message: fix getComputedStyle
diff: @@ -5,7 +5,6 @@ import {
  getScrollTop,
  getElementTop,
  getVisibleHeight,
  - getComputedStyle,
  getScrollEventTarget
  } from '../utils/scroll';
  @@ -75,7 +74,7 @@ export default sfc({
  const scrollerHeight = getVisibleHeight(scroller);
  /* istanbul ignore next */
  - if (!scrollerHeight || getComputedStyle(el).display === 'none' || el.offsetParent === null) {
  + if (!scrollerHeight || window.getComputedStyle(el).display === 'none' || el.offsetParent === null) {
  return;
  }
  