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@popperjs/core/dist/umd/popper.js

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1/**
* @popperjs/core v2.11.5 - MIT License
*/
4
5(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 = {}));
9}(this, (function (exports) { 'use strict';
10
function getWindow(node) {
  if (node == null) {
    return window;
  }
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  if (node.toString() !== '[object Window]') {
    var ownerDocument = node.ownerDocument;
    return ownerDocument ? ownerDocument.defaultView || window : window;
  }
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  return node;
}
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function isElement(node) {
  var OwnElement = getWindow(node).Element;
  return node instanceof OwnElement || node instanceof Element;
}
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function isHTMLElement(node) {
  var OwnElement = getWindow(node).HTMLElement;
  return node instanceof OwnElement || node instanceof HTMLElement;
}
33
function isShadowRoot(node) {
  // IE 11 has no ShadowRoot
  if (typeof ShadowRoot === 'undefined') {
    return false;
  }
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  var OwnElement = getWindow(node).ShadowRoot;
  return node instanceof OwnElement || node instanceof ShadowRoot;
}
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var max = Math.max;
var min = Math.min;
var round = Math.round;
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function getBoundingClientRect(element, includeScale) {
  if (includeScale === void 0) {
    includeScale = false;
  }
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  var rect = element.getBoundingClientRect();
  var scaleX = 1;
  var scaleY = 1;
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  if (isHTMLElement(element) && includeScale) {
    var offsetHeight = element.offsetHeight;
    var offsetWidth = element.offsetWidth; // Do not attempt to divide by 0, otherwise we get `Infinity` as scale
    // Fallback to 1 in case both values are `0`
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    if (offsetWidth > 0) {
      scaleX = round(rect.width) / offsetWidth || 1;
    }
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    if (offsetHeight > 0) {
      scaleY = round(rect.height) / offsetHeight || 1;
    }
  }
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  return {
    width: rect.width / scaleX,
    height: rect.height / scaleY,
    top: rect.top / scaleY,
    right: rect.right / scaleX,
    bottom: rect.bottom / scaleY,
    left: rect.left / scaleX,
    x: rect.left / scaleX,
    y: rect.top / scaleY
  };
}
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function getWindowScroll(node) {
  var win = getWindow(node);
  var scrollLeft = win.pageXOffset;
  var scrollTop = win.pageYOffset;
  return {
    scrollLeft: scrollLeft,
    scrollTop: scrollTop
  };
}
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function getHTMLElementScroll(element) {
  return {
    scrollLeft: element.scrollLeft,
    scrollTop: element.scrollTop
  };
}
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function getNodeScroll(node) {
  if (node === getWindow(node) || !isHTMLElement(node)) {
    return getWindowScroll(node);
  } else {
    return getHTMLElementScroll(node);
  }
}
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function getNodeName(element) {
  return element ? (element.nodeName || '').toLowerCase() : null;
}
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function getDocumentElement(element) {
  // $FlowFixMe[incompatible-return]: assume body is always available
  return ((isElement(element) ? element.ownerDocument : // $FlowFixMe[prop-missing]
  element.document) || window.document).documentElement;
}
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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;
}
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function getComputedStyle(element) {
  return getWindow(element).getComputedStyle(element);
}
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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;
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  return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);
}
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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.
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function getCompositeRect(elementOrVirtualElement, offsetParent, isFixed) {
  if (isFixed === void 0) {
    isFixed = false;
  }
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  var isOffsetParentAnElement = isHTMLElement(offsetParent);
  var offsetParentIsScaled = isHTMLElement(offsetParent) && isElementScaled(offsetParent);
  var documentElement = getDocumentElement(offsetParent);
  var rect = getBoundingClientRect(elementOrVirtualElement, offsetParentIsScaled);
  var scroll = {
    scrollLeft: 0,
    scrollTop: 0
  };
  var offsets = {
    x: 0,
    y: 0
  };
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  if (isOffsetParentAnElement || !isOffsetParentAnElement && !isFixed) {
    if (getNodeName(offsetParent) !== 'body' || // https://github.com/popperjs/popper-core/issues/1078
    isScrollParent(documentElement)) {
      scroll = getNodeScroll(offsetParent);
    }
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    if (isHTMLElement(offsetParent)) {
      offsets = getBoundingClientRect(offsetParent, true);
      offsets.x += offsetParent.clientLeft;
      offsets.y += offsetParent.clientTop;
    } else if (documentElement) {
      offsets.x = getWindowScrollBarX(documentElement);
    }
  }
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  return {
    x: rect.left + scroll.scrollLeft - offsets.x,
    y: rect.top + scroll.scrollTop - offsets.y,
    width: rect.width,
    height: rect.height
  };
}
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// means it doesn't take into account transforms.
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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
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  var width = element.offsetWidth;
  var height = element.offsetHeight;
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  if (Math.abs(clientRect.width - width) <= 1) {
    width = clientRect.width;
  }
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  if (Math.abs(clientRect.height - height) <= 1) {
    height = clientRect.height;
  }
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  return {
    x: element.offsetLeft,
    y: element.offsetTop,
    width: width,
    height: height
  };
}
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function getParentNode(element) {
  if (getNodeName(element) === 'html') {
    return element;
  }
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  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
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  );
}
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function getScrollParent(node) {
  if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {
    // $FlowFixMe[incompatible-return]: assume body is always available
    return node.ownerDocument.body;
  }
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  if (isHTMLElement(node) && isScrollParent(node)) {
    return node;
  }
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  return getScrollParent(getParentNode(node));
}
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/*
given a DOM element, return the list of all scroll parents, up the list of ancesors
until we get to the top window object. This list is what we attach scroll listeners
to, because if any of these parent elements scroll, we'll need to re-calculate the
reference element's position.
