| "use strict"; |
| |
| Object.defineProperty(exports, "__esModule", { |
| value: true |
| }); |
| exports.SingleFieldSubscriptionsRule = SingleFieldSubscriptionsRule; |
| |
| var _GraphQLError = require("../../error/GraphQLError"); |
| |
| /** |
| * Subscriptions must only include one field. |
| * |
| * A GraphQL subscription is valid only if it contains a single root field. |
| */ |
| function SingleFieldSubscriptionsRule(context) { |
| return { |
| OperationDefinition: function OperationDefinition(node) { |
| if (node.operation === 'subscription') { |
| if (node.selectionSet.selections.length !== 1) { |
| context.reportError(new _GraphQLError.GraphQLError(node.name ? "Subscription \"".concat(node.name.value, "\" must select only one top level field.") : 'Anonymous Subscription must select only one top level field.', node.selectionSet.selections.slice(1))); |
| } |
| } |
| } |
| }; |
| } |