| import type { ASTVisitor } from '../../language/visitor'; |
| import type { ValidationContext } from '../ValidationContext'; |
| /** |
| * Subscriptions must only include a non-introspection field. |
| * |
| * A GraphQL subscription is valid only if it contains a single root field and |
| * that root field is not an introspection field. |
| * |
| * See https://spec.graphql.org/draft/#sec-Single-root-field |
| */ |
| export declare function SingleFieldSubscriptionsRule( |
| context: ValidationContext, |
| ): ASTVisitor; |