rc-util/es/setStyle.js

/**
 * Easy to set element style, return previous style
 * IE browser compatible(IE browser doesn't merge overflow style, need to set it separately)
 * https://github.com/ant-design/ant-design/issues/19393
 *
 */
function setStyle(style) {
  var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
  if (!style) {
    return {};
  }
  var _options$element = options.element,
    element = _options$element === void 0 ? document.body : _options$element;
  var oldStyle = {};
  var styleKeys = Object.keys(style);

  // IE browser compatible
  styleKeys.forEach(function (key) {
    oldStyle[key] = element.style[key];
  });
  styleKeys.forEach(function (key) {
    element.style[key] = style[key];
  });
  return oldStyle;
}
export default setStyle;