import { ASTValidator } from '../ast-validator';
import { DocumentNode } from 'graphql';
import { ValidationMessage } from '../../../model';
export declare const VALIDATION_ERROR_INDICES_ONLY_ON_ROOT_ENTITIES = "Indices are only allowed in root entity fields. You can add indices to fields of embedded objects with @rootEntities(indices: [...]).";
export declare class IndicesValidator implements ASTValidator {
    validate(ast: DocumentNode): ReadonlyArray<ValidationMessage>;
}