@graphql-tools/graphql
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Fork of GraphQL.js
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JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.LoneSchemaDefinitionRule = void 0;
const GraphQLError_js_1 = require("../../error/GraphQLError.js");
/**
* Lone Schema definition
*
* A GraphQL document is only valid if it contains only one schema definition.
*/
function LoneSchemaDefinitionRule(context) {
var _a, _b, _c;
const oldSchema = context.getSchema();
const alreadyDefined = (_c = (_b = (_a = oldSchema === null || oldSchema === void 0 ? void 0 : oldSchema.astNode) !== null && _a !== void 0 ? _a : oldSchema === null || oldSchema === void 0 ? void 0 : oldSchema.getQueryType()) !== null && _b !== void 0 ? _b : oldSchema === null || oldSchema === void 0 ? void 0 : oldSchema.getMutationType()) !== null && _c !== void 0 ? _c : oldSchema === null || oldSchema === void 0 ? void 0 : oldSchema.getSubscriptionType();
let schemaDefinitionsCount = 0;
return {
SchemaDefinition(node) {
if (alreadyDefined) {
context.reportError(new GraphQLError_js_1.GraphQLError('Cannot define a new schema within a schema extension.', { nodes: node }));
return;
}
if (schemaDefinitionsCount > 0) {
context.reportError(new GraphQLError_js_1.GraphQLError('Must provide only one schema definition.', {
nodes: node,
}));
}
++schemaDefinitionsCount;
},
};
}
exports.LoneSchemaDefinitionRule = LoneSchemaDefinitionRule;