message: chore: remove unused getScroller
diff: @@ -4,41 +4,6 @@ function isWindow(val: unknown): val is Window {
  return val === window;
  }
  -// get nearest scroll element
  -// http://w3help.org/zh-cn/causes/SD9013
  -// http://stackoverflow.com/questions/17016740/onscroll-function-is-not-working-for-chrome
  -const overflowScrollReg = /scroll|auto/i;
  -export function getScroller(el: HTMLElement, root: ScrollElement = window) {
  - let node = el;
  -
  - while (
  - node &&
  - node.tagName !== 'HTML' &&
  - node.nodeType === 1 &&
  - node !== root
  - ) {
  - const { overflowY } = window.getComputedStyle(node);
  -
  - if (overflowScrollReg.test(overflowY)) {
  - if (node.tagName !== 'BODY') {
  - return node;
  - }
  -
  - // see: https://github.com/youzan/vant/issues/3823
  - const { overflowY: htmlOverflowY } = window.getComputedStyle(
  - node.parentNode as Element
  - );
  -
  - if (overflowScrollReg.test(htmlOverflowY)) {
  - return node;
  - }
  - }
  - node = node.parentNode as HTMLElement;
  - }
  -
  - return root;
  -}
  -
  export function getScrollTop(el: ScrollElement): number {
  const top = 'scrollTop' in el ? el.scrollTop : el.pageYOffset;
  