A lightweight `updateIn` for immutable objects.

Treat const declarations as immutable

Small, performant & immutable iteration utilities for Arrays and Objects

2KB immutable date time library alternative to Moment.js with the same modern API

A collection of merger functions for seamless-immutable.

Lightweight immutable library used by Orbit.js.

Immutable Sorted Data Collections

Lightweight immutable helper that allows you to continue working with Plain JavaScript Objects

Immutable Map

TypeScript definitions for react-immutable-proptypes

A collection of functions to perform immutable operations on plain JavaScript objects

A template for creating immutable classes

Use seamless-immutable with redux-persist v5

A functional, immutable Finite State Machine library

An immutable drop-in replacement for JavaScript's Date type

library for immutable notebook operations

Fast purely functional immutable lists.

An efficient memoizer for functions that only receive immutable arguments. Ideal for Redux and similar environments.

Primitive for rectifying immutable values and dealing with immutability in Solid.

Update normal plain javascript object, immutable style. Simlar to how immutable.js, seamless-immutable etc does it but a lot smaller and simpler.