JavaScript packages

Simple and complete React Native testing utilities that encourage good testing practices.

Node.js JSON replacement which handles 64-bit integers and arbitrary-precision decimals.

OpenTelemetry Host Metrics instrumentation for Node.js

A Karma plugin. Launcher for Chrome and Chrome Canary.

Image structural similarity (SSIM). In TypeScript/JavaScript. For browser/server.

Simple slim progress bars

Library to work against complex domain names, subdomains and URIs. Only contains ICANN section.

Take care of your `spawn()`

Matrix manipulation and computation library

Karma plugin for inline sourcemap support

Compile time `with` for strict mode JavaScript

Next tick shim that prefers process.nextTick over queueMicrotask for compat

yet another zip library for node

<!-- Links here are NOT rewritten on publish. Any link to another file in this repo must be an absolute GitHub URL rooted at: https://github.com/fullcalendar/temporal-polyfill/blob/main/ (use /tree/main/ instead of /blob/main/ when linking a dir

A regular expression for file paths that contain a `node_modules` folder.

Utilities for PostCSS plugins

ES Proposal spec-compliant shim for AggregateError

Maintain and search through a sorted array using some low level functions

Publish multiple editions for your JavaScript packages consistently and easily (e.g. source edition, esnext edition, es2015 edition)

🦄 Tailwindcss first-class variant API

Reliably get the terminal window size (columns & rows)

Development-only error handler middleware

Middleware to destroy caching

hast utility to check if a link element is “Body OK”

Detect if code is running in an AI agent or automated development environment

Discord API typings that are kept up to date for use in bot library creation.

Check if a string is a valid JavaScript expression

Utilities to generate JavaScript code.

cross-platform masked or hidden prompt

Growl unobtrusive notifications

The pug lexer (takes a string and converts it to an array of tokens)

hast utility to check if a node is phrasing content

Find files simply. Walks a directory tree emitting events based on what it finds. Presents a familiar callback/emitter/a+sync interface. Walk a tree of any depth.

converts a JS object into a nice and readable tree structure for the console

Formatter for the JavaScript Oxidation Compiler

A cron-like and not-cron-like job scheduler for Node.

JSX support for Acorn Walk

JSON.Stringify as a readable stream

Normalize the API of any jstransformer

Right To Left conversion for CSS in JS objects

Get the OS/Distribution name of the environment you are working on

node-postgres for serverless environments from neon.com

[Node.js](https://nodejs.org) + [Gjs](https://gjs.guide/) + [Deno](https://deno.land/) module that returns the current script dirname and filename. Similar to `__dirname` and `__filename` but also works in CommonJs and ES modules.

generates a cryptographically strong random uid

Detect whether a CLI is running inside a sandboxed environment

Fastest 5KB JS implementation of ed25519 EDDSA signatures compliant with RFC8032, FIPS 186-5 & ZIP215

A CLI for running apps on iOS/Android devices and simulators/emulators

Smoking hot React Notifications. Lightweight, customizable and beautiful by default.

PostCSS plugin to use CSS Modules everywhere

Create components whose prop changes map to a global side effect