home.component.ts

@Component({
    selector: 'i-home',
    templateUrl: './home.component.html',
    styleUrls: ['./home.component.scss']
})
export class HomeComponent implements OnInit {

    lang$: Observable<string>;

    constructor(private readonly translate: TranslateService,
        private readonly store: Store<fromRoot.State>) {
        this.translate.setDefaultLang('en');

        this.lang$ = this.store.select(fromRoot.getCurrentLanguage);
    }

    ngOnInit() {
        this.lang$.subscribe(lang => this.translate.use(lang));
    }

}