how to return an empty observable

Question

according to this answer How to return an empty observable in rxjs i have tried all of it but it did not work for me

here is my code

post(url):Observalbe<any>{
   if(this.holder.nullConnection()){ //checking internet connection
      //return empty observalbe
      return Observable.empty() ;
    }else{
      return this.http.post(this.configurator.restServerBaseUrl+url,data)
      .map((result:Response)=> {
        return result.json()
      })
    }
}

i have tried almost all the answers as per the stack question you can see above any help to return an empty obserable.

Possible duplicate of [How to return an empty observable in rxjs](https://stackoverflow.com/questions/38548407/how-to-return-an-empty-observable-in-rxjs) — Murhaf Sousli, Dec 02 '17 at 01:47
please read my question i have mentioned your question and asked my question diff from yours @murhaf — Mohan Gopi, Dec 02 '17 at 03:03

Günter Zöchbauer · Accepted Answer · 2016-12-05T09:57:05.517

12

Observable.of() should work for your case:

import {Observable} from 'rxjs/Observable';
import 'rxjs/add/observable/of';
// or import {Observable} from 'rxjs/Rx';

return Observable.of();

or

import {EmptyObservable} from 'rxjs/EmptyObservable';

return new EmptyObservable();

edited Dec 05 '16 at 09:57

answered Dec 05 '16 at 09:49

Günter Zöchbauer

623,577
216
2,003
1,567

i tried both as i am using visual studio and my editor is showing error on `of()` do we have to import anything like EmptyObservable – Mohan Gopi Dec 05 '16 at 09:50
as you can see my else part is working fine only i am struggling to retrun an empty observable – Mohan Gopi Dec 05 '16 at 09:53
u have to import the of operator – Suraj Rao Dec 05 '16 at 09:55
it is saying that cannot find name of() like that – Mohan Gopi Dec 05 '16 at 09:55
2

import 'rxjs/add/observable/of'; – Suraj Rao Dec 05 '16 at 09:56
@GünterZöchbauer [ts] Property 'of' does not exist on type 'typeof Observable'. this is the error – Mohan Gopi Dec 05 '16 at 09:56

score 0 · Answer 2 · answered Dec 05 '16 at 09:54

0

In angular 2 you can return empty observable by using this :

import {EmptyObservable} from 'rxjs/EmptyObservable';
    return new EmptyObservable();

answered Dec 05 '16 at 09:54

Jitendra gupta

98
8

8

For me; `import {EmptyObservable} from 'rxjs/observable/EmptyObservable';` – Kildareflare Mar 06 '17 at 05:16

how to return an empty observable

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