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✏️ Editing: popper2.js

/**
 * @popperjs/core v2.11.8 - MIT License
 */

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
  typeof define === 'function' && define.amd ? define(['exports'], factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.Popper = {}));
}(this, (function (exports) { 'use strict';

function getWindow(node) {
    if (node == null) {
      return window;
    }

if (node.toString() !== '[object Window]') {
      var ownerDocument = node.ownerDocument;
      return ownerDocument ? ownerDocument.defaultView || window : window;
    }

return node;
  }

function isElement(node) {
    var OwnElement = getWindow(node).Element;
    return node instanceof OwnElement || node instanceof Element;
  }

function isHTMLElement(node) {
    var OwnElement = getWindow(node).HTMLElement;
    return node instanceof OwnElement || node instanceof HTMLElement;
  }

function isShadowRoot(node) {
    // IE 11 has no ShadowRoot
    if (typeof ShadowRoot === 'undefined') {
      return false;
    }

var OwnElement = getWindow(node).ShadowRoot;
    return node instanceof OwnElement || node instanceof ShadowRoot;
  }

var max = Math.max;
  var min = Math.min;
  var round = Math.round;

function getUAString() {
    var uaData = navigator.userAgentData;

if (uaData != null && uaData.brands && Array.isArray(uaData.brands)) {
      return uaData.brands.map(function (item) {
        return item.brand + "/" + item.version;
      }).join(' ');
    }

return navigator.userAgent;
  }

function isLayoutViewport() {
    return !/^((?!chrome|android).)*safari/i.test(getUAString());
  }

function getBoundingClientRect(element, includeScale, isFixedStrategy) {
    if (includeScale === void 0) {
      includeScale = false;
    }

if (isFixedStrategy === void 0) {
      isFixedStrategy = false;
    }

var clientRect = element.getBoundingClientRect();
    var scaleX = 1;
    var scaleY = 1;

if (includeScale && isHTMLElement(element)) {
      scaleX = element.offsetWidth > 0 ? round(clientRect.width) / element.offsetWidth || 1 : 1;
      scaleY = element.offsetHeight > 0 ? round(clientRect.height) / element.offsetHeight || 1 : 1;
    }

var _ref = isElement(element) ? getWindow(element) : window,
        visualViewport = _ref.visualViewport;

var addVisualOffsets = !isLayoutViewport() && isFixedStrategy;
    var x = (clientRect.left + (addVisualOffsets && visualViewport ? visualViewport.offsetLeft : 0)) / scaleX;
    var y = (clientRect.top + (addVisualOffsets && visualViewport ? visualViewport.offsetTop : 0)) / scaleY;
    var width = clientRect.width / scaleX;
    var height = clientRect.height / scaleY;
    return {
      width: width,
      height: height,
      top: y,
      right: x + width,
      bottom: y + height,
      left: x,
      x: x,
      y: y
    };
  }

function getWindowScroll(node) {
    var win = getWindow(node);
    var scrollLeft = win.pageXOffset;
    var scrollTop = win.pageYOffset;
    return {
      scrollLeft: scrollLeft,
      scrollTop: scrollTop
    };
  }

function getHTMLElementScroll(element) {
    return {
      scrollLeft: element.scrollLeft,
      scrollTop: element.scrollTop
    };
  }

function getNodeScroll(node) {
    if (node === getWindow(node) || !isHTMLElement(node)) {
      return getWindowScroll(node);
    } else {
      return getHTMLElementScroll(node);
    }
  }

function getNodeName(element) {
    return element ? (element.nodeName || '').toLowerCase() : null;
  }

function getDocumentElement(element) {
    // $FlowFixMe[incompatible-return]: assume body is always available
    return ((isElement(element) ? element.ownerDocument : // $FlowFixMe[prop-missing]
    element.document) || window.document).documentElement;
  }

function getWindowScrollBarX(element) {
    // If <html> has a CSS width greater than the viewport, then this will be
    // incorrect for RTL.
    // Popper 1 is broken in this case and never had a bug report so let's assume
    // it's not an issue. I don't think anyone ever specifies width on <html>
    // anyway.
    // Browsers where the left scrollbar doesn't cause an issue report `0` for
    // this (e.g. Edge 2019, IE11, Safari)
    return getBoundingClientRect(getDocumentElement(element)).left + getWindowScroll(element).scrollLeft;
  }

function getComputedStyle(element) {
    return getWindow(element).getComputedStyle(element);
  }

function isScrollParent(element) {
    // Firefox wants us to check `-x` and `-y` variations as well
    var _getComputedStyle = getComputedStyle(element),
        overflow = _getComputedStyle.overflow,
        overflowX = _getComputedStyle.overflowX,
        overflowY = _getComputedStyle.overflowY;

return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);
  }

function isElementScaled(element) {
    var rect = element.getBoundingClientRect();
    var scaleX = round(rect.width) / element.offsetWidth || 1;
    var scaleY = round(rect.height) / element.offsetHeight || 1;
    return scaleX !== 1 || scaleY !== 1;
  } // Returns the composite rect of an element relative to its offsetParent.
  // Composite means it takes into account transforms as well as layout.

function getCompositeRect(elementOrVirtualElement, offsetParent, isFixed) {
    if (isFixed === void 0) {
      isFixed = false;
    }

var isOffsetParentAnElement = isHTMLElement(offsetParent);
    var offsetParentIsScaled = isHTMLElement(offsetParent) && isElementScaled(offsetParent);
    var documentElement = getDocumentElement(offsetParent);
    var rect = getBoundingClientRect(elementOrVirtualElement, offsetParentIsScaled, isFixed);
    var scroll = {
      scrollLeft: 0,
      scrollTop: 0
    };
    var offsets = {
      x: 0,
      y: 0
    };

if (isOffsetParentAnElement || !isOffsetParentAnElement && !isFixed) {
      if (getNodeName(offsetParent) !== 'body' || // https://github.com/popperjs/popper-core/issues/1078
      isScrollParent(documentElement)) {
        scroll = getNodeScroll(offsetParent);
      }

if (isHTMLElement(offsetParent)) {
        offsets = getBoundingClientRect(offsetParent, true);
        offsets.x += offsetParent.clientLeft;
        offsets.y += offsetParent.clientTop;
      } else if (documentElement) {
        offsets.x = getWindowScrollBarX(documentElement);
      }
    }

return {
      x: rect.left + scroll.scrollLeft - offsets.x,
      y: rect.top + scroll.scrollTop - offsets.y,
      width: rect.width,
      height: rect.height
    };
  }

// means it doesn't take into account transforms.

