code: function (message, transfers) {
      if (transfers && this.postMessageTransfers) {
        this.comObj.postMessage(message, transfers);
      } else {
        this.comObj.postMessage(message);
      }
    }
docs: Sends raw message to the comObj.
  @private
  @param message {Object} Raw message.
  @param transfers List of transfers/ArrayBuffers, or undefined.