@Barret_China: The team put the Claude Code source code into a WebAssembly runtime, also bundled Node.js and Python environments, and now you can happily use Claude Code directly on the web. Four layers of work were done based on the Claude Code source code…
Summary
The team ported the Claude Code source code to the WebAssembly runtime, bundling Node.js and Python, and achieved running Claude Code directly in the browser, including a terminal UI and a local-like isolated execution environment.
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Cached at: 05/16/26, 03:20 PM
The team put Claude Code’s source code into a WebAssembly runtime, packaged Node.js and Python environments as well, and now it can run smoothly directly in the browser.
Based on the Claude Code source code, four layers of work were done, including: 1) Browser host – providing the terminal interface, session state, and interactive experience of Claude Code in the web page; 2) WebContainer/WASI runtime – delivering a near-native, isolated execution environment within the browser, actually running Node.js, Shell, and Python; 3) Node compatibility layer – adapting file system, processes, module loading, etc., for the browser side; 4) HostBridge – bridging external capabilities such as search, fetch, proxy, and file synchronization between the web host and the runtime. The overall workload is substantial.
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