Convert array to the type of Observable<T[]>

Question

I want to convert an array to type Observable<T[]> and have used the rxjs method "from". But it returns Observable<T>, Is there a way to convert an array to Observable<T[]>?

Player: Observable<T[]>;

convert(){
let tempArr:T[] = Object.values(data) as T[];
let Obsobj = from(tempArr);
this.Player = Obsobj;
}

This is the error message I got, Observable<T> is not assignable to type Observable<T[]>

EDIT

Even though using following code snippet return type isn't as expected.

let $sub = new Subject<Array<T>>();
$sub.next(tempArr);
this.Player$ = $sub.asObservable();

Since I want the return observable type to be as follows.

Observable {_isScalar: false, source: Observable, operator: MapOperator}

but returned the following.

Observable {_isScalar: false, source: Subject}

EDIT #2

complete code snippet.

Player: Observable<B[]>;

convert(data: Dictionary<B>){
   let tempArr:B[] = Object.values(data) as B[];
   let $sub = new Subject<Array<B>>();
   $sub.next(tempArr);
   this.Player$ = $sub.asObservable();
}

What is the issue here? Any help?

Answer 1

Observable.from Documentation: For arrays and iterables, all contained values will be emitted as a sequence! So your items will always be emitted as T and not T[]

For Observable<T[]> do either of the following:

$sub = new Subject<Array<T>>();
this.Player = $sub.asObservable();

OR

this.Player = of(array);

OR

Observable.create((observer) => {observer.next(array)})