简述vue中的config配置

resolve: {  extensions: ['.js', '.vue', '.json', '.styl'],  alias: {   'vue$': 'vue/dist/vue.esm.js',   '@': resolve('src'),   'src': path.resolve(__dirname, '../src'),   'common': path.resolve(__dirname, '../src/common'),   'components': path.resolve(__dirname, '../src/components')  } }

import Vue from 'vue';import App from './App';import Router from 'vue-router';//components前面可以加上'@/'，也可以省略不写//如果没有别名，就要写成“import goods from '../components/goods/goods';“import goods from 'components/goods/goods';import seller from 'components/seller/seller';import ratings from 'components/ratings/ratings';import '@/common/stylus/index';