boundaries = getBoundaries(\n    popper,\n    reference,\n    padding,\n    boundariesElement\n  );\n\n  const rects = {\n    top: {\n      width: boundaries.width,\n      height: refRect.top - boundaries.top,\n    },\n    right: {\n      width: boundaries.right - refRect.right,\n      height: boundaries.height,\n    },\n    bottom: {\n      width: boundaries.width,\n      height: boundaries.bottom - refRect.bottom,\n    },\n    left: {\n      width: refRect.left - boundaries.left,\n      height:...