increment-app.component.ts

import { Dispatch } from '@ngxs-labs/dispatch-decorator';
import { CounterState, Increment } from './counter.state';
...

@Component({
  selector: 'my-app',
  template: `
    <h1>Count is {{ counter$ | async }}<h1>
    <button (click)="increment()">increment</button>
  `
})
export class AppComponent  {
  @Select(CounterState) public counter$: Observable<number>;
  @Dispatch() public increment = () => new Increment();
}