webpack.config.production.js
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webpack.config.production.js
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	/**
	* Copyright (C) 2018-2019 The Software Heritage developers
	* See the AUTHORS file at the top-level directory of this distribution
	* License: GNU Affero General Public License version 3, or any later version
	* See top-level LICENSE file for more information
	*/

	// webpack configuration for compiling static assets in production mode

	// import required webpack plugins
	const TerserPlugin = require('terser-webpack-plugin');
	const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');

	// import webpack development configuration
	var webpackProdConfig = require('./webpack.config.development');

	// override mode to production
	webpackProdConfig.mode = 'production';

	// configure minimizer for js and css assets
	webpackProdConfig.optimization.minimizer = [
	// use terser for minimizing js and generate source map files
	new TerserPlugin({
	cache: true,
	parallel: true,
	sourceMap: true
	}),
	// use cssnano for minimizing css and generate source map files
	new OptimizeCSSAssetsPlugin({
	cssProcessorOptions: {
	map: {
	inline: false,
	annotation: true
	},
	minifyFontValues: false,
	discardUnused: false,
	zindex: false
	}
	})
	];

	// prevent modules concatenation for generating weblabels
	webpackProdConfig.optimization.concatenateModules = false;

	// webpack production configuration
	module.exports = webpackProdConfig;