• https://cdn.bootcdn.net/ajax/libs/rxjs/5.6.0-forward-compat.4/Rx.js
• https://cdn.bootcdn.net/ajax/libs/rxjs/5.6.0-forward-compat.4/Rx.js.map
• https://cdn.bootcdn.net/ajax/libs/rxjs/5.6.0-forward-compat.4/Rx.min.js
• https://cdn.bootcdn.net/ajax/libs/rxjs/5.6.0-forward-compat.4/Rx.min.js.map