feat(cli): less-loader resolve node_modules

packages/vant-cli/src/config/webpack.base.ts

@@ -1,8 +1,10 @@
 // @ts-ignore
 import FriendlyErrorsPlugin from '@nuxt/friendly-errors-webpack-plugin';
 import sass from 'sass';
+import { resolve } from 'path';
 import { VueLoaderPlugin } from 'vue-loader';
 import {
+  CWD,
   STYLE_EXTS,
   SCRIPT_EXTS,
   POSTCSS_CONFIG_FILE
@@ -56,7 +58,15 @@ export const baseConfig = {
       {
         test: /\.less$/,
         sideEffects: true,
-        use: [...CSS_LOADERS, 'less-loader']
+        use: [
+          ...CSS_LOADERS,
+          {
+            loader: 'less-loader',
+            options: {
+              paths: [resolve(CWD, 'node_modules')]
+            }
+          }
+        ]
       },
       {
         test: /\.scss$/,