import { ProviderResponse } from '../../../types/chat';
import { VertexCacheKey } from './types';
export declare class VertexCache {
    private cache;
    set(key: VertexCacheKey, value: ProviderResponse): void;
    get(key: VertexCacheKey): ProviderResponse | undefined;
    has(key: VertexCacheKey): boolean;
    clear(): void;
    private stringifyKey;
}