Method postMessage

src/browser/utils/workerChannel.ts:162–171

* Send data to the Service Worker controlling this client. * This triggers the `message` event listener on ServiceWorkerGlobalScope.

(type: OutgoingWorkerEvents)

   * This triggers the `message` event listener on ServiceWorkerGlobalScope.
   */
  public postMessage(type: OutgoingWorkerEvents): void {
    invariant(
      SUPPORTS_SERVICE_WORKER,
      'Failed to post message on a WorkerChannel: the Service Worker API is unavailable in this environment. This is likely an issue with MSW. Please report it on GitHub: https://github.com/mswjs/msw/issues',
    )

    this.#getWorker().then((worker) => {
      worker.postMessage(type)
    })
  }

  /**
   * Terminal teardown. Removes the `navigator.serviceWorker` message listener