HTTP status utility
Various operations on Uint8Array data
An implementation of the CSSStyleDeclaration class from the CSS Object Model specification
Selectors decision tree - choose matching selectors, fast
Source maps support for istanbul
Fast JavaScript/TypeScript bundler in Rust with Rollup-compatible API.
A simpler (and smaller) rewrite of Google Android's libphonenumber library in javascript
the path module from node core for browsers
Run AppleScript and get the result
React component to render markdown
SHA256 wrapper for browsers that prefers `window.crypto.subtle` but will fall back to a pure JS implementation in @aws-crypto/sha256-js to provide a consistent interface for SHA256.
A streamlined Node.js command executor with real-time output streaming and process management capabilities. Use showhelp function to check how to use the package.
FFmpeg presets and a declarative builder for CMAF + HLS: multi‑rung ladders, multi‑audio, trickplay, safe segment sizing, and clean `var_stream_map`. The library produces FFmpeg argument arrays only — no manual folder or manifest creation — and works in b
Check which JavaScript environment your code is running in at runtime: browser, Node.js, Bun, etc
Persistent ordered mapping from strings
A socket implementation that can run on Cloudflare Workers using native TCP connections.
Helper functions around Function call/apply/bind, for use in `call-bind`
Simple “Least Recently Used” (LRU) cache
Symbol.observable ponyfill
The Promise class is a TypeScript-based implementation that provides a flexible and customizable approach to handling asynchronous operations through promise-like functionality.
A library to make errors.
Give me a string and I'll tell you if it's a valid npm package name
A generational pseudo-LRU cache with strict maximum size limits.
Native Access to MacOS FSEvents