import type { IncomingMessage, ServerResponse } from "node:http";
export declare function boundedString(value: unknown, maxBytes: number): string | undefined;
export declare function isLanVoiceOriginAllowed(request: IncomingMessage): boolean;
export declare class LanVoiceRequestError extends Error {
    readonly status: number;
    constructor(status: number, message: string);
}
export declare function readJson(request: IncomingMessage): Promise<Record<string, unknown>>;
export declare function requiredClientId(body: Record<string, unknown>): string;
export declare function sendText(response: ServerResponse, contentType: string, body: string, html?: boolean): void;
export declare function sendJson(response: ServerResponse, status: number, value: unknown): void;
export declare function sendBinary(response: ServerResponse, contentType: string, body: Buffer): void;
export declare function assertJsonPost(request: IncomingMessage): void;