trynova/nova

Health v2 · maintenance only

Flags: prerelease_only

Adoption not part of the score

1942 stars · 79 forks observed · 2026-08-28

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

Nova is a JavaScript (ECMAScript) engine written in Rust, focused on being lightweight, modular, and easy to embed, with a data-oriented design that follows the ECMAScript specification's structure. It is exposed as a Rust library so host applications can serve as JavaScript runtimes, and it currently passes roughly 80% of the Test262 suite.

Use cases

• embed a JavaScript engine in a Rust application
• run one-off JavaScript scripts from Rust
• build a custom JavaScript runtime
• experiment with data-oriented language engine design
• evaluate alternative JS engines to V8 or Boa
• run strictly-typed TypeScript-compiled JavaScript with a small memory footprint

When to choose

• you need an embeddable JS engine with a small memory footprint
• your project is in Rust and you want idiomatic Rust APIs for hosting JS
• you want a modular engine whose architecture mirrors the ECMAScript spec
• you're researching or learning how JS engines are built

When to avoid

• you need top-tier interpreter or JIT performance today
• you need full ECMAScript compliance (Test262 pass rate is ~80%)
• you need WebAssembly support (planned but not yet available)
• you need production-grade LTS guarantees

Facets

library · maturity active

interpreter parser compiler programming-languages developer-tools web-development rust cross-platform javascript-engine ecmascript data-oriented-design embeddable wasm-future

Member repositories

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