webpack.config.prod.js

const merge = require("webpack-merge");
const webpack = require("webpack");
const pkg = require('./package.json');

const args = process.argv.slice(2);

const baseConfig = require("./node_modules/@mendix/pluggable-widgets-tools/configs/webpack.config.prod.js");//Can also be webpack.config.prod.js

const TerserPlugin = require("terser-webpack-plugin");
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;

const optimization = {
    minimizer: [
        new TerserPlugin({
            cache: true,
            parallel: true,
            terserOptions: {
                ecma: undefined,
                warnings: false,
                parse: {},
                compress: {
                    passes: 2
                },
                mangle: true, // Note `mangle.properties` is `false` by default.
                module: false,
                output: {
                    comments: false,
                    beautify: false,
                    preamble: `/* TimePicker Widget || Version ${pkg.version} || Apache 2 LICENSE || Developer: ${pkg.author} || Please report any issues here: https://github.com/JelteMX/mendix-tree-table/issues */\n`
                    // comments: false
                },
                toplevel: false,
                nameCache: null,
                ie8: false,
                keep_classnames: undefined,
                keep_fnames: false,
                safari10: false,
            },
        }),
      ]
};

const customConfig = {
    // Custom configuration goes here
    devtool: false,
    optimization,
    plugins: [
        new webpack.ContextReplacementPlugin(/moment[\/\\]locale$/, /en-gb/)
    ]
};

if (args.length === 5 && args[4] === "--analyze") {
    customConfig.plugins.push(new BundleAnalyzerPlugin());
}

const previewConfig = {

    optimization,
    plugins: [
        new webpack.ContextReplacementPlugin(/moment[\/\\]locale$/, /en-gb/)
    ]
};

module.exports = [merge(baseConfig[0], customConfig), merge(baseConfig[1], previewConfig)];