drogus/jawsm

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1102 stars · 22 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Jawsm is an experimental JavaScript to WebAssembly compiler written in Rust that produces standalone WASM binaries executable without bundling an interpreter. It aims to eventually support 100% of JavaScript by leveraging modern WASM proposals, though it currently passes only about 25% of the test262 suite.

Use cases

• compile javascript to a standalone wasm binary
• run javascript code inside a wasm runtime without an interpreter
• write wasm scenarios in javascript instead of rust
• reduce wasm binary size compared to embedding a js interpreter
• compile js to wasm targeting wasip2
• experiment with compiling javascript using modern wasm proposals

When to choose

• you need small, standalone WASM binaries from JavaScript source without shipping an interpreter
• you're writing WASM scenarios (e.g. for Crows) and prefer JavaScript over Rust
• you want to experiment with cutting-edge WASM proposals like WASIp2
• you can tolerate missing language features and incomplete builtins

When to avoid

• you need production-ready, spec-compliant JavaScript compilation today
• your code relies on RegExp, BigInt arithmetic, or most builtin methods
• you need binaries portable across many WASM runtimes
• you need a stable, well-supported toolchain for a real project

Facets

cli-tool · maturity experimental

compiler interpreter developer-tools compilers programming-languages web-development developer-tools wasm rust cross-platform javascript-to-wasm webassembly wasm-proposals wasi test262 standalone-wasm-binary no-interpreter

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markdown · JSON · MCP: product_card(name="drogus/jawsm")