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webpack.prod.js
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webpack.prod.js
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/* eslint-disable import/no-extraneous-dependencies */
const { merge } = require('webpack-merge');
const TerserPlugin = require('terser-webpack-plugin');
const CssMinimizerPlugin = require('css-minimizer-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const ImageMinimizerPlugin = require('image-minimizer-webpack-plugin');
const common = require('./webpack.common');
module.exports = merge(common, {
mode: 'production',
output: {
filename: 'assets/js/[name].[contenthash].js',
chunkFilename: 'assets/js/components/[name].chunk.bundle.js',
clean: true, // Clean source files
},
devtool: 'source-map', // Created a source map
module: {
rules: [
{
test: /\.(js|jsx)$/,
exclude: /node_modules/,
use: {
loader: 'babel-loader', // Transpile files with Babel and webpack
options: {
sourceMap: true,
},
},
},
{
// Convert SCSS files into CSS file
test: /\.(s[ac]ss)$/i,
use: [
{ loader: MiniCssExtractPlugin.loader }, // Resolve CSS imports
{ loader: 'css-loader' }, // Resolve CSS imports
{ loader: 'postcss-loader' }, // Transforming styles with JS plugins
{ loader: 'sass-loader' }, // Load SCSS and compile to CSS
],
},
{
// Compatibility for images
test: /\.(jpe?g|png|gif|svg)$/i,
type: 'asset',
},
{
// Compatibility for fonts
test: /\.(woff|woff2|eot|ttf)$/,
use: [{ loader: 'file-loader' }],
},
],
},
plugins: [
// This extracts CSS into separate files
new MiniCssExtractPlugin({
filename: 'assets/css/[name].[contenthash].min.css',
chunkFilename: 'assets/css/[id].min.css',
}),
],
optimization: {
moduleIds: 'deterministic',
runtimeChunk: 'single',
// Code splitting
splitChunks: {
cacheGroups: {
vendors: {
test: /[\\/]node_modules[\\/]/,
name: 'vendors',
chunks: 'all',
},
},
},
minimizer: [
// Minify CSS
new CssMinimizerPlugin(),
// Optimize and minimize JavaScript
new TerserPlugin({
test: /\.js(\?.*)?$/i,
}),
// Optimize (compress) all images
new ImageMinimizerPlugin({
minimizer: {
implementation: ImageMinimizerPlugin.imageminMinify,
options: {
// Lossless optimization with custom option
plugins: [
['gifsicle', { interlaced: true }],
['jpegtran', { progressive: true }],
['optipng', { optimizationLevel: 5 }],
// Svgo configuration here https://github.com/svg/svgo#configuration
[
'svgo',
{
plugins: [
{
name: 'preset-default',
params: {
overrides: {
removeViewBox: false,
addAttributesToSVGElement: {
params: {
attributes: [{ xmlns: 'http://www.w3.org/2000/svg' }],
},
},
},
},
},
],
},
],
],
},
},
}),
],
},
});