| import { GraphQLError } from "../../error/GraphQLError.mjs"; |
| |
| /** |
| * Unique argument names |
| * |
| * A GraphQL field or directive is only valid if all supplied arguments are |
| * uniquely named. |
| */ |
| export function UniqueArgumentNamesRule(context) { |
| var knownArgNames = Object.create(null); |
| return { |
| Field: function Field() { |
| knownArgNames = Object.create(null); |
| }, |
| Directive: function Directive() { |
| knownArgNames = Object.create(null); |
| }, |
| Argument: function Argument(node) { |
| var argName = node.name.value; |
| |
| if (knownArgNames[argName]) { |
| context.reportError(new GraphQLError("There can be only one argument named \"".concat(argName, "\"."), [knownArgNames[argName], node.name])); |
| } else { |
| knownArgNames[argName] = node.name; |
| } |
| |
| return false; |
| } |
| }; |
| } |