import type { ASTVisitor } from '../../language/visitor';
import type {
SDLValidationContext,
ValidationContext,
} from '../ValidationContext';
/**
* Known directives
*
* A GraphQL document is only valid if all `@directives` are known by the
* schema and legally positioned.
* See https://spec.graphql.org/draft/#sec-Directives-Are-Defined
*/
export declare function KnownDirectivesRule(
context: ValidationContext | SDLValidationContext,
): ASTVisitor;