preactjs/preact-render-to-string

Turn JSX into React function calls

A Babel preset for each environment.

babel require hook

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

copy some files

Modern native Git hooks

Lint files staged by git

simple, flexible, fun test framework

JavaScript test spies, stubs and mocks.

Extends Chai with assertions for the Sinon.JS mocking framework.

TypeScript is a language for application scale JavaScript development

Tiny wrapper around benchmarkjs with a simpler api

Check if entries in an export map in package.json are valid and point to actual files/folders

Stringify any JavaScript value.

Web Streams, based on the WHATWG spec reference implementation