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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/@expo/cli/node_modules/graphql/validation/rules

Просмотр файла: UniqueVariableNamesRule.js

"use strict";

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

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

/**
 * Unique variable names
 *
 * A GraphQL operation is only valid if all its variables are uniquely named.
 */
function UniqueVariableNamesRule(context) {
  var knownVariableNames = Object.create(null);
  return {
    OperationDefinition: function OperationDefinition() {
      knownVariableNames = Object.create(null);
    },
    VariableDefinition: function VariableDefinition(node) {
      var variableName = node.variable.name.value;

      if (knownVariableNames[variableName]) {
        context.reportError(new _GraphQLError.GraphQLError("There can be only one variable named \"$".concat(variableName, "\"."), [knownVariableNames[variableName], node.variable.name]));
      } else {
        knownVariableNames[variableName] = node.variable.name;
      }
    }
  };
}

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