migrate to eslint 9 syntax

eslint.config.js

@@ -0,0 +1,31 @@
+const pluginVue = require('eslint-plugin-vue')
+const pluginImport = require('eslint-plugin-import')
+
+module.exports = [
+  ...pluginVue.configs['flat/recommended'],
+  {
+    languageOptions: {
+      parserOptions: {
+        parser: '@babel/eslint-parser',
+        sourceType: 'module'
+      }
+    },
+    rules: {
+      // allow paren-less arrow functions
+      'arrow-parens': 0,
+      // allow async-await
+      'generator-star-spacing': 0,
+      // allow debugger during development
+      'no-debugger': process.env.NODE_ENV === 'production' ? 2 : 0,
+      'vue/require-prop-types': 0,
+      'vue/no-unused-vars': 0,
+      'no-tabs': 0,
+      'vue/multi-word-component-names': 0,
+      'vue/no-reserved-component-names': 0
+    },
+    ignores: [
+      'build/*.js',
+      'config/*.js'
+    ]
+  }
+]