trynova/nova
Some data may be outdated — see provenance labels.
JS engine lolz observed · 2026-10-01
Health v2 · maintenance only
65/100
- Activity 94
- Release rhythm 8
- Longevity 100
Flags: prerelease_only
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: n/a
- age_days: 1518
- days_rel: 427
- days_push: 41
- n_releases_24m: 1
Adoption not part of the score
1952 stars · 81 forks observed · 2026-10-01
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
2 sources
- readme: https://github.com/trynova/nova · fetched 2026-10-01 · 9a6a4e921e71
- homepage: https://trynova.dev/ · fetched 2026-08-29 · bc64bb18419e
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| trynova/nova | main | 65 |
For agents
Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem