Function emit

lib/internal/child_process.js:971–981

(event, message, handle)

  };

  function emit(event, message, handle) {
    if ('internalMessage' === event || target.listenerCount('message')) {
      target.emit(event, message, handle);
      return;
    }

    ArrayPrototypePush(
      target.channel[kPendingMessages],
      [event, message, handle],
    );
  }

  function handleMessage(message, handle, internal) {
    if (!target.channel)