Jawsm is an experimental JavaScript-to-WebAssembly compiler written in Rust that aims to transform standard JavaScript code into standalone WebAssembly binaries that can execute without relying on an embedded interpreter. Unlike traditional approaches that require bundling a JavaScript engine or using a restricted subset of the language, Jawsm seeks to compile full JavaScript directly into WebAssembly, leveraging modern Wasm capabilities to execute code efficiently. The project is still in early development, with many JavaScript features and built-in objects not yet fully implemented, but its long-term goal is to achieve near-complete compatibility with the language. Its design is motivated by the desire to reduce runtime overhead and binary size compared to interpreter-based solutions, especially in environments where performance and portability are critical.

Features

  • JavaScript to WebAssembly compilation producing standalone binaries
  • Written in Rust with focus on performance and portability
  • Eliminates need for embedded JavaScript interpreters
  • Experimental support for modern JavaScript features
  • Alternative compilation strategy compared to similar tools
  • Designed for lightweight execution in Wasm runtimes

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License

Apache License V2.0

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Additional Project Details

Programming Language

Rust

Related Categories

Rust Software Development Software

Registered

2026-04-08