import type { ApiRoute } from './types.js';
/**
 * Error thrown when an {@link ApiRoute} fails structural validation.
 *
 * Consumers can use `instanceof InvalidRouteError` to distinguish route
 * validation failures from other error types.
 */
export declare class InvalidRouteError extends Error {
    constructor(message: string, options?: ErrorOptions);
}
/**
 * Validates that an {@link ApiRoute} has the minimum required structure:
 * a `match` pattern and at least one of `middleware` or `proxy`.
 *
 * @param route - The route definition to validate.
 * @throws {InvalidRouteError} When `route.match` is falsy.
 * @throws {InvalidRouteError} When neither `middleware` nor `proxy` is defined.
 */
export declare function validateRoute(route: ApiRoute): void;