feat(build): umd 构建，支持 <script> 直接引入使用

script/build.umd.ts

@@ -0,0 +1,40 @@
+import { UserConfigExport } from 'vite'
+import vue from '@vitejs/plugin-vue'
+import { resolve } from 'path'
+
+export default (): UserConfigExport => {
+  return {
+    publicDir: false,
+    resolve: {
+      alias: [
+        {
+          find: '@',
+          replacement: resolve(process.cwd(), './')
+        }
+      ]
+    },
+    plugins: [
+      vue(),
+    ],
+    build: {
+      cssCodeSplit: false,
+      outDir: 'umd',
+      emptyOutDir: true,
+      lib: {
+        entry: resolve(process.cwd(), './src/index.ts'),
+        name: 'LayuiVue',
+        formats: ['umd'],
+        fileName: (name) => `index.js`
+      },
+      rollupOptions: {
+        output: {
+          globals: {
+            vue: 'Vue'
+          },
+          assetFileNames: 'index.css',
+        },
+        external: ['vue', 'vue-router']
+      }
+    }
+  }
+}