\/ run the modifiers\n  data = runModifiers(this.modifiers, data);\n\n  \/\/ the first `update` will call `onCreate` callback\n  \/\/ the other ones will call `onUpdate` callback\n  if (!this.state.isCreated) {\n    this.state.isCreated = true;\n    this.options.onCreate(data);\n  } else {\n    this.options.onUpdate(data);\n  }\n}\n\n\/**\n * Helper used to know if the given modifier is enabled.\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean}\n *\/\nfunction isModifierEnabled(modifiers, modifierName) {\n  return modifiers.some(function (_ref) {\n    var name = _ref.name,\n        enabled = _ref.enabled;\n    return enabled && name === modifierName;\n  });\n}\n\n\/**\n * Get the prefixed supported property name\n * @method\n * @memberof Popper.Utils\n * @argument {String} property (camelCase)\n * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)\n *\/\nfunction getSupportedPropertyName(property) {\n  var prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];\n  var upperProp = property.charAt(0).toUpperCase() + property.slice(1);\n\n  for (var i = 0; i < prefixes.length - 1; i++) {\n    var prefix = prefixes[i];\n    var toCheck = prefix ? '' + prefix + upperProp : property;\n    if (typeof window.document.body.style[toCheck] !== 'undefined') {\n      return toCheck;\n    }\n  }\n  return null;\n}\n\n\/**\n * Destroy the popper\n * @method\n * @memberof Popper\n *\/\nfunction destroy() {\n  this.state.isDestroyed = true;\n\n  \/\/ touch DOM only if `applyStyle` modifier is enabled\n  if (isModifierEnabled(this.modifiers, 'applyStyle')) {\n    this.popper.removeAttribute('x-placement');\n    this.popper.style.left = '';\n    this.popper.style.position = '';\n    this.popper.style.top = '';\n    this.popper.style[getSupportedPropertyName('transform')] = '';\n  }\n\n  this.disableEventListeners();\n\n  \/\/ remove the popper if user explicity asked for the deletion on destroy\n  \/\/ do not use `remove` because IE11 doesn't support it\n  if (this.options.removeOnDestroy) {\n    this.popper.parentNode.removeChild(this.popper);\n  }\n  return this;\n}\n\n\/**\n * Get the window associated with the element\n * @argument {Element} element\n * @returns {Window}\n *\/\nfunction getWindow(element) {\n  var ownerDocument = element.ownerDocument;\n  return ownerDocument ? ownerDocument.defaultView : window;\n}\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n  var isBody = scrollParent.nodeName === 'BODY';\n  var target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n  target.addEventListener(event, callback, { passive: true });\n\n  if (!isBody) {\n    attachToScrollParents(getScrollParent(target.parentNode), event, callback, scrollParents);\n  }\n  scrollParents.push(target);\n}\n\n\/**\n * Setup needed event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n *\/\nfunction setupEventListeners(reference, options, state, updateBound) {\n  \/\/ Resize event listener on window\n  state.updateBound = updateBound;\n  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });\n\n  \/\/ Scroll event listener on scroll parents\n  var scrollElement = getScrollParent(reference);\n  attachToScrollParents(scrollElement, 'scroll', state.updateBound, state.scrollParents);\n  state.scrollElement = scrollElement;\n  state.eventsEnabled = true;\n\n  return state;\n}\n\n\/**\n * It will add resize\/scroll events and start recalculating\n * position of the popper element when they are triggered.\n * @method\n * @memberof Popper\n *\/\nfunction enableEventListeners() {\n  if (!this.state.eventsEnabled) {\n    this.state = setupEventListeners(this.reference, this.options, this.state, this.scheduleUpdate);\n  }\n}\n\n\/**\n * Remove event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n *\/\nfunction removeEventListeners(reference, state) {\n  \/\/ Remove resize event listener on window\n  getWindow(reference).removeEventListener('resize', state.updateBound);\n\n  \/\/ Remove scroll event listener on scroll parents\n  state.scrollParents.forEach(function (target) {\n    target.removeEventListener('scroll', state.updateBound);\n  });\n\n  \/\/ Reset state\n  state.updateBound = null;\n  state.scrollParents = [];\n  state.scrollElement = null;\n  state.eventsEnabled = false;\n  return state;\n}\n\n\/**\n * It will remove resize\/scroll events and won't recalculate popper position\n * when they are triggered. It also won't trigger onUpdate callback anymore,\n * unless you call `update` method manually.\n * @method\n * @memberof Popper\n *\/\nfunction disableEventListeners() {\n  if (this.state.eventsEnabled) {\n    window.cancelAnimationFrame(this.scheduleUpdate);\n    this.state = removeEventListeners(this.reference, this.state);\n  }\n}\n\n\/**\n * Tells if a given input is a number\n * @method\n * @memberof Popper.Utils\n * @param {*} input to check\n * @return {Boolean}\n *\/\nfunction isNumeric(n) {\n  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);\n}\n\n\/**\n * Set the style to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the style to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n *\/\nfunction setStyles(element, styles) {\n  Object.keys(styles).forEach(function (prop) {\n    var unit = '';\n    \/\/ add unit if the value is numeric and is one of the following\n    if (['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !== -1 && isNumeric(styles[prop])) {\n      unit = 'px';\n    }\n    element.style[prop] = styles[prop] + unit;\n  });\n}\n\n\/**\n * Set the attributes to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the attributes to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n *\/\nfunction setAttributes(element, attributes) {\n  Object.keys(attributes).forEach(function (prop) {\n    var value = attributes[prop];\n    if (value !== false) {\n      element.setAttribute(prop, attributes[prop]);\n    } else {\n      element.removeAttribute(prop);\n    }\n  });\n}\n\n\/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} data.styles - List of style properties - values to apply to popper element\n * @argument {Object} data.attributes - List of attribute properties - values to apply to popper element\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The same data object\n *\/\nfunction applyStyle(data) {\n  \/\/ any property present in `data.styles` will be applied to the popper,\n  \/\/ in this way we can make the 3rd party modifiers add custom styles to it\n  \/\/ Be aware, modifiers could override the properties defined in the previous\n  \/\/ lines of this modifier!