Method on

packages/nodebox/src/messages.ts:274–290

(
    event: Event,
    listener: (message: MessageEvent<WorkerEvents[Event]>) => void,
    options?: AddEventListenerOptions
  )

  }

  public on<Event extends keyof WorkerEvents & string>(
    event: Event,
    listener: (message: MessageEvent<WorkerEvents[Event]>) => void,
    options?: AddEventListenerOptions
  ): void {
    debug('[message-sender]: add listener "%s"', event);

    this.emitter.addEventListener(
      event,
      (message) => {
        if (message instanceof MessageEvent) {
          listener(message);
        }
      },
      options
    );
  }

  public off<Event extends keyof WorkerEvents & string>(
    event: Event,