import type { IncomingMessage } from "node:http";
export declare function readBoundedJson(request: IncomingMessage, maximumBytes: number): Promise<Record<string, unknown>>;
export declare function assertExactKeys(value: Record<string, unknown>, required: readonly string[], optional?: readonly string[]): void;
export declare function stringField(value: Record<string, unknown>, key: string): string;
export declare function numberField(value: Record<string, unknown>, key: string): number;