interfaces get()

// Create interfaces for type

interface Urls {
  small: string;
  regular: string;
}

export interface PictureDate {
  id: string;
  urls: Urls;
}

  getPhotos(): Observable<PictureDate[]> { //Type for responce
    const httpParam = new HttpParams()
      .append('client_id', 'k_uAJlDjzQOJ1wE47nT83aMH6z-tj0_JsoTt9jzVbZI');
    const url = `${environment.apiUrl}/photos`;
    return this.http.get<PictureDate[]>(url, {params: httpParam}).pipe(  //Type for get
      map(p => {
        return p.map(pic => {
          return {
            id: pic.id,
            urls: pic.urls
          };
        });
      })
    );
  }