Function actAsync

packages/react-devtools-shared/src/__tests__/utils.js:94–124

(
  cb: () => *,
  recursivelyFlush: boolean = true,
)

}

export async function actAsync(
  cb: () => *,
  recursivelyFlush: boolean = true,
): Promise<void> {
  // act from react-test-renderer has some side effects on React DevTools
  // it injects the renderer for DevTools, see ReactTestRenderer.js
  const actTestRenderer = getActTestRendererImplementation();
  const actDOM = getActDOMImplementation();

  await actDOM(async () => {
    await actTestRenderer(async () => {
      await cb();
    });
  });

  if (recursivelyFlush) {
    while (jest.getTimerCount() > 0) {
      await actDOM(async () => {
        await actTestRenderer(async () => {
          jest.runAllTimers();
        });
      });
    }
  } else {
    await actDOM(async () => {
      await actTestRenderer(async () => {
        jest.runOnlyPendingTimers();
      });
    });
  }
}

type RenderImplementation = {
  render: (elements: ?ReactNode) => () => void,