unicode-id-start

v1.4.0 Stable

Determine whether characters have the ID_Start or ID_Continue properties according to Unicode Standard Annex #31

(MIT OR Apache-2.0) AND Unicode-3.0 Edition 2018 MSRV 1.31

Development tools::Procedural macro helpers No standard library No standard library::No dynamic allocation #unicode#id

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Quick Verdict

✓Actively maintained (updated 13d ago)
✓Stable API (1.x for 4+ years)
✓Trusted by 526 crates
✓Permissive license ((MIT OR Apache-2.0) AND Unicode-3.0)

Security

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Downloads

28.8M

Dependents

526

Releases

Size

48KB

Deep Insights

📊

Stable downloads

1.9M downloads in the last 30 days (64.4K/day). Volume is roughly flat compared to the previous period.

🔗

Moderate adoption

526 crates depend on unicode-id-start. Reasonable ecosystem adoption, though not yet a core dependency.

👤

Prolific maintainer

The primary maintainer publishes 146 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.

✅

Stable for 4+ years

The API has been stable (1.x) for over 4 years with 11 releases. This level of maturity means you can depend on it without worrying about breaking changes.

📐

Compact crate

At 47KB, unicode-id-start is lightweight. Small crate size correlates with focused, well-scoped functionality.

🌟

Used by top crates

Notable dependents include sourcemap, swc_ecma_ast, oxc_syntax, oxc_regular_expression, swc_sourcemap. When high-quality crates choose unicode-id-start, it's a strong quality signal.