style: prevent use of .ts, .js import

docs/.vitepress/components/HomeButton.vue

@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import type { ButtonItem } from '../theme/config.ts'
+import type { ButtonItem } from '../theme/config'
 
 defineProps<{
   item: ButtonItem

docs/.vitepress/components/HomeButtonSet.vue

@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import type { ButtonItem } from '../theme/config.ts'
+import type { ButtonItem } from '../theme/config'
 
 import HomeButton from './HomeButton.vue'
 

docs/.vitepress/config.ts

@@ -1,6 +1,6 @@
 import type { DefaultTheme } from 'vitepress'
 
-import type { ThemeConfig } from './theme/config.ts'
+import type { ThemeConfig } from './theme/config'
 
 import { join, posix, resolve } from 'node:path'
 import { env } from 'node:process'
@@ -15,7 +15,7 @@ import { tasklist } from '@mdit/plugin-tasklist'
 import { defineConfig, postcssIsolateStyles } from 'vitepress'
 
 import { version } from '../../package.json'
-import { webLive } from './constants.ts'
+import { webLive } from './constants'
 import { teamMembers } from './contributors'
 import {
   discord,