Save time avoiding common mistakes using RxJS

Overview

Note: RxJS imports have changed since the publication of this course. Operators now must be passed into .pipe to be applied to an observable.
In this course we will learn to identify common mistakes with RxJS that usually make code harder to read and even introduce bugs. Most of these mistakes are related to Subject, subscribe, and subscriptions. We are going to see how to use only Observables and convenient operators made for solving those mistakes, such as fromEvent, takeUntil and switchMap. By the end of this course, you will have a more immediate intuition on what patterns are simple and safe in RxJS.

Syllabus

Convert RxJS Subjects to Observables
Replace Observable.create with Observable creation helpers
Use takeUntil instead of manually unsubscribing from Observables
Convert an underlying source of data into an Observable
Use the map operator instead of firing events on a Subject
Use flattening operators instead of nested subscriptions
Use switchMap to avoid leaks when flattening
Replace zip with combineLatest when combining sources of data
Move important side effects from do() to subscribe()
Implement pause and resume feature correctly through RxJS
Know when to extend the Observable class
Make Observables hot only where necessary

Taught by

André Staltz

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