bytecodealliance/javy
JS to WebAssembly toolchain observed · 2026-10-09
Health v2 · maintenance only
91/100
- Activity 98
- Release rhythm 76
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.
- gap_med: 38.5
- age_days: 2007
- days_rel: 82
- days_push: 13
- n_releases_24m: 15
Adoption not part of the score
2756 stars · 137 forks observed · 2026-10-09
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Javy is a JavaScript-to-WebAssembly toolchain that compiles JavaScript source into small Wasm modules executed in an embedded JS runtime. It ships as a Rust CLI and integrates with Wasm engines like Wasmtime.
Use cases
- compile javascript to webassembly
- run js in wasmtime
- build small wasm modules from javascript
- deploy javascript as wasm serverless functions
- execute javascript in a wasm sandbox
- create wasm binaries from node scripts
When to choose
- you want to run JavaScript inside WebAssembly runtimes like Wasmtime or WASI environments
- you need tiny Wasm modules (1-16 KB with dynamic linking) for plugins or edge/serverless workloads
- you want sandboxed, portable execution of JS code
When to avoid
- you need full Node.js APIs or npm ecosystem compatibility at runtime
- you want browser-targeted JavaScript bundling rather than WASI Wasm output
- your project requires DOM or native module access
Facets
cli-tool · maturity active
compiler wasm cli interpreter build-tool developer-tools compilers web-development cross-platform cli wasm rust windows javascript webassembly quickjs wasm-toolchain serverless-wasm bytecode-alliance linux macos
2 sources
- readme: https://github.com/bytecodealliance/javy · fetched 2026-10-09 · 3ed0ea45f715
- registry_crates: https://crates.io/api/v1/crates/javy · fetched 2026-08-29 · 469655be9414
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| bytecodealliance/javy | main | 91 |
For agents
markdown · JSON · MCP: product_card(name="bytecodealliance/javy")
Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem