import { Observable } from "rxjs";
/**
 * Utility to create a hybrid object that acts as both an Observable and a Promise.
 *
 * @remarks
 * This allows the client to treat a function call as a Promise (awaiting the first result)
 * or an Observable (subscribing to a stream of results), providing flexibility.
 *
 * @param observable - The observable stream.
 * @param promise - The promise that resolves with the first value.
 * @returns An object that implements both Observable and Promise interfaces.
 */
export declare function observablePromise(observable: Observable<unknown>, promise: Promise<unknown>): Observable<unknown> & Promise<unknown>;