function getLayoutRect(element) {
    var clientRect = getBoundingClientRect(element); // Use the clientRect sizes if it's not been transformed.
    // Fixes https://github.com/popperjs/popper-core/issues/1223

var width = element.offsetWidth;
    var height = element.offsetHeight;

if (Math.abs(clientRect.width - width) <= 1) {
      width = clientRect.width;
    }

if (Math.abs(clientRect.height - height) <= 1) {
      height = clientRect.height;
    }

return {
      x: element.offsetLeft,
      y: element.offsetTop,
      width: width,
      height: height
    };
  }

function getParentNode(element) {
    if (getNodeName(element) === 'html') {
      return element;
    }

return (// this is a quicker (but less type safe) way to save quite some bytes from the bundle
      // $FlowFixMe[incompatible-return]
      // $FlowFixMe[prop-missing]
      element.assignedSlot || // step into the shadow DOM of the parent of a slotted node
      element.parentNode || ( // DOM Element detected
      isShadowRoot(element) ? element.host : null) || // ShadowRoot detected
      // $FlowFixMe[incompatible-call]: HTMLElement is a Node
      getDocumentElement(element) // fallback

);
  }

function getScrollParent(node) {
    if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {
      // $FlowFixMe[incompatible-return]: assume body is always available
      return node.ownerDocument.body;
    }

if (isHTMLElement(node) && isScrollParent(node)) {
      return node;
    }

return getScrollParent(getParentNode(node));
  }

/*
  given a DOM element, return the list of all scroll parents, up the list of ancesors
  until we get to the top window object. This list is what we attach scroll listeners
  to, because if any of these parent elements scroll, we'll need to re-calculate the
  reference element's position.
  */

function listScrollParents(element, list) {
    var _element$ownerDocumen;

if (list === void 0) {
      list = [];
    }

var scrollParent = getScrollParent(element);
    var isBody = scrollParent === ((_element$ownerDocumen = element.ownerDocument) == null ? void 0 : _element$ownerDocumen.body);
    var win = getWindow(scrollParent);
    var target = isBody ? [win].concat(win.visualViewport || [], isScrollParent(scrollParent) ? scrollParent : []) : scrollParent;
    var updatedList = list.concat(target);
    return isBody ? updatedList : // $FlowFixMe[incompatible-call]: isBody tells us target will be an HTMLElement here
    updatedList.concat(listScrollParents(getParentNode(target)));
  }

function isTableElement(element) {
    return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;
  }

function getTrueOffsetParent(element) {
    if (!isHTMLElement(element) || // https://github.com/popperjs/popper-core/issues/837
    getComputedStyle(element).position === 'fixed') {
      return null;
    }

return element.offsetParent;
  } // `.offsetParent` reports `null` for fixed elements, while absolute elements
  // return the containing block

function getContainingBlock(element) {
    var isFirefox = /firefox/i.test(getUAString());
    var isIE = /Trident/i.test(getUAString());

if (isIE && isHTMLElement(element)) {
      // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport
      var elementCss = getComputedStyle(element);

if (elementCss.position === 'fixed') {
        return null;
      }
    }

var currentNode = getParentNode(element);

if (isShadowRoot(currentNode)) {
      currentNode = currentNode.host;
    }

while (isHTMLElement(currentNode) && ['html', 'body'].indexOf(getNodeName(currentNode)) < 0) {
      var css = getComputedStyle(currentNode); // This is non-exhaustive but covers the most common CSS properties that
      // create a containing block.
      // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block

if (css.transform !== 'none' || css.perspective !== 'none' || css.contain === 'paint' || ['transform', 'perspective'].indexOf(css.willChange) !== -1 || isFirefox && css.willChange === 'filter' || isFirefox && css.filter && css.filter !== 'none') {
        return currentNode;
      } else {
        currentNode = currentNode.parentNode;
      }
    }

return null;
  } // Gets the closest ancestor positioned element. Handles some edge cases,
  // such as table ancestors and cross browser bugs.

function getOffsetParent(element) {
    var window = getWindow(element);
    var offsetParent = getTrueOffsetParent(element);

while (offsetParent && isTableElement(offsetParent) && getComputedStyle(offsetParent).position === 'static') {
      offsetParent = getTrueOffsetParent(offsetParent);
    }

if (offsetParent && (getNodeName(offsetParent) === 'html' || getNodeName(offsetParent) === 'body' && getComputedStyle(offsetParent).position === 'static')) {
      return window;
    }

return offsetParent || getContainingBlock(element) || window;
  }

var top = 'top';
  var bottom = 'bottom';
  var right = 'right';
  var left = 'left';
  var auto = 'auto';
  var basePlacements = [top, bottom, right, left];
  var start = 'start';
  var end = 'end';
  var clippingParents = 'clippingParents';
  var viewport = 'viewport';
  var popper = 'popper';
  var reference = 'reference';
  var variationPlacements = /*#__PURE__*/basePlacements.reduce(function (acc, placement) {
    return acc.concat([placement + "-" + start, placement + "-" + end]);
  }, []);
  var placements = /*#__PURE__*/[].concat(basePlacements, [auto]).reduce(function (acc, placement) {
    return acc.concat([placement, placement + "-" + start, placement + "-" + end]);
  }, []); // modifiers that need to read the DOM

var beforeRead = 'beforeRead';
  var read = 'read';
  var afterRead = 'afterRead'; // pure-logic modifiers

var beforeMain = 'beforeMain';
  var main = 'main';
  var afterMain = 'afterMain'; // modifier with the purpose to write to the DOM (or write into a framework state)

var beforeWrite = 'beforeWrite';
  var write = 'write';
  var afterWrite = 'afterWrite';
  var modifierPhases = [beforeRead, read, afterRead, beforeMain, main, afterMain, beforeWrite, write, afterWrite];

function order(modifiers) {
    var map = new Map();
    var visited = new Set();
    var result = [];
    modifiers.forEach(function (modifier) {
      map.set(modifier.name, modifier);
    }); // On visiting object, check for its dependencies and visit them recursively

function sort(modifier) {
      visited.add(modifier.name);
      var requires = [].concat(modifier.requires || [], modifier.requiresIfExists || []);
      requires.forEach(function (dep) {
        if (!visited.has(dep)) {
          var depModifier = map.get(dep);

if (depModifier) {
            sort(depModifier);
          }
        }
      });
      result.push(modifier);
    }

modifiers.forEach(function (modifier) {
      if (!visited.has(modifier.name)) {
        // check for visited object
        sort(modifier);
      }
    });
    return result;
  }

function orderModifiers(modifiers) {
    // order based on dependencies
    var orderedModifiers = order(modifiers); // order based on phase

return modifierPhases.reduce(function (acc, phase) {
      return acc.concat(orderedModifiers.filter(function (modifier) {
        return modifier.phase === phase;
      }));
    }, []);
  }

return pending;
    };
  }

return Object.keys(merged).map(function (key) {
      return merged[key];
    });
  }

function getViewportRect(element, strategy) {
    var win = getWindow(element);
    var html = getDocumentElement(element);
    var visualViewport = win.visualViewport;
    var width = html.clientWidth;
    var height = html.clientHeight;
    var x = 0;
    var y = 0;

if (visualViewport) {
      width = visualViewport.width;
      height = visualViewport.height;
      var layoutViewport = isLayoutViewport();

if (layoutViewport || !layoutViewport && strategy === 'fixed') {
        x = visualViewport.offsetLeft;
        y = visualViewport.offsetTop;
      }
    }

return {
      width: width,
      height: height,
      x: x + getWindowScrollBarX(element),
      y: y
    };
  }

