Angular: create is deprecated: use new Observable() instead

Question

I recently updated my version of angular using ng update and when running ng lint

I am getting the error create is deprecated: use

Answer 1

Pretty simple

this.data$ = new Observable((observer: Observer) => {
  observer.next();
  observer.complete();
});

Answer 2

Or you can use just

this.data$ = of(this.model);

Answer 3

observableSubscription: Subscription;

Creating Custom Observable

const observer = new Observable((observer: Observer) => {
   observer.next();
   observer.error();
   observer.complete();
});

Subscribing To Custom Observable

this.observableSubscription = observer.subscribe((data:any) => {
   console.log(data);
})

Unsubscribing

this.observableSubscription.unsubscribe();