\n  setStyles(data.instance.popper, data.styles);\n\n  \/\/ any property present in `data.attributes` will be applied to the popper,\n  \/\/ they will be set as HTML attributes of the element\n  setAttributes(data.instance.popper, data.attributes);\n\n  \/\/ if arrowElement is defined and arrowStyles has some properties\n  if (data.arrowElement && Object.keys(data.arrowStyles).length) {\n    setStyles(data.arrowElement, data.arrowStyles);\n  }\n\n  return data;\n}\n\n\/**\n * Set the x-placement attribute before everything else because it could be used\n * to add margins to the popper margins needs to be calculated to get the\n * correct popper offsets.\n * @method\n * @memberof Popper.modifiers\n * @param {HTMLElement} reference - The reference element used to position the popper\n * @param {HTMLElement} popper - The HTML element used as popper.\n * @param {Object} options - Popper.js options\n *\/\nfunction applyStyleOnLoad(reference, popper, options, modifierOptions, state) {\n  \/\/ compute reference element offsets\n  var referenceOffsets = getReferenceOffsets(state, popper, reference);\n\n  \/\/ compute auto placement, store placement inside the data object,\n  \/\/ modifiers will be able to edit `placement` if needed\n  \/\/ and refer to originalPlacement to know the original value\n  var placement = computeAutoPlacement(options.placement, referenceOffsets, popper, reference, options.modifiers.flip.boundariesElement, options.modifiers.flip.padding);\n\n  popper.setAttribute('x-placement', placement);\n\n  \/\/ Apply `position` to popper before anything else because\n  \/\/ without the position applied we can't guarantee correct computations\n  setStyles(popper, { position: 'absolute' });\n\n  return options;\n}\n\n\/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n *\/\nfunction computeStyle(data, options) {\n  var x = options.x,\n      y = options.y;\n  var popper = data.offsets.popper;\n\n  \/\/ Remove this legacy support in Popper.js v2\n\n  var legacyGpuAccelerationOption = find(data.instance.modifiers, function (modifier) {\n    return modifier.name === 'applyStyle';\n  }).gpuAcceleration;\n  if (legacyGpuAccelerationOption !== undefined) {\n    console.warn('WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!');\n  }\n  var gpuAcceleration = legacyGpuAccelerationOption !== undefined ? legacyGpuAccelerationOption : options.gpuAcceleration;\n\n  var offsetParent = getOffsetParent(data.instance.popper);\n  var offsetParentRect = getBoundingClientRect(offsetParent);\n\n  \/\/ Styles\n  var styles = {\n    position: popper.position\n  };\n\n  \/\/ floor sides to avoid blurry text\n  var offsets = {\n    left: Math.floor(popper.left),\n    top: Math.floor(popper.top),\n    bottom: Math.floor(popper.bottom),\n    right: Math.floor(popper.right)\n  };\n\n  var sideA = x === 'bottom' ? 'top' : 'bottom';\n  var sideB = y === 'right' ? 'left' : 'right';\n\n  \/\/ if gpuAcceleration is set to `true` and transform is supported,\n  \/\/  we use `translate3d` to apply the position to the popper we\n  \/\/ automatically use the supported prefixed version if needed\n  var prefixedProperty = getSupportedPropertyName('transform');\n\n  \/\/ now, let's make a step back and look at this code closely (wtf?)\n  \/\/ If the content of the popper grows once it's been positioned, it\n  \/\/ may happen that the popper gets misplaced because of the new content\n  \/\/ overflowing its reference element\n  \/\/ To avoid this problem, we provide two options (x and y), which allow\n  \/\/ the consumer to define the offset origin.\n  \/\/ If we position a popper on top of a reference element, we can set\n  \/\/ `x` to `top` to make the popper grow towards its top instead of\n  \/\/ its bottom.\n  var left = void 0,\n      top = void 0;\n  if (sideA === 'bottom') {\n    top = -offsetParentRect.height + offsets.bottom;\n  } else {\n    top = offsets.top;\n  }\n  if (sideB === 'right') {\n    left = -offsetParentRect.width + offsets.right;\n  } else {\n    left = offsets.left;\n  }\n  if (gpuAcceleration && prefixedProperty) {\n    styles[prefixedProperty] = 'translate3d(' + left + 'px, ' + top + 'px, 0)';\n    styles[sideA] = 0;\n    styles[sideB] = 0;\n    styles.willChange = 'transform';\n  } else {\n    \/\/ othwerise, we use the standard `top`, `left`, `bottom` and `right` properties\n    var invertTop = sideA === 'bottom' ? -1 : 1;\n    var invertLeft = sideB === 'right' ? -1 : 1;\n    styles[sideA] = top * invertTop;\n    styles[sideB] = left * invertLeft;\n    styles.willChange = sideA + ', ' + sideB;\n  }\n\n  \/\/ Attributes\n  var attributes = {\n    'x-placement': data.placement\n  };\n\n  \/\/ Update `data` attributes, styles and arrowStyles\n  data.attributes = _extends({}, attributes, data.attributes);\n  data.styles = _extends({}, styles, data.styles);\n  data.arrowStyles = _extends({}, data.offsets.arrow, data.arrowStyles);\n\n  return data;\n}\n\n\/**\n * Helper used to know if the given modifier depends from another one.<br \/>\n * It checks if the needed modifier is listed and enabled.\n * @method\n * @memberof Popper.Utils\n * @param {Array} modifiers - list of modifiers\n * @param {String} requestingName - name of requesting modifier\n * @param {String} requestedName - name of requested modifier\n * @returns {Boolean}\n *\/\nfunction isModifierRequired(modifiers, requestingName, requestedName) {\n  var requesting = find(modifiers, function (_ref) {\n    var name = _ref.name;\n    return name === requestingName;\n  });\n\n  var isRequired = !!requesting && modifiers.some(function (modifier) {\n    return modifier.name === requestedName && modifier.enabled && modifier.order < requesting.order;\n  });\n\n  if (!isRequired) {\n    var _requesting = '`' + requestingName + '`';\n    var requested = '`' + requestedName + '`';\n    console.warn(requested + ' modifier is required by ' + _requesting + ' modifier in order to work, be sure to include it before ' + _requesting + '!');\n  }\n  return isRequired;\n}\n\n\/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n *\/\nfunction arrow(data, options) {\n  \/\/ arrow depends on keepTogether in order to work\n  if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) {\n    return data;\n  }\n\n  var arrowElement = options.element;\n\n  \/\/ if arrowElement is a string, suppose it's a CSS selector\n  if (typeof arrowElement === 'string') {\n    arrowElement = data.instance.popper.querySelector(arrowElement);\n\n    \/\/ if arrowElement is not found, don't run the modifier\n    if (!arrowElement) {\n      return data;\n    }\n  } else {\n    \/\/ if the arrowElement isn't a query selector we must check that the\n    \/\/ provided DOM node is child of its popper node\n    if (!data.instance.popper.contains(arrowElement)) {\n      console.warn('WARNING: `arrow.element` must be child of its popper element!');\n      return data;\n    }\n  }\n\n  var placement = data.placement.split('-')[0];\n  var _data$offsets = data.offsets,\n      popper = _data$offsets.popper,\n      reference = _data$offsets.reference;\n\n  var isVertical = ['left', 'right'].indexOf(placement) !