// of the `<html>` and `<body>` rect bounds if horizontally scrollable

function getDocumentRect(element) {
    var _element$ownerDocumen;

var html = getDocumentElement(element);
    var winScroll = getWindowScroll(element);
    var body = (_element$ownerDocumen = element.ownerDocument) == null ? void 0 : _element$ownerDocumen.body;
    var width = max(html.scrollWidth, html.clientWidth, body ? body.scrollWidth : 0, body ? body.clientWidth : 0);
    var height = max(html.scrollHeight, html.clientHeight, body ? body.scrollHeight : 0, body ? body.clientHeight : 0);
    var x = -winScroll.scrollLeft + getWindowScrollBarX(element);
    var y = -winScroll.scrollTop;

if (getComputedStyle(body || html).direction === 'rtl') {
      x += max(html.clientWidth, body ? body.clientWidth : 0) - width;
    }

return {
      width: width,
      height: height,
      x: x,
      y: y
    };
  }

function contains(parent, child) {
    var rootNode = child.getRootNode && child.getRootNode(); // First, attempt with faster native method

if (parent.contains(child)) {
      return true;
    } // then fallback to custom implementation with Shadow DOM support
    else if (rootNode && isShadowRoot(rootNode)) {
        var next = child;

do {
          if (next && parent.isSameNode(next)) {
            return true;
          } // $FlowFixMe[prop-missing]: need a better way to handle this...

next = next.parentNode || next.host;
        } while (next);
      } // Give up, the result is false

return false;
  }

function rectToClientRect(rect) {
    return Object.assign({}, rect, {
      left: rect.x,
      top: rect.y,
      right: rect.x + rect.width,
      bottom: rect.y + rect.height
    });
  }

function getInnerBoundingClientRect(element, strategy) {
    var rect = getBoundingClientRect(element, false, strategy === 'fixed');
    rect.top = rect.top + element.clientTop;
    rect.left = rect.left + element.clientLeft;
    rect.bottom = rect.top + element.clientHeight;
    rect.right = rect.left + element.clientWidth;
    rect.width = element.clientWidth;
    rect.height = element.clientHeight;
    rect.x = rect.left;
    rect.y = rect.top;
    return rect;
  }

function getClientRectFromMixedType(element, clippingParent, strategy) {
    return clippingParent === viewport ? rectToClientRect(getViewportRect(element, strategy)) : isElement(clippingParent) ? getInnerBoundingClientRect(clippingParent, strategy) : rectToClientRect(getDocumentRect(getDocumentElement(element)));
  } // A "clipping parent" is an overflowable container with the characteristic of
  // clipping (or hiding) overflowing elements with a position different from
  // `initial`

function getClippingParents(element) {
    var clippingParents = listScrollParents(getParentNode(element));
    var canEscapeClipping = ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;
    var clipperElement = canEscapeClipping && isHTMLElement(element) ? getOffsetParent(element) : element;

if (!isElement(clipperElement)) {
      return [];
    } // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414

return clippingParents.filter(function (clippingParent) {
      return isElement(clippingParent) && contains(clippingParent, clipperElement) && getNodeName(clippingParent) !== 'body';
    });
  } // Gets the maximum area that the element is visible in due to any number of
  // clipping parents

function getClippingRect(element, boundary, rootBoundary, strategy) {
    var mainClippingParents = boundary === 'clippingParents' ? getClippingParents(element) : [].concat(boundary);
    var clippingParents = [].concat(mainClippingParents, [rootBoundary]);
    var firstClippingParent = clippingParents[0];
    var clippingRect = clippingParents.reduce(function (accRect, clippingParent) {
      var rect = getClientRectFromMixedType(element, clippingParent, strategy);
      accRect.top = max(rect.top, accRect.top);
      accRect.right = min(rect.right, accRect.right);
      accRect.bottom = min(rect.bottom, accRect.bottom);
      accRect.left = max(rect.left, accRect.left);
      return accRect;
    }, getClientRectFromMixedType(element, firstClippingParent, strategy));
    clippingRect.width = clippingRect.right - clippingRect.left;
    clippingRect.height = clippingRect.bottom - clippingRect.top;
    clippingRect.x = clippingRect.left;
    clippingRect.y = clippingRect.top;
    return clippingRect;
  }

function getBasePlacement(placement) {
    return placement.split('-')[0];
  }

function getVariation(placement) {
    return placement.split('-')[1];
  }

function getMainAxisFromPlacement(placement) {
    return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';
  }

function computeOffsets(_ref) {
    var reference = _ref.reference,
        element = _ref.element,
        placement = _ref.placement;
    var basePlacement = placement ? getBasePlacement(placement) : null;
    var variation = placement ? getVariation(placement) : null;
    var commonX = reference.x + reference.width / 2 - element.width / 2;
    var commonY = reference.y + reference.height / 2 - element.height / 2;
    var offsets;

switch (basePlacement) {
      case top:
        offsets = {
          x: commonX,
          y: reference.y - element.height
        };
        break;

case bottom:
        offsets = {
          x: commonX,
          y: reference.y + reference.height
        };
        break;

case right:
        offsets = {
          x: reference.x + reference.width,
          y: commonY
        };
        break;

case left:
        offsets = {
          x: reference.x - element.width,
          y: commonY
        };
        break;

default:
        offsets = {
          x: reference.x,
          y: reference.y
        };
    }

var mainAxis = basePlacement ? getMainAxisFromPlacement(basePlacement) : null;

if (mainAxis != null) {
      var len = mainAxis === 'y' ? 'height' : 'width';

switch (variation) {
        case start:
          offsets[mainAxis] = offsets[mainAxis] - (reference[len] / 2 - element[len] / 2);
          break;

case end:
          offsets[mainAxis] = offsets[mainAxis] + (reference[len] / 2 - element[len] / 2);
          break;
      }
    }

return offsets;
  }

function getFreshSideObject() {
    return {
      top: 0,
      right: 0,
      bottom: 0,
      left: 0
    };
  }

function mergePaddingObject(paddingObject) {
    return Object.assign({}, getFreshSideObject(), paddingObject);
  }

