import { type HashFunction } from '../hashFunction.js';
import type { Cookies, RequestEvent } from '@sveltejs/kit';
import type { RateLimiterPlugin } from './rateLimiterPlugin.js';
import type { Rate } from '../rate.js';
export type CookieSerializeOptions = NonNullable<Parameters<Cookies['set']>[2]>;
export type CookieRateLimiterOptions = {
    name: string;
    secret: string;
    rate: Rate | Rate[];
    preflight: boolean;
    serializeOptions?: CookieSerializeOptions;
    hashFunction?: HashFunction;
};
export declare class CookieRateLimiter implements RateLimiterPlugin {
    readonly rate: Rate | Rate[];
    private readonly cookieOptions;
    private readonly secret;
    private readonly requirePreflight;
    private readonly cookieId;
    private readonly hashFunction;
    constructor(options: CookieRateLimiterOptions);
    hash(event: RequestEvent): Promise<string | false>;
    preflight(event: RequestEvent): Promise<string>;
    private setPreflightCookie;
    private userIdFromCookie;
}