staltz/callbag-basics

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1652 stars · 43 forks observed · 2026-08-28

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

A tiny and fast JavaScript library implementing the callbag spec, providing basic factories and operators for reactive stream and iterable programming. The same operators work for both push-based event streams and pull-based iterables, with a modular design where everything is a standalone utility function.

Use cases

• handle click events reactively in the browser
• process async event streams with map/filter/take operators
• transform iterables with the same operators used for streams
• build lightweight reactive apps without RxJS bundle size
• flatten promises and events into unified streams
• create interval-based tick streams for polling

When to choose

• you want a tiny (~7kB) alternative to RxJS or xstream
• you need one operator set that works for both observables and iterables
• you prefer a modular, spec-based design with no core library
• performance in stream processing is critical

When to avoid

• you need a batteries-included reactive library with schedulers and subjects
• your team already knows RxJS and ecosystem tooling matters more than size
• you need extensive documentation and community support
• you require frequent updates or long-term active maintenance

Facets

library · maturity maintenance

middleware streaming web-development frontend developer-tools browser reactive-programming observables iterables callbag functional-programming streams nodejs javascript

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