import { from, Notification } from 'rxjs';
import { dematerialize } from 'rxjs/operators';
//emit next and error notifications
Notification.createNext('SUCCESS!'),
Notification.createError('ERROR!')
//turn notification objects into notification values
//output: 'NEXT VALUE: SUCCESS' 'ERROR VALUE: 'ERROR!'
const subscription = source.subscribe({
next: val => console.log(`NEXT VALUE: ${val}`),
error: val => console.log(`ERROR VALUE: ${val}`)