WIP - add extractor, generate snippet_data

node_modules/graphql/validation/rules/UniqueEnumValueNames.mjs

@@ -0,0 +1,69 @@
+import { GraphQLError } from '../../error/GraphQLError';
+import { isEnumType } from '../../type/definition';
+export function duplicateEnumValueNameMessage(typeName, valueName) {
+  return "Enum value \"".concat(typeName, ".").concat(valueName, "\" can only be defined once.");
+}
+export function existedEnumValueNameMessage(typeName, valueName) {
+  return "Enum value \"".concat(typeName, ".").concat(valueName, "\" already exists in the schema. It cannot also be defined in this type extension.");
+}
+/**
+ * Unique enum value names
+ *
+ * A GraphQL enum type is only valid if all its values are uniquely named.
+ */
+
+export function UniqueEnumValueNames(context) {
+  var schema = context.getSchema();
+  var existingTypeMap = schema ? schema.getTypeMap() : Object.create(null);
+  var knownValueNames = Object.create(null);
+  return {
+    EnumTypeDefinition: checkValueUniqueness,
+    EnumTypeExtension: checkValueUniqueness
+  };
+
+  function checkValueUniqueness(node) {
+    var typeName = node.name.value;
+
+    if (!knownValueNames[typeName]) {
+      knownValueNames[typeName] = Object.create(null);
+    }
+
+    if (node.values) {
+      var valueNames = knownValueNames[typeName];
+      var _iteratorNormalCompletion = true;
+      var _didIteratorError = false;
+      var _iteratorError = undefined;
+
+      try {
+        for (var _iterator = node.values[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
+          var valueDef = _step.value;
+          var valueName = valueDef.name.value;
+          var existingType = existingTypeMap[typeName];
+
+          if (isEnumType(existingType) && existingType.getValue(valueName)) {
+            context.reportError(new GraphQLError(existedEnumValueNameMessage(typeName, valueName), valueDef.name));
+          } else if (valueNames[valueName]) {
+            context.reportError(new GraphQLError(duplicateEnumValueNameMessage(typeName, valueName), [valueNames[valueName], valueDef.name]));
+          } else {
+            valueNames[valueName] = valueDef.name;
+          }
+        }
+      } catch (err) {
+        _didIteratorError = true;
+        _iteratorError = err;
+      } finally {
+        try {
+          if (!_iteratorNormalCompletion && _iterator.return != null) {
+            _iterator.return();
+          }
+        } finally {
+          if (_didIteratorError) {
+            throw _iteratorError;
+          }
+        }
+      }
+    }
+
+    return false;
+  }
+}