🐠 Babel is a compiler for writing next generation JavaScript.

A set of Babel plugins that enable injecting different polyfills with different strategies in your compiled code.

🌐 The Babel documentation website

Canary in the Gold Mine

Delightful JavaScript Testing.

Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.

Want Fiddler Everywhere Enterprise for Free? Then Patch it! Patch every version Automatically!

ESLint plugin with rules that help validate proper imports.

✨ Monorepo for all the tooling which enables ESLint to support TypeScript

Prettier is an opinionated code formatter.

Infrastructure for TypeScript's benchmarking system

Run test262 tests on Node 0.10 using Babel 7 and `core-js@3`.

Open Source Computer Vision Library

regexpu’s core functionality, i.e. `rewritePattern(pattern, flag, options)`, which enables rewriting regular expressions that make use of the ES6 `u` flag into equivalent ES5-compatible regular exp…

Official ECMAScript Conformance Test Suite

🍣 The one-stop shop for official Rollup plugins

Source transformer enabling ECMAScript 6 generator functions in JavaScript-of-today.

Generate regular expressions from regjsparser’s AST.

Node.js JavaScript runtime ✨🐢🚀✨

The VS Code JavaScript debugger

This Yarn plugin adds support for the `condition:` protocol. It can be used for conditionally selecting a dependency version depending on a specific flag.

A Jest runner that runs tests directly in bare Node.js, without virtualizing the environment.

The repository for high quality TypeScript type definitions.

Parsing the JavaScript's RegExp in JavaScript.

Get available v8 and Node.js flags.

Fast, disk space efficient package manager -- 快速的，节省磁盘空间的包管理工具