Simple way to get the current value of a BehaviorSubject with rxjs5

Question

Previously in rxjs4 there was a method in the BehaviorSubject called: getValue() (doc here).

This method does not exist anymore in rxjs5.

So the only solution that I found to get the value of a BehaviorSubject was:

let value;
myBehaviorSubject.take(1).subscribe( (e) => value = e );

This code runs synchronously (I do not exactly understand why, but it does ...) and gets the value. It works, but it's not as clean as it could be if getValue() was present:

let value = myBehaviorSubject.getValue();

Why getValue() was removed in rxjs5 and what's the cleanest solution to this problem?

The BehaviorSubject interface has been simplified - the getter is called just .value. — artur grzesiak
@arturgrzesiak I do not find any reference to this .value in the current doc: reactivex.io/rxjs/class/es6/… — Clement
docs may be not up to date, but still it works. Take a look here as well: reactivex.io/rxjs/test-file/spec-js/subjects/… — artur grzesiak
@Clement was correct, this was never added to the documentation because it was never intended for consumer use. Anyone who upgrades to 6.5.0 will find that it is no longer working as it has been removed: github.com/ReactiveX/rxjs/issues/5085 — Jamie Barker

Tyson Phalp Tyson Phalp · Accepted Answer · 2017-02-13T18:04:37

As was pointed out by artur grzesiak in the comments, the BehaviorSubject interface was cleaned up, and the getter is now just .value.

I just wanted to add this as an answer because I almost didn't read the comments to the original question, and would have missed the correct answer.

Simple way to get the current value of a BehaviorSubject with rxjs5

2 Answers