//path是nodo.js里面的一个基本包const path = require('path');const HTMLPlugin = require('html-webpack-plugin');const webpack = require('webpack')const isDev = process.env.NODE_ENV === 'development';const config = {target: 'web',// __dirname 是指这个目录所在的地址,也就是根目录.就是和后面路径拼接起来,形成一个绝对路径,以保证可以访问到entry: path.join(__dirname, './src/index.js'),output: {filename: 'bundle.js',path: path.join(__dirname, 'dist'),},module: {rules: [{test: /\.vue$/,loader: 'vue-loader'},{test: /\.css$/,use: ['style-loader','css-loader']},{test: /\.(gif|png|jpg|jpeg|svg)$/,use: [{loader: 'url-loader',//url-loader参数配置options:{limit: 1024,name: '[name].[ext]'}}]},{test: /\.styl$/,use: ['style-loader','css-loader','stylus-loader']}]},plugins:[//判断工作环境是什么,打包的时候根据这个变量选择源代码的版本new webpack.DefinePlugin({'process.env': {NODE_ENV : isDev ? '"development"' : '"production"'}}),new HTMLPlugin()]}if(isDev){config.devSever = {port: 8000,host: '0.0.0.0',//overlay 编译错误,错误信息显示再网页上面overlay: {errors: true}}}module.exports = config