(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';

  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];

  exports.afterMain = afterMain;
  exports.afterRead = afterRead;
  exports.afterWrite = afterWrite;
  exports.auto = auto;
  exports.basePlacements = basePlacements;
  exports.beforeMain = beforeMain;
  exports.beforeRead = beforeRead;
  exports.beforeWrite = beforeWrite;
  exports.bottom = bottom;
  exports.clippingParents = clippingParents;
  exports.end = end;
  exports.left = left;
  exports.main = main;
  exports.modifierPhases = modifierPhases;
  exports.placements = placements;
  exports.popper = popper;
  exports.read = read;
  exports.reference = reference;
  exports.right = right;
  exports.start = start;
  exports.top = top;
  exports.variationPlacements = variationPlacements;
  exports.viewport = viewport;
  exports.write = write;

}));
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