Based on EventSource polyfill maintained by Yaffle. See it's repository for more information.

In your project path:

$ npm install event-source

To port it to Browser or any other (non CJS) environment, use your favorite CJS bundler. No favorite yet? Try: Browserify, Webmake or Webpack

require('event-source/global');

If native version is already available, above will do nothing (polyfill won't be loaded).

var EventSource = require('event-source');

If native version is available it'll be returned instead of polyfill.

$ npm test