Method onEntering

src/CarouselItem.js:33–39

(node, isAppearing)

  }

  onEntering(node, isAppearing) {
    // getting this variable triggers a reflow
    const { offsetHeight } = node;
    this.setState({ startAnimation: true });
    this.props.onEntering(node, isAppearing);
    return offsetHeight;
  }

  onExit(node) {
    this.setState({ startAnimation: false });