*/
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function listScrollParents(element, list) {
  var _element$ownerDocumen;
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  if (list === void 0) {
    list = [];
  }
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  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)));
}
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function isTableElement(element) {
  return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;
}
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function getTrueOffsetParent(element) {
  if (!isHTMLElement(element) || // https://github.com/popperjs/popper-core/issues/837
  getComputedStyle(element).position === 'fixed') {
    return null;
  }
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  return element.offsetParent;
} // `.offsetParent` reports `null` for fixed elements, while absolute elements
// return the containing block
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function getContainingBlock(element) {
  var isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') !== -1;
  var isIE = navigator.userAgent.indexOf('Trident') !== -1;
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  if (isIE && isHTMLElement(element)) {
    // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport
    var elementCss = getComputedStyle(element);
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    if (elementCss.position === 'fixed') {
      return null;
    }
  }
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  var currentNode = getParentNode(element);
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  if (isShadowRoot(currentNode)) {
    currentNode = currentNode.host;
  }
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  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
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    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;
    }
  }
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  return null;
} // Gets the closest ancestor positioned element. Handles some edge cases,
// such as table ancestors and cross browser bugs.
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function getOffsetParent(element) {
  var window = getWindow(element);
  var offsetParent = getTrueOffsetParent(element);
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  while (offsetParent && isTableElement(offsetParent) && getComputedStyle(offsetParent).position === 'static') {
    offsetParent = getTrueOffsetParent(offsetParent);
  }
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  if (offsetParent && (getNodeName(offsetParent) === 'html' || getNodeName(offsetParent) === 'body' && getComputedStyle(offsetParent).position === 'static')) {
    return window;
  }
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  return offsetParent || getContainingBlock(element) || window;
}
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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
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var beforeRead = 'beforeRead';
var read = 'read';
var afterRead = 'afterRead'; // pure-logic modifiers
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var beforeMain = 'beforeMain';
var main = 'main';
var afterMain = 'afterMain'; // modifier with the purpose to write to the DOM (or write into a framework state)
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var beforeWrite = 'beforeWrite';
var write = 'write';
var afterWrite = 'afterWrite';
var modifierPhases = [beforeRead, read, afterRead, beforeMain, main, afterMain, beforeWrite, write, afterWrite];
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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
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  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);
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        if (depModifier) {
          sort(depModifier);
        }
      }
    });
    result.push(modifier);
  }
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  modifiers.forEach(function (modifier) {
    if (!visited.has(modifier.name)) {
      // check for visited object
      sort(modifier);
    }
  });
  return result;
}
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function orderModifiers(modifiers) {
  // order based on dependencies
  var orderedModifiers = order(modifiers); // order based on phase
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  return modifierPhases.reduce(function (acc, phase) {
    return acc.concat(orderedModifiers.filter(function (modifier) {
      return modifier.phase === phase;
    }));
  }, []);
}
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function debounce(fn) {
  var pending;
  return function () {
    if (!pending) {
      pending = new Promise(function (resolve) {
        Promise.resolve().then(function () {
          pending = undefined;
          resolve(fn());
        });
      });
    }
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    return pending;
  };
}
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function format(str) {
  for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
    args[_key - 1] = arguments[_key];
  }
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  return [].concat(args).reduce(function (p, c) {
    return p.replace(/%s/, c);
  }, str);
}
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var INVALID_MODIFIER_ERROR = 'Popper: modifier "%s" provided an invalid %s property, expected %s but got %s';
var MISSING_DEPENDENCY_ERROR = 'Popper: modifier "%s" requires "%s", but "%s" modifier is not available';
var VALID_PROPERTIES = ['name', 'enabled', 'phase', 'fn', 'effect', 'requires', 'options'];
function validateModifiers(modifiers) {
  modifiers.forEach(function (modifier) {
    [].concat(Object.keys(modifier), VALID_PROPERTIES) // IE11-compatible replacement for `new Set(iterable)`
    .filter(function (value, index, self) {
      return self.indexOf(value) === index;
    }).forEach(function (key) {
      switch (key) {
        case 'name':
          if (typeof modifier.name !== 'string') {
            console.error(format(INVALID_MODIFIER_ERROR, String(modifier.name), '"name"', '"string"', "\"" + String(modifier.name) + "\""));
          }
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          break;
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        case 'enabled':
          if (typeof modifier.enabled !== 'boolean') {
            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"enabled"', '"boolean"', "\"" + String(modifier.enabled) + "\""));
          }
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          break;
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        case 'phase':
          if (modifierPhases.indexOf(modifier.phase) < 0) {
            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"phase"', "either " + modifierPhases.join(', '), "\"" + String(modifier.phase) + "\""));
          }
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          break;
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        case 'fn':
          if (typeof modifier.fn !== 'function') {
            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"fn"', '"function"', "\"" + String(modifier.fn) + "\""));
          }
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          break;
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        case 'effect':
          if (modifier.effect != null && typeof modifier.effect !== 'function') {
            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"effect"', '"function"', "\"" + String(modifier.fn) + "\""));
          }
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          break;
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        case 'requires':
          if (modifier.requires != null && !Array.isArray(modifier.requires)) {
            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"requires"', '"array"', "\"" + String(modifier.requires) + "\""));
          }
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          break;
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        case 'requiresIfExists':
          if (!Array.isArray(modifier.requiresIfExists)) {
            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"requiresIfExists"', '"array"', "\"" + String(modifier.requiresIfExists) + "\""));
          }
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          break;
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        case 'options':
        case 'data':
          break;
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        default:
          console.error("PopperJS: an invalid property has been provided to the \"" + modifier.name + "\" modifier, valid properties are " + VALID_PROPERTIES.map(function (s) {
            return "\"" + s + "\"";
          }).join(', ') + "; but \"" + key + "\" was provided.");
      }
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      modifier.requires && modifier.requires.forEach(function (requirement) {
        if (modifiers.find(function (mod) {
          return mod.name === requirement;
        }) == null) {
          console.error(format(MISSING_DEPENDENCY_ERROR, String(modifier.name), requirement, requirement));
        }
      });
    });
  });
}
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function uniqueBy(arr, fn) {
  var identifiers = new Set();
  return arr.filter(function (item) {
    var identifier = fn(item);
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    if (!identifiers.has(identifier)) {
      identifiers.add(identifier);
      return true;
    }
  });
}
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function getBasePlacement(placement) {
  return placement.split('-')[0];
}
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function mergeByName(modifiers) {
  var merged = modifiers.reduce(function (merged, current) {
    var existing = merged[current.name];
    merged[current.name] = existing ? Object.assign({}, existing, current, {
      options: Object.assign({}, existing.options, current.options),
      data: Object.assign({}, existing.data, current.data)
    }) : current;
    return merged;
  }, {}); // IE11 does not support Object.values
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  return Object.keys(merged).map(function (key) {
    return merged[key];
  });
}
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function getViewportRect(element) {
  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; // NB: This isn't supported on iOS <= 12. If the keyboard is open, the popper
  // can be obscured underneath it.
