fix: extended equality check

lib/__tests__/bundle.test.ts

@@ -0,0 +1,14 @@
+import path from 'node:path';
+
+import { describe, expect, it } from 'vitest';
+
+import { $RefParser } from '..';
+
+describe('bundle', () => {
+  it('handles circular reference with description', async () => {
+    const refParser = new $RefParser();
+    const pathOrUrlOrSchema = path.resolve('lib', '__tests__', 'spec', 'circular-ref-with-description.json');
+    const schema = await refParser.bundle({ pathOrUrlOrSchema });
+    expect(schema).not.toBeUndefined();
+  });
+});

lib/__tests__/spec/circular-ref-with-description.json

@@ -0,0 +1,11 @@
+{
+  "schemas": {
+    "Foo": {
+      "$ref": "#/schemas/Bar"
+    },
+    "Bar": {
+      "description": "ok",
+      "$ref": "#/schemas/Foo"
+    }
+  }
+}