webpack.config.js

const path = require('path');
var CopyWebpackPlugin = require('copy-webpack-plugin');

module.exports = {
    entry: './src/index.js',
    devtool: 'inline-source-map',
    devServer: {
        contentBase: './build'
    },
    output: {
        filename: 'bundle.js',
        path: path.resolve(__dirname, 'build')
    },
    plugins: [
        new CopyWebpackPlugin([{
          //from: './src/*.html',
          from: './public/*.*',
          flatten: true
        }])
      ],
    module: {
        
        rules: [
            {
                test: /\.css$/,
                use: [
                    'style-loader',
                    'css-loader'
                ]
            },
            {
                test: /\.(png|svg|jpg|gif|woff|woff2|ttf|eot)$/,
                use: [
                    //'file-loader?name=[name].[ext]'
                    'file-loader'
                ]
            },
            {
                test: /\.js$/,
                exclude: /(node_modules|bower_components)/,
                use: {
                  loader: 'babel-loader',
                  options: {
                      presets: ['env']
                  }
                }
              } 
        ]
    }

};