| 'use strict'; |
| |
| Object.defineProperty(exports, '__esModule', { |
| value: true, |
| }); |
| exports.LoneSchemaDefinitionRule = LoneSchemaDefinitionRule; |
| |
| var _GraphQLError = require('../../error/GraphQLError.js'); |
| |
| /** @category Validation Rules */ |
| |
| /** |
| * Lone Schema definition |
| * |
| * A GraphQL document is only valid if it contains only one schema definition. |
| * @param context - The validation context used while checking the document. |
| * @returns A visitor that reports validation errors for this rule. |
| * @example |
| * ```ts |
| * import { buildSchema } from 'graphql'; |
| * import { LoneSchemaDefinitionRule } from 'graphql/validation'; |
| * |
| * const invalidSDL = ` |
| * schema { query: Query } schema { query: Query } type Query { name: String } |
| * `; |
| * |
| * LoneSchemaDefinitionRule.name; // => 'LoneSchemaDefinitionRule' |
| * buildSchema(invalidSDL); // throws an error |
| * |
| * const validSDL = ` |
| * schema { query: Query } type Query { name: String } |
| * `; |
| * |
| * buildSchema(validSDL); // does not throw |
| * ``` |
| */ |
| function LoneSchemaDefinitionRule(context) { |
| var _ref, _ref2, _oldSchema$astNode; |
| |
| const oldSchema = context.getSchema(); |
| const alreadyDefined = |
| (_ref = |
| (_ref2 = |
| (_oldSchema$astNode = |
| oldSchema === null || oldSchema === void 0 |
| ? void 0 |
| : oldSchema.astNode) !== null && _oldSchema$astNode !== void 0 |
| ? _oldSchema$astNode |
| : oldSchema === null || oldSchema === void 0 |
| ? void 0 |
| : oldSchema.getQueryType()) !== null && _ref2 !== void 0 |
| ? _ref2 |
| : oldSchema === null || oldSchema === void 0 |
| ? void 0 |
| : oldSchema.getMutationType()) !== null && _ref !== void 0 |
| ? _ref |
| : oldSchema === null || oldSchema === void 0 |
| ? void 0 |
| : oldSchema.getSubscriptionType(); |
| let schemaDefinitionsCount = 0; |
| return { |
| SchemaDefinition(node) { |
| if (alreadyDefined) { |
| context.reportError( |
| new _GraphQLError.GraphQLError( |
| 'Cannot define a new schema within a schema extension.', |
| { |
| nodes: node, |
| }, |
| ), |
| ); |
| return; |
| } |
| |
| if (schemaDefinitionsCount > 0) { |
| context.reportError( |
| new _GraphQLError.GraphQLError( |
| 'Must provide only one schema definition.', |
| { |
| nodes: node, |
| }, |
| ), |
| ); |
| } |
| |
| ++schemaDefinitionsCount; |
| }, |
| }; |
| } |