import type { SimulationContext, SimulationFunction } from './types.js';
export interface RequireHeaderOptions {
    status?: number;
    message?: string;
    code?: string;
}
export interface RequireBearerTokenOptions extends RequireHeaderOptions {
    headerName?: string;
}
export interface RateLimitOptions {
    windowMs: number;
    max: number;
    key?: (context: SimulationContext) => string;
    status?: number;
    message?: string;
    code?: string;
}
/**
 * Wraps a simulation handler so it returns 401 (by default) when a header is missing.
 */
export declare const requireHeader: (name: string, options?: RequireHeaderOptions) => <TData extends Record<string, unknown>>(handler: SimulationFunction<TData>) => SimulationFunction<TData>;
/**
 * Requires `Authorization: Bearer <token>` and validates the token.
 */
export declare const requireBearerToken: (validate: (token: string, context: SimulationContext) => boolean | Promise<boolean>, options?: RequireBearerTokenOptions) => <TData extends Record<string, unknown>>(handler: SimulationFunction<TData>) => SimulationFunction<TData>;
/**
 * Simple in-memory sliding-window rate limiter keyed by a function of the request.
 */
export declare const rateLimit: (options: RateLimitOptions) => <TData extends Record<string, unknown>>(handler: SimulationFunction<TData>) => SimulationFunction<TData>;
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