TikTok just released its React Native killer…

好的，以下是 Lynx 框架 Code Report 视频的中文摘要，字数在 500-600 字之间： **Lynx：跨平台移动开发领域的新挑战者** Code Report 的视频介绍了 Lynx，这是一个由 TikTok 母公司字节跳动发布的新开源、多平台应用程序开发框架。它被定位为潜在的“React Native 杀手”，这归功于其声称的性能优势和双线程架构。该视频旨在测试这一说法并探索该框架的潜力。 **解决性能问题** 该视频强调了 Lynx 创建背后的核心原因：性能。尽管 React Native 非常受欢迎，但由于其依赖于单线程 JavaScript 桥，因此经常受到“并非真正的原生”的批评。该桥梁充当 JavaScript 代码和原生代码（iOS 上的 Swift 或 Android 上的 Kotlin）之间通信的瓶颈，导致性能问题并经常影响用户体验。 虽然 React Native 团队试图通过 Hermes 引擎和 Fabric 渲染器来解决这些问题，但字节跳动采用了不同的方法，推出了 Lynx。Lynx 采用双线程架构，将用户代码和框架代码分离到两个不同的运行时中。 **双线程架构及其优势** Lynx 中的主线程由 Prim.js 驱动，这是一个基于 Quick.js 构建的 JavaScript 引擎，Quick.js 是一个仅 210kb 的小型引擎。该主线程处理同步 UI 任务，例如事件处理。用户代码（通常效率低下或优化不佳）在单独的线程上运行。这种分离至关重要，因为它防止了编写不佳的用户代码阻塞主线程并降低应用程序的整体性能。 其结果是更快的首帧渲染，最大限度地减少了应用程序启动期间出现的空白屏幕，这在其他跨平台框架中是一个常见的痛点。 **与框架无关且对 Web 友好** Lynx 的一个显著特点是其引擎与框架无关。开发者不必被迫使用 React；他们可以使用其他框架，如 Svelte 或 Vue.js。此外，Lynx 支持原生 CSS 功能进行样式设置，包括过渡、变量和渐变，这使其对于习惯于标准 CSS 的 Web 开发者来说更加直观。 **缺点：生态系统和工具** 该视频承认了一个重要的缺点：围绕 Lynx 缺乏成熟的生态系统。与 React Native 拥有庞大的组件库、工具和社区支持不同，Lynx 相对较新，缺乏这种基础设施。 没有像 Expo 这样的工具来处理常见的开发任务，并且缺乏全面的小部件库需要开发者做更多的工作。 **动手测试和初步印象** 然后，该视频深入探讨了 Lynx 的动手测试。生成一个新项目显示它使用 RS Pack，一个基于 Rust 的模块捆绑器，旨在比 Vite 更快。项目结构类似于带有 HTML 和 CSS 的基本 React 项目。但是，Lynx 没有使用标准的 HTML 元素，而是使用自定义元素，例如 `<view>`、`<text>` 和 `<image>`。 这些元素映射到不同平台上的原生 UI 组件（例如，iOS 上的 `UIView`、Android 上的 `ViewGroup` 和 Web 上的 `div`）。开发者可以使用常规 CSS 甚至 Tailwind CSS 为这些元素设置样式。 该视频在 Windows 上运行该项目时遇到了挑战，需要使用 Windows Subsystem for Linux。最终，macOS 被证明是使用 Lynx 进行开发的更可靠的环境。实时预览功能（当代码更改时自动在连接的移动设备上重新渲染应用程序）在 macOS 上运行平稳。 **结论：有潜力但需要进一步开发** 该视频的结论是，Lynx 具有相当大的潜力。 其双线程架构和与框架无关的引擎提供了优于现有跨平台解决方案的潜在性能优势。 然而，缺乏成熟的生态系统和工具是一个重要的障碍。 该视频建议关注 Lynx 的发展，但承认需要大量工作来建立强大的社区和一套全面的工具。 最后，视频介绍了 Code Rabbit，这是一个用于代码审查的 AI 协同助手，也是该视频的赞助商。

Alright, here's a summary of the Code Report video about the Lynx framework, aiming for 500-600 words: **Lynx: A New Contender in Cross-Platform Mobile Development** The Code Report video introduces Lynx, a newly released open-source, multi-platform app development framework created by ByteDance, the company behind TikTok. It's positioned as a potential "React Native killer" due to its claimed performance advantages and dual-threaded architecture. The video aims to test this claim and explore the framework's potential. **Addressing Performance Concerns** The video highlights the central reason behind Lynx's creation: performance. React Native, despite its popularity, has often been criticized for not feeling "truly native" due to its reliance on a single-threaded JavaScript bridge. This bridge acts as a bottleneck for communication between JavaScript code and native code (Swift on iOS or Kotlin on Android), leading to performance issues and often impacting the user experience. While the React Native team has attempted to address these issues with the Hermes engine and the Fabric renderer, ByteDance has taken a different approach with Lynx. Lynx utilizes a dual-threaded architecture, separating user code and framework code into two distinct runtimes. **Dual-Threaded Architecture and its Advantages** The main thread in Lynx is powered by Prim.js, a JavaScript engine built on Quick.js, a tiny 210kb engine. This main thread handles synchronous UI tasks, such as event handling. User code, which can often be inefficient or poorly optimized, runs on a separate thread. This separation is crucial because it prevents poorly written user code from blocking the main thread and degrading the overall performance of the application. The result is faster first-frame rendering, minimizing the appearance of blank screens during app launch, a common pain point in other cross-platform frameworks. **Framework Agnostic and Web-Friendly** One notable feature of Lynx is that its engine is framework agnostic. Developers are not forced to use React; they can use other frameworks like Svelte or Vue.js. Furthermore, Lynx supports native CSS features for styling, including transitions, variables, and gradients, making it more intuitive for web developers accustomed to standard CSS. **Drawbacks: Ecosystem and Tooling** The video acknowledges a significant drawback: the lack of a mature ecosystem around Lynx. Unlike React Native with its vast library of components, tooling, and community support, Lynx is relatively new and lacks this infrastructure. There is no Expo-like tooling to handle common development tasks, and the absence of a comprehensive widget library necessitates more work for developers. **Hands-On Testing and Initial Impressions** The video then delves into a hands-on test of Lynx. Generating a new project reveals that it uses RS Pack, a Rust-based module bundler designed to be faster than Vite. The project structure resembles a basic React project with HTML and CSS. However, instead of standard HTML elements, Lynx uses custom elements like `<view>`, `<text>`, and `<image>`. These elements map to native UI components on different platforms (e.g., `UIView` on iOS, `ViewGroup` on Android, and `div` on the web). Developers can style these elements using regular CSS or even Tailwind CSS. The video encountered challenges in running the project on Windows, requiring the use of the Windows Subsystem for Linux. Ultimately, macOS proved to be a more reliable environment for development with Lynx. The live preview feature, which automatically rerenders the app on a connected mobile device when code changes are made, worked smoothly on macOS. **Conclusion: Potential but Requires Further Development** The video concludes that Lynx shows considerable promise. Its dual-threaded architecture and framework-agnostic engine offer potential performance advantages over existing cross-platform solutions. However, the lack of a mature ecosystem and tooling is a significant hurdle. The video suggests keeping an eye on Lynx as it develops, but acknowledges that substantial work is needed to build a robust community and comprehensive set of tools. Finally, it introduces Code Rabbit, an AI co-pilot for code reviews and the video's sponsor.