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'use strict';
Object.defineProperty(exports, '__esModule', {
value: true,
});
exports.LoneSchemaDefinitionRule = LoneSchemaDefinitionRule;
var _GraphQLError = require('../../error/GraphQLError.js');
/**
* Lone Schema definition
*
* A GraphQL document is only valid if it contains only one schema definition.
*/
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;
},
};
}
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