const basePlacement = placement.split('-')[0];\n  const { popper, reference } = data.offsets;\n  const isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;\n\n  const subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;\n\n  popper[isHoriz ? 'left' : 'top'] =\n    reference[basePlacement] -\n    (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);\n\n  data.placement = getOppositePlacement(placement);\n  data.offsets.popper = getClientRect(popper);\n\n  return data;\n}\n","import...