JSPM

Clone and modify a RegExp instance

event interceptors - like middleware for EventEmitter

Weapon regeX mutates regular expressions for use in mutation testing.

Mutate the filesystem behavior for tests.

A few reliable utils.

Remove or replace part of a string like `Array#splice`

Namespaces all rules found in a CSS file to make them only apply to a subset of the page.

Mutate the value when set some data

React Query hooks for Firebase Cloud Firestore

Plugin for providing a GraphQL client in Piral.

Transform object keys easily using whatever transform function

Like lodash's _.defaultsDeep, but with array preservation

Alter arguments and return values before and after a function is called

Mutates an array by filtering out elements in-place.

Create observables and map them to DOM elements. Massively inspired by hyperscript and observ-*. No virtual dom, just direct observable bindings. Unnecessary garbage collection is avoided by using mutable objects instead of blasting immutable junk all ove

Provides types and tools for editing `package.json` files

> Move element in a given array from one index to another ..with some extra > functions.

Invoke a function for each element in a collection and update the collection in-place.

A library of standard DOM mutations by Evolv AI.

Invoke a function for each element in a collection and update the collection in-place, iterating from right to left.

Add attributes and event-listeners to <slot> content

overloading javascript functions done easy

A immutability library which requires minimum overhead per call

Invoke a function for each element in a collection and update the collection in-place, iterating from right to left.

Fastest Array.filter alternative --- mutates original array!

Library of methods for maintaining immutable data structures

Object mutation pipelines for flow control

Invoke a function for each element in a collection and update the collection in-place.

mutates the source javascript object and replaces the contents with the passed js object

Shift color to fit within specific HSL bounds

easily mutate and validate json data

JSON-encoded operations on JSON documents

Agnostic tree morphing library.

n-ary tree mutation library.

A React hook for inspecting and mutating shared state without subscribing to render updates.

Recursively mutates files in a given directory.

Utility library for immutable objects management

coming soon

Renamed to "mutant".

Not fastest but powerful immutable helper

Function that inserts new items at a specified index in the array

Magical package to work with immutable Redux reducers.

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

Evolutionary algorithm framework and tutorial.

to replace redux,Provider value contain useActions which is to merge context state value and useActions return an immutable function collection called `actions`

Performs a deep mutation of an existing object to equal a new object

GraphQL client for React apps that don't need everything

Modify an object using query without mutating the original object.

query utility for mongodb

Simple library for deep merge of objects and other types (also for patch and immutable updates). Declarative operations to specific merge, for example to remove properties. Customize merging between specific types. Calculating diffs.

Transforms objects.

Perform mutation operations on text strings (or text files). Useful for (simple) automatic code refactorings f.ex in code generators

Lightweight URL parsing and manipulation library.

Implementations of ES2015 collections (Array, Set, Map, WeakSet, WeakMap) which emit an rxjs observable stream of changes

Easily add user-defined extensions into your react application

Reliably and recursively clone javascript objects

Useful React hooks written in Typescript

Allows to mutate the webpack configuration before is being used by @angular-devkit/build-angular:browser

DOM mutator for A/B experiments.

useState for Psychopaths

Generate and apply descriptions of changes between objects.

A React HOC for Apollo GraphQL mutation, provides loading & error as props.

A function to convert plain javascript object(usually deserialized from JSON) into some class instance

to replace redux,Provider value contain useActions which is to merge context state value and useActions return an immutable function collection called `actions`

Methods to mutate part of a falcor graph as if it was an array

helper library to remove boilplate code from reducers

Makeify is a utility to create objects with nested values

React Query hooks for Firebase Cloud Firestore

Mess with the properties of deeply nested objects.

<div align="center"> <a href="https://github.com/bkniffler/flowzilla"> <img alt="flowzilla" src="https://raw.githubusercontent.com/bkniffler/flowzilla/master/assets/logo.png" height="250px" /> </a> </div> <div align="center"> <strong>Create flex

Remove or replace part of a Buffer like Array#splice

Remove all non-number characters and return a number. '$1,234' → 1234

Swiss-army knife for observation of objects (Angular compatible)

javascript function to mutate every string in deep nested objects

CLI command ast parser manipulate program bash powershell generic agnostic.

JSON reshaping library w/ asynchronous support powered by RegEx. Create transform flows for JSON->JSON needs

Mutates object properties as specified by functions

React Query hooks for Firebase Cloud Firestore

Greatly simplifies vanilla javascript variable interactions, assertions, and mutations.

Observe mutations to a scalar, object or array in Angular

Scalable genetic algorithm cluster using Node.js and webSockets

a react library for fetch data fast and easy

React Query hooks for Firebase Cloud Firestore

React Query hooks for Firebase Cloud Firestore

Draw one random element from an array

React Query hooks for Firebase Cloud Firestore

Clone and modify a RegExp instance, including removing, prepending, appending & replacing the source

event interceptors - like middleware for EventEmitter

The amazing string mutator

Greatly simplifies vanilla javascript variable interactions, assertions, and mutations.

React Query hooks for Firebase Cloud Firestore

'flow' is a small JavaScript library containing some methods for organizing code with mutating functions in a particular way.