  // Also, `html.clientHeight` adds the bottom bar height in Safari iOS, even
  // if it isn't open, so if this isn't available, the popper will be detected
  // to overflow the bottom of the screen too early.
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  if (visualViewport) {
    width = visualViewport.width;
    height = visualViewport.height; // Uses Layout Viewport (like Chrome; Safari does not currently)
    // In Chrome, it returns a value very close to 0 (+/-) but contains rounding
    // errors due to floating point numbers, so we need to check precision.
    // Safari returns a number <= 0, usually < -1 when pinch-zoomed
    // Feature detection fails in mobile emulation mode in Chrome.
    // Math.abs(win.innerWidth / visualViewport.scale - visualViewport.width) <
    // 0.001
    // Fallback here: "Not Safari" userAgent
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    if (!/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {
      x = visualViewport.offsetLeft;
      y = visualViewport.offsetTop;
    }
  }
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  return {
    width: width,
    height: height,
    x: x + getWindowScrollBarX(element),
    y: y
  };
}
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// of the `<html>` and `<body>` rect bounds if horizontally scrollable
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function getDocumentRect(element) {
  var _element$ownerDocumen;
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  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;
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  if (getComputedStyle(body || html).direction === 'rtl') {
    x += max(html.clientWidth, body ? body.clientWidth : 0) - width;
  }
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  return {
    width: width,
    height: height,
    x: x,
    y: y
  };
}
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function contains(parent, child) {
  var rootNode = child.getRootNode && child.getRootNode(); // First, attempt with faster native method
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  if (parent.contains(child)) {
    return true;
  } // then fallback to custom implementation with Shadow DOM support
  else if (rootNode && isShadowRoot(rootNode)) {
      var next = child;
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      do {
        if (next && parent.isSameNode(next)) {
          return true;
        } // $FlowFixMe[prop-missing]: need a better way to handle this...
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        next = next.parentNode || next.host;
      } while (next);
    } // Give up, the result is false
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  return false;
}
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function rectToClientRect(rect) {
  return Object.assign({}, rect, {
    left: rect.x,
    top: rect.y,
    right: rect.x + rect.width,
    bottom: rect.y + rect.height
  });
}
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function getInnerBoundingClientRect(element) {
  var rect = getBoundingClientRect(element);
  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;
}
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function getClientRectFromMixedType(element, clippingParent) {
  return clippingParent === viewport ? rectToClientRect(getViewportRect(element)) : isElement(clippingParent) ? getInnerBoundingClientRect(clippingParent) : 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`
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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;
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  if (!isElement(clipperElement)) {
    return [];
  } // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414
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  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
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function getClippingRect(element, boundary, rootBoundary) {
  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);
    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));
  clippingRect.width = clippingRect.right - clippingRect.left;
  clippingRect.height = clippingRect.bottom - clippingRect.top;
  clippingRect.x = clippingRect.left;
  clippingRect.y = clippingRect.top;
  return clippingRect;
}
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function getVariation(placement) {
  return placement.split('-')[1];
}
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function getMainAxisFromPlacement(placement) {
  return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';
}
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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;
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  switch (basePlacement) {
    case top:
      offsets = {
        x: commonX,
        y: reference.y - element.height
      };
      break;
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    case bottom:
      offsets = {
        x: commonX,
        y: reference.y + reference.height
      };
      break;
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    case right:
      offsets = {
        x: reference.x + reference.width,
        y: commonY
      };
      break;
739
    case left:
      offsets = {
        x: reference.x - element.width,
        y: commonY
      };
      break;
746
    default:
      offsets = {
        x: reference.x,
        y: reference.y
      };
  }
753
  var mainAxis = basePlacement ? getMainAxisFromPlacement(basePlacement) : null;
755
  if (mainAxis != null) {
    var len = mainAxis === 'y' ? 'height' : 'width';
758
    switch (variation) {
      case start:
        offsets[mainAxis] = offsets[mainAxis] - (reference[len] / 2 - element[len] / 2);
        break;
763
      case end:
        offsets[mainAxis] = offsets[mainAxis] + (reference[len] / 2 - element[len] / 2);
        break;
    }
  }
769
  return offsets;
}
772
function getFreshSideObject() {
  return {
    top: 0,
    right: 0,
    bottom: 0,
    left: 0
  };
}
781
function mergePaddingObject(paddingObject) {
  return Object.assign({}, getFreshSideObject(), paddingObject);
}
785
function expandToHashMap(value, keys) {
  return keys.reduce(function (hashMap, key) {
    hashMap[key] = value;
    return hashMap;
  }, {});
}
792
function detectOverflow(state, options) {
  if (options === void 0) {
    options = {};
  }
797
  var _options = options,
      _options$placement = _options.placement,
      placement = _options$placement === void 0 ? state.placement : _options$placement,
      _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);
  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
826
  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
834
  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;
    });
  }
843
  return overflowOffsets;
}
846
var INVALID_ELEMENT_ERROR = 'Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.';
var INFINITE_LOOP_ERROR = 'Popper: An infinite loop in the modifiers cycle has been detected! The cycle has been interrupted to prevent a browser crash.';
var DEFAULT_OPTIONS = {
  placement: 'bottom',
  modifiers: [],