== -1;\n\n  var len = isVertical ? 'height' : 'width';\n  var sideCapitalized = isVertical ? 'Top' : 'Left';\n  var side = sideCapitalized.toLowerCase();\n  var altSide = isVertical ? 'left' : 'top';\n  var opSide = isVertical ? 'bottom' : 'right';\n  var arrowElementSize = getOuterSizes(arrowElement)[len];\n\n  \/\/\n  \/\/ extends keepTogether behavior making sure the popper and its\n  \/\/ reference have enough pixels in conjuction\n  \/\/\n\n  \/\/ top\/left side\n  if (reference[opSide] - arrowElementSize < popper[side]) {\n    data.offsets.popper[side] -= popper[side] - (reference[opSide] - arrowElementSize);\n  }\n  \/\/ bottom\/right side\n  if (reference[side] + arrowElementSize > popper[opSide]) {\n    data.offsets.popper[side] += reference[side] + arrowElementSize - popper[opSide];\n  }\n\n  \/\/ compute center of the popper\n  var center = reference[side] + reference[len] \/ 2 - arrowElementSize \/ 2;\n\n  \/\/ Compute the sideValue using the updated popper offsets\n  \/\/ take popper margin in account because we don't have this info available\n  var popperMarginSide = getStyleComputedProperty(data.instance.popper, 'margin' + sideCapitalized).replace('px', '');\n  var sideValue = center - getClientRect(data.offsets.popper)[side] - popperMarginSide;\n\n  \/\/ prevent arrowElement from being placed not contiguously to its popper\n  sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0);\n\n  data.arrowElement = arrowElement;\n  data.offsets.arrow = {};\n  data.offsets.arrow[side] = Math.round(sideValue);\n  data.offsets.arrow[altSide] = ''; \/\/ make sure to unset any eventual altSide value from the DOM node\n\n  return data;\n}\n\n\/**\n * Get the opposite placement variation of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement variation\n * @returns {String} flipped placement variation\n *\/\nfunction getOppositeVariation(variation) {\n  if (variation === 'end') {\n    return 'start';\n  } else if (variation === 'start') {\n    return 'end';\n  }\n  return variation;\n}\n\n\/**\n * List of accepted placements to use as values of the `placement` option.<br \/>\n * Valid placements are:\n * - `auto`\n * - `top`\n * - `right`\n * - `bottom`\n * - `left`\n *\n * Each placement can have a variation from this list:\n * - `-start`\n * - `-end`\n *\n * Variations are interpreted easily if you think of them as the left to right\n * written languages. Horizontally (`top` and `bottom`), `start` is left and `end`\n * is right.<br \/>\n * Vertically (`left` and `right`), `start` is top and `end` is bottom.\n *\n * Some valid examples are:\n * - `top-end` (on top of reference, right aligned)\n * - `right-start` (on right of reference, top aligned)\n * - `bottom` (on bottom, centered)\n * - `auto-right` (on the side with more space available, alignment depends by placement)\n *\n * @static\n * @type {Array}\n * @enum {String}\n * @readonly\n * @method placements\n * @memberof Popper\n *\/\nvar placements = ['auto-start', 'auto', 'auto-end', 'top-start', 'top', 'top-end', 'right-start', 'right', 'right-end', 'bottom-end', 'bottom', 'bottom-start', 'left-end', 'left', 'left-start'];\n\n\/\/ Get rid of `auto` `auto-start` and `auto-end`\nvar validPlacements = placements.slice(3);\n\n\/**\n * Given an initial placement, returns all the subsequent placements\n * clockwise (or counter-clockwise).\n *\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement - A valid placement (it accepts variations)\n * @argument {Boolean} counter - Set to true to walk the placements counterclockwise\n * @returns {Array} placements including their variations\n *\/\nfunction clockwise(placement) {\n  var counter = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n\n  var index = validPlacements.indexOf(placement);\n  var arr = validPlacements.slice(index + 1).concat(validPlacements.slice(0, index));\n  return counter ? arr.reverse() : arr;\n}\n\nvar BEHAVIORS = {\n  FLIP: 'flip',\n  CLOCKWISE: 'clockwise',\n  COUNTERCLOCKWISE: 'counterclockwise'\n};\n\n\/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n *\/\nfunction flip(data, options) {\n  \/\/ if `inner` modifier is enabled, we can't use the `flip` modifier\n  if (isModifierEnabled(data.instance.modifiers, 'inner')) {\n    return data;\n  }\n\n  if (data.flipped && data.placement === data.originalPlacement) {\n    \/\/ seems like flip is trying to loop, probably there's not enough space on any of the flippable sides\n    return data;\n  }\n\n  var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, options.boundariesElement);\n\n  var placement = data.placement.split('-')[0];\n  var placementOpposite = getOppositePlacement(placement);\n  var variation = data.placement.split('-')[1] || '';\n\n  var flipOrder = [];\n\n  switch (options.behavior) {\n    case BEHAVIORS.FLIP:\n      flipOrder = [placement, placementOpposite];\n      break;\n    case BEHAVIORS.CLOCKWISE:\n      flipOrder = clockwise(placement);\n      break;\n    case BEHAVIORS.COUNTERCLOCKWISE:\n      flipOrder = clockwise(placement, true);\n      break;\n    default:\n      flipOrder = options.behavior;\n  }\n\n  flipOrder.forEach(function (step, index) {\n    if (placement !