Function Substore

A decorator function that modifies the behavior of any @Select, @Select$, or @Dispatch decorators to operate on a substore defined with a given reducer.

Example

@SubStore(userComponentReducer)
export class TestComponent implements OnInit {
    @Input() userId: String;

    // The substore will be created from the return value of this function.
    basePath(): Array<string | String> | null {
        return this.userId ? ['users', this.userId] : null;
    }
}

Returns

A ClassDecorator function that sets the reducer to the class constructor's LOCAL_REDUCER_KEY property.