Finally, I made clangd work in browser. You can now get C++ IntelliSense directly without installing any native compiler or relying on a remote server.
This repo contains a build script for clangd on WebAssembly (TBD), and an example of using clangd WASM module together with Monaco Editor powered by it's Language Client port (thanks TypeFox/monaco-languageclient).
You can take a look at build.sh for how to build clangd to WASM. Once clangd.wasm generated at public/wasm, you can build those frontend code using pnpm install and pnpm build.
I've publish a GitHub Page for demonstrating how clangd works in your browser.
Notice that clangd is a multi-thread program, so we need SharedArrayBuffer -- and more over, a strict context called crossOriginIsolated. GitHub Pages do not send COOP/COEP headers for us to enabling that context, so I served this site through CloudFlare with a custom rule adding those headers. If you want to deploy this project by yourself, make sure correct COOP/COEP header is set on the server side, or you can use coi-serviceworker.
You can pass URL search parameters to control the initial state of this page (see here), or embed it in your website (see here, your website needs to be cross-origin-isolated too)
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HTML:
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UTF-8
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