TypeScript is a language for application scale JavaScript development

A Jest transformer with source map support that lets you use Jest to test projects written in TypeScript

Runtime library for TypeScript helper functions

Babel compiler core.

A bundle of helpful scripts used in projects consuming fbjs.

> Similar to the standard [`jest-environment-jsdom`](https://github.com/facebook/jest/tree/main/packages/jest-environment-jsdom), but exposes `jsdom` so that you can reconfigure it from your test suites.

Modern native Git hooks

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.

Provides polyfills necessary for a full ES2015+ environment

Delightful JavaScript Testing.

Run commands concurrently

Compile object rest and spread to ES5

Convert globs to regular expressions

Jest plugin for filtering by filename or test name

Babel preset for React Native applications