import type { ASTVisitor } from '../../language/visitor';
import type { ValidationContext } from '../ValidationContext';
/**
* Known fragment names
*
* A GraphQL document is only valid if all `...Fragment` fragment spreads refer
* to fragments defined in the same document.
* See https://spec.graphql.org/draft/#sec-Fragment-spread-target-defined
*/
export declare function KnownFragmentNamesRule(
context: ValidationContext,
): ASTVisitor;