使用nuxt，按照官方示例引入vux，报错You may need an additional loader to handle the result of these loaders.

in ./node_modules/vux/src/components/v-chart/v-scale.vue friendly-errors 16:36:11
Module parse failed: Unexpected token (3:0) friendly-errors 16:36:11
File was processed with these loaders:
* ./node_modules/vux-loader/src/index.js
* ./node_modules/vue-loader/lib/index.js
You may need an additional loader to handle the result of these loaders.
| var render, staticRenderFns
| import script from "./v-scale.vue?vue&type=script&lang=js&"
> ../../../../vux-loader/src/script-loader.js!export * from "./v-scale.vue?vue&type=script&lang=js&"

extend(config, { isDev, isClient,loaders: {
less
} }) {
const configs = vuxLoader.merge(config, {
options: {
ssr: true
},
plugins: ['vux-ui', {
name: 'less-theme',
path: path.join(__dirname, './assets/less/theme.less')
}]
})
return configs
}