dispatch-decorator.ts

@Component({
    selector: 'app-root',
    template: `
        <ng-container *ngIf="counter$ | async as counter">
            <h1>{{ counter }}</h1>
        </ng-container>
​
        <button (click)="increment()">Increment</button>
    `
})
export class AppComponent {
    @Select(CounterState)
    public counter$: Observable<number>;
​
    @Dispatch()
    public increment = () => new Increment()
}