yargs the modern, pirate-themed, successor to optimist.

Which kind of Collection (Map, Set, WeakMap, WeakSet) is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.

destroy a stream if possible

Parse, validate, manipulate, and display dates

An ESLint custom parser which leverages TypeScript ESTree

Standalone TypeScript project service wrapper for linting.

ECMAScript spec-compliant polyfill/shim for `globalThis`

ES6 spec-compliant RegExp.prototype.flags shim.

A robust, performance-focused and full-featured Redis client for Node.js.

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

Deeply merge 2 or more objects respecting type information.

Fast, disk space efficient package manager

A parser that converts TypeScript source code into an ESTree compatible form

javascript standard data structure library which benchmark against C++ STL

ES6 spec-compliant Object.assign shim. From https://github.com/es-shims/es6-shim

Utilities for collecting TSConfigs for linting scenarios.

An ESnext spec-compliant `Array.prototype.findLastIndex` shim/polyfill/replacement that works as far down as ES3.

An ES7/ES2016 spec-compliant `Array.prototype.includes` shim/polyfill/replacement that works as far down as ES3.

Simple yet powerful framework for building command-line apps.

webpack Validation Utils