  strategy: 'absolute'
};
854
function areValidElements() {
  for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
    args[_key] = arguments[_key];
  }
859
  return !args.some(function (element) {
    return !(element && typeof element.getBoundingClientRect === 'function');
  });
}
864
function popperGenerator(generatorOptions) {
  if (generatorOptions === void 0) {
    generatorOptions = {};
  }
869
  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;
    }
879
    var state = {
      placement: 'bottom',
      orderedModifiers: [],
      options: Object.assign({}, DEFAULT_OPTIONS, defaultOptions),
      modifiersData: {},
      elements: {
        reference: reference,
        popper: popper
      },
      attributes: {},
      styles: {}
    };
    var effectCleanupFns = [];
    var isDestroyed = false;
    var instance = {
      state: state,
      setOptions: function setOptions(setOptionsAction) {
        var options = typeof setOptionsAction === 'function' ? setOptionsAction(state.options) : setOptionsAction;
        cleanupModifierEffects();
        state.options = Object.assign({}, defaultOptions, state.options, options);
        state.scrollParents = {
          reference: isElement(reference) ? listScrollParents(reference) : reference.contextElement ? listScrollParents(reference.contextElement) : [],
          popper: listScrollParents(popper)
        }; // Orders the modifiers based on their dependencies and `phase`
        // properties
905
        var orderedModifiers = orderModifiers(mergeByName([].concat(defaultModifiers, state.options.modifiers))); // Strip out disabled modifiers
907
        state.orderedModifiers = orderedModifiers.filter(function (m) {
          return m.enabled;
        }); // Validate the provided modifiers so that the consumer will get warned
        // if one of the modifiers is invalid for any reason
912
        {
          var modifiers = uniqueBy([].concat(orderedModifiers, state.options.modifiers), function (_ref) {
            var name = _ref.name;
            return name;
          });
          validateModifiers(modifiers);
919
          if (getBasePlacement(state.options.placement) === auto) {
            var flipModifier = state.orderedModifiers.find(function (_ref2) {
              var name = _ref2.name;
              return name === 'flip';
            });
925
            if (!flipModifier) {
              console.error(['Popper: "auto" placements require the "flip" modifier be', 'present and enabled to work.'].join(' '));
            }
          }
930
          var _getComputedStyle = getComputedStyle(popper),
              marginTop = _getComputedStyle.marginTop,
              marginRight = _getComputedStyle.marginRight,
              marginBottom = _getComputedStyle.marginBottom,
              marginLeft = _getComputedStyle.marginLeft; // We no longer take into account `margins` on the popper, and it can
          // cause bugs with positioning, so we'll warn the consumer
937
938
          if ([marginTop, marginRight, marginBottom, marginLeft].some(function (margin) {
            return parseFloat(margin);
          })) {
            console.warn(['Popper: CSS "margin" styles cannot be used to apply padding', 'between the popper and its reference element or boundary.', 'To replicate margin, use the `offset` modifier, as well as', 'the `padding` option in the `preventOverflow` and `flip`', 'modifiers.'].join(' '));
          }
        }
945
        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;
        }
958
        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
963
        if (!areValidElements(reference, popper)) {
          {
            console.error(INVALID_ELEMENT_ERROR);
          }
968
          return;
        } // Store the reference and popper rects to be read by modifiers
971
972
        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
981
        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 `${name}#persistent`
987
        state.orderedModifiers.forEach(function (modifier) {
          return state.modifiersData[modifier.name] = Object.assign({}, modifier.data);
        });
        var __debug_loops__ = 0;
992
        for (var index = 0; index < state.orderedModifiers.length; index++) {
          {
            __debug_loops__ += 1;
996
            if (__debug_loops__ > 100) {
              console.error(INFINITE_LOOP_ERROR);
              break;
            }
          }
1002
          if (state.reset === true) {
            state.reset = false;
            index = -1;
            continue;
          }
1008
          var _state$orderedModifie = state.orderedModifiers[index],
              fn = _state$orderedModifie.fn,
              _state$orderedModifie2 = _state$orderedModifie.options,
              _options = _state$orderedModifie2 === void 0 ? {} : _state$orderedModifie2,
              name = _state$orderedModifie.name;
1014
          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;
      }
    };
1038
    if (!areValidElements(reference, popper)) {
      {
        console.error(INVALID_ELEMENT_ERROR);
      }
1043
      return instance;
    }
1046
    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.
1056
    function runModifierEffects() {
      state.orderedModifiers.forEach(function (_ref3) {
        var name = _ref3.name,
            _ref3$options = _ref3.options,
            options = _ref3$options === void 0 ? {} : _ref3$options,
            effect = _ref3.effect;
1063
        if (typeof effect === 'function') {
          var cleanupFn = effect({
            state: state,
            name: name,
            instance: instance,
            options: options
          });
1071
          var noopFn = function noopFn() {};
1073
          effectCleanupFns.push(cleanupFn || noopFn);
        }
      });
    }
1078
    function cleanupModifierEffects() {
      effectCleanupFns.forEach(function (fn) {
        return fn();
      });
      effectCleanupFns = [];
    }
1085
    return instance;
  };
}
1089
var passive = {
  passive: true
};
1093
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);
1104
  if (scroll) {
    scrollParents.forEach(function (scrollParent) {
      scrollParent.addEventListener('scroll', instance.update, passive);
    });
  }
1110
  if (resize) {
    window.addEventListener('resize', instance.update, passive);
  }
1114
  return function () {
    if (scroll) {
      scrollParents.forEach(function (scrollParent) {
        scrollParent.removeEventListener('scroll', instance.update, passive);
      });
    }
1121
    if (resize) {
      window.removeEventListener('resize', instance.update, passive);
    }
  };
} // eslint-disable-next-line import/no-unused-modules
1127
1128
var eventListeners = {
  name: 'eventListeners',
  enabled: true,
  phase: 'write',
  fn: function fn() {},
  effect: effect$2,
  data: {}
};
1137
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
1152
1153
var popperOffsets$1 = {
  name: 'popperOffsets',
  enabled: true,
  phase: 'read',
  fn: popperOffsets,
  data: {}
};
1161
var unsetSides = {
  top: 'auto',
  right: 'auto',
  bottom: 'auto',
  left: 'auto'
}; // Round the offsets to the nearest suitable subpixel based on the DPR.
