RxJS Join Patterns Module The Reactive Extensions for JavaScript also supports join calculus in that you can easily create patterns for when certain observable sequences fire. Details Files: rx.joinpatterns.js NPM Packages: rx NuGet Packages: RxJS-All RxJS-JoinPatterns File Dependencies: rx.js | rx.compat.js | rx.lite.js | rx.lite.compat.js NuGet Dependencies: RxJS-Lite RxJS-Main Included Observable Operators Observable Methods when Observable Instance Methods and Pattern Instance Methods then