message: Set up body scroll on mount
diff: @@ -40,6 +40,11 @@ class Sheet extends React.Component<Props & Partial<GestureState>> {
  componentDidMount() {
  document.body.addEventListener('keyup', this.onKeyUp);
  + const iOS = /iPad|iPhone|iPod/.test(navigator.userAgent);
  + if (iOS) {
  + enableBodyScroll(this.sheetContents.current);
  + disableBodyScroll(this.sheetContents.current);
  + }
  }
  componentDidUpdate() {
  