import type { Session } from '../../types/index.js';
import type { MemoryService } from '../MemoryService.js';
import type { MemoryIngestionOptions, SearchMemoryRequest, SearchMemoryResponse } from '../types.js';
/**
 * In-memory implementation of MemoryService for development and testing.
 *
 * Uses keyword-based search with term overlap scoring.
 * All data is stored in-process and lost on restart.
 */
export declare class InMemoryMemoryService implements MemoryService {
    /**
     * In-memory storage indexed by userId.
     * Each user has a map of sessionId → MemoryEntry[].
     */
    private memories;
    addSessionToMemory(session: Session, options?: MemoryIngestionOptions): Promise<void>;
    searchMemory(request: SearchMemoryRequest): Promise<SearchMemoryResponse>;
    deleteMemories(userId: string): Promise<void>;
}