// Zooming can change the DPR, but it seems to report a value that will
// cleanly divide the values into the appropriate subpixels.
1170
function roundOffsetsByDPR(_ref) {
  var x = _ref.x,
      y = _ref.y;
  var win = window;
  var dpr = win.devicePixelRatio || 1;
  return {
    x: round(x * dpr) / dpr || 0,
    y: round(y * dpr) / dpr || 0
  };
}
1181
function mapToStyles(_ref2) {
  var _Object$assign2;
1184
  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;
1199
  var _ref3 = typeof roundOffsets === 'function' ? roundOffsets({
    x: x,
    y: y
  }) : {
    x: x,
    y: y
  };
1207
  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;
1215
  if (adaptive) {
    var offsetParent = getOffsetParent(popper);
    var heightProp = 'clientHeight';
    var widthProp = 'clientWidth';
1220
    if (offsetParent === getWindow(popper)) {
      offsetParent = getDocumentElement(popper);
1223
      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
1229
1230
    offsetParent = offsetParent;
1232
    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;
    }
1240
    if (placement === left || (placement === top || placement === bottom) && variation === end) {
      sideX = right;
      var offsetX = isFixed && offsetParent === win && win.visualViewport ? win.visualViewport.width : // $FlowFixMe[prop-missing]
      offsetParent[widthProp];
      x -= offsetX - popperRect.width;
      x *= gpuAcceleration ? 1 : -1;
    }
  }
1249
  var commonStyles = Object.assign({
    position: position
  }, adaptive && unsetSides);
1253
  var _ref4 = roundOffsets === true ? roundOffsetsByDPR({
    x: x,
    y: y
  }) : {
    x: x,
    y: y
  };
1261
  x = _ref4.x;
  y = _ref4.y;
1264
  if (gpuAcceleration) {
    var _Object$assign;
1267
    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$assign));
  }
1270
  return Object.assign({}, commonStyles, (_Object$assign2 = {}, _Object$assign2[sideY] = hasY ? y + "px" : '', _Object$assign2[sideX] = hasX ? x + "px" : '', _Object$assign2.transform = '', _Object$assign2));
}
1273
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;
1283
  {
    var transitionProperty = getComputedStyle(state.elements.popper).transitionProperty || '';
1286
    if (adaptive && ['transform', 'top', 'right', 'bottom', 'left'].some(function (property) {
      return transitionProperty.indexOf(property) >= 0;
    })) {
      console.warn(['Popper: Detected CSS transitions on at least one of the following', 'CSS properties: "transform", "top", "right", "bottom", "left".', '\n\n', 'Disable the "computeStyles" modifier\'s `adaptive` option to allow', 'for smooth transitions, or remove these properties from the CSS', 'transition declaration on the popper element if only transitioning', 'opacity or background-color for example.', '\n\n', 'We recommend using the popper element as a wrapper around an inner', 'element that can have any CSS property transitioned for animations.'].join(' '));
    }
  }
1293
  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'
  };
1302
  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
    })));
  }
1311
  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
    })));
  }
1320
  state.attributes.popper = Object.assign({}, state.attributes.popper, {
    'data-popper-placement': state.placement
  });
} // eslint-disable-next-line import/no-unused-modules
1325
1326
var computeStyles$1 = {
  name: 'computeStyles',
  enabled: true,
  phase: 'beforeWrite',
  fn: computeStyles,
  data: {}
};
1334
// and applies them to the HTMLElements such as popper and arrow
1336
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
1343
    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]
1349
1350
    Object.assign(element.style, style);
    Object.keys(attributes).forEach(function (name) {
      var value = attributes[name];
1354
      if (value === false) {
        element.removeAttribute(name);
      } else {
        element.setAttribute(name, value === true ? '' : value);
      }
    });
  });
}
1363
function effect$1(_ref2) {
  var state = _ref2.state;
  var initialStyles = {
    popper: {
      position: state.options.strategy,
      left: '0',
      top: '0',
      margin: '0'
    },
    arrow: {
      position: 'absolute'
    },
    reference: {}
  };
  Object.assign(state.elements.popper.style, initialStyles.popper);
  state.styles = initialStyles;
1380
  if (state.elements.arrow) {
    Object.assign(state.elements.arrow.style, initialStyles.arrow);
  }
1384
  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
1390
      var style = styleProperties.reduce(function (style, property) {
        style[property] = '';
        return style;
      }, {}); // arrow is optional + virtual elements
1395
      if (!isHTMLElement(element) || !getNodeName(element)) {
        return;
      }
1399
      Object.assign(element.style, style);
      Object.keys(attributes).forEach(function (attribute) {
        element.removeAttribute(attribute);
      });
    });
  };
} // eslint-disable-next-line import/no-unused-modules
1407
1408
var applyStyles$1 = {
  name: 'applyStyles',
  enabled: true,
  phase: 'write',
  fn: applyStyles,
  effect: effect$1,
  requires: ['computeStyles']
};
1417
function distanceAndSkiddingToXY(placement, rects, offset) {
  var basePlacement = getBasePlacement(placement);
  var invertDistance = [left, top].indexOf(basePlacement) >= 0 ? -1 : 1;
1421
  var _ref = typeof offset === 'function' ? offset(Object.assign({}, rects, {
    placement: placement
  })) : offset,
      skidding = _ref[0],
      distance = _ref[1];
1427
  skidding = skidding || 0;
  distance = (distance || 0) * invertDistance;
  return [left, right].indexOf(basePlacement) >= 0 ? {
    x: distance,
    y: skidding
  } : {
    x: skidding,
    y: distance
  };
}
1438
function offset(_ref2) {
  var state = _ref2.state,
      options = _ref2.options,
      name = _ref2.name;
  var _options$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;
1452
  if (state.modifiersData.popperOffsets != null) {
