import type { IMemoryStore, RetentionPolicy } from '../IMemoryStore.ts';
export declare class InMemoryStore<T> implements IMemoryStore<T> {
    private entries;
    private policy;
    constructor(policy?: RetentionPolicy);
    set(key: string, value: T, ttlMs?: number): Promise<void>;
    get(key: string): Promise<T | undefined>;
    delete(key: string): Promise<number>;
    has(key: string): Promise<boolean>;
    clear(): Promise<void>;
    size(): Promise<number>;
    prune(policy: RetentionPolicy): Promise<number>;
    stats(): Promise<{
        totalEntries: number;
        oldestEntry: Date | null;
    }>;
    expire(key: string, ttlMs: number): void;
    private isExpired;
    private isPastPolicyMaxAge;
    private removeExpired;
}
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