import RedisDriver from './RedisDriver.js';
import { Context } from 'koa';
interface ICacheOptions {
    age?: string;
    headers?: Record<string, string>;
    query?: string | string[] | boolean;
}
interface ICacheConfig {
    age: number;
    headers: Record<string, string>;
    query: string[];
}
interface IConstructor {
    enabled: boolean;
    keyPrefix: string;
    redisModeMap?: Record<string, string>;
    redisPort?: number;
    redisUri: string;
}
interface IGenerateKey {
    ctx: Context;
    query: string[];
}
declare class Index {
    private _enabled;
    private _redisDriver;
    constructor(params: IConstructor);
    static generateCacheControl(age: number): string;
    static generateConfig(rawParams?: ICacheOptions | string): ICacheConfig;
    static generateKey({ ctx, query }: IGenerateKey): string;
    static generateSurrogateControl(age: number): string;
    cache(options: ICacheOptions): (ctx: Context, next: () => void) => Promise<void>;
    flushCache(): Promise<number>;
    getRedisDriver(): RedisDriver;
}
export default Index;