const webpack = require("webpack");
const merge = require("webpack-merge");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const OptimizeCssAssetsPlugin = require("optimize-css-assets-webpack-plugin");
const UglifyJsPlugin = require("uglifyjs-webpack-plugin");
const ForkTsCheckerWebpackPlugin = require("fork-ts-checker-webpack-plugin");

const dirs = require("./dirs");

const common = require("./webpack.common.js");

module.exports = merge.smart(common, {
    mode: "production",
    optimization: {
        minimizer: [
            new UglifyJsPlugin({
                parallel: true,
                sourceMap: true,
                uglifyOptions: {
                    ie8: true,
                    output: {
                        comments: false,
                    },
                },
            }),
        ],
    },

    devtool: "hidden-source-map",

    output: {
        path: dirs.DEST,
        filename: "bundle.js",
    },

    plugins: [
        new ForkTsCheckerWebpackPlugin({
        }),
        new MiniCssExtractPlugin({
            path: dirs.DEST,
            filename: "bundle.css",
        }),
        new webpack.BannerPlugin({
            banner: `time: ${new Date().toLocaleString()}`,
        }),
        new OptimizeCssAssetsPlugin({
            assetNameRegExp: /\.css$/g,
            cssProcessor: require("cssnano"),
            cssProcessorPluginOptions: {
                preset: ["default", {
                    discardComments: {
                        removeAll: true,
                    },
                    normalizeUnicode: false,
                }],
            },
            canPrint: true,
        }),
    ],
});