angular 2.0 1

class AppComponent {
  
  products: Array = [];
  
  constructor(private http: Http) { 
  
    this.http.get('/products') 
        .map(res => res.json()) 
        .subscribe(
            data => {
              if (Array.isArray(data)){
                this.products=data; 
              } else{
                this.products.push(data);
              }
            },
            err =>
              console.log("Can't get products. Error code: %s, URL: %s ",  err.status, err.url), 
            () => console.log('Product(s) are retrieved') 
        );
  }
}