React, Flux, GraphQL, Hack, HHVM...? All of this and more!
Using ECMAScript modules from ES6 / ES2015 has been a daily for many developers for many years using module bundlers like Webpack. With the Release of Firefox 60 stable, ECMAScript modules are now supported in all major browsers - out of the box.
This means you can start using native modules in browsers! Microsoft Edge, Google Chrome, Mozilla Firefox, Apple's Safari (macOS and iOS) are all in. Check out the compatibility table: https://caniuse.com/#search=modulesTweet