text: import _extends from 'babel-runtime/helpers/extends';
  function isPointsEq(a1, a2) {
    return a1[0] === a2[0] && a1[1] === a2[1];
  }
  
  export function getAlignFromPlacement(builtinPlacements, placementStr, align) {
    var baseAlign = builtinPlacements[placementStr] || {};
    return _extends({}, baseAlign, align);
  }
  
  export function getPopupClassNameFromAlign(builtinPlacements, prefixCls, align) {
    var points = align.points;
    for (var placement in builtinPlacements) {
      if (builtinPlacements.hasOwnProperty(placement)) {
        if (isPointsEq(builtinPlacements[placement].points, points)) {
          return prefixCls + '-placement-' + placement;
        }
      }
    }
    return '';
  }