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Immutable collections and tools for TypeScript

Outer space

Boost your productivity

Offering many common and advanced collections out of the box, Rimbu allows you to focus on what you are actually trying to achieve.


Immutability made easy

Immutable data structures have a reputation of being hard to use. Rimbu provides an easy and consistent API that is easy to learn and use.

Batteries included

Rimbu has no external dependencies and is natively available for Web, Node.js, and Deno!