flow like the river

BACK_BACK/node_modules/graphql/validation/rules/KnownArgumentNamesRule.mjs

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+function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }
+
+function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }
+
+function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
+
+import didYouMean from "../../jsutils/didYouMean.mjs";
+import suggestionList from "../../jsutils/suggestionList.mjs";
+import { GraphQLError } from "../../error/GraphQLError.mjs";
+import { Kind } from "../../language/kinds.mjs";
+import { specifiedDirectives } from "../../type/directives.mjs";
+
+/**
+ * Known argument names
+ *
+ * A GraphQL field is only valid if all supplied arguments are defined by
+ * that field.
+ */
+export function KnownArgumentNamesRule(context) {
+  return _objectSpread(_objectSpread({}, KnownArgumentNamesOnDirectivesRule(context)), {}, {
+    Argument: function Argument(argNode) {
+      var argDef = context.getArgument();
+      var fieldDef = context.getFieldDef();
+      var parentType = context.getParentType();
+
+      if (!argDef && fieldDef && parentType) {
+        var argName = argNode.name.value;
+        var knownArgsNames = fieldDef.args.map(function (arg) {
+          return arg.name;
+        });
+        var suggestions = suggestionList(argName, knownArgsNames);
+        context.reportError(new GraphQLError("Unknown argument \"".concat(argName, "\" on field \"").concat(parentType.name, ".").concat(fieldDef.name, "\".") + didYouMean(suggestions), argNode));
+      }
+    }
+  });
+}
+/**
+ * @internal
+ */
+
+export function KnownArgumentNamesOnDirectivesRule(context) {
+  var directiveArgs = Object.create(null);
+  var schema = context.getSchema();
+  var definedDirectives = schema ? schema.getDirectives() : specifiedDirectives;
+
+  for (var _i2 = 0; _i2 < definedDirectives.length; _i2++) {
+    var directive = definedDirectives[_i2];
+    directiveArgs[directive.name] = directive.args.map(function (arg) {
+      return arg.name;
+    });
+  }
+
+  var astDefinitions = context.getDocument().definitions;
+
+  for (var _i4 = 0; _i4 < astDefinitions.length; _i4++) {
+    var def = astDefinitions[_i4];
+
+    if (def.kind === Kind.DIRECTIVE_DEFINITION) {
+      var _def$arguments;
+
+      // istanbul ignore next (See: 'https://github.com/graphql/graphql-js/issues/2203')
+      var argsNodes = (_def$arguments = def.arguments) !== null && _def$arguments !== void 0 ? _def$arguments : [];
+      directiveArgs[def.name.value] = argsNodes.map(function (arg) {
+        return arg.name.value;
+      });
+    }
+  }
+
+  return {
+    Directive: function Directive(directiveNode) {
+      var directiveName = directiveNode.name.value;
+      var knownArgs = directiveArgs[directiveName];
+
+      if (directiveNode.arguments && knownArgs) {
+        for (var _i6 = 0, _directiveNode$argume2 = directiveNode.arguments; _i6 < _directiveNode$argume2.length; _i6++) {
+          var argNode = _directiveNode$argume2[_i6];
+          var argName = argNode.name.value;
+
+          if (knownArgs.indexOf(argName) === -1) {
+            var suggestions = suggestionList(argName, knownArgs);
+            context.reportError(new GraphQLError("Unknown argument \"".concat(argName, "\" on directive \"@").concat(directiveName, "\".") + didYouMean(suggestions), argNode));
+          }
+        }
+      }
+
+      return false;
+    }
+  };
+}