todo.component.ts

export class TodoComponent implements OnInit {

  constructor(private _store: Store<State>) { }

  ngOnInit() {
  }

  createTodo() {
    // Или любой другой способ задать значения :)
    let todo: Todo = {
      id: 1,
      userId: 1,
      completed: false,
      title: 'Lorem ipsum dolor amet'
    };

    this._store.dispatch(new AddNewTodo(todo))
  }
  editTodo(id) {
    this._store.dispatch(new EditTodo(id))
  }
  removeTodo(id) {
    this._store.dispatch(new RemoveTodo(id))
  }
}