import { Buffer } from 'node:buffer';
import type { IncomingMessage, ServerResponse } from 'node:http';
export declare function securityHeaders(): Record<string, string>;
export declare function readJsonBody(request: IncomingMessage): Promise<Record<string, unknown>>;
export declare function readRawBody(request: IncomingMessage, input?: {
    maxBytes?: number;
    errorLabel?: string;
}): Promise<Buffer>;
export declare function assertJsonContentType(request: IncomingMessage, path: string): void;
export declare function respondJson(response: ServerResponse, statusCode: number, value: unknown, headers?: Record<string, string>): void;
export declare function isLoopback(request: IncomingMessage): boolean;