cognitect-labs/transducers-js

Health v2 · maintenance only

Flags: no_releases archived

Adoption not part of the score

1602 stars · 43 forks observed · 2026-08-28

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

A high-performance JavaScript implementation of transducers, composable algorithmic transformations decoupled from input and output sources. It lets you build map/filter/reduce pipelines that work over collections, streams, channels, and observables without intermediate aggregates.

Use cases

• compose map and filter transformations without intermediate arrays
• apply the same transformation pipeline to collections, streams, and observables
• efficiently transform large sequences in JavaScript
• build reusable data transformation pipelines
• reduce over iterables with composable transformers

When to choose

• you need composable, context-independent transformations in JavaScript
• you want transducer semantics matching Clojure's model
• you need a tiny (2K gzipped) dependency for data transformation

When to avoid

• you need an actively maintained library - it is explicitly unmaintained
• you only need simple array operations covered by native ES6 methods
• you want modern ESM/TypeScript support

Facets

library · maturity abandoned

serialization developer-tools browser cross-platform transducers functional-programming data-transformation unmaintained algorithms nodejs

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