graphql/validation/rules/LoneSchemaDefinitionRule.d.ts

import type { ASTVisitor } from '../../language/visitor';
import type { SDLValidationContext } from '../ValidationContext';
/**
 * Lone Schema definition
 *
 * A GraphQL document is only valid if it contains only one schema definition.
 */
export declare function LoneSchemaDefinitionRule(
  context: SDLValidationContext,
): ASTVisitor;