refactor: migrate plugin to TS

Author: 9romise

lib/configs/flat/base.js

@@ -8,7 +8,7 @@ module.exports = [
     name: 'vue/base/setup',
     plugins: {
       get vue() {
-        return require('../../plugin')
+        return require('../../plugin.ts').default
       }
     },
     languageOptions: {
@@ -20,7 +20,7 @@ module.exports = [
     files: ['*.vue', '**/*.vue'],
     plugins: {
       get vue() {
-        return require('../../plugin')
+        return require('../../plugin.ts').default
       }
     },
     languageOptions: {

lib/index.ts

@@ -1,4 +1,4 @@
 import configs from './configs/index.js'
-import plugin from './plugin.js'
+import plugin from './plugin.ts'
 
 export default Object.assign(plugin, { configs })