先试用uni-ui吧

wxmp/bin/pages.js

@@ -4,7 +4,11 @@ const start = () => {
   chalkTag.info('开始生成pages.json...')
   let json = {
     easycom: {
-      "^(K|V)(.*)": "@/components/$1$2.vue"
+      autoscan: true,
+      custom: {
+        "^(K|V)(.*)": "@/components/$1$2.vue",
+        "^uni-(.*)": "@dcloudio/uni-ui/lib/uni-$1/uni-$1.vue"
+      }
     },
     pages: [
       {path: 'pages/home', style: {navigationBarTitleText: "buy-lite"}},

wxmp/package.json

@@ -21,6 +21,7 @@
     "@dcloudio/uni-mp-toutiao": "3.0.0-3061420221215001",
     "@dcloudio/uni-mp-weixin": "3.0.0-3061420221215001",
     "@dcloudio/uni-quickapp-webview": "3.0.0-3061420221215001",
+    "@dcloudio/uni-ui": "^1.4.23",
     "vue": "^3.2.45",
     "vue-i18n": "^9.1.9"
   },
@@ -34,6 +35,7 @@
     "fs-extra": "^11.1.0",
     "path": "^0.12.7",
     "sass": "^1.57.1",
+    "sass-loader": "^13.2.0",
     "vite": "^3.2.4"
   }
 }

wxmp/vite.config.js

@@ -2,6 +2,7 @@ import {defineConfig} from 'vite'
 import uni from '@dcloudio/vite-plugin-uni'
 
 export default defineConfig({
+  optimizeDeps: ['@dcloudio/uni-ui'],
   plugins: [
     uni(),
   ],