== step || flipOrder.length === index + 1) {\n      return data;\n    }\n\n    placement = data.placement.split('-')[0];\n    placementOpposite = getOppositePlacement(placement);\n\n    var popperOffsets = data.offsets.popper;\n    var refOffsets = data.offsets.reference;\n\n    \/\/ using floor because the reference offsets may contain decimals we are not going to consider here\n    var floor = Math.floor;\n    var overlapsRef = placement === 'left' && floor(popperOffsets.right) > floor(refOffsets.left) || placement === 'right' && floor(popperOffsets.left) < floor(refOffsets.right) || placement === 'top' && floor(popperOffsets.bottom) > floor(refOffsets.top) || placement === 'bottom' && floor(popperOffsets.top) < floor(refOffsets.bottom);\n\n    var overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left);\n    var overflowsRight = floor(popperOffsets.right) > floor(boundaries.right);\n    var overflowsTop = floor(popperOffsets.top) < floor(boundaries.top);\n    var overflowsBottom = floor(popperOffsets.bottom) > floor(boundaries.bottom);\n\n    var overflowsBoundaries = placement === 'left' && overflowsLeft || placement === 'right' && overflowsRight || placement === 'top' && overflowsTop || placement === 'bottom' && overflowsBottom;\n\n    \/\/ flip the variation if required\n    var isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n    var flippedVariation = !!options.flipVariations && (isVertical && variation === 'start' && overflowsLeft || isVertical && variation === 'end' && overflowsRight || !isVertical && variation === 'start' && overflowsTop || !isVertical && variation === 'end' && overflowsBottom);\n\n    if (overlapsRef || overflowsBoundaries || flippedVariation) {\n      \/\/ this boolean to detect any flip loop\n      data.flipped = true;\n\n      if (overlapsRef || overflowsBoundaries) {\n        placement = flipOrder[index + 1];\n      }\n\n      if (flippedVariation) {\n        variation = getOppositeVariation(variation);\n      }\n\n      data.placement = placement + (variation ? '-' + variation : '');\n\n      \/\/ this object contains `position`, we want to preserve it along with\n      \/\/ any additional property we may add in the future\n      data.offsets.popper = _extends({}, data.offsets.popper, getPopperOffsets(data.instance.popper, data.offsets.reference, data.placement));\n\n      data = runModifiers(data.instance.modifiers, data, 'flip');\n    }\n  });\n  return data;\n}\n\n\/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n *\/\nfunction keepTogether(data) {\n  var _data$offsets = data.offsets,\n      popper = _data$offsets.popper,\n      reference = _data$offsets.reference;\n\n  var placement = data.placement.split('-')[0];\n  var floor = Math.floor;\n  var isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n  var side = isVertical ? 'right' : 'bottom';\n  var opSide = isVertical ? 'left' : 'top';\n  var measurement = isVertical ? 'width' : 'height';\n\n  if (popper[side] < floor(reference[opSide])) {\n    data.offsets.popper[opSide] = floor(reference[opSide]) - popper[measurement];\n  }\n  if (popper[opSide] > floor(reference[side])) {\n    data.offsets.popper[opSide] = floor(reference[side]);\n  }\n\n  return data;\n}\n\n\/**\n * Converts a string containing value + unit into a px value number\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} str - Value + unit string\n * @argument {String} measurement - `height` or `width`\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @returns {Number|String}\n * Value in pixels, or original string if no values were extracted\n *\/\nfunction toValue(str, measurement, popperOffsets, referenceOffsets) {\n  \/\/ separate value from unit\n  var split = str.match(\/((?:\\-|\\+)?\\d*\\.?\\d*)(.*)\/);\n  var value = +split[1];\n  var unit = split[2];\n\n  \/\/ If it's not a number it's an operator, I guess\n  if (!value) {\n    return str;\n  }\n\n  if (unit.indexOf('%') === 0) {\n    var element = void 0;\n    switch (unit) {\n      case '%p':\n        element = popperOffsets;\n        break;\n      case '%':\n      case '%r':\n      default:\n        element = referenceOffsets;\n    }\n\n    var rect = getClientRect(element);\n    return rect[measurement] \/ 100 * value;\n  } else if (unit === 'vh' || unit === 'vw') {\n    \/\/ if is a vh or vw, we calculate the size based on the viewport\n    var size = void 0;\n    if (unit === 'vh') {\n      size = Math.max(document.documentElement.clientHeight, window.innerHeight || 0);\n    } else {\n      size = Math.max(document.documentElement.clientWidth, window.innerWidth || 0);\n    }\n    return size \/ 100 * value;\n  } else {\n    \/\/ if is an explicit pixel unit, we get rid of the unit and keep the value\n    \/\/ if is an implicit unit, it's px, and we return just the value\n    return value;\n  }\n}\n\n\/**\n * Parse an `offset` string to extrapolate `x` and `y` numeric offsets.\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} offset\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @argument {String} basePlacement\n * @returns {Array} a two cells array with x and y offsets in numbers\n *\/\nfunction parseOffset(offset, popperOffsets, referenceOffsets, basePlacement) {\n  var offsets = [0, 0];\n\n  \/\/ Use height if placement is left or right and index is 0 otherwise use width\n  \/\/ in this way the first offset will use an axis and the second one\n  \/\/ will use the other one\n  var useHeight = ['right', 'left'].indexOf(basePlacement) !== -1;\n\n  \/\/ Split the offset string to obtain a list of values and operands\n  \/\/ The regex addresses values with the plus or minus sign in front (+10, -20, etc)\n  var fragments = offset.split(\/(\\+|\\-)\/).map(function (frag) {\n    return frag.trim();\n  });\n\n  \/\/ Detect if the offset string contains a pair of values or a single one\n  \/\/ they could be separated by comma or space\n  var divider = fragments.indexOf(find(fragments, function (frag) {\n    return frag.search(\/,|\\s\/) !== -1;\n  }));\n\n  if (fragments[divider] && fragments[divider].indexOf(',') === -1) {\n    console.warn('Offsets separated by white space(s) are deprecated, use a comma (,) instead.');\n  }\n\n  \/\/ If divider is found, we divide the list of values and operands to divide\n  \/\/ them by ofset X and Y.\n  var splitRegex = \/\\s*,\\s*|\\s+\/;\n  var ops = divider !== -1 ? [fragments.slice(0, divider).concat([fragments[divider].split(splitRegex)[0]]), [fragments[divider].split(splitRegex)[1]].concat(fragments.slice(divider + 1))] : [fragments];\n\n  \/\/ Convert the values with units to absolute pixels to allow our computations\n  ops = ops.map(function (op, index) {\n    \/\/ Most of the units rely on the orientation of the popper\n    var measurement = (index === 1 ? !useHeight : useHeight) ? 'height' : 'width';\n    var mergeWithPrevious = false;\n    return op\n    \/\/ This aggregates any `+` or `-` sign that aren't considered operators\n    \/\/ e.g.: 10 + +5 => [10, +, +5]\n    .reduce(function (a, b) {\n      if (a[a.length - 1] === '' && ['+', '-'].indexOf(b) !