• https://cdn.bootcdn.net/ajax/libs/rxjs/6.0.0-alpha.1/Rx.js
• https://cdn.bootcdn.net/ajax/libs/rxjs/6.0.0-alpha.1/Rx.js.map
• https://cdn.bootcdn.net/ajax/libs/rxjs/6.0.0-alpha.1/Rx.min.js
• https://cdn.bootcdn.net/ajax/libs/rxjs/6.0.0-alpha.1/Rx.min.js.map