declare function buildRequestCacheKey(fallbackPath: string, request?: Request): string;
declare function getQueryParams(request?: Request): URLSearchParams;
declare function parseOptionalPositiveIntQueryParam(params: URLSearchParams, name: string): number | undefined;
declare function parseOptionalBooleanQueryParam(params: URLSearchParams, name: string): boolean | undefined;
declare function parseOptionalEnumQueryParam<TValue extends string>(params: URLSearchParams, name: string, allowedValues: readonly TValue[]): TValue | undefined;
declare function expectObject(value: unknown, label?: string): Record<string, unknown>;
declare function parseJsonBody<TValue>(request: Request, validator: (payload: unknown) => TValue): Promise<TValue>;
declare function readRequiredString(payload: Record<string, unknown>, field: string, options?: {
    minLength?: number;
    maxLength?: number;
    pattern?: RegExp;
}): string;
declare function readOptionalString(payload: Record<string, unknown>, field: string, options?: {
    minLength?: number;
    maxLength?: number;
    pattern?: RegExp;
}): string | undefined;
declare function readRequiredEnum<TValue extends string>(payload: Record<string, unknown>, field: string, allowedValues: readonly TValue[]): TValue;
declare function readOptionalEnum<TValue extends string>(payload: Record<string, unknown>, field: string, allowedValues: readonly TValue[]): TValue | undefined;
declare function readRequiredPositiveInt(payload: Record<string, unknown>, field: string): number;
declare function readOptionalPositiveInt(payload: Record<string, unknown>, field: string): number | undefined;
declare function parsePositiveIntParam(value: string, name?: string): number;
export { buildRequestCacheKey, expectObject, getQueryParams, parseJsonBody, parseOptionalBooleanQueryParam, parseOptionalEnumQueryParam, parseOptionalPositiveIntQueryParam, parsePositiveIntParam, readOptionalEnum, readOptionalPositiveInt, readOptionalString, readRequiredEnum, readRequiredPositiveInt, readRequiredString, };