Debug Rust WASM by compiling with `--dev` and `wasm32-unknown-unknown` target, then use browser DevTools and panic hooks.
Debug Rust WASM applications by compiling with debug symbols, running in a browser with DevTools, and using console_error_panic_hook to log panics to the console.
rustup target add wasm32-unknown-unknown
cargo build --target wasm32-unknown-unknown --dev
Add console_error_panic_hook to your Cargo.toml and call console_error_panic_hook::set_once() in main to see panic messages in the browser console.
Debugging Rust WASM means turning your code into a format browsers can run while keeping the original line numbers and variable names. You compile with special flags to include these details, then use the browser's built-in developer tools to pause execution and inspect data. It's like using a magnifying glass to see exactly where your code breaks inside the web page.