Standard library

Terminal string styling done right

ES Math-related intrinsics and helpers, robustly cached.

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

TypeScript definitions for react

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

Determine if a function is a native async function.

Get and robustly cache all JS language-level intrinsics at first require time

TypeScript-first schema declaration and validation library with static type inference

The fastest directory crawler & globbing alternative to glob, fast-glob, & tiny-glob. Crawls 1m files in < 1s

HTTP status utility

Implementation of Function.prototype.bind

TypeScript scope analyser for ESLint

Additional JSON-Schema keywords for Ajv JSON validator

Create your next immutable state by mutating the current one

Utilities for working with TypeScript + ESLint together

Tool for transforming styles with JS plugins

Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js

An ESnext spec-compliant iterator helpers shim/polyfill/replacement that works as far down as ES3.

resolve like require.resolve() on behalf of files asynchronously and synchronously