    state.modifiersData.popperOffsets.x += x;
    state.modifiersData.popperOffsets.y += y;
  }
1457
  state.modifiersData[name] = data;
} // eslint-disable-next-line import/no-unused-modules
1460
1461
var offset$1 = {
  name: 'offset',
  enabled: true,
  phase: 'main',
  requires: ['popperOffsets'],
  fn: offset
};
1469
var hash$1 = {
  left: 'right',
  right: 'left',
  bottom: 'top',
  top: 'bottom'
};
function getOppositePlacement(placement) {
  return placement.replace(/left|right|bottom|top/g, function (matched) {
    return hash$1[matched];
  });
}
1481
var hash = {
  start: 'end',
  end: 'start'
};
function getOppositeVariationPlacement(placement) {
  return placement.replace(/start|end/g, function (matched) {
    return hash[matched];
  });
}
1491
function computeAutoPlacement(state, options) {
  if (options === void 0) {
    options = {};
  }
1496
  var _options = options,
      placement = _options.placement,
      boundary = _options.boundary,
      rootBoundary = _options.rootBoundary,
      padding = _options.padding,
      flipVariations = _options.flipVariations,
      _options$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;
  });
1512
  if (allowedPlacements.length === 0) {
    allowedPlacements = placements$1;
1515
    {
      console.error(['Popper: The `allowedAutoPlacements` option did not allow any', 'placements. Ensure the `placement` option matches the variation', 'of the allowed placements.', 'For example, "auto" cannot be used to allow "bottom-start".', 'Use "auto-start" instead.'].join(' '));
    }
  } // $FlowFixMe[incompatible-type]: Flow seems to have problems with two array unions...
1520
1521
  var overflows = allowedPlacements.reduce(function (acc, placement) {
    acc[placement] = detectOverflow(state, {
      placement: placement,
      boundary: boundary,
      rootBoundary: rootBoundary,
      padding: padding
    })[getBasePlacement(placement)];
    return acc;
  }, {});
  return Object.keys(overflows).sort(function (a, b) {
    return overflows[a] - overflows[b];
  });
}
1535
function getExpandedFallbackPlacements(placement) {
  if (getBasePlacement(placement) === auto) {
    return [];
  }
1540
  var oppositePlacement = getOppositePlacement(placement);
  return [getOppositeVariationPlacement(placement), oppositePlacement, getOppositeVariationPlacement(oppositePlacement)];
}
1544
function flip(_ref) {
  var state = _ref.state,
      options = _ref.options,
      name = _ref.name;
1549
  if (state.modifiersData[name]._skip) {
    return;
  }
1553
  var _options$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];
1585
  for (var i = 0; i < placements.length; i++) {
    var placement = placements[i];
1588
    var _basePlacement = getBasePlacement(placement);
1590
    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;
1602
    if (referenceRect[len] > popperRect[len]) {
      mainVariationSide = getOppositePlacement(mainVariationSide);
    }
1606
    var altVariationSide = getOppositePlacement(mainVariationSide);
    var checks = [];
1609
    if (checkMainAxis) {
      checks.push(overflow[_basePlacement] <= 0);
    }
1613
    if (checkAltAxis) {
      checks.push(overflow[mainVariationSide] <= 0, overflow[altVariationSide] <= 0);
    }
1617
    if (checks.every(function (check) {
      return check;
    })) {
      firstFittingPlacement = placement;
      makeFallbackChecks = false;
      break;
    }
1625
    checksMap.set(placement, checks);
  }
1628
  if (makeFallbackChecks) {
    // `2` may be desired in some cases – research later
    var numberOfChecks = flipVariations ? 3 : 1;
1632
    var _loop = function _loop(_i) {
      var fittingPlacement = placements.find(function (placement) {
        var checks = checksMap.get(placement);
1636
        if (checks) {
          return checks.slice(0, _i).every(function (check) {
            return check;
          });
        }
      });
1643
      if (fittingPlacement) {
        firstFittingPlacement = fittingPlacement;
        return "break";
      }
    };
1649
    for (var _i = numberOfChecks; _i > 0; _i--) {
      var _ret = _loop(_i);
1652
      if (_ret === "break") break;
    }
  }
1656
  if (state.placement !== firstFittingPlacement) {
    state.modifiersData[name]._skip = true;
    state.placement = firstFittingPlacement;
    state.reset = true;
  }
} // eslint-disable-next-line import/no-unused-modules
1663
1664
var flip$1 = {
  name: 'flip',
  enabled: true,
  phase: 'main',
  fn: flip,
  requiresIfExists: ['offset'],
  data: {
    _skip: false
  }
};
1675
function getAltAxis(axis) {
  return axis === 'x' ? 'y' : 'x';
}
1679
function within(min$1, value, max$1) {
  return max(min$1, min(value, max$1));
}
function withinMaxClamp(min, value, max) {
  var v = within(min, value, max);
  return v > max ? max : v;
}
1687
function preventOverflow(_ref) {
  var state = _ref.state,
      options = _ref.options,
      name = _ref.name;
  var _options$mainAxis = options.mainAxis,
      checkMainAxis = _options$mainAxis === void 0 ? true : _options$mainAxis,
      _options$altAxis = options.altAxis,
      checkAltAxis = _options$altAxis === void 0 ? false : _options$altAxis,
      boundary = options.boundary,
      rootBoundary = options.rootBoundary,
      altBoundary = options.altBoundary,
      padding = options.padding,
      _options$tether = options.tether,
      tether = _options$tether === void 0 ? true : _options$tether,
      _options$tetherOffset = options.tetherOffset,
      tetherOffset = _options$tetherOffset === void 0 ? 0 : _options$tetherOffset;
  var overflow = detectOverflow(state, {
    boundary: boundary,
    rootBoundary: rootBoundary,
    padding: padding,
    altBoundary: altBoundary
  });
  var basePlacement = getBasePlacement(state.placement);
  var variation = getVariation(state.placement);
  var isBasePlacement = !variation;
  var mainAxis = getMainAxisFromPlacement(basePlacement);
  var altAxis = getAltAxis(mainAxis);
  var popperOffsets = state.modifiersData.popperOffsets;
  var referenceRect = state.rects.reference;