== -1) {\n        a[a.length - 1] = b;\n        mergeWithPrevious = true;\n        return a;\n      } else if (mergeWithPrevious) {\n        a[a.length - 1] += b;\n        mergeWithPrevious = false;\n        return a;\n      } else {\n        return a.concat(b);\n      }\n    }, [])\n    \/\/ Here we convert the string values into number values (in px)\n    .map(function (str) {\n      return toValue(str, measurement, popperOffsets, referenceOffsets);\n    });\n  });\n\n  \/\/ Loop trough the offsets arrays and execute the operations\n  ops.forEach(function (op, index) {\n    op.forEach(function (frag, index2) {\n      if (isNumeric(frag)) {\n        offsets[index] += frag * (op[index2 - 1] === '-' ? -1 : 1);\n      }\n    });\n  });\n  return offsets;\n}\n\n\/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @argument {Number|String} options.offset=0\n * The offset value as described in the modifier description\n * @returns {Object} The data object, properly modified\n *\/\nfunction offset(data, _ref) {\n  var offset = _ref.offset;\n  var placement = data.placement,\n      _data$offsets = data.offsets,\n      popper = _data$offsets.popper,\n      reference = _data$offsets.reference;\n\n  var basePlacement = placement.split('-')[0];\n\n  var offsets = void 0;\n  if (isNumeric(+offset)) {\n    offsets = [+offset, 0];\n  } else {\n    offsets = parseOffset(offset, popper, reference, basePlacement);\n  }\n\n  if (basePlacement === 'left') {\n    popper.top += offsets[0];\n    popper.left -= offsets[1];\n  } else if (basePlacement === 'right') {\n    popper.top += offsets[0];\n    popper.left += offsets[1];\n  } else if (basePlacement === 'top') {\n    popper.left += offsets[0];\n    popper.top -= offsets[1];\n  } else if (basePlacement === 'bottom') {\n    popper.left += offsets[0];\n    popper.top += offsets[1];\n  }\n\n  data.popper = popper;\n  return data;\n}\n\n\/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n *\/\nfunction preventOverflow(data, options) {\n  var boundariesElement = options.boundariesElement || getOffsetParent(data.instance.popper);\n\n  \/\/ If offsetParent is the reference element, we really want to\n  \/\/ go one step up and use the next offsetParent as reference to\n  \/\/ avoid to make this modifier completely useless and look like broken\n  if (data.instance.reference === boundariesElement) {\n    boundariesElement = getOffsetParent(boundariesElement);\n  }\n\n  var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, boundariesElement);\n  options.boundaries = boundaries;\n\n  var order = options.priority;\n  var popper = data.offsets.popper;\n\n  var check = {\n    primary: function primary(placement) {\n      var value = popper[placement];\n      if (popper[placement] < boundaries[placement] && !options.escapeWithReference) {\n        value = Math.max(popper[placement], boundaries[placement]);\n      }\n      return defineProperty({}, placement, value);\n    },\n    secondary: function secondary(placement) {\n      var mainSide = placement === 'right' ? 'left' : 'top';\n      var value = popper[mainSide];\n      if (popper[placement] > boundaries[placement] && !options.escapeWithReference) {\n        value = Math.min(popper[mainSide], boundaries[placement] - (placement === 'right' ? popper.width : popper.height));\n      }\n      return defineProperty({}, mainSide, value);\n    }\n  };\n\n  order.forEach(function (placement) {\n    var side = ['left', 'top'].indexOf(placement) !== -1 ? 'primary' : 'secondary';\n    popper = _extends({}, popper, check[side](placement));\n  });\n\n  data.offsets.popper = popper;\n\n  return data;\n}\n\n\/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n *\/\nfunction shift(data) {\n  var placement = data.placement;\n  var basePlacement = placement.split('-')[0];\n  var shiftvariation = placement.split('-')[1];\n\n  \/\/ if shift shiftvariation is specified, run the modifier\n  if (shiftvariation) {\n    var _data$offsets = data.offsets,\n        reference = _data$offsets.reference,\n        popper = _data$offsets.popper;\n\n    var isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;\n    var side = isVertical ? 'left' : 'top';\n    var measurement = isVertical ? 'width' : 'height';\n\n    var shiftOffsets = {\n      start: defineProperty({}, side, reference[side]),\n      end: defineProperty({}, side, reference[side] + reference[measurement] - popper[measurement])\n    };\n\n    data.offsets.popper = _extends({}, popper, shiftOffsets[shiftvariation]);\n  }\n\n  return data;\n}\n\n\/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n *\/\nfunction hide(data) {\n  if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) {\n    return data;\n  }\n\n  var refRect = data.offsets.reference;\n  var bound = find(data.instance.modifiers, function (modifier) {\n    return modifier.name === 'preventOverflow';\n  }).boundaries;\n\n  if (refRect.bottom < bound.top || refRect.left > bound.right || refRect.top > bound.bottom || refRect.right < bound.left) {\n    \/\/ Avoid unnecessary DOM access if visibility hasn't changed\n    if (data.hide === true) {\n      return data;\n    }\n\n    data.hide = true;\n    data.attributes['x-out-of-boundaries'] = '';\n  } else {\n    \/\/ Avoid unnecessary DOM access if visibility hasn't changed\n    if (data.hide === false) {\n      return data;\n    }\n\n    data.hide = false;\n    data.attributes['x-out-of-boundaries'] = false;\n  }\n\n  return data;\n}\n\n\/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n *\/\nfunction inner(data) {\n  var placement = data.placement;\n  var basePlacement = placement.split('-')[0];\n  var _data$offsets = data.offsets,\n      popper = _data$offsets.popper,\n      reference = _data$offsets.reference;\n\n  var isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;\n\n  var subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;\n\n  popper[isHoriz ? 'left' : 'top'] = reference[basePlacement] - (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);\n\n  data.placement = getOppositePlacement(placement);\n  data.offsets.popper = getClientRect(popper);\n\n  return data;\n}\n\n\/**\n * Modifier function, each modifier can have a function of this type assigned\n * to its `fn` property.<br \/>\n * These functions will be called on each update, this means that you must\n * make sure they are performant enough to avoid performance bottlenecks.\n *\n * @function ModifierFn\n * @argument {dataObject} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {dataObject} The data object, properly modified\n *\/\n\n\/**\n * Modifiers are plugins used to alter the behavior of your poppers.<br \/>\n * Popper.js uses a set of 9 modifiers to provide all the basic functionalities\n * needed by the library.\n *\n * Usually you don't want to override the `order`, `fn` and `onLoad` props.\n * All the other properties are configurations that could be tweaked.\n * @namespace modifiers\n *\/\nvar modifiers = {\n  \/**\n   * Modifier used to shift the popper on the start or end of its reference\n   * element.