Determine if a value is an ES6 Symbol or not.
Is this value negative zero? === will lie to you
Get and robustly cache all JS language-level intrinsics at first require time
Media Type Database
A tool set for CSS: fast detailed parser (CSS → AST), walker (AST traversal), generator (AST → CSS) and lexer (validation and matching) based on specs and browser implementations
JSON for Humans
Improved typeof detection for node.js and the browser.
The fastest directory crawler & globbing alternative to glob, fast-glob, & tiny-glob. Crawls 1m files in < 1s
Determine if the JS environment has `Symbol.toStringTag` support. Supports spec, or shams.
HTTP status utility
Human-friendly process signals
Define a data property on an object. Will fall back to assignment in an engine without descriptors.
TypeScript definitions for @babel/core
2KB immutable date time library alternative to Moment.js with the same modern API
DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. It's written in JavaScript and works in all modern browsers (Safari, Opera (15+), Internet Explorer (10+), Firefox and Chrome - as well as almost anything else usin
ES Math-related intrinsics and helpers, robustly cached.
Simple key-value storage with support for multiple backends
Store information about any JS value in a side channel, using a Map
Reactive Extensions for modern JavaScript
Execute a callback when a request closes, finishes, or errors
Node.js final http responder
Performant, flexible and extensible forms library for React Hooks
Determine if the current node version supports the `--preserve-symlinks` flag.
Give a regex, get a robust predicate function that tests it against a string.