function expandToHashMap(value, keys) {
    return keys.reduce(function (hashMap, key) {
      hashMap[key] = value;
      return hashMap;
    }, {});
  }

function detectOverflow(state, options) {
    if (options === void 0) {
      options = {};
    }

var _options = options,
        _options$placement = _options.placement,
        placement = _options$placement === void 0 ? state.placement : _options$placement,
        _options$strategy = _options.strategy,
        strategy = _options$strategy === void 0 ? state.strategy : _options$strategy,
        _options$boundary = _options.boundary,
        boundary = _options$boundary === void 0 ? clippingParents : _options$boundary,
        _options$rootBoundary = _options.rootBoundary,
        rootBoundary = _options$rootBoundary === void 0 ? viewport : _options$rootBoundary,
        _options$elementConte = _options.elementContext,
        elementContext = _options$elementConte === void 0 ? popper : _options$elementConte,
        _options$altBoundary = _options.altBoundary,
        altBoundary = _options$altBoundary === void 0 ? false : _options$altBoundary,
        _options$padding = _options.padding,
        padding = _options$padding === void 0 ? 0 : _options$padding;
    var paddingObject = mergePaddingObject(typeof padding !== 'number' ? padding : expandToHashMap(padding, basePlacements));
    var altContext = elementContext === popper ? reference : popper;
    var popperRect = state.rects.popper;
    var element = state.elements[altBoundary ? altContext : elementContext];
    var clippingClientRect = getClippingRect(isElement(element) ? element : element.contextElement || getDocumentElement(state.elements.popper), boundary, rootBoundary, strategy);
    var referenceClientRect = getBoundingClientRect(state.elements.reference);
    var popperOffsets = computeOffsets({
      reference: referenceClientRect,
      element: popperRect,
      strategy: 'absolute',
      placement: placement
    });
    var popperClientRect = rectToClientRect(Object.assign({}, popperRect, popperOffsets));
    var elementClientRect = elementContext === popper ? popperClientRect : referenceClientRect; // positive = overflowing the clipping rect
    // 0 or negative = within the clipping rect

var overflowOffsets = {
      top: clippingClientRect.top - elementClientRect.top + paddingObject.top,
      bottom: elementClientRect.bottom - clippingClientRect.bottom + paddingObject.bottom,
      left: clippingClientRect.left - elementClientRect.left + paddingObject.left,
      right: elementClientRect.right - clippingClientRect.right + paddingObject.right
    };
    var offsetData = state.modifiersData.offset; // Offsets can be applied only to the popper element

if (elementContext === popper && offsetData) {
      var offset = offsetData[placement];
      Object.keys(overflowOffsets).forEach(function (key) {
        var multiply = [right, bottom].indexOf(key) >= 0 ? 1 : -1;
        var axis = [top, bottom].indexOf(key) >= 0 ? 'y' : 'x';
        overflowOffsets[key] += offset[axis] * multiply;
      });
    }

return overflowOffsets;
  }

var DEFAULT_OPTIONS = {
    placement: 'bottom',
    modifiers: [],
    strategy: 'absolute'
  };

function areValidElements() {
    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

return !args.some(function (element) {
      return !(element && typeof element.getBoundingClientRect === 'function');
    });
  }

function popperGenerator(generatorOptions) {
    if (generatorOptions === void 0) {
      generatorOptions = {};
    }

var _generatorOptions = generatorOptions,
        _generatorOptions$def = _generatorOptions.defaultModifiers,
        defaultModifiers = _generatorOptions$def === void 0 ? [] : _generatorOptions$def,
        _generatorOptions$def2 = _generatorOptions.defaultOptions,
        defaultOptions = _generatorOptions$def2 === void 0 ? DEFAULT_OPTIONS : _generatorOptions$def2;
    return function createPopper(reference, popper, options) {
      if (options === void 0) {
        options = defaultOptions;
      }

var orderedModifiers = orderModifiers(mergeByName([].concat(defaultModifiers, state.options.modifiers))); // Strip out disabled modifiers

state.orderedModifiers = orderedModifiers.filter(function (m) {
            return m.enabled;
          });
          runModifierEffects();
          return instance.update();
        },
        // Sync update – it will always be executed, even if not necessary. This
        // is useful for low frequency updates where sync behavior simplifies the
        // logic.
        // For high frequency updates (e.g. `resize` and `scroll` events), always
        // prefer the async Popper#update method
        forceUpdate: function forceUpdate() {
          if (isDestroyed) {
            return;
          }

var _state$elements = state.elements,
              reference = _state$elements.reference,
              popper = _state$elements.popper; // Don't proceed if `reference` or `popper` are not valid elements
          // anymore

if (!areValidElements(reference, popper)) {
            return;
          } // Store the reference and popper rects to be read by modifiers

state.rects = {
            reference: getCompositeRect(reference, getOffsetParent(popper), state.options.strategy === 'fixed'),
            popper: getLayoutRect(popper)
          }; // Modifiers have the ability to reset the current update cycle. The
          // most common use case for this is the `flip` modifier changing the
          // placement, which then needs to re-run all the modifiers, because the
          // logic was previously ran for the previous placement and is therefore
          // stale/incorrect

state.reset = false;
          state.placement = state.options.placement; // On each update cycle, the `modifiersData` property for each modifier
          // is filled with the initial data specified by the modifier. This means
          // it doesn't persist and is fresh on each update.
          // To ensure persistent data, use `${name}#persistent`

state.orderedModifiers.forEach(function (modifier) {
            return state.modifiersData[modifier.name] = Object.assign({}, modifier.data);
          });

for (var index = 0; index < state.orderedModifiers.length; index++) {
            if (state.reset === true) {
              state.reset = false;
              index = -1;
              continue;
            }

var _state$orderedModifie = state.orderedModifiers[index],
                fn = _state$orderedModifie.fn,
                _state$orderedModifie2 = _state$orderedModifie.options,
                _options = _state$orderedModifie2 === void 0 ? {} : _state$orderedModifie2,
                name = _state$orderedModifie.name;

if (typeof fn === 'function') {
              state = fn({
                state: state,
                options: _options,
                name: name,
                instance: instance
              }) || state;
            }
          }
        },
        // Async and optimistically optimized update – it will not be executed if
        // not necessary (debounced to run at most once-per-tick)
        update: debounce(function () {
          return new Promise(function (resolve) {
            instance.forceUpdate();
            resolve(state);
          });
        }),
        destroy: function destroy() {
          cleanupModifierEffects();
          isDestroyed = true;
        }
      };

if (!areValidElements(reference, popper)) {
        return instance;
      }

instance.setOptions(options).then(function (state) {
        if (!isDestroyed && options.onFirstUpdate) {
          options.onFirstUpdate(state);
        }
      }); // Modifiers have the ability to execute arbitrary code before the first
      // update cycle runs. They will be executed in the same order as the update
      // cycle. This is useful when a modifier adds some persistent data that
      // other modifiers need to use, but the modifier is run after the dependent
      // one.

