fix: only use eslint in JavaScript (#241)

Author: Nikkolast88

packages/eslint-config-vue/index.js

@@ -11,7 +11,7 @@ module.exports = {
       files: ['*.vue'],
       parser: 'vue-eslint-parser',
       parserOptions: {
-        parser: '@typescript-eslint/parser',
+        parser: TS ? '@typescript-eslint/parser' : null,
       },
       rules: {
         'no-unused-vars': 'off',