Angular rxjs-behaviour-subject-store (redux alike store with Rxjs)

rxjs-behaviour-subject-store.ts

import { BehaviorSubject } from 'rxjs/BehaviorSubject';
import { Observable } from 'rxjs/Observable';

export class Store<T> {
    private _state$: BehaviorSubject<T>;

    protected constructor(initialState: T) {
        this._state$ = new BehaviorSubject(initialState);
    }

    get state$(): Observable<T> {
        return this._state$.asObservable();
    }

    get state(): T {
        return this._state$.getValue();
    }

    setState(nextState: T): void {
        this._state$.next(nextState);
    }
}

///////////////
// usage below 
///////////////
class TestState {
    testProperty: string = 'initial value';
}
 
class TestStore extends Store<TestState> {
    constructor () {
        super(new TestState());
    }
 
    updateTestProperty (): void {
        this.setState({
            ...this.state,
            testProperty: 'updated value',
        });
    }
}
 
class TestComponent {
    store: TestStore;
 
    constructor () {
        this.store = new TestStore();
 
        this.store.state$.subscribe(state => {
            console.log(state);
        });
 
        setTimeout(() => {
            this.store.updateTestProperty();
        }, 3000);
    }
}