JavaScript packages

Saga middleware for Redux to handle Side Effects

Returns true if a file path does not contain any invalid characters.

This package is no longer supported and has been deprecated. To avoid malicious use, npm is hanging on to the package name.

Client for Contentful's Content Management API

A package that provides 'Sign in with Apple' capability for Expo and React Native apps.

rollup-plugin-node-polyfills ===

ECMAScript 6 (Harmony) compatibility shims for legacy JavaScript engines

Base driver class for Appium drivers

A robust & optimized `String.fromCodePoint` polyfill, based on the ECMAScript 6 specification.

JSON scalar types for GraphQL.js

CSpell Config library

The official Node.js client library for Gel

A simple asynchronous tool

Email authentication library for Node.js

A JSON to CSV and CSV to JSON converter that natively supports sub-documents and auto-generates the CSV heading.

Find files or directories by name

Find the root directory of a Node.js project or npm package

Database to mime-format based on content-type header and content

[](https://travis-ci.org/auth0/node-xml-encryption)

The custom `sort` method (mobile-first / desktop-first) of CSS media queries for `postcss-sort-media-queries`, `css-mqpacker` or `pleeease` (which uses css-mqpacker) or, perhaps, something else ))

Injects a fake HTTP request/response into a node HTTP server

A Node.js library for interacting with the Vercel Queue Service API

Mock infrastructure for AI application testing — point your SDK at one local port and every provider, protocol, and service answers deterministically.

A code coverage tool to generate native V8 reports or Istanbul reports.

Headless CLI client for the Agent Client Protocol (ACP) — talk to coding agents from the command line

Build real-time applications powered by [Durable Objects](https://developers.cloudflare.com/durable-objects/), inspired by [PartyKit](https://www.partykit.io/).

How smooth scroll should be

A document path library for Node

Type definition package for textlint

Self-host the Roboto font in a neatly bundled NPM package.

Martinez polygon clipping algorithm, does boolean operation on polygons (multipolygons, polygons with holes etc): intersection, union, difference, xor

Wrappers for built-in fetch() enabling killswitch, logging, concurrency limit and other features

Utils for string compression and decompression with multiple strategies for Node.js and browser

Encode/decode circular structures for converting to and from JSON.

⚡️ Speed up your Webpack build with esbuild

Proj4js is a JavaScript library to transform point coordinates from one coordinate system to another, including datum transformations.

ESLint plugin for Svelte using AST

React Native bindings for Lottie

A lightweight, zero-dependency utility for rendering formatted grids/tables in the Node.js console

An addon for [xterm.js](https://github.com/xtermjs/xterm.js) that enables a WebGL2-based renderer. This addon requires xterm.js v4+.

Allow parsing of import()

Remove a UTF8 BOM at the start of the stream.

Apply boolean polygon clipping operations (intersection, union, difference, xor) to your Polygons & MultiPolygons.

A splay tree typescript library

Custom Vitest matcher for testing accessibility with aXe. Forked from jest-axe.

A well tested, feature rich Firebase implementation for React Native, supporting iOS & Android. Individual module support for Admob, Analytics, Auth, Crash Reporting, Cloud Firestore, Database, Dynamic Links, Functions, Messaging (FCM), Remote Config, Sto

Media queries in react for responsive design

Serve Swagger-ui for Fastify

A performant and standard (Bluebird) library that registers a node-style callback on a promise

React Server Components (RSC) support for Vite.