HttpService

httpService.ts

export class HttpService {  
    constructor(private http: Http) {}    

    public getSingle<T>(clazz: { new(): T }, url: string, headers?: {}): Promise<T> {
        return new Promise((resolve, reject) => {
            this.http.get(url, this.getHeaders(headers)).toPromise().then((response: any) => {
                let body = response.json();
                if (body) {
                    resolve(MapUtils.deserialize(clazz, body));
                } else {
                    resolve(new clazz());
                }
            },(reject) => {});
        });
    }
}