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

Question

I am using Angular 6
using "rxjs": "^6.0.0",
ERROR : Property 'of' does not exist on type 'typeof Observable'.
import { Injectable } from '#angular/core';
import { TranslateLoader } from '#ngx-translate/core';
import { Observable, Subject, pipe, of } from 'rxjs';
#Injectable()
export class MiTranslateLoaderService implements TranslateLoader {
getTranslation(lang: string): Observable<any> {
return Observable.of({
lbl_select: 'Select',
});
}
}

Answer 1

Since RxJS 6 the correct and recommended way of using of() (RxJS 5 in Observable.of()) is this:
import { of } from 'rxjs';
I think this import { of } from 'rxjs/observable/of'; will work only while you have rxjs-compat package installed.

Answer 2

There are some updates in rxjs: ( Its rxjs6)
import { of } from 'rxjs';
It will work only when your app has rxjs-compat package installed
You can import of from rxjs:
import { Observable,of } from 'rxjs';
And simply return of()
return of({
lbl_select: 'Select',
});
So your code will be:
import { Injectable } from '#angular/core';
import { TranslateLoader } from '#ngx-translate/core';
import { Observable, of } from 'rxjs';
#Injectable()
export class MiTranslateLoaderService implements TranslateLoader {
getTranslation(lang: string): Observable<any> {
return of({
lbl_select: 'Select',
});
}
}

Answer 3

This is working for me.
Angular CLI 6.0.8
RxJS 6.2.2
import {of} from 'rxjs/index';
this.dataService.currentData
.pipe(takeUntil(this.destroy$))
.pipe(switchMap((myData:MyDataType) =>
of(this.anotherService.get(myData._id))))
.pipe(map((response) => {
if(response instanceof Error) {
console.log('error:');
console.dir(response);
}
return response;
}))
.subscribe((data:any) => {
doStuff(data);
},
response => {
console.log('response error');
console.log(response)
},
() => {
console.log('response complete.');
});

Answer 4

With the release of version 6, RxJS changed its internal package structure
https://www.academind.com/learn/javascript/rxjs-6-what-changed/#import-statement-update-path
import 'rxjs/add/observable/of';
// or
import { of } from 'rxjs/observable/of';

Answer 5

You need to import of from rxjs/observable/of
import { of } from "rxjs/observable/of";
Usage:
return of({
lbl_select: 'Select',
});
Update: for rxjs version 6 without rxjs-compat, you need to import of from rxjs itself as mentioned by #martin.
import { of } from 'rxjs';
Migration guide to rxjs6

Answer 6

The solution is to return of(..) directly :
getTranslation(lang: string): Observable<any> {
return of({
lbl_select: 'Select',
});