Function emit

packages/react-devtools-shared/src/hook.js:266–270

(event: string, data: any)

  }

  function emit(event: string, data: any) {
    if (listeners[event]) {
      listeners[event].map(fn => fn(data));
    }
  }

  function getFiberRoots(rendererID: RendererID) {
    const roots = fiberRoots;