import type { PondoknusaRequest } from './request.js';
import type { Middleware } from './types.js';
export interface ThrottleEntry {
    count: number;
    resetAt: number;
}
/**
 * Pluggable counter store for rate limiting.
 *
 * The default in-memory store is process-local: it resets on restart and does
 * not share state across workers or instances. Pass a shared store (e.g. Redis)
 * in multi-node deployments.
 */
export interface ThrottleStore {
    get(key: string): ThrottleEntry | undefined | Promise<ThrottleEntry | undefined>;
    set(key: string, entry: ThrottleEntry): void | Promise<void>;
}
export interface ThrottleOptions {
    limit: number;
    windowMs: number;
    key?: (request: PondoknusaRequest) => string;
    /** Defaults to a process-local Map. */
    store?: ThrottleStore;
}
export declare function createThrottleMiddleware(options: ThrottleOptions): Middleware;
export declare function resetThrottleStore(): void;
export interface ThrottlePresetMap {
    [preset: string]: ThrottleOptions;
}
export declare function throttleMiddlewareAlias(preset: string): string;
export declare function registerThrottlePresets(register: (name: string, middleware: Middleware) => void, presets: ThrottlePresetMap): void;
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