import type { CacheAdapter, SteepResult } from '../../../types.js';
/**
 * In-memory cache adapter. Lifetime = process lifetime.
 *
 * Default for the CLI when no other adapter is configured. Keeps repeat
 * outlets (e.g. 50 contacts at BBC Radio 1) from triggering 50 scrapes.
 */
export declare class InMemoryCache implements CacheAdapter {
    private store;
    get(outletDomain: string): Promise<SteepResult | null>;
    set(outletDomain: string, result: SteepResult): Promise<void>;
    list(): Promise<string[]>;
    invalidate(outletDomain: string): Promise<void>;
}