Running JavaScript, Python, and Ruby in WebAssembly
Talkat Cloud Native Wasm Day Europe 2022 · on Monday, 2022-05-16· at 11:05· Pavilion 3, Room F | Level 2 | Central Forum, Feria Valencia, Spain + Live Stream·
summary
QuickJS compiled to Wasm runs ES6 modules and, with a bundler, CommonJS npm packages; combining that with Rust-written host extensions exposes high-performance Rust APIs (networking, fetch, TensorFlow inference) to JS and enables streaming SSR for React 18 at the edge, replacing Node/Deno containers. QuickJS+Wasm stays tiny (under ~1 MB) versus V8 ~40 MB. Python via RustPython is runnable but C extensions remain a blocker; CRuby compiles to Wasm for pure Ruby execution. WasmEdge adds nonblocking sockets and native extensions.
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chapters (11)
- 0:00Introduction to WASM
- 3:43Why Scripting in WASM
- 5:24Key WASM Use Cases
- 7:56WASM on the Server
- 10:51Running JS with QuickJS
- 14:03Supporting NPM Modules
- 15:43Rust and JS Interaction
- 18:28Advanced SDK Extensions
- 21:27Server-Side Rendering
- 23:11Performance Comparisons
- 25:45Python and Ruby Support
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