eslint

Tiny millisecond conversion utility

the complete solution for node.js command-line programs

Media Type Database

The ultimate javascript content-type utility.

JavaScript parser and stringifier for YAML

A querystring parser that supports nesting and arrays, with a depth limit

HTTP status utility

Modify strings, generate sourcemaps

`Object.defineProperty`, but not IE 8's broken one.

Create HTTP error objects

Store information about any JS value in a side channel. Uses WeakMap if available.

An AST-based pattern checker for JavaScript.

Deprecate all the things

Encode a URL to a percent-encoded form, excluding already-encoded sequences

Node.js final http responder

Higher-level content negotiation

Node.js body parsing middleware

Better streaming static file server with Range and conditional-GET support

Infer the content-type of a request.

Serve static files

Programmatic access to the ARIA specification

Execute a callback when a request closes, finishes, or errors

HTTP response freshness testing

Fast, unopinionated, minimalist web framework

An Esprima-compatible JavaScript parser built on Acorn

A query library for ECMAScript AST using a CSS selector like query language.

A JavaScript parser

`Object.defineProperty`, but not IE 8's broken one.

Determine whether an AST node is a reference

WebAssembly text format printer

WebAssembly binary format parser

AST utils for webassemblyjs

A robust, ES3 compatible, "has own property" predicate.

Protocol Buffers for ECMAScript. The only JavaScript Protobuf library that is fully-compliant with Protobuf conformance tests.

Tomorrow's ECMAScript modules today!

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

TypeScript definitions for node

Prettier is an opinionated code formatter

Next generation testing framework powered by Vite

BDD/TDD assertion library for node.js and the browser. Test framework agnostic.

Delightful JavaScript Testing.

The semantic version parser used by npm.

React is a JavaScript library for building user interfaces.

V8 coverage provider for Vitest

An extremely fast JavaScript and CSS bundler and minifier.

🔎 A simple, tiny and lightweight benchmarking library!

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.

TypeScript definitions for chai