message: Update packages/hooks/src/useInViewport/index.ts
diff: @@ -4,7 +4,7 @@ import { getTargetElement, BasicTarget } from '../utils/dom';
  type InViewport = boolean | undefined;
  -function isInViewPort(el: HTMLElement): boolean | undefined {
  +function isInViewPort(el: HTMLElement): InViewport {
  if (!el) {
  return undefined;
  }
  