import type { ValidationAcceptor } from 'langium';
import type { Relationship } from '../generated/ast.js';
/**
 * All relationship validation checks.
 * Each function receives a Relationship (DirectionalRelationship | SymmetricRelationship)
 * and guards internally for the correct subtype.
 */
export declare const relationshipChecks: Array<(relationship: Relationship, accept: ValidationAcceptor) => void>;