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Am using rxjs 6.3.3 version it throw error on console after logged to webpage. I didn't get any idea to clear this error

    at subscribeTo (subscribeTo.js:41)
    at subscribeToResult (subscribeToResult.js:11)
    at MergeMapSubscriber.push../node_modules/rxjs/_esm5/internal/operators/mergeMap.js.MergeMapSubscriber._innerSub (mergeMap.js:74)
    at MergeMapSubscriber.push../node_modules/rxjs/_esm5/internal/operators/mergeMap.js.MergeMapSubscriber._tryNext (mergeMap.js:68)
    at MergeMapSubscriber.push../node_modules/rxjs/_esm5/internal/operators/mergeMap.js.MergeMapSubscriber._next (mergeMap.js:51)
    at MergeMapSubscriber.push../node_modules/rxjs/_esm5/internal/Subscriber.js.Subscriber.next (Subscriber.js:54)
    at Observable._subscribe (subscribeToArray.js:5)
    at Observable.push../node_modules/rxjs/_esm5/internal/Observable.js.Observable._trySubscribe (Observable.js:43)
    at Observable.push../node_modules/rxjs/_esm5/internal/Observable.js.Observable.subscribe (Observable.js:29)
    at MergeMapOperator.push../node_modules/rxjs/_esm5/internal/operators/mergeMap.js.MergeMapOperator.call (mergeMap.js:29)
Bhagwat Tupe
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Surya Bharathi
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2 Answers2

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It seems like to come from a Subscription from a Observable. Please consider adding your code, so we can determine this better

Sain Linkerty
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  • @SuryaBharathi You didnt add code insteadf you just showed the error message in your edit. Please consder addingt your actual code. – Sain Linkerty Aug 13 '19 at 14:11
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check your operator importing it should be

import { tap, map } from 'rxjs/operators';

FURTHER REFERENCE

https://brianflove.com/2018/03/21/master-rxjs-operators/

If you’re using RxJS v5.4.x then you will want to import using the prototype-based imports:

import 'rxjs/add/operators/switchMap';

If you’re using RxJS v5.5.x then you will use an ES6-style import of the exported function, for example:

import { switchMap } from "rxjs/operators";
Chanaka Weerasinghe
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  • Thanks, am using "rxjs": "~6.3.3", i getting this error, TypeError: You provided 'undefined' where a stream was expected. You can provide an Observable, Promise, Array, or Iterable. – Surya Bharathi Aug 02 '19 at 11:53