/**
 * Memory System - Conversation and context memory management
 */
export interface MemoryEntry {
    id: string;
    content: string;
    role: 'user' | 'assistant' | 'system';
    timestamp: number;
    metadata?: Record<string, any>;
    embedding?: number[];
}
export interface MemoryConfig {
    maxEntries?: number;
    maxTokens?: number;
    embeddingProvider?: EmbeddingProvider;
}
export interface EmbeddingProvider {
    embed(text: string): Promise<number[]>;
    embedBatch(texts: string[]): Promise<number[][]>;
}
export interface SearchResult {
    entry: MemoryEntry;
    score: number;
}
/**
 * Memory class for managing conversation history and context
 */
export declare class Memory {
    private entries;
    private maxEntries;
    private maxTokens;
    private embeddingProvider?;
    constructor(config?: MemoryConfig);
    /**
     * Add a memory entry
     */
    add(content: string, role: 'user' | 'assistant' | 'system', metadata?: Record<string, any>): Promise<MemoryEntry>;
    /**
     * Get a memory entry by ID
     */
    get(id: string): MemoryEntry | undefined;
    /**
     * Get all entries
     */
    getAll(): MemoryEntry[];
    /**
     * Get recent entries
     */
    getRecent(count: number): MemoryEntry[];
    /**
     * Search memory by text similarity
     */
    search(query: string, limit?: number): Promise<SearchResult[]>;
    /**
     * Simple text search fallback
     */
    private textSearch;
    /**
     * Calculate cosine similarity
     */
    private cosineSimilarity;
    /**
     * Delete a memory entry
     */
    delete(id: string): boolean;
    /**
     * Clear all memory
     */
    clear(): void;
    /**
     * Get memory size
     */
    get size(): number;
    /**
     * Build context string from recent memory
     */
    buildContext(count?: number): string;
    /**
     * Export memory to JSON
     */
    toJSON(): MemoryEntry[];
    /**
     * Import memory from JSON
     */
    fromJSON(entries: MemoryEntry[]): void;
    private generateId;
    private enforceLimit;
}
/**
 * Create a memory instance
 */
export declare function createMemory(config?: MemoryConfig): Memory;