<br \/>\n   * It will read the variation of the `placement` property.<br \/>\n   * It can be one either `-end` or `-start`.\n   * @memberof modifiers\n   * @inner\n   *\/\n  shift: {\n    \/** @prop {number} order=100 - Index used to define the order of execution *\/\n    order: 100,\n    \/** @prop {Boolean} enabled=true - Whether the modifier is enabled or not *\/\n    enabled: true,\n    \/** @prop {ModifierFn} *\/\n    fn: shift\n  },\n\n  \/**\n   * The `offset` modifier can shift your popper on both its axis.\n   *\n   * It accepts the following units:\n   * - `px` or unitless, interpreted as pixels\n   * - `%` or `%r`, percentage relative to the length of the reference element\n   * - `%p`, percentage relative to the length of the popper element\n   * - `vw`, CSS viewport width unit\n   * - `vh`, CSS viewport height unit\n   *\n   * For length is intended the main axis relative to the placement of the popper.<br \/>\n   * This means that if the placement is `top` or `bottom`, the length will be the\n   * `width`. In case of `left` or `right`, it will be the height.\n   *\n   * You can provide a single value (as `Number` or `String`), or a pair of values\n   * as `String` divided by a comma or one (or more) white spaces.<br \/>\n   * The latter is a deprecated method because it leads to confusion and will be\n   * removed in v2.<br \/>\n   * Additionally, it accepts additions and subtractions between different units.\n   * Note that multiplications and divisions aren't supported.\n   *\n   * Valid examples are:\n   * ```\n   * 10\n   * '10%'\n   * '10, 10'\n   * '10%, 10'\n   * '10 + 10%'\n   * '10 - 5vh + 3%'\n   * '-10px + 5vh, 5px - 6%'\n   * ```\n   * > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap\n   * > with their reference element, unfortunately, you will have to disable the `flip` modifier.\n   * > More on this [reading this issue](https:\/\/github.com\/FezVrasta\/popper.js\/issues\/373)\n   *\n   * @memberof modifiers\n   * @inner\n   *\/\n  offset: {\n    \/** @prop {number} order=200 - Index used to define the order of execution *\/\n    order: 200,\n    \/** @prop {Boolean} enabled=true - Whether the modifier is enabled or not *\/\n    enabled: true,\n    \/** @prop {ModifierFn} *\/\n    fn: offset,\n    \/** @prop {Number|String} offset=0\n     * The offset value as described in the modifier description\n     *\/\n    offset: 0\n  },\n\n  \/**\n   * Modifier used to prevent the popper from being positioned outside the boundary.\n   *\n   * An scenario exists where the reference itself is not within the boundaries.<br \/>\n   * We can say it has \"escaped the boundaries\" \u2014 or just \"escaped\".<br \/>\n   * In this case we need to decide whether the popper should either:\n   *\n   * - detach from the reference and remain \"trapped\" in the boundaries, or\n   * - if it should ignore the boundary and \"escape with its reference\"\n   *\n   * When `escapeWithReference` is set to`true` and reference is completely\n   * outside its boundaries, the popper will overflow (or completely leave)\n   * the boundaries in order to remain attached to the edge of the reference.\n   *\n   * @memberof modifiers\n   * @inner\n   *\/\n  preventOverflow: {\n    \/** @prop {number} order=300 - Index used to define the order of execution *\/\n    order: 300,\n    \/** @prop {Boolean} enabled=true - Whether the modifier is enabled or not *\/\n    enabled: true,\n    \/** @prop {ModifierFn} *\/\n    fn: preventOverflow,\n    \/**\n     * @prop {Array} [priority=['left','right','top','bottom']]\n     * Popper will try to prevent overflow following these priorities by default,\n     * then, it could overflow on the left and on top of the `boundariesElement`\n     *\/\n    priority: ['left', 'right', 'top', 'bottom'],\n    \/**\n     * @prop {number} padding=5\n     * Amount of pixel used to define a minimum distance between the boundaries\n     * and the popper this makes sure the popper has always a little padding\n     * between the edges of its container\n     *\/\n    padding: 5,\n    \/**\n     * @prop {String|HTMLElement} boundariesElement='scrollParent'\n     * Boundaries used by the modifier, can be `scrollParent`, `window`,\n     * `viewport` or any DOM element.\n     *\/\n    boundariesElement: 'scrollParent'\n  },\n\n  \/**\n   * Modifier used to make sure the reference and its popper stay near eachothers\n   * without leaving any gap between the two. Expecially useful when the arrow is\n   * enabled and you want to assure it to point to its reference element.\n   * It cares only about the first axis, you can still have poppers with margin\n   * between the popper and its reference element.\n   * @memberof modifiers\n   * @inner\n   *\/\n  keepTogether: {\n    \/** @prop {number} order=400 - Index used to define the order of execution *\/\n    order: 400,\n    \/** @prop {Boolean} enabled=true - Whether the modifier is enabled or not *\/\n    enabled: true,\n    \/** @prop {ModifierFn} *\/\n    fn: keepTogether\n  },\n\n  \/**\n   * This modifier is used to move the `arrowElement` of the popper to make\n   * sure it is positioned between the reference element and its popper element.\n   * It will read the outer size of the `arrowElement` node to detect how many\n   * pixels of conjuction are needed.\n   *\n   * It has no effect if no `arrowElement` is provided.\n   * @memberof modifiers\n   * @inner\n   *\/\n  arrow: {\n    \/** @prop {number} order=500 - Index used to define the order of execution *\/\n    order: 500,\n    \/** @prop {Boolean} enabled=true - Whether the modifier is enabled or not *\/\n    enabled: true,\n    \/** @prop {ModifierFn} *\/\n    fn: arrow,\n    \/** @prop {String|HTMLElement} element='[x-arrow]' - Selector or node used as arrow *\/\n    element: '[x-arrow]'\n  },\n\n  \/**\n   * Modifier used to flip the popper's placement when it starts to overlap its\n   * reference element.\n   *\n   * Requires the `preventOverflow` modifier before it in order to work.\n   *\n   * **NOTE:** this modifier will interrupt the current update cycle and will\n   * restart it if it detects the need to flip the placement.\n   * @memberof modifiers\n   * @inner\n   *\/\n  flip: {\n    \/** @prop {number} order=600 - Index used to define the order of execution *\/\n    order: 600,\n    \/** @prop {Boolean} enabled=true - Whether the modifier is enabled or not *\/\n    enabled: true,\n    \/** @prop {ModifierFn} *\/\n    fn: flip,\n    \/**\n     * @prop {String|Array} behavior='flip'\n     * The behavior used to change the popper's placement. It can be one of\n     * `flip`, `clockwise`, `counterclockwise` or an array with a list of valid\n     * placements (with optional variations).