Fix local rules

src/index.ts

@@ -9,7 +9,7 @@ import type { Middleware, MiddlewareConfig, MiddlewareFunctions } from './middle
 import { importTypeScript } from './presets/typescript';
 import { unicorn } from './presets/unicorn';
 import { eslintRules } from './presets/eslint';
-import { local } from './presets/local';
+import { custom } from './presets/custom';
 import { error, warn, off } from './constants';
 import { checkEnv } from './env';
 
@@ -41,14 +41,14 @@ type RuleEntry<Options> = RuleLevel | [RuleLevel, Partial<Options>];
 
 export interface LocalRuleOptions {
   /** Bans import from the specifier '.' and '..' and replaces it with '.+/index' */
-  'rules/no-import-dot': RuleEntry<unknown>;
+  'custom/no-import-dot': RuleEntry<unknown>;
   /**
    * Enforce template literal expressions to be of `string` type
    * @see [restrict-template-expressions](https://typescript-eslint.io/rules/restrict-template-expressions)
    */
-  'rules/restrict-template-expressions': RuleEntry<{ allow: string[] }>;
+  'custom/restrict-template-expressions': RuleEntry<{ allow: string[] }>;
   /** Ban assignment of empty object literals `{}` and replace them with `Object.create(null)` */
-  'rules/no-empty-object-literal': RuleEntry<unknown>;
+  'custom/no-empty-object-literal': RuleEntry<unknown>;
 }
 
 export type RuleOptions = Rules & Partial<LocalRuleOptions>;
@@ -121,25 +121,27 @@ export function extendConfig(
     customRuleFiles,
     parserOptions,
     middlewares: _middlewares = [],
-    // @ts-expect-error
-    localRules: _,
     ...rest
   } = of;
 
   let plugins: Plugin[] = [..._plugins];
   let extend: Extends[] = ensureArray(_extends);
 
+  if (customRuleFiles != null) {
+    plugins.push('local');
+  }
+
   const middlewares: Middleware[] = uniq([
     importTypeScript,
     unicorn,
-    local,
+    custom,
     ...(auto ? checkEnv() : []),
     ..._middlewares,
   ]);
 
   const result: MiddlewareConfig = {
     root: true,
-    plugins: unique('rules', plugins),
+    plugins: unique('custom', plugins),
     env: { node: true, browser: true, es2023: true },
     reportUnusedDisableDirectives: true,
     parserOptions: {