//// webpack.conf

const HtmlWebpackPlugin = require('html-webpack-plugin');
const path = require('path');

module.exports = (env, argv) =>  ({
    entry: path.resolve(__dirname, 'src/scripts/index.js'),
    devServer: {
        contentBase: path.join(__dirname, '.'),
        compress: true,
        port: 8080
    },
    devtool:  argv.mode === 'production' ? false : 'source-map',
    mode: argv.mode || 'development',
    output: {
        filename: 'bundle.js',
        path: path.resolve(__dirname, 'dist')
    },
    plugins: [new HtmlWebpackPlugin()],
    module: {
        rules: [
            {
                test: /\.js$/,
                exclude: /node_modules/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        presets: ['@babel/preset-env'],
                        cacheDirectory: true
                    },
                }
            },
            {
                test: /\.s?css$/,
                use: [
                    'style-loader',
                    {
                        loader: 'css-loader',
                        options: {
                            sourceMap: argv.mode !== 'production'
                        }
                    },
                    {
                        loader: 'postcss-loader',
                        options: {
                            ident: 'postcss',
                            plugins: [
                                require('autoprefixer'),
                            ]
                        }
                    },
                    'sass-loader'
                ]
            },
            {
                test: /\.(png|jpg|gif|svg|eot|ttf|woff|woff2)$/i,
                use: [
                    'url-loader?limit=10000',
                    {
                        loader: 'img-loader',
                        options: {
                            plugins: [
                                require('imagemin-gifsicle')({
                                    interlaced: false
                                }),
                                require('imagemin-mozjpeg')({
                                    progressive: true,
                                    arithmetic: false
                                }),
                                require('imagemin-pngquant')({
                                    floyd: 0.5,
                                    speed: 2
                                }),
                                require('imagemin-svgo')({
                                    plugins: [
                                        { removeTitle: true },
                                        { convertPathData: false }
                                    ]
                                })
                            ]
                        }
                    }
                ]
            },
        ]
    }
})




/// package.json

  "scripts": {
    "start:dev": "webpack-dev-server",
    "build": "webpack --mode production"
  },

  "browserslist": [
    "defaults",
    "not ie < 11",
    "last 2 versions",
    "> 1%",
    "iOS 7",
    "last 3 iOS versions"
  ]