import { GraphQLError, TypeInfo, ValidationContext } from "graphql";
import { GraphQLSchema } from "graphql/type/schema";
import { DocumentNode } from "graphql/language/ast";
/**
 * This class is used to test that validation errors are raised correctly
 *
 * A compatibility layer is necessary to support graphql versions since 15.0.0
 * *as well as* versions prior to 14.5.0 with the same test, because older
 * versions of `ValidationContext` only expose a `getErrors` API and newer
 * versions only expose the `onError` API via a fourth constructor argument.
 *
 * Once we drop support for versions older than 14.5.0 this layer will no
 * longer be necessary and tests may use `ValidationContext` directly using the
 * `onError` API.
 */
export declare class CompatibleValidationContext extends ValidationContext {
    private errors;
    constructor(schema: GraphQLSchema, ast: DocumentNode, typeInfo: TypeInfo);
    getErrors(): ReadonlyArray<GraphQLError>;
}