function runModifierEffects() {
        state.orderedModifiers.forEach(function (_ref) {
          var name = _ref.name,
              _ref$options = _ref.options,
              options = _ref$options === void 0 ? {} : _ref$options,
              effect = _ref.effect;

if (typeof effect === 'function') {
            var cleanupFn = effect({
              state: state,
              name: name,
              instance: instance,
              options: options
            });

var noopFn = function noopFn() {};

effectCleanupFns.push(cleanupFn || noopFn);
          }
        });
      }

function cleanupModifierEffects() {
        effectCleanupFns.forEach(function (fn) {
          return fn();
        });
        effectCleanupFns = [];
      }

return instance;
    };
  }

var passive = {
    passive: true
  };

function effect$2(_ref) {
    var state = _ref.state,
        instance = _ref.instance,
        options = _ref.options;
    var _options$scroll = options.scroll,
        scroll = _options$scroll === void 0 ? true : _options$scroll,
        _options$resize = options.resize,
        resize = _options$resize === void 0 ? true : _options$resize;
    var window = getWindow(state.elements.popper);
    var scrollParents = [].concat(state.scrollParents.reference, state.scrollParents.popper);

if (scroll) {
      scrollParents.forEach(function (scrollParent) {
        scrollParent.addEventListener('scroll', instance.update, passive);
      });
    }

if (resize) {
      window.addEventListener('resize', instance.update, passive);
    }

return function () {
      if (scroll) {
        scrollParents.forEach(function (scrollParent) {
          scrollParent.removeEventListener('scroll', instance.update, passive);
        });
      }

if (resize) {
        window.removeEventListener('resize', instance.update, passive);
      }
    };
  } // eslint-disable-next-line import/no-unused-modules

var eventListeners = {
    name: 'eventListeners',
    enabled: true,
    phase: 'write',
    fn: function fn() {},
    effect: effect$2,
    data: {}
  };

function popperOffsets(_ref) {
    var state = _ref.state,
        name = _ref.name;
    // Offsets are the actual position the popper needs to have to be
    // properly positioned near its reference element
    // This is the most basic placement, and will be adjusted by
    // the modifiers in the next step
    state.modifiersData[name] = computeOffsets({
      reference: state.rects.reference,
      element: state.rects.popper,
      strategy: 'absolute',
      placement: state.placement
    });
  } // eslint-disable-next-line import/no-unused-modules

var popperOffsets$1 = {
    name: 'popperOffsets',
    enabled: true,
    phase: 'read',
    fn: popperOffsets,
    data: {}
  };

var unsetSides = {
    top: 'auto',
    right: 'auto',
    bottom: 'auto',
    left: 'auto'
  }; // Round the offsets to the nearest suitable subpixel based on the DPR.
  // Zooming can change the DPR, but it seems to report a value that will
  // cleanly divide the values into the appropriate subpixels.

function roundOffsetsByDPR(_ref, win) {
    var x = _ref.x,
        y = _ref.y;
    var dpr = win.devicePixelRatio || 1;
    return {
      x: round(x * dpr) / dpr || 0,
      y: round(y * dpr) / dpr || 0
    };
  }

function mapToStyles(_ref2) {
    var _Object$assign2;

var popper = _ref2.popper,
        popperRect = _ref2.popperRect,
        placement = _ref2.placement,
        variation = _ref2.variation,
        offsets = _ref2.offsets,
        position = _ref2.position,
        gpuAcceleration = _ref2.gpuAcceleration,
        adaptive = _ref2.adaptive,
        roundOffsets = _ref2.roundOffsets,
        isFixed = _ref2.isFixed;
    var _offsets$x = offsets.x,
        x = _offsets$x === void 0 ? 0 : _offsets$x,
        _offsets$y = offsets.y,
        y = _offsets$y === void 0 ? 0 : _offsets$y;

var _ref3 = typeof roundOffsets === 'function' ? roundOffsets({
      x: x,
      y: y
    }) : {
      x: x,
      y: y
    };

x = _ref3.x;
    y = _ref3.y;
    var hasX = offsets.hasOwnProperty('x');
    var hasY = offsets.hasOwnProperty('y');
    var sideX = left;
    var sideY = top;
    var win = window;

if (adaptive) {
      var offsetParent = getOffsetParent(popper);
      var heightProp = 'clientHeight';
      var widthProp = 'clientWidth';

if (offsetParent === getWindow(popper)) {
        offsetParent = getDocumentElement(popper);

if (getComputedStyle(offsetParent).position !== 'static' && position === 'absolute') {
          heightProp = 'scrollHeight';
          widthProp = 'scrollWidth';
        }
      } // $FlowFixMe[incompatible-cast]: force type refinement, we compare offsetParent with window above, but Flow doesn't detect it

offsetParent = offsetParent;

if (placement === top || (placement === left || placement === right) && variation === end) {
        sideY = bottom;
        var offsetY = isFixed && offsetParent === win && win.visualViewport ? win.visualViewport.height : // $FlowFixMe[prop-missing]
        offsetParent[heightProp];
        y -= offsetY - popperRect.height;
        y *= gpuAcceleration ? 1 : -1;
      }

if (placement === left || (placement === top || placement === bottom) && variation === end) {
        sideX = right;
        var offsetX = isFixed && offsetParent === win && win.visualViewport ? win.visualViewport.width : // $FlowFixMe[prop-missing]
        offsetParent[widthProp];
        x -= offsetX - popperRect.width;
        x *= gpuAcceleration ? 1 : -1;
      }
    }

var commonStyles = Object.assign({
      position: position
    }, adaptive && unsetSides);

var _ref4 = roundOffsets === true ? roundOffsetsByDPR({
      x: x,
      y: y
    }, getWindow(popper)) : {
      x: x,
      y: y
    };

x = _ref4.x;
    y = _ref4.y;

if (gpuAcceleration) {
      var _Object$assign;

return Object.assign({}, commonStyles, (_Object$assign = {}, _Object$assign[sideY] = hasY ? '0' : '', _Object$assign[sideX] = hasX ? '0' : '', _Object$assign.transform = (win.devicePixelRatio || 1) <= 1 ? "translate(" + x + "px, " + y + "px)" : "translate3d(" + x + "px, " + y + "px, 0)", _Object$assign));
    }

return Object.assign({}, commonStyles, (_Object$assign2 = {}, _Object$assign2[sideY] = hasY ? y + "px" : '', _Object$assign2[sideX] = hasX ? x + "px" : '', _Object$assign2.transform = '', _Object$assign2));
  }

