import { type Ref, type Refable, type RefByUnique } from 'domain-objects';
import type { DeclastructDao } from '../../domain.objects/DeclastructDao';
/**
 * .what = resolves any ref to RefByUnique
 * .why = enables getting unique key from any ref type
 * .note = if ref is already RefByUnique, returns as-is without db call
 */
export declare const getRefByUnique: <TResourceClass extends Refable<any, any, any>, TContext extends Record<string, any>>(input: {
    ref: Ref<TResourceClass>;
}, context: {
    dao: DeclastructDao<TResourceClass, TContext>;
} & TContext) => Promise<RefByUnique<TResourceClass> | null>;