export declare class Observable<T> {
  private promise
  constructor(promise: Promise<T>)
  toPromise(): Promise<T>
  pipe<S>(callback: (value: T) => S | Promise<S>): Observable<S>
}
export declare function from<T>(promise: Promise<any>): Observable<any>
export declare function of<T>(value: T): Observable<T>
export declare function mergeMap<T, S>(callback: (value: T) => Observable<S>): (value: T) => Promise<S>
export declare function map(callback: any): any