ok commonjs it is

eslint.config.js

@@ -1,8 +1,8 @@
-import pluginVue from 'eslint-plugin-vue'
-import js from '@eslint/js'
-import globals from "globals";
+const pluginVue = require('eslint-plugin-vue')
+const js = require('@eslint/js')
+const globals = require("globals");
 
-export default [
+module.exports = [
   js.configs.recommended,
   //pluginN.configs["flat/recommended"],
   ...pluginVue.configs['flat/recommended'],
@@ -18,7 +18,6 @@ export default [
         ...globals.commonjs,
         ...globals.node,
         ...globals.nodeBuiltin,
-        ...globals.serviceworker,
         'COMMIT_HASH': 'readonly',
         'DEV_OVERRIDES': 'readonly'
       }
@@ -32,8 +31,7 @@ export default [
         "vars": "all",
         "args": "after-used",
         "ignoreRestSiblings": true
-      }],
-      'vue/no-unused-vars': ["warn", {}]
+      }]
     },
     ignores: [
       'build/*.js',

package.json

@@ -4,7 +4,7 @@
   "description": "A frontend for Akkoma instances",
   "author": "Roger Braun <roger@rogerbraun.net>",
   "private": true,
-  "type": "module",
+  "type": "commonjs",
   "scripts": {
     "dev": "node build/dev-server.js",
     "build": "node build/build.js",