Syntax highlighting with language autodetection.

Easily add ANSI colors to your text and symbols in the terminal. A faster drop-in replacement for chalk, kleur and turbocolor (without the dependencies and rendering bugs).

Detect Browser, Engine, OS, CPU, and Device type/model from User-Agent & Client Hints data. Supports browser & node.js environment

Is this value a JS Map? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Next-generation ES module bundler

style loader module for webpack

Accessibility engine for automated Web UI testing

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

Determine if the JS environment has Symbol support. Supports spec, or shams.

A light-weight module that brings Fetch API to node.js

Define multiple non-enumerable properties at once. Uses `Object.defineProperty` when available; falls back to standard assignment in older engines.

Packs ECMAScript/CommonJs/AMD modules for the browser. Allows you to split your codebase into multiple bundles, which can be loaded on demand. Supports loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.

Returns an array of Typed Array names that are available in the current environment

Hooks for managing, caching and syncing asynchronous and remote data in React

TypeScript scope analyser for ESLint

Determine if the JS environment has `Symbol.toStringTag` support. Supports spec, or shams.

Perform async work synchronously in Node.js using `worker_threads` with first-class TypeScript support.

Does the environment have full property descriptor support? Handles IE 8's broken defineProperty/gOPD.

A pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module.

A Jest transformer with source map support that lets you use Jest to test projects written in TypeScript