function computeStyles(_ref5) {
    var state = _ref5.state,
        options = _ref5.options;
    var _options$gpuAccelerat = options.gpuAcceleration,
        gpuAcceleration = _options$gpuAccelerat === void 0 ? true : _options$gpuAccelerat,
        _options$adaptive = options.adaptive,
        adaptive = _options$adaptive === void 0 ? true : _options$adaptive,
        _options$roundOffsets = options.roundOffsets,
        roundOffsets = _options$roundOffsets === void 0 ? true : _options$roundOffsets;
    var commonStyles = {
      placement: getBasePlacement(state.placement),
      variation: getVariation(state.placement),
      popper: state.elements.popper,
      popperRect: state.rects.popper,
      gpuAcceleration: gpuAcceleration,
      isFixed: state.options.strategy === 'fixed'
    };

if (state.modifiersData.popperOffsets != null) {
      state.styles.popper = Object.assign({}, state.styles.popper, mapToStyles(Object.assign({}, commonStyles, {
        offsets: state.modifiersData.popperOffsets,
        position: state.options.strategy,
        adaptive: adaptive,
        roundOffsets: roundOffsets
      })));
    }

if (state.modifiersData.arrow != null) {
      state.styles.arrow = Object.assign({}, state.styles.arrow, mapToStyles(Object.assign({}, commonStyles, {
        offsets: state.modifiersData.arrow,
        position: 'absolute',
        adaptive: false,
        roundOffsets: roundOffsets
      })));
    }

state.attributes.popper = Object.assign({}, state.attributes.popper, {
      'data-popper-placement': state.placement
    });
  } // eslint-disable-next-line import/no-unused-modules

var computeStyles$1 = {
    name: 'computeStyles',
    enabled: true,
    phase: 'beforeWrite',
    fn: computeStyles,
    data: {}
  };

// and applies them to the HTMLElements such as popper and arrow

function applyStyles(_ref) {
    var state = _ref.state;
    Object.keys(state.elements).forEach(function (name) {
      var style = state.styles[name] || {};
      var attributes = state.attributes[name] || {};
      var element = state.elements[name]; // arrow is optional + virtual elements

if (!isHTMLElement(element) || !getNodeName(element)) {
        return;
      } // Flow doesn't support to extend this property, but it's the most
      // effective way to apply styles to an HTMLElement
      // $FlowFixMe[cannot-write]

Object.assign(element.style, style);
      Object.keys(attributes).forEach(function (name) {
        var value = attributes[name];

if (value === false) {
          element.removeAttribute(name);
        } else {
          element.setAttribute(name, value === true ? '' : value);
        }
      });
    });
  }

if (state.elements.arrow) {
      Object.assign(state.elements.arrow.style, initialStyles.arrow);
    }

return function () {
      Object.keys(state.elements).forEach(function (name) {
        var element = state.elements[name];
        var attributes = state.attributes[name] || {};
        var styleProperties = Object.keys(state.styles.hasOwnProperty(name) ? state.styles[name] : initialStyles[name]); // Set all values to an empty string to unset them

var style = styleProperties.reduce(function (style, property) {
          style[property] = '';
          return style;
        }, {}); // arrow is optional + virtual elements

if (!isHTMLElement(element) || !getNodeName(element)) {
          return;
        }

Object.assign(element.style, style);
        Object.keys(attributes).forEach(function (attribute) {
          element.removeAttribute(attribute);
        });
      });
    };
  } // eslint-disable-next-line import/no-unused-modules

var applyStyles$1 = {
    name: 'applyStyles',
    enabled: true,
    phase: 'write',
    fn: applyStyles,
    effect: effect$1,
    requires: ['computeStyles']
  };

function distanceAndSkiddingToXY(placement, rects, offset) {
    var basePlacement = getBasePlacement(placement);
    var invertDistance = [left, top].indexOf(basePlacement) >= 0 ? -1 : 1;

var _ref = typeof offset === 'function' ? offset(Object.assign({}, rects, {
      placement: placement
    })) : offset,
        skidding = _ref[0],
        distance = _ref[1];

skidding = skidding || 0;
    distance = (distance || 0) * invertDistance;
    return [left, right].indexOf(basePlacement) >= 0 ? {
      x: distance,
      y: skidding
    } : {
      x: skidding,
      y: distance
    };
  }

function offset(_ref2) {
    var state = _ref2.state,
        options = _ref2.options,
        name = _ref2.name;
    var _options$offset = options.offset,
        offset = _options$offset === void 0 ? [0, 0] : _options$offset;
    var data = placements.reduce(function (acc, placement) {
      acc[placement] = distanceAndSkiddingToXY(placement, state.rects, offset);
      return acc;
    }, {});
    var _data$state$placement = data[state.placement],
        x = _data$state$placement.x,
        y = _data$state$placement.y;

if (state.modifiersData.popperOffsets != null) {
      state.modifiersData.popperOffsets.x += x;
      state.modifiersData.popperOffsets.y += y;
    }

state.modifiersData[name] = data;
  } // eslint-disable-next-line import/no-unused-modules

var offset$1 = {
    name: 'offset',
    enabled: true,
    phase: 'main',
    requires: ['popperOffsets'],
    fn: offset
  };

function computeAutoPlacement(state, options) {
    if (options === void 0) {
      options = {};
    }

var _options = options,
        placement = _options.placement,
        boundary = _options.boundary,
        rootBoundary = _options.rootBoundary,
        padding = _options.padding,
        flipVariations = _options.flipVariations,
        _options$allowedAutoP = _options.allowedAutoPlacements,
        allowedAutoPlacements = _options$allowedAutoP === void 0 ? placements : _options$allowedAutoP;
    var variation = getVariation(placement);
    var placements$1 = variation ? flipVariations ? variationPlacements : variationPlacements.filter(function (placement) {
      return getVariation(placement) === variation;
    }) : basePlacements;
    var allowedPlacements = placements$1.filter(function (placement) {
      return allowedAutoPlacements.indexOf(placement) >= 0;
    });

if (allowedPlacements.length === 0) {
      allowedPlacements = placements$1;
    } // $FlowFixMe[incompatible-type]: Flow seems to have problems with two array unions...

