Cannot read property 'Symbol(Symbol.iterator)' of undefined

[jadbox]

Getting this error in several places in my project when refactoring to use Yolk v1. I'm using the minified yolk build shown here: http://jsbin.com/noqaxayofo/edit?html,js,console,output

Rx.umd.js:13424Uncaught TypeError: Cannot read property 'Symbol(Symbol.iterator)' of undefined

subscribeToResult   @   Rx.umd.js:13424
CombineLatestSubscriber._complete   @   Rx.umd.js:5774
Subscriber.complete @   Rx.umd.js:1297
ArrayObservable._subscribe  @   Rx.umd.js:2412
Observable.subscribe    @   Rx.umd.js:531
Observable.subscribe    @   Rx.umd.js:531
Observable.subscribe    @   Rx.umd.js:531
ConnectableObservable.connect   @   Rx.umd.js:2796
RefCountObservable._subscribe   @   Rx.umd.js:2850
Observable.subscribe    @   Rx.umd.js:531
Observable.subscribe    @   Rx.umd.js:531
CombineLatestSubscriber._complete   @   Rx.umd.js:5774
Subscriber.complete @   Rx.umd.js:1297
ArrayObservable._subscribe  @   Rx.umd.js:2412
Observable.subscribe    @   Rx.umd.js:531
Observable.subscribe    @   Rx.umd.js:531
SwitchMapSubscriber._innerSub   @   Rx.umd.js:10379
SwitchMapSubscriber._next   @   Rx.umd.js:10372
Subscriber.next @   Rx.umd.js:1272
BehaviorSubject._subscribe  @   Rx.umd.js:300
Observable.subscribe    @   Rx.umd.js:531
Observable.subscribe    @   Rx.umd.js:531
(anonymous function)    @   yolk.min.js:1
Observable.subscribe    @   Rx.umd.js:531
Observable.subscribe    @   Rx.umd.js:531
Observable.subscribe    @   Rx.umd.js:531
Observable.subscribe    @   Rx.umd.js:531
value   @   yolk.min.js:2
(anonymous function)    @   yolk.min.js:2
n   @   yolk.min.js:2
n   @   yolk.min.js:2
c   @   yolk.min.js:2
(anonymous function)    @   yolk.min.js:2

[jadbox]

Seems to have something to do with using withLatestFrom with props members...

[LongLiveCHIEF]

You sure that's the right version link of your jsbin? the one i'm seeing doesn't have any errors.

[jadbox]

@LongLiveCHIEF
It wasn't Yolk at all. I found out that in RxJS v5 that withLatestFrom and combineWith no longer accept an array of observables and instead use Rest style parameters. This error was triggered as Rx could not find the Rx symbol on the array value when that operation was performed. I've since replaced those calls with withLatestFrom.apply(null, obsArray) style calls.

[LongLiveCHIEF]

yeah, I've had that quite often with the RxJS v5 beta... normally in the form of some sort of constructor not defined type of errors. 🍻