Integrate into validateTypes main type cycle

Author: IvanGoncharov

src/type/validate.js

@@ -232,7 +232,11 @@ function validateName(
 }
 
 function validateTypes(context: SchemaValidationContext): void {
+  const validateInputObjectCircularRefs = createInputObjectCircularRefsValidator(
+    context,
+  );
   const typeMap = context.schema.getTypeMap();
+
   objectValues(typeMap).forEach(type => {
     // Ensure all provided types are in fact GraphQL type.
     if (!isNamedType(type)) {
@@ -269,11 +273,11 @@ function validateTypes(context: SchemaValidationContext): void {
     } else if (isInputObjectType(type)) {
       // Ensure Input Object fields are valid.
       validateInputFields(context, type);
+
+      // Ensure Input Objects do not contain non-nullable circular references
+      validateInputObjectCircularRefs(type);
     }
   });
-
-  // Ensure Input Objects do not contain non-nullable circular references
-  validateInputObjectCircularReferences(context);
 }
 
 function validateFields(
@@ -581,9 +585,9 @@ function validateInputFields(
   });
 }
 
-function validateInputObjectCircularReferences(
+function createInputObjectCircularRefsValidator(
   context: SchemaValidationContext,
-): void {
+) {
   // Modified copy of algorithm from 'src/validation/rules/NoFragmentCycles.js'.
   // Tracks already visited types to maintain O(N) and to ensure that cycles
   // are not redundantly reported.
@@ -595,12 +599,7 @@ function validateInputObjectCircularReferences(
   // Position in the type path
   const fieldPathIndexByTypeName = Object.create(null);
 
-  const typeMap = context.schema.getTypeMap();
-  for (const type of objectValues(typeMap)) {
-    if (isInputObjectType(type)) {
-      detectCycleRecursive(type);
-    }
-  }
+  return detectCycleRecursive;
 
   // This does a straight-forward DFS to find cycles.
   // It does not terminate when a cycle was found but continues to explore