graphql/validation/rules/UniqueOperationNames.js

A Query Language and Runtime which can target any service.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.duplicateOperationNameMessage = duplicateOperationNameMessage;
exports.UniqueOperationNames = UniqueOperationNames;

var _GraphQLError = require("../../error/GraphQLError");

/**
 * Copyright (c) 2015-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 *  strict
 */
function duplicateOperationNameMessage(operationName) {
  return "There can be only one operation named \"".concat(operationName, "\".");
}
/**
 * Unique operation names
 *
 * A GraphQL document is only valid if all defined operations have unique names.
 */


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.GraphQLError(duplicateOperationNameMessage(operationName.value), [knownOperationNames[operationName.value], operationName]));
        } else {
          knownOperationNames[operationName.value] = operationName;
        }
      }

      return false;
    },
    FragmentDefinition: function FragmentDefinition() {
      return false;
    }
  };
}