Global identifiers from different JavaScript environments
Use Custom Properties Queries in CSS
Correctly declare progressive enhancements for CSS Custom Properties.
Client-side support for CSS custom properties (aka "CSS variables") in legacy and modern browsers
PostCSS plugin for Sass-like variables
Lightweight debugging utility for Node.js and the browser
Lodash modular utilities.
React is a JavaScript library for building user interfaces.
A querystring parser that supports nesting and arrays, with a depth limit
Higher-order functions and common patterns for asynchronous code
Babel compiler core.