webpack.prod.js

const path = require('path');
const webpack = require('webpack');

const FaviconsWebpackPlugin = require('favicons-webpack-plugin')
const CleanWebpackPlugin = require('clean-webpack-plugin');
const sassLintPlugin = require('sasslint-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const OptimizeCssAssetsPlugin = require('optimize-css-assets-webpack-plugin');

const buildPath = path.resolve(__dirname, 'dist');

module.exports = {
    devtool: 'source-map',
    entry: ['babel-polyfill', './src/index.js'],
    output: {
        filename: '[name].[hash:20].js',
        path: buildPath
    },
    module: {
        rules: [
            {
                enforce: "pre",
                test: /\.js$/,
                exclude: /node_modules/,
                loader: "eslint-loader",
            }, {
                test: /\.js$/,
                exclude: /node_modules/,
                loader: 'babel-loader',

                options: {
                    presets: ['es2015']
                }
            }, {
                test: /\.(scss|css)$/,
                use: ExtractTextPlugin.extract({
                    use: [
                        {
                            loader: 'css-loader',
                            options: {
                                sourceMap: true
                            }
                        }, {
                            loader: 'postcss-loader',
                            options: {
                                sourceMap: true
                            }
                        }, {
                            loader: 'sass-loader',
                            options: {
                                outputStyle: 'expanded',
                                sourceMap: true,
                                sourceMapContents: true
                            }
                        }
                    ],
                    fallback: 'style-loader'
                }),
            }, {
                test: /\.(png|jpg|gif)$/,
                use: [
                    {
                        loader: 'url-loader',
                        options: {
                            name: '[name].[hash:20].[ext]',
                            limit: 8192
                        }
                    }
                ]
            }
        ]
    },
    plugins: [
        new sassLintPlugin({
            context: 'src',
            glob: '**/*.s+(a|c)ss',
            ignorePlugins: ['extract-text-webpack-plugin', 'html-webpack-plugin']
        }),
        new HtmlWebpackPlugin({
            template: './index.html',
            inject: 'body',
        }),
        new CleanWebpackPlugin(buildPath),
        new FaviconsWebpackPlugin({
            logo: './src/assets/icon.png',
            prefix: 'icons-[hash]/',
            persistentCache: true,
            inject: true,
            background: '#fff',
            title: 'Webpack starter basic',
            icons: {
                android: true,
                appleIcon: true,
                appleStartup: true,
                coast: false,
                favicons: true,
                firefox: true,
                opengraph: false,
                twitter: false,
                yandex: false,
                windows: false
            }
        }),
        new webpack.optimize.UglifyJsPlugin({
            sourceMap: true,
            output: {
                comments: false
            }
        }),
        new ExtractTextPlugin('styles.[contentHash].css', {
            allChunks: true
        }),
        new OptimizeCssAssetsPlugin({
            cssProcessor: require('cssnano'),
            cssProcessorOptions: {
                map: {
                    inline: false,
                },
                discardComments: {
                    removeAll: true
                }
            },
            canPrint: true
        })
    ]
};