".../node_modules/rxjs/Rx" has no exported member 'throwError'

Question

Angular documentation speaks about a "throwError" class whose import statement looking like the following

import { Observable, throwError } from 'rxjs';

But my compiler is not able to find the class and is complaining with the following error message

ERROR in src/app/shared/services/myservice.service.ts(3,10): error TS2305: Module '"D:/workspace/dev/MyProject/node_modules/rxjs/Rx"' has no exported member 'throwError'.

Following are my environment details

Angular CLI: 1.6.8
Node: 8.11.1
OS: win32 x64
Angular: 5.2.8
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, platform-server, router

@angular/cdk: 5.2.4
@angular/cli: 1.6.8
@angular/material: 5.2.4
@angular/service-worker: 1.0.0-beta.16
@angular-devkit/build-optimizer: 0.0.42
@angular-devkit/core: 0.4.5
@angular-devkit/schematics: 0.0.52
@ngtools/json-schema: 1.1.0
@ngtools/webpack: 1.9.8
@schematics/angular: 0.1.17
typescript: 2.4.2
webpack: 3.10.0

What am I missing?

Solution 1

Are you looking for the _throw observable?

import {_throw} from 'rxjs/observable/throw';

update

You were looking at Angular 6 docs which includes rxjs version 6 that contains throwError function. For Angular 5 (includes rxjs 5) use _throw

Solution 2

I did this since I don't like using words that start with _

import { _throw as throwError } from 'rxjs/observable/throw';

Comments

[CornelC]

You are importing throw, but using the ErrorObservable. The example you are giving is an alternative in case you don't like the leading _

[Basavaraj Bhusani]

@CornelC, Yeah, its an alternative. I will correct the answer. Thank you

[Basavaraj Bhusani]

@CornelC, and also you can edit the answers if you think they need editing. Thanks again.

[Evgeniy Malyutin]

I like this one. Can simplify an update to the next versions as you will need to change only the imports.