Method connect

packages/message/window_message.ts:95–107

(data: TMessage)

  }

  connect(data: TMessage): Promise<MessageConnect> {
    return new Promise((resolve) => {
      const body: WindowMessageBody<TMessage> = {
        messageId: uuidv4(),
        type: "connect",
        data,
      };
      this.target.postMessage(body, "*");
      // 使用 WindowPostMessage 包装，确保后续 sendMessage 也带 "*" targetOrigin
      // 否则沙箱（origin: null）→ offscreen（origin: chrome-extension://）的消息会被丢弃
      resolve(new WindowMessageConnect(body.messageId, this.EE, new WindowPostMessage(this.target)));
    });
  }

  onMessage(
    callback: (data: TMessage, sendResponse: (data: any) => void, sender: RuntimeMessageSender) => boolean | void