Method postMessage

packages/chrome-extension-mock/runtime.ts:39–43

(message: any)

        url: window.location.href,
      },
      postMessage(message: any) {
        messageListener.forEach((callback) => {
          callback(message);
        });
      },
      onMessage: {
        addListener(callback: (message: any) => void) {
          targetPort.messageListener.push(callback);