iview框架，npm run dev报错：error in ./src/index.less

使用iview框架，npm run dev报错：

 error  in ./src/index.less  Module build failed (from ./node_modules/less-loader/dist/cjs.js):

解决方式：vue.config.js文件添加如下代码

module.exports = { css: { loaderOptions: { less: { javascriptEnabled: true, } } },}