fix: restrict circular plugin support to eslint ^9

Author: Josh194

test/circular-plugin.test.js

@@ -1,34 +1,38 @@
 import pack from './utils/pack';
+import { ESLint } from 'eslint';
 
-describe('circular plugin', () => {
-  it('should support plugins with circular configs', async () => {
-    const plugin = {
-      configs: {},
-      rules: {},
-      processors: {},
-    };
+(ESLint && parseFloat(ESLint.version) < 9 ? describe.skip : describe)(
+  'circular plugin',
+  () => {
+    it('should support plugins with circular configs', async () => {
+      const plugin = {
+        configs: {},
+        rules: {},
+        processors: {},
+      };
 
-    Object.assign(plugin.configs, {
-      recommended: {
-        plugins: {
-          self: plugin,
+      Object.assign(plugin.configs, {
+        recommended: {
+          plugins: {
+            self: plugin,
+          },
+          rules: {},
         },
-        rules: {},
-      },
-    });
+      });
 
-    const loaderOptions = {
-      configType: 'flat',
-      overrideConfig: {
-        plugins: { plugin: plugin },
-      },
-      overrideConfigFile: true,
-    };
+      const loaderOptions = {
+        configType: 'flat',
+        overrideConfig: {
+          plugins: { plugin: plugin },
+        },
+        overrideConfigFile: true,
+      };
 
-    const compiler = pack('good', loaderOptions);
+      const compiler = pack('good', loaderOptions);
 
-    const stats = await compiler.runAsync();
-    expect(stats.hasWarnings()).toBe(false);
-    expect(stats.hasErrors()).toBe(false);
-  });
-});
+      const stats = await compiler.runAsync();
+      expect(stats.hasWarnings()).toBe(false);
+      expect(stats.hasErrors()).toBe(false);
+    });
+  },
+);