Rust and WebAssembly Training

Bring Rust's performance and safety to the browser and beyond with this focused 2-day training. Learn to compile Rust to WebAssembly, bridge the gap between Rust and JavaScript with wasm-bindgen, and build high-performance modules for web applications, serverless edge functions, and plugin systems. This course covers the complete workflow from writing Rust code to shipping optimized Wasm binaries.

Training Details

Duration	2 days (16 hours)
Level	Intermediate
Delivery	In-person, Live online, Hybrid
Certification	N/A

Who Is This For?

• Rust developers looking to target the browser and edge platforms
• Frontend developers wanting to add Rust-powered performance modules
• Full-stack developers building isomorphic Rust/JavaScript applications
• Teams evaluating WebAssembly for compute-intensive browser features
• Developers building plugin systems or sandboxed execution environments

Learning Outcomes

After completing this training, participants will be able to:

• Compile Rust to WebAssembly using wasm-pack
• Bridge Rust and JavaScript with wasm-bindgen and js-sys
• Manipulate the DOM and call Web APIs from Rust
• Optimize Wasm binary size and runtime performance
• Build and publish reusable Wasm packages to npm
• Deploy Wasm modules to edge runtimes and serverless platforms

Detailed Agenda

Day 1: Rust to WebAssembly Fundamentals

Module 1: WebAssembly Foundations

• What WebAssembly is and how it runs in the browser
• Wasm module structure: memory, tables, imports, exports
• The Rust-to-Wasm compilation pipeline
• Hands-on: Compile and run your first Rust Wasm module

Module 2: wasm-bindgen and JavaScript Interop

• The wasm-bindgen bridge and how it works
• Passing strings, numbers, and complex types across the boundary
• js-sys and web-sys for accessing JavaScript and Web APIs
• Hands-on: Build a Rust module that interacts with JavaScript objects

Module 3: DOM Manipulation and Web APIs

• Accessing the DOM from Rust with web-sys
• Event listeners and callbacks
• Fetch API and async Wasm
• Hands-on: Build an interactive web component powered by Rust

Module 4: Building and Packaging with wasm-pack

• wasm-pack build targets (bundler, web, nodejs)
• Publishing Wasm packages to npm
• Integrating with webpack, Vite, and other bundlers
• Hands-on: Package and publish a Wasm module

Day 2: Advanced Patterns and Production Deployment

Module 5: Performance Optimization

• Binary size reduction (wasm-opt, LTO, strip)
• Memory management and avoiding allocator overhead
• Profiling Wasm execution in browser DevTools
• Hands-on: Optimize a Wasm module from 500KB to under 50KB

Module 6: Shared Memory and Web Workers

• SharedArrayBuffer and atomics
• Running Wasm in Web Workers for parallel computation
• wasm-bindgen-rayon for parallel iterators
• Hands-on: Parallelize a compute-heavy task with Web Workers

Module 7: Wasm Beyond the Browser

• WASI (WebAssembly System Interface)
• Running Wasm on edge platforms (Cloudflare Workers, Fastly Compute)
• Wasm as a plugin system and sandboxed execution
• Hands-on: Deploy a Rust Wasm function to an edge runtime

Module 8: Full Application Architecture

• Yew and Leptos for Rust-native frontend frameworks
• Server-side rendering with Wasm
• Testing Wasm modules with wasm-bindgen-test
• Hands-on: Build and test a complete Rust+Wasm web application

Prerequisites

• Completion of Rust Fundamentals or equivalent experience
• Understanding of ownership, borrowing, and basic async concepts
• Familiarity with JavaScript and basic web development
• Experience with npm and a JavaScript bundler is helpful

Delivery Formats

Format	Description
In-Person	On-site at your company's location, hands-on with direct interaction
Live Online	Interactive virtual sessions with screen sharing and real-time labs
Hybrid	Combination of on-site and remote sessions, flexible scheduling

All formats include hands-on labs, course materials, and post-training support.