import { Diagnostics } from './diagnostics.js';
import { TracerouteAssertion } from './traceroute-assertion.js';
/**
 * Reports traceroute assertions whose source, property or comparison the backend
 * does not accept.
 *
 * Assertions written as plain object literals bypass TracerouteAssertionBuilder and
 * are type-legal, because the fields are declared as plain strings. The backend
 * rejects the invalid combinations with a 400, so they are caught here instead.
 */
export declare function validateTracerouteAssertion(diagnostics: Diagnostics, assertion: TracerouteAssertion, index: number): void;