JSPM

Immutability helpers with fast reads and acceptable writes

mutate a copy of data without changing the original source

ESLint rules to promote functional programming in TypeScript.

A JavaScript library for efficient immutable updates

Modify deep object properties without modifying the original object (immutability). Works great with React and Redux.

Utilities for treating frozen JavaScript objects as persistent immutable collections.

Redux middleware that prevents state from being mutated anywhere in the app

ESLint plugin to disable all mutation in JavaScript.

Detects mutations

A hook to use Mutative as a React hook to efficient update react state immutable with mutable way

React PureRenderMixin replacement for immutable-js library

A very fast and lightweight Typescript library to create immutable states with a mutable syntax

A yet another tuple implementation

A CSS linter for immutable selectors.

Type-safe immutability helpers for simple objects and arrays

Make setState easily and immutably

Define object schema's for validation, and construction of immutable objects

Decorator Helpers

A JavaScript library for efficient immutable updates

useS: the definitive React hook for local and global state — effortless, zero boilerplate, one line, superpowers included

ESLint plugin to guard against unexpected mutations of objects in javascript

A TypeScript decorator library for deep cloning method arguments to prevent side effects, enhancing immutability in class methods.

Creates a diff between 2 javascript objects / variables, in a format that is compatible with immutability-helper

Mutate a copy of data without changing the original source. Inspired by immutability-helper.

A immutability library which requires minimum overhead per call

ESLint/TSLint Sharable Config

Converts ES6 classes into classes with memoized getters

JS object immutability helper

Simple immutability helpers for javascript apps

immutable objects that pretend to be mutable

Javascript Utilities to handle arrays and objects with immutability in mind.

A functional preset for TSLint with some crazy defaults.

An utterly minimal immutability library in the spirit of immer

polyn is a collection of Node and browser compatible JavaScript utilities that focus on polymorphism

An opiniated way to use ReactJS in a functional way in plain old Javascript, inspired by popular Clojurescript wrappers like Om

class, function, and object freezer

Client-side immutability helper

Recursive proxy-object creation.

Reselect and re-reselect alternative. Smaller, faster, greater flexibility, and better interface.

Pure string:val storage, using structural sharing

json-serialisable general-purpose reducer

Pub/Sub pattern with State Management

Pacote para fazer loops sem o uso de for

Simplified state machines

Javascript Library to traverse nested structures and modify in place without mutating data

Package made to work with deep comparisons of complex data structures

Vamoot creates simple immutable objects

Provides functions to make mutable objects immutable ('freeze'), and immutable objects mutable ('thaw').

Enforces state immutability on react components

Performs Object.seal recursively on the functions and objects

Simple yet powerful json validator

Immutable data structures for Ember apps

<p align="center"> <a href="https://github.com/DigitalGlobe/jetset"><img src="https://cdn.rawgit.com/DigitalGlobe/jetset/074ede86/examples/public/jetset.png?raw=true" /></a> </p>

A utility library providing common array manipulations and React hooks.

High Order Component for efficient partial functions in reactjs callbacks

Just a small function to freeze the entire object avoiding mutability

React PureRenderMixin replacement for immutable-js library

Small utility for deeply freezing objects in JavaScript.

Use immutable state with inbuilt time travel. Super-charged use-state with immer capabilities.

Immutable generic type.

Manage immutable state with these helpers for Objects and Arrays

Reverse immer.

A value library for Javascript - makes immutability simple to work with.

Easily convert deep Objects and Arrays to Records and Tuples.

A hook to use Mutative as a React hook to efficient update react state immutable with mutable way

A port of the PHP bingo-functional library

Like immutability-helper, at compile time

An object immutability helper

Immutability skinable component

Inductive programming for JavaScript

Immutable request properties for hapi

Miniature ~2kb library that brings immutability to existing prototype functions employing the principle of least astonishment.

Non-mutating operations on arrays (immutably extension).

JavaScript objects as they should be.

1KB immutable magic for React 🪄

A functional lens framework for JavaScript

[](https://badge.fury.io/js/immutability) [](https://travis-ci.org/janryWang/immutability) [![Coverage Status](https://coveralls.io/r

Mirror of Facebook's update() immutability helper

React PureRenderMixin replacement for immutable-js library

class freezer

mutate a copy of data without changing the original source

Lightweight data framework implementing eventual immutability paradigm

Immutability helper

ESLint plugin for Angular Immutability

Non-mutating operations on data structures.

A JavaScript library for efficient immutable updates

Yet Another Lodash Mixins. Mixins i use in my pet-projects

Immutability helpers with fast reads and acceptable writes

A lightweight immutability library compatible with JS built-in collections.

A tiny collection of functions to be used in conjunction with normalizr and redux-undo to bridge the "delete" gap of normalizr.

Modify an object using query without mutating the original object.

Modify deep object properties without modifying the original object (immutability). Works great with React and Redux.

Powerful and versatile library for working with objects in TypeScript that provides a wide range of utility functions for deep cloning, property manipulation, filtering, mapping and more

State management with Immer and Computed Properties

Compile-time and runtime immutability for Angular signals

Natural and type-safe query to mutate a copy of data without changing the original source

This package is used to update objects that are immutable. Its main usage is in updating complex react states

Deep immutable, Lightweight Enumerable with superpowers

sanitizing reducer based on a schema definition

Store your items of data in a store powered by immutability

Utility module for managing state changes in js frameworks such as fluxible or redux

Very simple helper functions for working with immutable data structures.

Getter for non-mutating operations on data structures.

Package made to work Monad Maybe

change your objects innner state safely using immutable objects

Immutable data library

Immuton is a collection of utility functions for working with immutable values, improving the change detection and memory footprint in your app

mutate a copy of data without changing the original source

A collection of methods to mutate objects and arrays without modifying the source.

Refined State Management.

mutate a copy of data without changing the original source

Immutable Object Operators

ESLint plugin to disable all mutation in JavaScript.

A micro library helping to keep the context in nested promises and callbacks

Make setState easily and immutably

mutate a copy of data without changing the original source

Javascript immutability helper function

mutate a copy of data without changing the original source

ESLint plugin to disable all mutation in JavaScript.

Immerable Record is an immutable record data structure API, which uses pure, vanilla JavaScript objects for deep nesting