Jco

lastmod 2026-07-15created 2026-07-151 edits

A JavaScript toolchain for working with WebAssembly components

About

• A fully native JS toolchain for working with WebAssembly components in JavaScript
• 'Transpiling' Wasm component binaries into ES modules that can run in any JS environment
• WASI Preview2 support: Node.js (stabilizing) and browsers (experimental)
• Component builds of Wasm Tools helpers: usable as a library or CLI commands in native JS environments
• Running and serving commands like Wasmtime
• The "Componentize" command makes it easy to create components written in JavaScript (a wrapper around ComponentizeJS)

See also

• WebAssembly

Favorite site

• jco - A JavaScript toolchain for working with WebAssembly components | GeekNews
• Github - bytecodealliance/jco