github-pages-deploy-action/node_modules/graphql/validation/rules/LoneSchemaDefinitionRule.js
2020-03-06 22:45:40 -05:00

36 lines
1.4 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.LoneSchemaDefinitionRule = LoneSchemaDefinitionRule;
var _GraphQLError = require("../../error/GraphQLError");
/**
* Lone Schema definition
*
* A GraphQL document is only valid if it contains only one schema definition.
*/
function LoneSchemaDefinitionRule(context) {
var _ref, _ref2, _ref3;
var oldSchema = context.getSchema();
var alreadyDefined = (_ref = (_ref2 = (_ref3 = oldSchema === null || oldSchema === void 0 ? void 0 : oldSchema.astNode) !== null && _ref3 !== void 0 ? _ref3 : 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();
var schemaDefinitionsCount = 0;
return {
SchemaDefinition: function SchemaDefinition(node) {
if (alreadyDefined) {
context.reportError(new _GraphQLError.GraphQLError('Cannot define a new schema within a schema extension.', node));
return;
}
if (schemaDefinitionsCount > 0) {
context.reportError(new _GraphQLError.GraphQLError('Must provide only one schema definition.', node));
}
++schemaDefinitionsCount;
}
};
}