import type { CachePolicyImplementation, CachePolicyImplementationArgs } from '../CachePolicy';
import type { Snapshot } from '../interfaces/Snapshot';
export declare function buildValidAtImplementation<C, D>(basePolicyImplementation: CachePolicyImplementation<C, D>, timestamp: number): (args: CachePolicyImplementationArgs<C, D>) => Snapshot<D> | Promise<Snapshot<D>>;