\n     *\/\n    behavior: 'flip',\n    \/**\n     * @prop {number} padding=5\n     * The popper will flip if it hits the edges of the `boundariesElement`\n     *\/\n    padding: 5,\n    \/**\n     * @prop {String|HTMLElement} boundariesElement='viewport'\n     * The element which will define the boundaries of the popper position,\n     * the popper will never be placed outside of the defined boundaries\n     * (except if keepTogether is enabled)\n     *\/\n    boundariesElement: 'viewport'\n  },\n\n  \/**\n   * Modifier used to make the popper flow toward the inner of the reference element.\n   * By default, when this modifier is disabled, the popper will be placed outside\n   * the reference element.\n   * @memberof modifiers\n   * @inner\n   *\/\n  inner: {\n    \/** @prop {number} order=700 - Index used to define the order of execution *\/\n    order: 700,\n    \/** @prop {Boolean} enabled=false - Whether the modifier is enabled or not *\/\n    enabled: false,\n    \/** @prop {ModifierFn} *\/\n    fn: inner\n  },\n\n  \/**\n   * Modifier used to hide the popper when its reference element is outside of the\n   * popper boundaries. It will set a `x-out-of-boundaries` attribute which can\n   * be used to hide with a CSS selector the popper when its reference is\n   * out of boundaries.\n   *\n   * Requires the `preventOverflow` modifier before it in order to work.\n   * @memberof modifiers\n   * @inner\n   *\/\n  hide: {\n    \/** @prop {number} order=800 - Index used to define the order of execution *\/\n    order: 800,\n    \/** @prop {Boolean} enabled=true - Whether the modifier is enabled or not *\/\n    enabled: true,\n    \/** @prop {ModifierFn} *\/\n    fn: hide\n  },\n\n  \/**\n   * Computes the style that will be applied to the popper element to gets\n   * properly positioned.\n   *\n   * Note that this modifier will not touch the DOM, it just prepares the styles\n   * so that `applyStyle` modifier can apply it. This separation is useful\n   * in case you need to replace `applyStyle` with a custom implementation.\n   *\n   * This modifier has `850` as `order` value to maintain backward compatibility\n   * with previous versions of Popper.js. Expect the modifiers ordering method\n   * to change in future major versions of the library.\n   *\n   * @memberof modifiers\n   * @inner\n   *\/\n  computeStyle: {\n    \/** @prop {number} order=850 - Index used to define the order of execution *\/\n    order: 850,\n    \/** @prop {Boolean} enabled=true - Whether the modifier is enabled or not *\/\n    enabled: true,\n    \/** @prop {ModifierFn} *\/\n    fn: computeStyle,\n    \/**\n     * @prop {Boolean} gpuAcceleration=true\n     * If true, it uses the CSS 3d transformation to position the popper.\n     * Otherwise, it will use the `top` and `left` properties.\n     *\/\n    gpuAcceleration: true,\n    \/**\n     * @prop {string} [x='bottom']\n     * Where to anchor the X axis (`bottom` or `top`). AKA X offset origin.\n     * Change this if your popper should grow in a direction different from `bottom`\n     *\/\n    x: 'bottom',\n    \/**\n     * @prop {string} [x='left']\n     * Where to anchor the Y axis (`left` or `right`). AKA Y offset origin.\n     * Change this if your popper should grow in a direction different from `right`\n     *\/\n    y: 'right'\n  },\n\n  \/**\n   * Applies the computed styles to the popper element.\n   *\n   * All the DOM manipulations are limited to this modifier. This is useful in case\n   * you want to integrate Popper.js inside a framework or view library and you\n   * want to delegate all the DOM manipulations to it.\n   *\n   * Note that if you disable this modifier, you must make sure the popper element\n   * has its position set to `absolute` before Popper.js can do its work!\n   *\n   * Just disable this modifier and define you own to achieve the desired effect.\n   *\n   * @memberof modifiers\n   * @inner\n   *\/\n  applyStyle: {\n    \/** @prop {number} order=900 - Index used to define the order of execution *\/\n    order: 900,\n    \/** @prop {Boolean} enabled=true - Whether the modifier is enabled or not *\/\n    enabled: true,\n    \/** @prop {ModifierFn} *\/\n    fn: applyStyle,\n    \/** @prop {Function} *\/\n    onLoad: applyStyleOnLoad,\n    \/**\n     * @deprecated since version 1.10.0, the property moved to `computeStyle` modifier\n     * @prop {Boolean} gpuAcceleration=true\n     * If true, it uses the CSS 3d transformation to position the popper.\n     * Otherwise, it will use the `top` and `left` properties.\n     *\/\n    gpuAcceleration: undefined\n  }\n};\n\n\/**\n * The `dataObject` is an object containing all the informations used by Popper.js\n * this object get passed to modifiers and to the `onCreate` and `onUpdate` callbacks.\n * @name dataObject\n * @property {Object} data.instance The Popper.js instance\n * @property {String} data.placement Placement applied to popper\n * @property {String} data.originalPlacement Placement originally defined on init\n * @property {Boolean} data.flipped True if popper has been flipped by flip modifier\n * @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper.\n * @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier\n * @property {Object} data.styles Any CSS property defined here will be applied to the popper, it expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow, it expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.boundaries Offsets of the popper boundaries\n * @property {Object} data.offsets The measurements of popper, reference and arrow elements.\n * @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0\n *\/\n\n\/**\n * Default options provided to Popper.js constructor.<br \/>\n * These can be overriden using the `options` argument of Popper.js.<br \/>\n * To override an option, simply pass as 3rd argument an object with the same\n * structure of this object, example:\n * ```\n * new Popper(ref, pop, {\n *   modifiers: {\n *     preventOverflow: { enabled: false }\n *   }\n * })\n * ```\n * @type {Object}\n * @static\n * @memberof Popper\n *\/\nvar Defaults = {\n  \/**\n   * Popper's placement\n   * @prop {Popper.placements} placement='bottom'\n   *\/\n  placement: 'bottom',\n\n  \/**\n   * Whether events (resize, scroll) are initially enabled\n   * @prop {Boolean} eventsEnabled=true\n   *\/\n  eventsEnabled: true,\n\n  \/**\n   * Set to true if you want to automatically remove the popper when\n   * you call the `destroy` method.