webpack.config.js

const path = require("path")
const HTMLPlugin = require('html-webpack-plugin')
const webpack = require('webpack')
//准备优化
//单独将text打包静态文件
const ExtractPlugin=require('extract-text-webpack-plugin')

const isDev=process.env.NODE_ENV === 'development'

const config = {
    target:'web',
    entry:path.join(__dirname,'src/index.js'),
    output: {
        filename:'bundle.[hash:8].js',
        path: path.join(__dirname,'dist')
    },
    module: {
        rules: [
            {
                test: /.vue$/,
                loader: 'vue-loader'
            },
            {
                test: /.jsx$/,
                loader: 'babel-loader'
            },
            {
                test:/\.(gif|jpg|jpeg|png|svg)$/,
                use:[
                    {
                        loader:'url-loader',
                        options:{
                            limit:1024,
                            name:'[name]-aaa.[ext]'
                        }
                    }
                ]
            }
        ]
    },
    plugins: [
        new webpack.DefinePlugin({
            'process.env':{
                NODE_ENV: isDev ? '"development"' :'"production"'
            }
        }),
        new HTMLPlugin()
    ]
}

//区分开发环境和正式环境
if(isDev){
    config.module.rules.push({
        test:/\.styl/,
        use:[
            'style-loader',
            'css-loader',
            {
                loader: 'postcss-loader',
                options:{
                    sourceMap: true
                }
            },
            'stylus-loader'
        ]
    })
    config.devtool= '#cheap-module-eval-source-map'
    config.devServer = {
        port: 8000,
        host: '0.0.0.0',
        overlay: {
            errors: true,
        },
        hot :true
    }
    config.plugins.push(
        new webpack.HotModuleReplacementPlugin(),
        new webpack.NoEmitOnErrorsPlugin()
    )
} else{
    //打包vue文件
    config.entry = {
        app: path.join(__dirname,'src/index.js'),
        vendor: ['vue']
    }
    //单独打包使用chunkhash
    config.output.filename = '[name].[chunkhash:8].js'
    config.module.rules.push({
        test:/\.styl/,
        use: ExtractPlugin.extract({
            fallback: 'style-loader',
            use: [
                'css-loader',
                {
                    loader: 'postcss-loader',
                    options: {
                        sourceMap:true,
                    }
                },
                'stylus-loader'
            ]
        })
    })
    config.plugins.push(
        new ExtractPlugin('styles.[contentHash:8].css'),
        new webpack.optimize.CommonsChunkPlugin({
            name: 'vendor'
        }),
        //单独打包webpack
        new webpack.optimize.CommonsChunkPlugin({
            name: 'runtime'
        })
    )
}


module.exports=config