import type { ServerResponse } from 'node:http';
import type { FastifyInstance } from 'fastify';
export declare function registerErrorHandler(fastify: FastifyInstance): void;
export declare function routePath(rawUrl: string | undefined): string;
export declare function queryParam(rawUrl: string | undefined, key: string): string | undefined;
export declare function sendJsonRaw(response: ServerResponse, statusCode: number, body: object): void;
export declare function stringBodyField(body: Record<string, unknown>, key: string): string | undefined;
export declare function requiredBodyString(body: Record<string, unknown>, key: string): string;
export declare function optionalString(value: unknown): string | undefined;
export declare function stringValue(value: unknown, key: string): string;
export declare class HttpError extends Error {
    readonly statusCode: number;
    constructor(statusCode: number, message: string);
}
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