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';