开发、测试、生产环境的公共基础配置文件，配置输出环境，配置模块resolve和插件等

‘use strict’

const path = require(‘path’)// node自带的文件路径工具

const utils = require(’./utils’)// 工具函数集合

const config = require(’…/config’)// 配置文件

const vueLoaderConfig = require(’./vue-loader.conf’)// 工具函数集合

/**

• 获取"绝对路径"

• @method resolve

• @param {String} dir 相对于本文件的路径

• @return {String} 绝对路径

*/

function resolve(dir) {

return path.join(__dirname, ‘…’, dir)

}

module.exports = {

context: path.resolve(__dirname, ‘…/’),

//入口js文件(默认为单页面所以只有app一个入口)

entry: {

app: ‘./src/main.js’

},

//配置出口

output: {

path: config.build.assetsRoot,//打包编译的根路径(dist)

filename: ‘[name].js’,

publicPath: process.env.NODE_ENV === ‘production’

? config.build.assetsPublicPath

config.dev.assetsPublicPath//发布路径

},

resolve: {

extensions: [’.js’, ‘.vue’, ‘.json’],// 自动补全的扩展名

//别名配置

alias: {

‘vue$’: ‘vue/dist/vue.esm.js’,

‘@’: resolve(‘src’),// eg:“src/components” => “@/components”

}

},

module: {

rules: [

//使用vue-loader将vue文件编译转换为js

{

test: /.vue$/,

loader: ‘vue-loader’,

options: vueLoaderConfig

},

//通过babel-loader将ES6编译压缩成ES5

{

test: /.js$/,

loader: ‘babel-loader’,

include: [resolve(‘src’), resolve(‘test’), resolve(‘node_modules/webpack-dev-server/client’)]

},

//使用url-loader处理(图片、音像、字体)，超过10000编译成

{

test: /.(png|jpe?g|gif|svg)(?.*)?$/,

loader: ‘url-loader’,

options: {

limit: 10000,

name: utils.assetsPath(‘img/[name].[hash:7].[ext]’)

}

},

{

test: /.(mp4|webm|ogg|mp3|wav|flac|aac)(?.*)?$/,

loader: ‘url-loader’,

options: {

limit: 10000,

name: utils.assetsPath(‘media/[name].[hash:7].[ext]’)

}

},

{

test: /.(woff2?|eot|ttf|otf)(?.*)?$/,

loader: ‘url-loader’,

options: {

limit: 10000,

name: utils.assetsPath(‘fonts/[name].[hash:7].[ext]’)

}

}

]

},

//nodeJs全局变量/模块，防止webpack注入一些nodeJs的东西到vue中

node: {

setImmediate: false,

dgram: ‘empty’,

fs: ‘empty’,

net: ‘empty’,

tls: ‘empty’,

child_process: ‘empty’

}

}