  var popperRect = state.rects.popper;
  var tetherOffsetValue = typeof tetherOffset === 'function' ? tetherOffset(Object.assign({}, state.rects, {
    placement: state.placement
  })) : tetherOffset;
  var normalizedTetherOffsetValue = typeof tetherOffsetValue === 'number' ? {
    mainAxis: tetherOffsetValue,
    altAxis: tetherOffsetValue
  } : Object.assign({
    mainAxis: 0,
    altAxis: 0
  }, tetherOffsetValue);
  var offsetModifierState = state.modifiersData.offset ? state.modifiersData.offset[state.placement] : null;
  var data = {
    x: 0,
    y: 0
  };
1733
  if (!popperOffsets) {
    return;
  }
1737
  if (checkMainAxis) {
    var _offsetModifierState$;
1740
    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$1 = offset - overflow[altSide];
    var additive = tether ? -popperRect[len] / 2 : 0;
    var minLen = variation === start ? referenceRect[len] : popperRect[len];
    var maxLen = variation === start ? -popperRect[len] : -referenceRect[len]; // We need to include the arrow in the calculation so the arrow doesn't go
    // outside the reference bounds
1751
    var arrowElement = state.elements.arrow;
    var arrowRect = tether && arrowElement ? getLayoutRect(arrowElement) : {
      width: 0,
      height: 0
    };
    var arrowPaddingObject = state.modifiersData['arrow#persistent'] ? state.modifiersData['arrow#persistent'].padding : getFreshSideObject();
    var arrowPaddingMin = arrowPaddingObject[mainSide];
    var arrowPaddingMax = arrowPaddingObject[altSide]; // If the reference length is smaller than the arrow length, we don't want
    // to include its full size in the calculation. If the reference is small
    // and near the edge of a boundary, the popper can overflow even if the
    // reference is not overflowing as well (e.g. virtual elements with no
    // width or height)
1764
    var arrowLen = within(0, referenceRect[len], arrowRect[len]);
    var minOffset = isBasePlacement ? referenceRect[len] / 2 - additive - arrowLen - arrowPaddingMin - normalizedTetherOffsetValue.mainAxis : minLen - arrowLen - arrowPaddingMin - normalizedTetherOffsetValue.mainAxis;
    var maxOffset = isBasePlacement ? -referenceRect[len] / 2 + additive + arrowLen + arrowPaddingMax + normalizedTetherOffsetValue.mainAxis : maxLen + arrowLen + arrowPaddingMax + normalizedTetherOffsetValue.mainAxis;
    var arrowOffsetParent = state.elements.arrow && getOffsetParent(state.elements.arrow);
    var clientOffset = arrowOffsetParent ? mainAxis === 'y' ? arrowOffsetParent.clientTop || 0 : arrowOffsetParent.clientLeft || 0 : 0;
    var offsetModifierValue = (_offsetModifierState$ = 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;
  }
1777
  if (checkAltAxis) {
    var _offsetModifierState$2;
1780
    var _mainSide = mainAxis === 'x' ? top : left;
1782
    var _altSide = mainAxis === 'x' ? bottom : right;
1784
    var _offset = popperOffsets[altAxis];
1786
    var _len = altAxis === 'y' ? 'height' : 'width';
1788
    var _min = _offset + overflow[_mainSide];
1790
    var _max = _offset - overflow[_altSide];
1792
    var isOriginSide = [top, left].indexOf(basePlacement) !== -1;
1794
    var _offsetModifierValue = (_offsetModifierState$2 = offsetModifierState == null ? void 0 : offsetModifierState[altAxis]) != null ? _offsetModifierState$2 : 0;
1796
    var _tetherMin = isOriginSide ? _min : _offset - referenceRect[_len] - popperRect[_len] - _offsetModifierValue + normalizedTetherOffsetValue.altAxis;
1798
    var _tetherMax = isOriginSide ? _offset + referenceRect[_len] + popperRect[_len] - _offsetModifierValue - normalizedTetherOffsetValue.altAxis : _max;
1800
    var _preventedOffset = tether && isOriginSide ? withinMaxClamp(_tetherMin, _offset, _tetherMax) : within(tether ? _tetherMin : _min, _offset, tether ? _tetherMax : _max);
1802
    popperOffsets[altAxis] = _preventedOffset;
    data[altAxis] = _preventedOffset - _offset;
  }
1806
  state.modifiersData[name] = data;
} // eslint-disable-next-line import/no-unused-modules
1809
1810
var preventOverflow$1 = {
  name: 'preventOverflow',
  enabled: true,
  phase: 'main',
  fn: preventOverflow,
  requiresIfExists: ['offset']
};
1818
var toPaddingObject = function toPaddingObject(padding, state) {
  padding = typeof padding === 'function' ? padding(Object.assign({}, state.rects, {
    placement: state.placement
  })) : padding;
  return mergePaddingObject(typeof padding !== 'number' ? padding : expandToHashMap(padding, basePlacements));
};
1825
function arrow(_ref) {
  var _state$modifiersData$;
1828
  var state = _ref.state,
      name = _ref.name,
      options = _ref.options;
  var arrowElement = state.elements.arrow;
  var popperOffsets = state.modifiersData.popperOffsets;
  var basePlacement = getBasePlacement(state.placement);
  var axis = getMainAxisFromPlacement(basePlacement);
  var isVertical = [left, right].indexOf(basePlacement) >= 0;
  var len = isVertical ? 'height' : 'width';
1838
  if (!arrowElement || !popperOffsets) {
    return;
  }
1842
  var paddingObject = toPaddingObject(options.padding, state);
  var arrowRect = getLayoutRect(arrowElement);
  var minProp = axis === 'y' ? top : left;
  var maxProp = axis === 'y' ? bottom : right;
  var endDiff = state.rects.reference[len] + state.rects.reference[axis] - popperOffsets[axis] - state.rects.popper[len];
  var startDiff = popperOffsets[axis] - state.rects.reference[axis];
  var arrowOffsetParent = getOffsetParent(arrowElement);
  var clientSize = arrowOffsetParent ? axis === 'y' ? arrowOffsetParent.clientHeight || 0 : arrowOffsetParent.clientWidth || 0 : 0;
  var centerToReference = endDiff / 2 - startDiff / 2; // Make sure the arrow doesn't overflow the popper if the center point is
  // outside of the popper bounds
1853
  var min = paddingObject[minProp];
  var max = clientSize - arrowRect[len] - paddingObject[maxProp];
  var center = clientSize / 2 - arrowRect[len] / 2 + centerToReference;
  var offset = within(min, center, max); // Prevents breaking syntax highlighting...
