JavaScript packages

WebAssembly bindings to the Biome workspace API

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

Automatic font fallback based on font metrics

Convert any CSS unit to logical pixels ("px")

Generate TeamCity service messages.

Define a non-enumerable read-only property.

Open a URL via the operating system (http: in default browser, mailto: in mail client etc.

React hooks for Chakra components

The lodash method `_.toArray` exported as a module.

Define (or modify) an object property.

Create RSA Public Key PEM from Modulus and Exponent value in node.js

Remote procedure calls built on top of axon.

GraphicsMagick and ImageMagick for node.js

Canvas for Node.js with skia backend

Browser & Node.js builds of Binaryen, a compiler infrastructure and toolchain library for WebAssembly.

An in-place pre-processor for javascript files using C style pre-compile syntax to compose custom builds from npm-packages

Allow parsing of async generator functions

Inspect Broccoli nodes; thin wrapper around node.__broccoliGetInfo__()

High-level messaging & socket patterns implemented in pure js

Detects DOM element resizing

The lodash method `_.intersection` exported as a module.

Generate multiple mocha reports in a single mocha execution.

[json-rpc-engine](https://github.com/MetaMask/json-rpc-engine) middleware implementing ethereum filter methods. Backed by an [eth-block-tracker](https://github.com/MetaMask/eth-block-tracker) and web3 provider interface (`web3.currentProvider`).

Zero-dependency unicode-aware string tools

Modular and fast Promises implementation

All the types you need for your <head>

create temporary files and directories

Run Python scripts from Node.js with simple (but efficient) inter-process communication through stdio

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

Test if an object has a specified property.

Parse a GitHub URL for user/project@version

The modern build of lodash’s internal `createAssigner` as a module.

Option parser with generated usage and commands

Miscellaneous indices for graphology.

ESLint React's ESLint plugin for React Flavored JSX rules.

Nanoscale assertion module

JavaScript Testing utilities for React

loglevel plugin that adds colored level prefix (node only)

The OpenRouter TypeScript SDK is a type-safe toolkit for building AI applications with access to 400+ language models through a unified API.

JWT utils for Fastify

Canvas for Node.js with skia backend

Adapter for SvelteKit apps that prerenders your entire site as a collection of static files

Turn async generator functions into ES2015 generators

Babel preset for stage 3 plugins

Client-side Bitcoin JavaScript library

Debounce promise-returning & async functions

render multiple progress bars at once on the terminal with eventlimit maxed

ESLint plugin for Astro component

Insert supplied variable values into a format string.

The spec-compliant & magical GraphQL query language engine in the TypeScript type system