trunk

trunk command [--release] [options]

Trunk is a build tool for Rust WebAssembly applications that handles compilation, bundling, and serving. It compiles Rust code to WebAssembly, processes assets like CSS and JavaScript, and generates the HTML and JavaScript glue code needed to run WASM modules in the browser.
The development server provides hot reloading, automatically rebuilding and refreshing the browser when source files change. Release builds apply optimizations including WASM size reduction for production deployment.
Trunk integrates with wasm-bindgen for JavaScript interop and works with frameworks like Yew, Leptos, and Seed. Configuration is managed through a Trunk.toml file in the project root.

build

Build the project, compiling Rust to WASM and bundling assets.

Start development server with hot reloading.

Watch for file changes and rebuild automatically.

Remove build artifacts (dist directory).

Enable release optimizations including WASM size reduction.

Public URL prefix for asset paths.

Port for the dev server (default: 8080).

Address to bind the dev server to.

Proxy requests to a backend server. The URI path of the URL determines the proxy path.

Alternative URI on which to listen for proxy requests.

Trunk.toml

Project configuration file specifying build options, proxy settings, and asset pipeline rules.

Rust/WASM specific. wasm-bindgen based. Trunk.toml config.

Trunk was created for building and bundling Rust WebAssembly applications.

wasm-pack(1), cargo(1)