}\n    else {\n      rect = element.getBoundingClientRect();\n    }\n  }\n  catch(e){}\n\n  const result = {\n    left: rect.left,\n    top: rect.top,\n    width: rect.right - rect.left,\n    height: rect.bottom - rect.top,\n  };\n\n  // subtract scrollbar size from sizes\n  const sizes = element.nodeName === 'HTML' ? getWindowSizes(element.ownerDocument) : {};\n  const width =\n    sizes.width || element.clientWidth || result.width;\n  const height =\n    sizes.height || element.clientHeight || result.height;\n\n...