webpack.config.js

const path = require('path')
const HtmlPlugin = require('html-webpack-plugin')
const webpack = require('webpack')
const ExtractPlugin = require('extract-text-webpack-plugin')
const PreloadWebpackPlugin = require('preload-webpack-plugin');

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

        },
        open: true,
        // historyFallback:{

        // }
        hot: true
    }
    config.plugins.push(
        new webpack.HotModuleReplacementPlugin(),
        new webpack.NoEmitOnErrorsPlugin()
    )
} else {
    config.entry = {
        app: path.join(__dirname, 'src/index.js'),
        vendor: ['vue']//单独打包成vendor.js
    }
    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('style.[contentHash:8].css'),
        new webpack.optimize.CommonsChunkPlugin({
            name: 'vendor'
        }),
        new webpack.optimize.CommonsChunkPlugin({
            name: 'runtime'
        })
    )
}
module.exports = config