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// Important modules this config uses
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const WebpackPwaManifest = require('webpack-pwa-manifest');
const OfflinePlugin = require('offline-plugin');
const { HashedModuleIdsPlugin } = require('webpack');
const TerserPlugin = require('terser-webpack-plugin');
const CompressionPlugin = require('compression-webpack-plugin');
module.exports = require('./webpack.base.babel')({
mode: 'production',
// In production, we skip all hot-reloading stuff
entry: [
require.resolve('react-app-polyfill/ie11'),
path.join(process.cwd(), 'app/app.js'),
],
// Utilize long-term caching by adding content hashes (not compilation hashes) to compiled assets
output: {
filename: '[name].[chunkhash].js',
chunkFilename: '[name].[chunkhash].chunk.js',
},
optimization: {
minimize: true,
minimizer: [
new TerserPlugin({
terserOptions: {
warnings: false,
compress: {
comparisons: false,
},
parse: {},
mangle: true,
output: {
comments: false,
ascii_only: true,
},
},
parallel: true,
cache: true,
sourceMap: true,
}),
],
nodeEnv: 'production',
sideEffects: true,
concatenateModules: true,
runtimeChunk: 'single',
splitChunks: {
chunks: 'all',
maxInitialRequests: 10,
minSize: 0,
cacheGroups: {
vendor: {
test: /[\\/]node_modules[\\/]/,
name(module) {
const packageName = module.context.match(
/[\\/]node_modules[\\/](.*?)([\\/]|$)/,
)[1];
return `npm.${packageName.replace('@', '')}`;
},
},
},
},
},
plugins: [
// Minify and optimize the index.html
new HtmlWebpackPlugin({
template: 'app/index.html',
minify: {
removeComments: true,
collapseWhitespace: true,
removeRedundantAttributes: true,
useShortDoctype: true,
removeEmptyAttributes: true,
removeStyleLinkTypeAttributes: true,
keepClosingSlash: true,
minifyJS: true,
minifyCSS: true,
minifyURLs: true,
},
inject: true,
}),
// Put it in the end to capture all the HtmlWebpackPlugin's
// assets manipulations and do leak its manipulations to HtmlWebpackPlugin
new OfflinePlugin({
relativePaths: false,
publicPath: '/',
appShell: '/',
// No need to cache .htaccess. See http://mxs.is/googmp,
// this is applied before any match in `caches` section
excludes: ['.htaccess'],
caches: {
main: [':rest:'],
// All chunks marked as `additional`, loaded after main section
// and do not prevent SW to install. Change to `optional` if
// do not want them to be preloaded at all (cached only when first loaded)
additional: ['*.chunk.js'],
},
// Removes warning for about `additional` section usage
safeToUseOptionalCaches: true,
}),
new CompressionPlugin({
algorithm: 'gzip',
test: /\.js$|\.css$|\.html$/,
threshold: 10240,
minRatio: 0.8,
}),
new WebpackPwaManifest({
name: 'React Boilerplate',
short_name: 'React BP',
description: 'My React Boilerplate-based project!',
background_color: '#fafafa',
theme_color: '#b1624d',
inject: true,
ios: true,
icons: [
{
src: path.resolve('app/images/icon-512x512.png'),
sizes: [72, 96, 128, 144, 192, 384, 512],
},
{
src: path.resolve('app/images/icon-512x512.png'),
sizes: [120, 152, 167, 180],
ios: true,
},
],
}),
new HashedModuleIdsPlugin({
hashFunction: 'sha256',
hashDigest: 'hex',
hashDigestLength: 20,
}),
],
performance: {
assetFilter: assetFilename =>
!/(\.map$)|(^(main\.|favicon\.))/.test(assetFilename),
},
});
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