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- import { GraphQLError } from '../../error/GraphQLError';
- export function duplicateOperationNameMessage(operationName) {
- return "There can be only one operation named \"".concat(operationName, "\".");
- }
- export function UniqueOperationNames(context) {
- var knownOperationNames = Object.create(null);
- return {
- OperationDefinition: function OperationDefinition(node) {
- var operationName = node.name;
- if (operationName) {
- if (knownOperationNames[operationName.value]) {
- context.reportError(new GraphQLError(duplicateOperationNameMessage(operationName.value), [knownOperationNames[operationName.value], operationName]));
- } else {
- knownOperationNames[operationName.value] = operationName;
- }
- }
- return false;
- },
- FragmentDefinition: function FragmentDefinition() {
- return false;
- }
- };
- }
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