Web Playground

The browser playground lives in web/. It loads examples/basics.rk by default, compiles in WASM when you click Compile, and shows AST, HIR, MIR, emitted Rust/WAT, and run results from generated WASM. Only validated WASM is executed; if WASM generation fails, Rust/graphs still render and diagnostics are shown in the output panel.

From the repository root:

cd web
npm install
npm run build:wasm
npm run dev

Local routes match production layout:

• Homepage
• Playground
• Docs
• Rustdoc

npm run dev runs full mdBook + rustdoc staging once via predev, so Docs and Rustdoc start from current local artifacts. During dev, docs watcher updates run lightweight mdBook/theme sync only (no rustdoc rebuild), so CSS/theme changes still stay in sync without heavy rebuilds.

Run browser E2E tests (Chromium + Firefox):

cd web
npx playwright install chromium firefox
npm run test:e2e