CI: Set new eslint configuration file

.eslintrc.json

@@ -1,19 +0,0 @@
-{
-  "root": true,
-  "parser": "vue-eslint-parser",
-  "parserOptions": {
-    "ecmaVersion": 2020,
-    "sourceType": "module"
-    //"parser": "babel-eslint"
-  },
-  "env": {
-    "browser": true,
-    "node": true,
-    "es6": true
-  },
-  "extends": [
-    "eslint:recommended",
-    "plugin:vue/vue3-recommended",
-    "prettier"
-  ]
-}

eslint.config.mjs

@@ -0,0 +1,18 @@
+import globals from "globals"
+import pluginJs from "@eslint/js"
+import pluginVue from "eslint-plugin-vue"
+import pluginPrettierRecommended from "eslint-plugin-prettier/recommended"
+
+export default [
+  {
+    files: ["**/*.{js,mjs,cjs,vue}"],
+  },
+  {
+    languageOptions: {
+      globals: globals.browser,
+    },
+  },
+  pluginJs.configs.recommended,
+  ...pluginVue.configs["flat/essential"],
+  pluginPrettierRecommended,
+]