Transforming an Observable of an Array into an Observable of individual items

Trying to convert an

Observable<Array<ISource>>
to an Observable<ISource>.

To accomplish this:

this.sources$ = this.store$
    .select(fromRoot.getSourceEntities)
    .map(sourceEntities => {
      return sourceEntities
        .filter((source:ISource) => source.id != null)
        .map((source:ISource) => { return <ISource>{id: source.id}; });
    })
    .takeUntil(this.componentDestroyed$);

An error message is showing up:

Type 'Observable<ISource[]>' is not assignable to type 'Observable<ISource>'.

Any suggestions?

Answer №1

this.sources$ is defined as type ISource, but you are trying to assign an array of ISource[] to it, which causes an error. Modify the declaration of this.sources$ as shown below. Your sourceEntries is an array that filters and returns a collection of ISource objects.

sources$: ISource[];

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