import type { ResponseMode } from "../web/types.js";
export declare function requireString(args: Record<string, unknown>, key: string): string;
export declare function requireStringAllowEmpty(args: Record<string, unknown>, key: string): string;
export declare function optionalString(args: Record<string, unknown>, key: string): string | undefined;
export declare function optionalNumber(args: Record<string, unknown>, key: string): number | undefined;
export declare function requireNumber(args: Record<string, unknown>, key: string): number;
export declare function optionalBoolean(args: Record<string, unknown>, key: string): boolean | undefined;
export declare function optionalResponseMode(args: Record<string, unknown>, key: string): ResponseMode | undefined;