import { Subscription } from 'rxjs';
export declare function getOrDefault(value: any, def: any): any;
export declare function getByKeyOrDefault(obj: any, key: string, def: any): any;
export declare function getOptionById(options: any[], value: string, key?: string): any;
export declare function unsubscriptionTimeout(timeout: number, sub: Subscription): void;
export declare function unsubscribe(sub: Subscription): void;
export declare function promiseTimeout(ms: any, promise: any): Promise<any>;
export declare function timePromise(ms: any): Promise<unknown>;
export declare function to(promise: Promise<any>): Promise<any>;