SingleFieldSubscriptionsRule

Callable

• SingleFieldSubscriptionsRule(context: ValidationContext): ASTVisitor

---

• 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

  ---

  Parameters

  • context: ValidationContext

  Returns ASTVisitor