How to use the react-dom.unmountComponentAtNode function in react-dom

destroy() {
    // TODO: is this right?
    this.emitter.emit('did-destroy');
    this.emitter.dispose();
    ReactDom.unmountComponentAtNode(this.getElement());
  }
}

export default async function renderMain({
  storyFn,
  selectedKind,
  selectedStory,
  showMain,
  forceRender,
}: RenderMainArgs) {
  const element = storyFn();

  // We need to unmount the existing set of components in the DOM node.
  // Otherwise, React may not recreate instances for every story run.
  // This could leads to issues like below:
  // https://github.com/storybookjs/react-storybook/issues/81
  // But forceRender means that it's the same story, so we want too keep the state in that case.
  if (!forceRender) {
    ReactDOM.unmountComponentAtNode(rootEl);
  }

  await render(element, rootEl, { name: selectedStory, kind: selectedKind });
  showMain();
}

const reload = () => {
    ReactDOM.unmountComponentAtNode(config.node);
    setTimeout(() => {
      // for some reason React 16 does unmountComponentAtNode asynchronously (?)
      config.node.innerHTML = '';
      render();
    }, 0);
  };

afterEach(function() {
    ReactDOM.unmountComponentAtNode(div);
    document.body.removeChild(div);
  });

  afterEach(() => unmountComponentAtNode(node))

module.hot.accept(['containers/App'], () => {
    ReactDOM.unmountComponentAtNode(MOUNT_NODE);
    render();
  });
}

executeCode (code, variant) {
    const mountNode = this.refs.mount

    ReactDOM.unmountComponentAtNode(mountNode)

    this.setState({
      error: null,
      variant
    })

    if (!code) {
      return
    }

    try {
      const compiledCode = this.compileCode(code)
      const component = this.evalCode(compiledCode)

      ReactDOM.render(component, mountNode)
    } catch (err) {

removeContainer = () => {
    if (this.container) {
      ReactDOM.unmountComponentAtNode(this.container);
      this.container.parentNode.removeChild(this.container);
      this.container = null;
    }
  }

const destroyFieldEditor = () => {
  const node = document.getElementById(REACT_FIELD_EDITOR_ID);
  node && unmountComponentAtNode(node);
};

function deprecatedClose () {
    mountNode && unmountComponentAtNode(mountNode)
    mountNode = undefined
  }
  return { close: deprecatedClose }