chore: Update TS rule tester

package.json

@@ -41,7 +41,7 @@
     "eslint": ">=8.56.0"
   },
   "dependencies": {
-    "@typescript-eslint/utils": "^8.11.0",
+    "@typescript-eslint/utils": "^8.12.1",
     "isomorphic-resolve": "^1.0.0",
     "natural-compare": "^1.4.0"
   },
@@ -51,7 +51,7 @@
     "@types/dedent": "^0.7.0",
     "@types/estree": "^1.0.6",
     "@types/natural-compare": "^1.4.1",
-    "@typescript-eslint/rule-tester": "^8.11.0",
+    "@typescript-eslint/rule-tester": "^8.12.1",
     "bun-types": "^1.0.1",
     "dedent": "^0.7.0",
     "eslint": "^9.13.0",

src/__tests__/type-properties.spec.ts

@@ -126,9 +126,10 @@ ruleTester.run("type-properties", rule, {
     // Nested
     {
       code: "interface A {b:string; a:{b:string; a:number}}",
-      output: "interface A {a:{b:string; a:number}; b:string}",
-      // Rule tester will not run multiple fix iterations, but as long as we
-      // have two errors, we know the nested rule was caught.
+      output: [
+        "interface A {a:{b:string; a:number}; b:string}",
+        "interface A {a:{a:number; b:string}; b:string}",
+      ],
       errors: [{ messageId: "unsorted" }, { messageId: "unsorted" }],
     },
 

src/test-utils.ts

@@ -45,10 +45,7 @@ export function createRuleTester(config?: Linter.Config) {
 }
 
 export function createTsRuleTester(config?: Linter.Config) {
-  // TSRuleTester is broken
-  // https://github.com/typescript-eslint/typescript-eslint/issues/9676
-  // https://github.com/typescript-eslint/typescript-eslint/issues/10191
-  return new RuleTester({
+  return new TSRuleTester({
     ...config,
     languageOptions: {
       ...config?.languageOptions,
@@ -59,5 +56,5 @@ export function createTsRuleTester(config?: Linter.Config) {
         ...config?.languageOptions?.parserOptions,
       },
     },
-  }) as unknown as TSRuleTester
+  })
 }