WebAssembly Patterns

Practical reference for compiling Rust to WebAssembly, integrating with JavaScript, and deploying to production.

When to Activate

• Compiling Rust code to WebAssembly (browser or server-side)
• Setting up wasm-pack for JS/TS integration
• Exposing Rust functions to JavaScript via wasm-bindgen
• Running WebAssembly in non-browser environments (WASI)
• Optimizing WASM binary size and performance
• Offloading CPU-intensive computation (parsing, encoding, crypto) from JavaScript to a WASM Web Worker
• Defining language-agnostic component interfaces using the WIT format and WebAssembly Component Model

Quick Start — wasm-pack