function getExpandedFallbackPlacements(placement) {
    if (getBasePlacement(placement) === auto) {
      return [];
    }

var oppositePlacement = getOppositePlacement(placement);
    return [getOppositeVariationPlacement(placement), oppositePlacement, getOppositeVariationPlacement(oppositePlacement)];
  }

function flip(_ref) {
    var state = _ref.state,
        options = _ref.options,
        name = _ref.name;

if (state.modifiersData[name]._skip) {
      return;
    }

var _options$mainAxis = options.mainAxis,
        checkMainAxis = _options$mainAxis === void 0 ? true : _options$mainAxis,
        _options$altAxis = options.altAxis,
        checkAltAxis = _options$altAxis === void 0 ? true : _options$altAxis,
        specifiedFallbackPlacements = options.fallbackPlacements,
        padding = options.padding,
        boundary = options.boundary,
        rootBoundary = options.rootBoundary,
        altBoundary = options.altBoundary,
        _options$flipVariatio = options.flipVariations,
        flipVariations = _options$flipVariatio === void 0 ? true : _options$flipVariatio,
        allowedAutoPlacements = options.allowedAutoPlacements;
    var preferredPlacement = state.options.placement;
    var basePlacement = getBasePlacement(preferredPlacement);
    var isBasePlacement = basePlacement === preferredPlacement;
    var fallbackPlacements = specifiedFallbackPlacements || (isBasePlacement || !flipVariations ? [getOppositePlacement(preferredPlacement)] : getExpandedFallbackPlacements(preferredPlacement));
    var placements = [preferredPlacement].concat(fallbackPlacements).reduce(function (acc, placement) {
      return acc.concat(getBasePlacement(placement) === auto ? computeAutoPlacement(state, {
        placement: placement,
        boundary: boundary,
        rootBoundary: rootBoundary,
        padding: padding,
        flipVariations: flipVariations,
        allowedAutoPlacements: allowedAutoPlacements
      }) : placement);
    }, []);
    var referenceRect = state.rects.reference;
    var popperRect = state.rects.popper;
    var checksMap = new Map();
    var makeFallbackChecks = true;
    var firstFittingPlacement = placements[0];

for (var i = 0; i < placements.length; i++) {
      var placement = placements[i];

var _basePlacement = getBasePlacement(placement);

var isStartVariation = getVariation(placement) === start;
      var isVertical = [top, bottom].indexOf(_basePlacement) >= 0;
      var len = isVertical ? 'width' : 'height';
      var overflow = detectOverflow(state, {
        placement: placement,
        boundary: boundary,
        rootBoundary: rootBoundary,
        altBoundary: altBoundary,
        padding: padding
      });
      var mainVariationSide = isVertical ? isStartVariation ? right : left : isStartVariation ? bottom : top;

if (referenceRect[len] > popperRect[len]) {
        mainVariationSide = getOppositePlacement(mainVariationSide);
      }

var altVariationSide = getOppositePlacement(mainVariationSide);
      var checks = [];

if (checkMainAxis) {
        checks.push(overflow[_basePlacement] <= 0);
      }

if (checkAltAxis) {
        checks.push(overflow[mainVariationSide] <= 0, overflow[altVariationSide] <= 0);
      }

if (checks.every(function (check) {
        return check;
      })) {
        firstFittingPlacement = placement;
        makeFallbackChecks = false;
        break;
      }

checksMap.set(placement, checks);
    }

if (makeFallbackChecks) {
      // `2` may be desired in some cases – research later
      var numberOfChecks = flipVariations ? 3 : 1;

var _loop = function _loop(_i) {
        var fittingPlacement = placements.find(function (placement) {
          var checks = checksMap.get(placement);

if (checks) {
            return checks.slice(0, _i).every(function (check) {
              return check;
            });
          }
        });

if (fittingPlacement) {
          firstFittingPlacement = fittingPlacement;
          return "break";
        }
      };

for (var _i = numberOfChecks; _i > 0; _i--) {
        var _ret = _loop(_i);

if (_ret === "break") break;
      }
    }

if (state.placement !== firstFittingPlacement) {
      state.modifiersData[name]._skip = true;
      state.placement = firstFittingPlacement;
      state.reset = true;
    }
  } // eslint-disable-next-line import/no-unused-modules

var flip$1 = {
    name: 'flip',
    enabled: true,
    phase: 'main',
    fn: flip,
    requiresIfExists: ['offset'],
    data: {
      _skip: false
    }
  };

function getAltAxis(axis) {
    return axis === 'x' ? 'y' : 'x';
  }

function within(min$1, value, max$1) {
    return max(min$1, min(value, max$1));
  }
  function withinMaxClamp(min, value, max) {
    var v = within(min, value, max);
    return v > max ? max : v;
  }

if (!popperOffsets) {
      return;
    }

if (checkMainAxis) {
      var _offsetModifierState$;

var mainSide = mainAxis === 'y' ? top : left;
      var altSide = mainAxis === 'y' ? bottom : right;
      var len = mainAxis === 'y' ? 'height' : 'width';
      var offset = popperOffsets[mainAxis];
      var min$1 = offset + overflow[mainSide];
      var max$1 = offset - overflow[altSide];
      var additive = tether ? -popperRect[len] / 2 : 0;
      var minLen = variation === start ? referenceRect[len] : popperRect[len];
      var maxLen = variation === start ? -popperRect[len] : -referenceRect[len]; // We need to include the arrow in the calculation so the arrow doesn't go
      // outside the reference bounds

var arrowElement = state.elements.arrow;
      var arrowRect = tether && arrowElement ? getLayoutRect(arrowElement) : {
        width: 0,
        height: 0
      };
      var arrowPaddingObject = state.modifiersData['arrow#persistent'] ? state.modifiersData['arrow#persistent'].padding : getFreshSideObject();
      var arrowPaddingMin = arrowPaddingObject[mainSide];
      var arrowPaddingMax = arrowPaddingObject[altSide]; // If the reference length is smaller than the arrow length, we don't want
      // to include its full size in the calculation. If the reference is small
      // and near the edge of a boundary, the popper can overflow even if the
      // reference is not overflowing as well (e.g. virtual elements with no
      // width or height)

var arrowLen = within(0, referenceRect[len], arrowRect[len]);
      var minOffset = isBasePlacement ? referenceRect[len] / 2 - additive - arrowLen - arrowPaddingMin - normalizedTetherOffsetValue.mainAxis : minLen - arrowLen - arrowPaddingMin - normalizedTetherOffsetValue.mainAxis;
      var maxOffset = isBasePlacement ? -referenceRect[len] / 2 + additive + arrowLen + arrowPaddingMax + normalizedTetherOffsetValue.mainAxis : maxLen + arrowLen + arrowPaddingMax + normalizedTetherOffsetValue.mainAxis;
      var arrowOffsetParent = state.elements.arrow && getOffsetParent(state.elements.arrow);
      var clientOffset = arrowOffsetParent ? mainAxis === 'y' ? arrowOffsetParent.clientTop || 0 : arrowOffsetParent.clientLeft || 0 : 0;
      var offsetModifierValue = (_offsetModifierState$ = offsetModifierState == null ? void 0 : offsetModifierState[mainAxis]) != null ? _offsetModifierState$ : 0;
      var tetherMin = offset + minOffset - offsetModifierValue - clientOffset;
      var tetherMax = offset + maxOffset - offsetModifierValue;
      var preventedOffset = within(tether ? min(min$1, tetherMin) : min$1, offset, tether ? max(max$1, tetherMax) : max$1);
      popperOffsets[mainAxis] = preventedOffset;
      data[mainAxis] = preventedOffset - offset;
    }

