Angular - “has no exported member 'Observable'”

Question

Typescript code:

import { Injectable } from \'@angular/core\';
import { Observable } from \'rxjs/Observable\';
import { of         


        

Answer 1

Update angular-in-memory-web-api version. The default angular-in-memory-web-api version installed during the tutorial angular-tour-of-heroes was 0.4. It worked like a charm in my case. (Using Angular 7 with RxJS 6)

npm i angular-in-memory-web-api@0.8.0

Answer 2

This might be helpful in Angular 6 for more info refer this Document

1. rxjs: Creation methods, types, schedulers and utilities

import { Observable, Subject, asapScheduler, pipe, of, from, interval, merge, fromEvent } from 'rxjs';

2. rxjs/operators: All pipeable operators:

import { map, filter, scan } from 'rxjs/operators';

3. rxjs/webSocket: The web socket subject implementation

import { webSocket } from 'rxjs/webSocket';

4. rxjs/ajax: The Rx ajax implementation

import { ajax } from 'rxjs/ajax';

5. rxjs/testing: The testing utilities

import { TestScheduler } from 'rxjs/testing';

Answer 3

In my case this error was happening because I had an old version of ng cli in my computer.

The problem was solved after running:

ng update

ng update @angular/cli

Answer 4

You are using RxJS 6. Just replace

import { Observable } from 'rxjs/Observable';
import { of } from 'rxjs/observable/of';

by

import { Observable, of } from 'rxjs';

Answer 5

I had a similar issue. Back-revving RXJS from 6.x to the latest 5.x release fixed it for Angular 5.2.x.

Open package.json.

Change "rxjs": "^6.0.0", to "rxjs": "^5.5.10",

run npm update

Answer 6

Apparently (as you point in the error log), after updating to Angular 6.0.0 rxjs-compat is missing.

Run npm install rxjs-compat --save to install. Should fix it.