waker-fn

4.4M downloads in the last 30 days (145.3K/day), up 4% from the previous period.

529 crates depend on waker-fn. Reasonable ecosystem adoption, though not yet a core dependency.

The primary maintainer publishes 118 crates. This suggests deep Rust expertise and long-term commitment to the ecosystem.

The API has been stable (1.x) for over 5 years with 4 releases. This level of maturity means you can depend on it without worrying about breaking changes.

Only 1 direct dependencies. Lean dependency tree means faster builds and lower supply chain risk.

At 7KB, waker-fn is lightweight. Small crate size correlates with focused, well-scoped functionality.

Notable dependents include event-listener, futures-lite, async-lock, flume, isahc. When high-quality crates choose waker-fn, it's a strong quality signal.