Top 10 TypeScript Immutable Projects

dinero.js

2 6,184 0.6 TypeScript

Create, calculate, and format money in JavaScript and TypeScript.
mutative

14 1,441 8.8 TypeScript

Efficient immutable updates, 2-6x faster than naive handcrafted reducer, and more than 10x faster than Immer.

Project mention: Mutative 1.0 – A New Era in Efficient Immutable Updates | news.ycombinator.com | 2024-01-31

The readme explains how Mutative achieves better performance over Immer: https://github.com/unadlib/mutative#readme

SurveyJS

surveyjs.io sponsored

Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
concent

7 1,288 9.7 TypeScript

A reactive atomic state engine for React like.

Project mention: Focusing on optimization, surpassing immer, limu finally reaches the top of immutable data performance | dev.to | 2024-01-06

helux A state engine that integrates atom, signal, and dependency tracking, and supports fine-grained response updates

optics-ts

3 678 8.3 TypeScript

Type-safe, ergonomic, polymorphic optics for TypeScript
pond

1 204 0.0 TypeScript

Immutable timeseries data structures built with Typescript (by esnet)
rimbu

1 124 8.8 TypeScript

Rimbu is a TypeScript library focused on immutable, performant, and type-safe collections and other tools.
riux

6 9 0.0 TypeScript

📦 Fully typed and immutable store made on top of Immer with mutation, action, subscription and validation!
InfluxDB

www.influxdata.com sponsored

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
persistent-ts

1 8 0.0 TypeScript

Persistent data structures for Typescript
enum-utils

1 8 5.7 TypeScript

Make enums more intuitive with immutable `Set` and `Map` interfaces!
cow-list

1 4 0.0 TypeScript

Copy-On-Write iterable list

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).