import type { RequestEvent } from '@sveltejs/kit';
import type { Rate } from '../rate.js';
import type { RateLimiterPlugin } from './rateLimiterPlugin.js';
export declare class CloudflareIPRateLimiter implements RateLimiterPlugin {
    readonly rate: Rate | Rate[];
    constructor(rate: Rate | Rate[]);
    hash(event: RequestEvent): Promise<string | boolean | null>;
}
export declare class CloudflareIPUARateLimiter extends CloudflareIPRateLimiter {
    constructor(rate: Rate | Rate[]);
    hash(event: RequestEvent): Promise<string | false>;
}