ReturnNewObserv.ts

request(): Observable<any> {
    return new Observable(observer => {
       fetch(`${baseUrl}${this.url}`,{
         method: this.method as any,
         headers: this.headers,
         body: this.body
       }).then((r: any) => {
         return r.json()
       }).then((data: any) => {
         observer.next(data);
         observer.complete();
       }).catch((e: any) => {
         observer.error(e);})
    });
}