Your NameandClaude Sonnet 5
b200dc2525
现象：验证第2章长按消息弹出菜单的时间窗口门控时发现，无论消息是不是自己刚发的、群主/普通
成员、发送后多少秒，长按菜单里永远不出现"撤回"这一项——服务端 messagePolicy 明确返回
recall_window_seconds=120，但这个选项在任何情况下都不会出现。
根因：messages-view.jsx 原来 `import { ..., LOCAL_SEQID } from 'tinode-sdk'`，但
webpack.config.js 把 'tinode-sdk' 映射到全局变量 `tinode`（externals: {'tinode-sdk': 'tinode'}），
而这个全局对象（umd/tinode.dev.js 的 UMD 导出）只挂了 {AccessMode, Drafty, TheCard, Tinode}
四个键，从未包含 LOCAL_SEQID——尽管 tinode-sdk 的 ES 模块本身确实导出了这个常量
（umd/tinode.dev.js 内部仍以 `const LOCAL_SEQID = 0xFFFFFFF;` 定义并在多处话题方法里使用，只是
没有挂到对外暴露的全局对象上）。externals 映射对"这个键不在对象上"和"这个导出根本不存在"没有
区分，所以按名字导入被静默解析成 `undefined`，没有任何构建报错。撤回菜单项的门控条件
`params.seq > 0 && params.seq < LOCAL_SEQID` 因此变成 `seq < undefined`，在 JS 里恒为
false——不是时间窗口判断错了，是入口条件本身就从未为真过，撤回功能对所有用户、所有消息实质性
完全失效。
用控制台直接调用 MessagesView 实例的 handleShowMessageContextMenu 并打印各分支布尔值定位到
这一步：seq=2 这样明显合法的正整数，seqOk 却是 false，才追到 LOCAL_SEQID 本身是 undefined。
修复：messages-view.jsx 不再从 'tinode-sdk' 导入 LOCAL_SEQID，改为本文件内本地声明
`const LOCAL_SEQID = 0xFFFFFFF`，与 SDK 内部定义保持一致（未改动 webpack externals 映射本身——
其它页面都依赖它保持现状，改映射风险更大、影响面更广）。
验证：登录测试账号，在群聊里发一条新消息立即长按，确认"撤回"正确出现在菜单中；点击后
`POST /topics/{topic}/messages/{seq}/recall` 返回 200，消息从会话中正确消失；对比一条已经
超过 recall_window_seconds（同时也超过 edit_window_seconds）的旧消息，确认"撤回"和"编辑"
仍正确不显示，时间窗口判断本身未被破坏。
注：umd/index.dev.js 本次未随此提交提交——工作区里并行的其它 agent 仍在改
contact-management-view.jsx / sidepanel-view.jsx 且未提交，重新构建的 index.dev.js 会把它们的
未提交改动一起编译进同一产物文件，为避免混入不相关改动，只提交 messages-view.jsx 按路由懒加载
的独立 chunk（umd/src_views_messages-view_jsx.dev.js 及其 .map），不受这个问题影响。
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Tinode Web
Briefing
Single-page web chat application for Tinode. The app is built on React. The Tinode javascript SDK has no external dependencies. Overall, it's a lot like open source WhatsApp or Telegram web apps.
Although the app is generally usable, keep in mind that this is work in progress. Some bugs probably exist, some features are missing. The app was tested in the latest Chrome & Firefox only. NPM package is available.
Try possibly newer or older version live at https://sandbox.tinode.co/.
For demo access and other instructions see here.
Installing and running
This is NOT a standalone app, this is just a frontend, a client. It requires a backend. See installation instructions. See instructions for enabling push notifications.
Getting support
- Read client-side and server-side API documentation.
- For support, general questions, discussions post to https://groups.google.com/d/forum/tinode.
- For bugs and feature requests open an issue.
- Use https://tinode.co/contact for commercial inquiries.
Helping out
- If you appreciate our work, please help spread the word! Sharing on Reddit, HN, and other communities helps more than you think.
- Consider buying paid support: https://tinode.co/support.html
- If you are a software developer, send us your pull requests with bug fixes and new features.
- If you use the app and discover bugs or missing features, let us know by filing bug reports and feature requests. Vote for existing feature requests you find most valuable.
- If you speak a language other than English, translate the apps into your language. You may also review and improve existing translations.
- If you are a UI/UX expert, help us polish the app UI.
- Use it: install it for your colleagues or friends at work or at home.
Internationalization
The app is fully internationalized using React-Intl. The UI language is selected automatically from the language specified by the browser. A specific language can be forced by adding #?hl=XX parameter to the URL when starting the app, e.g. https://web.tinode.co/#?hl=fr.
The app is currently available in the following languages:
- English - default
- Arabic
- Chinese simplified
- Chinese traditional
- French
- German
- Italian
- Korean
- Romanian
- Russian
- Spanish
- Thai
- Ukrainian
- Vietnamese
More translations are welcome. See instructions.
Not done yet
- End-to-End encryption.
- Emoji support is weak.
- Mentions, hashtags.
- Previews not generated for links and docs.
- Location and contact sharing.
- Recording video messages.
Other
- Demo avatars and some other graphics are from https://www.pexels.com/ under CC0 license.
- Background patterns from http://subtlepatterns.com/, commercial and non-commercial use allowed with attribution.
- Fonts and icons from Google under license which permits commercial and non-commercial use.
- Push notifications built with https://firebase.google.com/.
Responsive design
Desktop screenshot
Mobile screenshots
