webpack.config.js

const path = require('path')
const webpack = require('webpack')
// const ExtractTextPlugin = require("extract-text-webpack-plugin");
const HtmlWebpackPlugin = require('html-webpack-plugin')
// const CleanWebpackPlugin = require('clean-webpack-plugin')

// const extractCSS = new ExtractTextPlugin({
//     filename: "[name].css"
// });


module.exports = {
    entry: {
        app: './src/index.js'
    },
    devtool: 'source-map',
    devServer: {
        contentBase: './dist',
        hot: true
    },
    module: {
        rules: [{
                test: /\.scss$/,
                use: [
                    { loader: 'style-loader' },
                    {
                        loader: 'css-loader',
                        options: {
                            sourceMap: true
                        }
                    },
                    {
                        loader: 'sass-loader',
                        options: {
                            sourceMap: true
                        }
                    }
                ]
            },
            {
                test: /\.js$/,
                exclude: /node_modules/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        
                    }
                }

            },
            {
                test: /\.(png|svg|jpg|gif)$/,
                use: [
                    'file-loader'
                ]
            },
            {
                test: /\.(html)$/,
                use: {
                  loader: 'html-loader',
                  options: {
                    attrs: [':data-src']
                  }
                }
            },

            // 测试
            {
                test: /test\.js$/,
                use: 'mocha-loader',
                exclude: /node_modules/
            }
           

            // {
            //     test: /\.rgl$/,
            //     use: [
            //         'rgl-loader'
            //     ] ,
            // }
        ]
    },
    plugins: [
        // new CleanWebpackPlugin(['dist']),
        new HtmlWebpackPlugin({
            title: 'Output Mangement',
            template: '!html-loader!./src/index.html'
        }),

        // extractCSS,

        new webpack.HotModuleReplacementPlugin()
    ],

    output: {
        filename: '[name].bundle.js',
        path: path.resolve(__dirname, 'dist')
    },

}