Function shift

app/src/static/js/react-bootstrap.js:4884–4904

* @function * @memberof Modifiers * @argument {Object} data - The data object generated by `update` method * @argument {Object} options - Modifiers configuration and options * @returns {Object} The data object, properly modified

(data)

function shift(data) {
  var placement = data.placement;
  var basePlacement = placement.split('-')[0];
  var shiftvariation = placement.split('-')[1]; // if shift shiftvariation is specified, run the modifier

  if (shiftvariation) {
    var _data$offsets = data.offsets,
        reference = _data$offsets.reference,
        popper = _data$offsets.popper;
    var isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;
    var side = isVertical ? 'left' : 'top';
    var measurement = isVertical ? 'width' : 'height';
    var shiftOffsets = {
      start: defineProperty({}, side, reference[side]),
      end: defineProperty({}, side, reference[side] + reference[measurement] - popper[measurement])
    };
    data.offsets.popper = _extends({}, popper, shiftOffsets[shiftvariation]);
  }

  return data;
}
/**
 * @function
 * @memberof Modifiers