rxjs 6 Property 'of' does not exist on type 'typeof Observable'

Question

Just moved from rxjs 5/angular 5 to rxjs 6/ angular 6, went through this migration-guide. Can't seem to figure out what it should be now, any help appreciated.

import { Observable, of } from 'rxjs';
[ts] 'of' is declared but its value is never read.

// trivial example of what im trying to replace
  isLoggedIn(): Observable<boolean> {
    return Observable.of(true);
  }

score 34 · Accepted Answer · answered Jun 07 '18 at 23:03

34

You can now just import of from rxjs. So....

import { Observable, of } from 'rxjs';

// trivial example of what im trying to replace
  isLoggedIn(): Observable<boolean> {
    return of(true);
  }

answered Jun 07 '18 at 23:03

MichaelSolati

2,847
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updated the question with the imports that I have, still not working and the linter gives an error. any ideas? – alphapilgrim Jun 07 '18 at 23:06
2

It's good that you're importing, but `of` isn't an attribute, it's a function that returns an observable. Hence my sample above! – MichaelSolati Jun 07 '18 at 23:09
Thanks @MichaelSolati, very handy. – David Sagang Aug 24 '18 at 18:18

score 7 · Answer 2 · answered Apr 17 '20 at 12:14

7

If you are using Angular 6 /7 or 9

import { of } from 'rxjs';

And then instead of calling

Observable.of(res);

just use

of(res);

answered Apr 17 '20 at 12:14

Mohammad Aljunde

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rxjs 6 Property 'of' does not exist on type 'typeof Observable'

2 Answers2