/**
 * @packageDocumentation
 * @module @verdigris/nitrous/drivers
 */
import NodeCache from "node-cache";
import Driver from "../driver";
export default class Memory extends Driver {
    protected cache: NodeCache;
    protected closed: boolean;
    constructor();
    get isClosed(): boolean;
    isConnected(): Promise<boolean>;
    keys(): Promise<string[]>;
    has(key: string): Promise<boolean>;
    get(key: string): Promise<any>;
    set(key: string, value: any, ttl?: number): Promise<boolean>;
    ttl(key: string): Promise<number>;
    expire(key: string, ttl: number): Promise<boolean>;
    delete(keys: string | string[]): Promise<number>;
    close(): Promise<boolean>;
}
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