import { Request } from 'express';
type NbAttempts = '1' | '2' | '3' | '4' | '5' | '6' | '7' | '10' | '15' | '20' | '30' | '50' | '60' | '100' | '150' | '200';
type TimeRange = 'min' | '30s' | '5s';
export type RateLimiterStr = `${NbAttempts}/${TimeRange}` | 'disable';
type RateLimiterObj = {
    /** Max nb attemps in the given time window */
    maxNbAttemptsInGivenTimeWindow: number | {
        main: number;
    } & {
        [env in Exclude<Env, 'ci'>]?: number;
    };
    /** Time window for nb attemps */
    timeWindowInSecondsForNbAttempts: number | {
        main: number;
    } & {
        [env in Exclude<Env, 'ci'>]?: number;
    };
};
export type RateLimiterConfig = RateLimiterObj | RateLimiterStr | ({
    [k in Env]?: RateLimiterStr;
} & {
    default: RateLimiterStr;
});
export declare const rateLimiter: {
    recordAttemptAndThrowIfNeeded(ctx: Ctx, route: string, rateLimiterConfig?: RateLimiterConfig): Promise<any>;
    cleanup(): Promise<void>;
};
export declare function rateLimiterMiddleware(ipWhitelist?: string[], config?: RateLimiterConfig): (req: Request, res: any, next: any) => Promise<any>;
export {};