\n   * @prop {Boolean} removeOnDestroy=false\n   *\/\n  removeOnDestroy: false,\n\n  \/**\n   * Callback called when the popper is created.<br \/>\n   * By default, is set to no-op.<br \/>\n   * Access Popper.js instance with `data.instance`.\n   * @prop {onCreate}\n   *\/\n  onCreate: function onCreate() {},\n\n  \/**\n   * Callback called when the popper is updated, this callback is not called\n   * on the initialization\/creation of the popper, but only on subsequent\n   * updates.<br \/>\n   * By default, is set to no-op.<br \/>\n   * Access Popper.js instance with `data.instance`.\n   * @prop {onUpdate}\n   *\/\n  onUpdate: function onUpdate() {},\n\n  \/**\n   * List of modifiers used to modify the offsets before they are applied to the popper.\n   * They provide most of the functionalities of Popper.js\n   * @prop {modifiers}\n   *\/\n  modifiers: modifiers\n};\n\n\/**\n * @callback onCreate\n * @param {dataObject} data\n *\/\n\n\/**\n * @callback onUpdate\n * @param {dataObject} data\n *\/\n\n\/\/ Utils\n\/\/ Methods\nvar Popper = function () {\n  \/**\n   * Create a new Popper.js instance\n   * @class Popper\n   * @param {HTMLElement|referenceObject} reference - The reference element used to position the popper\n   * @param {HTMLElement} popper - The HTML element used as popper.\n   * @param {Object} options - Your custom options to override the ones defined in [Defaults](#defaults)\n   * @return {Object} instance - The generated Popper.js instance\n   *\/\n  function Popper(reference, popper) {\n    var _this = this;\n\n    var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n    classCallCheck(this, Popper);\n\n    this.scheduleUpdate = function () {\n      return requestAnimationFrame(_this.update);\n    };\n\n    \/\/ make update() debounced, so that it only runs at most once-per-tick\n    this.update = debounce(this.update.bind(this));\n\n    \/\/ with {} we create a new object with the options inside it\n    this.options = _extends({}, Popper.Defaults, options);\n\n    \/\/ init state\n    this.state = {\n      isDestroyed: false,\n      isCreated: false,\n      scrollParents: []\n    };\n\n    \/\/ get reference and popper elements (allow jQuery wrappers)\n    this.reference = reference && reference.jquery ? reference[0] : reference;\n    this.popper = popper && popper.jquery ? popper[0] : popper;\n\n    \/\/ Deep merge modifiers options\n    this.options.modifiers = {};\n    Object.keys(_extends({}, Popper.Defaults.modifiers, options.modifiers)).forEach(function (name) {\n      _this.options.modifiers[name] = _extends({}, Popper.Defaults.modifiers[name] || {}, options.modifiers ? options.modifiers[name] : {});\n    });\n\n    \/\/ Refactoring modifiers' list (Object => Array)\n    this.modifiers = Object.keys(this.options.modifiers).map(function (name) {\n      return _extends({\n        name: name\n      }, _this.options.modifiers[name]);\n    })\n    \/\/ sort the modifiers by order\n    .sort(function (a, b) {\n      return a.order - b.order;\n    });\n\n    \/\/ modifiers have the ability to execute arbitrary code when Popper.js get inited\n    \/\/ such code is executed in the same order of its modifier\n    \/\/ they could add new properties to their options configuration\n    \/\/ BE AWARE: don't add options to `options.modifiers.name` but to `modifierOptions`!\n    this.modifiers.forEach(function (modifierOptions) {\n      if (modifierOptions.enabled && isFunction(modifierOptions.onLoad)) {\n        modifierOptions.onLoad(_this.reference, _this.popper, _this.options, modifierOptions, _this.state);\n      }\n    });\n\n    \/\/ fire the first update to position the popper in the right place\n    this.update();\n\n    var eventsEnabled = this.options.eventsEnabled;\n    if (eventsEnabled) {\n      \/\/ setup event listeners, they will take care of update the position in specific situations\n      this.enableEventListeners();\n    }\n\n    this.state.eventsEnabled = eventsEnabled;\n  }\n\n  \/\/ We can't use class properties because they don't get listed in the\n  \/\/ class prototype and break stuff like Sinon stubs\n\n\n  createClass(Popper, [{\n    key: 'update',\n    value: function update$$1() {\n      return update.call(this);\n    }\n  }, {\n    key: 'destroy',\n    value: function destroy$$1() {\n      return destroy.call(this);\n    }\n  }, {\n    key: 'enableEventListeners',\n    value: function enableEventListeners$$1() {\n      return enableEventListeners.call(this);\n    }\n  }, {\n    key: 'disableEventListeners',\n    value: function disableEventListeners$$1() {\n      return disableEventListeners.call(this);\n    }\n\n    \/**\n     * Schedule an update, it will run on the next UI update available\n     * @method scheduleUpdate\n     * @memberof Popper\n     *\/\n\n\n    \/**\n     * Collection of utilities useful when writing custom modifiers.\n     * Starting from version 1.7, this method is available only if you\n     * include `popper-utils.js` before `popper.js`.\n     *\n     * **DEPRECATION**: This way to access PopperUtils is deprecated\n     * and will be removed in v2! Use the PopperUtils module directly instead.\n     * Due to the high instability of the methods contained in Utils, we can't\n     * guarantee them to follow semver. Use them at your own risk!\n     * @static\n     * @private\n     * @type {Object}\n     * @deprecated since version 1.8\n     * @member Utils\n     * @memberof Popper\n     *\/\n\n  }]);\n  return Popper;\n}();\n\n\/**\n * The `referenceObject` is an object that provides an interface compatible with Popper.js\n * and lets you use it as replacement of a real DOM node.<br \/>\n * You can use this method to position a popper relatively to a set of coordinates\n * in case you don't have a DOM node to use as reference.\n *\n * ```\n * new Popper(referenceObject, popperNode);\n * ```\n *\n * NB: This feature isn't supported in Internet Explorer 10\n * @name referenceObject\n * @property {Function} data.getBoundingClientRect\n * A function that returns a set of coordinates compatible with the native `getBoundingClientRect` method.\n * @property {number} data.clientWidth\n * An ES6 getter that will return the width of the virtual reference element.\n * @property {number} data.clientHeight\n * An ES6 getter that will return the height of the virtual reference element.\n *\/\n\n\nPopper.Utils = (typeof window !== 'undefined' ? window : global).PopperUtils;\nPopper.placements = placements;\nPopper.Defaults = Defaults;\n\nreturn Popper;\n\n})));\n\/\/# 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