import type { Context } from '../context.js';
export interface RateLimitOptions {
    windowMs: number;
    max: number;
    message?: string;
    statusCode?: number;
    skipSuccessfulRequests?: boolean;
    skipFailedRequests?: boolean;
    keyGenerator?: (ctx: Context) => string;
    store?: RateLimitStore;
}
interface RateLimitEntry {
    count: number;
    resetTime: number;
}
export interface RateLimitStore {
    get(key: string): Promise<RateLimitEntry | undefined>;
    set(key: string, entry: RateLimitEntry): Promise<void>;
    clear?(): Promise<void>;
}
export declare function rateLimit(options: RateLimitOptions): (ctx: Context, next: () => Promise<any>) => Promise<void>;
export declare class MemoryStore implements RateLimitStore {
    private store;
    get(key: string): Promise<RateLimitEntry | undefined>;
    set(key: string, entry: RateLimitEntry): Promise<void>;
    clear(): Promise<void>;
}
export {};
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