1858
  var axisProp = axis;
  state.modifiersData[name] = (_state$modifiersData$ = {}, _state$modifiersData$[axisProp] = offset, _state$modifiersData$.centerOffset = offset - center, _state$modifiersData$);
}
1862
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;
1868
  if (arrowElement == null) {
    return;
  } // CSS selector
1872
1873
  if (typeof arrowElement === 'string') {
    arrowElement = state.elements.popper.querySelector(arrowElement);
1876
    if (!arrowElement) {
      return;
    }
  }
1881
  {
    if (!isHTMLElement(arrowElement)) {
      console.error(['Popper: "arrow" element must be an HTMLElement (not an SVGElement).', 'To use an SVG arrow, wrap it in an HTMLElement that will be used as', 'the arrow.'].join(' '));
    }
  }
1887
  if (!contains(state.elements.popper, arrowElement)) {
    {
      console.error(['Popper: "arrow" modifier\'s `element` must be a child of the popper', 'element.'].join(' '));
    }
1892
    return;
  }
1895
  state.elements.arrow = arrowElement;
} // eslint-disable-next-line import/no-unused-modules
1898
1899
var arrow$1 = {
  name: 'arrow',
  enabled: true,
  phase: 'main',
  fn: arrow,
  effect: effect,
  requires: ['popperOffsets'],
  requiresIfExists: ['preventOverflow']
};
1909
function getSideOffsets(overflow, rect, preventedOffsets) {
  if (preventedOffsets === void 0) {
    preventedOffsets = {
      x: 0,
      y: 0
    };
  }
1917
  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
  };
}
1925
function isAnySideFullyClipped(overflow) {
  return [top, right, bottom, left].some(function (side) {
    return overflow[side] >= 0;
  });
}
1931
function hide(_ref) {
  var state = _ref.state,
      name = _ref.name;
  var referenceRect = state.rects.reference;
  var popperRect = state.rects.popper;
  var preventedOffsets = state.modifiersData.preventOverflow;
  var referenceOverflow = detectOverflow(state, {
    elementContext: 'reference'
  });
  var popperAltOverflow = detectOverflow(state, {
    altBoundary: true
  });
  var referenceClippingOffsets = getSideOffsets(referenceOverflow, referenceRect);
  var popperEscapeOffsets = getSideOffsets(popperAltOverflow, popperRect, preventedOffsets);
  var isReferenceHidden = isAnySideFullyClipped(referenceClippingOffsets);
  var hasPopperEscaped = isAnySideFullyClipped(popperEscapeOffsets);
  state.modifiersData[name] = {
    referenceClippingOffsets: referenceClippingOffsets,
    popperEscapeOffsets: popperEscapeOffsets,
    isReferenceHidden: isReferenceHidden,
    hasPopperEscaped: hasPopperEscaped
  };
  state.attributes.popper = Object.assign({}, state.attributes.popper, {
    'data-popper-reference-hidden': isReferenceHidden,
    'data-popper-escaped': hasPopperEscaped
  });
} // eslint-disable-next-line import/no-unused-modules
1959
1960
var hide$1 = {
  name: 'hide',
  enabled: true,
  phase: 'main',
  requiresIfExists: ['preventOverflow'],
  fn: hide
};
1968
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
1973
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
1978
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;
1993
Object.defineProperty(exports, '__esModule', { value: true });
1995
1996})));
1997//# sourceMappingURL=popper.js.map
1	`/**`
2	`* @popperjs/core v2.11.5 - MIT License`
3	`*/`
4
5	`(function (global, factory) {`
6	`typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :`
7	`typeof define === 'function' && define.amd ? define(['exports'], factory) :`
8	`(global = typeof globalThis !== 'undefined' ? globalThis : global \|\| self, factory(global.Popper = {}));`
9	`}(this, (function (exports) { 'use strict';`
10
11	`function getWindow(node) {`
12	`if (node == null) {`
13	`return window;`
14	`}`
15
16	`if (node.toString() !== '[object Window]') {`
17	`var ownerDocument = node.ownerDocument;`
18	`return ownerDocument ? ownerDocument.defaultView \|\| window : window;`
19	`}`
20
21	`return node;`
22	`}`
23
24	`function isElement(node) {`
25	`var OwnElement = getWindow(node).Element;`
26	`return node instanceof OwnElement \|\| node instanceof Element;`
27	`}`
28
29	`function isHTMLElement(node) {`
30	`var OwnElement = getWindow(node).HTMLElement;`
31	`return node instanceof OwnElement \|\| node instanceof HTMLElement;`
32	`}`
33
34	`function isShadowRoot(node) {`
35	`// IE 11 has no ShadowRoot`
36	`if (typeof ShadowRoot === 'undefined') {`
37	`return false;`
38	`}`
39
40	`var OwnElement = getWindow(node).ShadowRoot;`