rust-wasm

Debugging

0. Install wasm-bindgen-cli and Chrome extension C/C++ DevTools Support (DWARF) (only compatible with Chrome Canary and Dev version, MSEdge is not supported).

1. Build

   cargo build --target wasm32-unknown-unknown
   wasm-bindgen --keep-debug --web --out-dir pkg target/wasm32-unknown-unknown/debug/rust_wasm.wasm

   wasm-pack is not used because it does not support --keep-debug option. See rustwasm/wasm-pack#1351.

2. Serve

   python3 -m http.server

   Or use any other http server you like.

3. Open http://localhost:8000

4. Open Chrome DevTools and go to Sources tab.

   You should see top -> file:// -> ${workspaceFolder}/src -> lib.rs under Page pane.

5. VSCode is also supported. Use VSCode Insiders version and install WebAssembly DWARF Debugging extension.