Angular 6 RXJS Import Syntax?

Question

I\'m migrating an Angular 5 app to the latest CLI and Angular 6 RC and all of my Observable imports are broken. I see that Angular 6 changes the way the imports work, but I

Answer 1

From rxjs 5.5, catch has been renamed to catchError function to avoid name clash.

Due to having operators available independent of an Observable, operator names cannot conflict with JavaScript keyword restrictions. Therefore the names of the pipeable version of some operators have changed.

import { catchError } from 'rxjs/operators';

For throw you can use ErrorObservable.

import { ErrorObservable } from 'rxjs/observable/ErrorObservable';
ErrorObservable.create(new Error("oops"));

rxjs 6

Instead of ErrorObservable use throwError.

 import { throwError } from 'rxjs'
 throwError(new Error("oops"));

Also you will now have to pipe the operators instead of directly chaining them to the observable