if (checkAltAxis) {
      var _offsetModifierState$2;

var _mainSide = mainAxis === 'x' ? top : left;

var _altSide = mainAxis === 'x' ? bottom : right;

var _offset = popperOffsets[altAxis];

var _len = altAxis === 'y' ? 'height' : 'width';

var _min = _offset + overflow[_mainSide];

var _max = _offset - overflow[_altSide];

var isOriginSide = [top, left].indexOf(basePlacement) !== -1;

var _offsetModifierValue = (_offsetModifierState$2 = offsetModifierState == null ? void 0 : offsetModifierState[altAxis]) != null ? _offsetModifierState$2 : 0;

var _tetherMin = isOriginSide ? _min : _offset - referenceRect[_len] - popperRect[_len] - _offsetModifierValue + normalizedTetherOffsetValue.altAxis;

var _tetherMax = isOriginSide ? _offset + referenceRect[_len] + popperRect[_len] - _offsetModifierValue - normalizedTetherOffsetValue.altAxis : _max;

var _preventedOffset = tether && isOriginSide ? withinMaxClamp(_tetherMin, _offset, _tetherMax) : within(tether ? _tetherMin : _min, _offset, tether ? _tetherMax : _max);

popperOffsets[altAxis] = _preventedOffset;
      data[altAxis] = _preventedOffset - _offset;
    }

state.modifiersData[name] = data;
  } // eslint-disable-next-line import/no-unused-modules

var preventOverflow$1 = {
    name: 'preventOverflow',
    enabled: true,
    phase: 'main',
    fn: preventOverflow,
    requiresIfExists: ['offset']
  };

function arrow(_ref) {
    var _state$modifiersData$;

var state = _ref.state,
        name = _ref.name,
        options = _ref.options;
    var arrowElement = state.elements.arrow;
    var popperOffsets = state.modifiersData.popperOffsets;
    var basePlacement = getBasePlacement(state.placement);
    var axis = getMainAxisFromPlacement(basePlacement);
    var isVertical = [left, right].indexOf(basePlacement) >= 0;
    var len = isVertical ? 'height' : 'width';

if (!arrowElement || !popperOffsets) {
      return;
    }

var paddingObject = toPaddingObject(options.padding, state);
    var arrowRect = getLayoutRect(arrowElement);
    var minProp = axis === 'y' ? top : left;
    var maxProp = axis === 'y' ? bottom : right;
    var endDiff = state.rects.reference[len] + state.rects.reference[axis] - popperOffsets[axis] - state.rects.popper[len];
    var startDiff = popperOffsets[axis] - state.rects.reference[axis];
    var arrowOffsetParent = getOffsetParent(arrowElement);
    var clientSize = arrowOffsetParent ? axis === 'y' ? arrowOffsetParent.clientHeight || 0 : arrowOffsetParent.clientWidth || 0 : 0;
    var centerToReference = endDiff / 2 - startDiff / 2; // Make sure the arrow doesn't overflow the popper if the center point is
    // outside of the popper bounds

var min = paddingObject[minProp];
    var max = clientSize - arrowRect[len] - paddingObject[maxProp];
    var center = clientSize / 2 - arrowRect[len] / 2 + centerToReference;
    var offset = within(min, center, max); // Prevents breaking syntax highlighting...

var axisProp = axis;
    state.modifiersData[name] = (_state$modifiersData$ = {}, _state$modifiersData$[axisProp] = offset, _state$modifiersData$.centerOffset = offset - center, _state$modifiersData$);
  }

function effect(_ref2) {
    var state = _ref2.state,
        options = _ref2.options;
    var _options$element = options.element,
        arrowElement = _options$element === void 0 ? '[data-popper-arrow]' : _options$element;

if (arrowElement == null) {
      return;
    } // CSS selector

if (typeof arrowElement === 'string') {
      arrowElement = state.elements.popper.querySelector(arrowElement);

if (!arrowElement) {
        return;
      }
    }

if (!contains(state.elements.popper, arrowElement)) {
      return;
    }

state.elements.arrow = arrowElement;
  } // eslint-disable-next-line import/no-unused-modules

var arrow$1 = {
    name: 'arrow',
    enabled: true,
    phase: 'main',
    fn: arrow,
    effect: effect,
    requires: ['popperOffsets'],
    requiresIfExists: ['preventOverflow']
  };

function getSideOffsets(overflow, rect, preventedOffsets) {
    if (preventedOffsets === void 0) {
      preventedOffsets = {
        x: 0,
        y: 0
      };
    }

return {
      top: overflow.top - rect.height - preventedOffsets.y,
      right: overflow.right - rect.width + preventedOffsets.x,
      bottom: overflow.bottom - rect.height + preventedOffsets.y,
      left: overflow.left - rect.width - preventedOffsets.x
    };
  }

function isAnySideFullyClipped(overflow) {
    return [top, right, bottom, left].some(function (side) {
      return overflow[side] >= 0;
    });
  }

var hide$1 = {
    name: 'hide',
    enabled: true,
    phase: 'main',
    requiresIfExists: ['preventOverflow'],
    fn: hide
  };

var defaultModifiers$1 = [eventListeners, popperOffsets$1, computeStyles$1, applyStyles$1];
  var createPopper$1 = /*#__PURE__*/popperGenerator({
    defaultModifiers: defaultModifiers$1
  }); // eslint-disable-next-line import/no-unused-modules

var defaultModifiers = [eventListeners, popperOffsets$1, computeStyles$1, applyStyles$1, offset$1, flip$1, preventOverflow$1, arrow$1, hide$1];
  var createPopper = /*#__PURE__*/popperGenerator({
    defaultModifiers: defaultModifiers
  }); // eslint-disable-next-line import/no-unused-modules

exports.applyStyles = applyStyles$1;
  exports.arrow = arrow$1;
  exports.computeStyles = computeStyles$1;
  exports.createPopper = createPopper;
  exports.createPopperLite = createPopper$1;
  exports.defaultModifiers = defaultModifiers;
  exports.detectOverflow = detectOverflow;
  exports.eventListeners = eventListeners;
  exports.flip = flip$1;
  exports.hide = hide$1;
  exports.offset = offset$1;
  exports.popperGenerator = popperGenerator;
  exports.popperOffsets = popperOffsets$1;
  exports.preventOverflow = preventOverflow$1;

Object.defineProperty(exports, '__esModule', { value: true });

})));
//# sourceMappingURL=popper2.js.map

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