chore: drop compat entirely

Author: 43081j

Diff for: packages/eslint-plugin-svelte/package.json

@@ -84,7 +84,6 @@
     "acorn": "^8.14.0",
     "assert": "^2.1.0",
     "esbuild": "^0.25.0",
-    "eslint-compat-utils": "^0.6.4",
     "eslint-scope": "^8.2.0",
     "eslint-typegen": "^2.0.0",
     "eslint-visitor-keys": "^4.2.0",

Diff for: packages/eslint-plugin-svelte/tests/utils/eslint-compat.ts

@@ -1,3 +1,9 @@
-import { getRuleTester } from 'eslint-compat-utils/rule-tester';
+import * as eslint from 'eslint';
+import * as experimental from 'eslint/use-at-your-own-risk';
 
-export const RuleTester = getRuleTester();
+type MaybeHasRuleTester = {
+	FlatRuleTester?: typeof eslint.RuleTester;
+};
+
+export const RuleTester =
+	(experimental as never as MaybeHasRuleTester).FlatRuleTester ?? eslint.RuleTester;