terser-webpack-plugin VS mini-css-extract-plugin

const path = require('path'); const MiniCssExtractPlugin = require("mini-css-extract-plugin"); const CssMinimizerPlugin = require("css-minimizer-webpack-plugin"); const HtmlWebpackPlugin = require('html-webpack-plugin'); const { CleanWebpackPlugin } = require('clean-webpack-plugin'); const TerserPlugin = require("terser-webpack-plugin"); module.exports = { // watch: true, mode: "production", entry: "./src/index.tsx", output: { filename: 'main.js', path: path.resolve(__dirname, 'build') }, optimization: { chunkIds: 'named', minimizer: [ new TerserPlugin({ parallel: true, terserOptions: { // https://github.com/webpack-contrib/terser-webpack-plugin#terseroptions }, }), new CssMinimizerPlugin(), ], }, plugins: [ new MiniCssExtractPlugin(), new HtmlWebpackPlugin({ template: path.resolve(__dirname, './public/index.html'), // template file filename: 'index.html', // output file }), new CleanWebpackPlugin(), ], module: { rules: [ { test: /\.(js|jsx)$/, exclude: /(node_modules|bower_components)/, use: { loader: 'babel-loader', options: { presets: ['@babel/preset-env', "@babel/preset-react"] } } }, { test: /\.css$/i, use: [ MiniCssExtractPlugin.loader, { loader: 'css-loader', options: { importLoaders: 1 } }, { loader: 'postcss-loader', options: { postcssOptions: { plugins: [ [ 'autoprefixer', { overrideBrowserslist: ['last 3 versions', 'ie >9'] }, ], ], }, }, }, ], }, { test: /\.scss$/i, use: [ MiniCssExtractPlugin.loader, { loader: 'css-loader', options: { importLoaders: 1 } }, { loader: "postcss-loader", options: { postcssOptions: { plugins: [ [ "autoprefixer", { overrideBrowserslist: ['last 3 versions', 'ie >9'] }, ], ], }, }, }, 'sass-loader' ], }, { test: /\.(svg|eot|woff|woff2|ttf)$/, use: ['file-loader'] }, { test: /\.tsx?$/, loader: "ts-loader", exclude: /node_modules/, options: { allowTsInNodeModules: true } } ] }, resolve: { extensions: ["*",".ts", ".tsx", ".js", "jsx"] }, }

There are lots of options available with this plugin which you can check here.

Make sure Webpack is in production mode on release! Webpack applies a number of optimizations to your bundle, including minification with TerserWebpackPlugin if you’re using Webpack v4 or above. If not, you’ll have to install and add it manually. Other optimizations include omitting development-only code and using optimized assets.

Specifically quote_mode in terser-webpack-plugin

terser-webpack-plugin - Optimize and minimize JavaScript

mini-css-extract-plugin

In my production file I'm using mini-css-extract-plugin to create a final css file rather than have them loaded in my bundle.js file.

The css webpack extract plugin gets 12 million downloads per week https://www.npmjs.com/package/mini-css-extract-plugin

This shouldn't be the case, at least not if you're doing it "properly". For dev builds, sure, but for production, it's better to use something like mini-css-extract-plugin to extract the bundled CSS into separate files. Then for files in your main entrypoint, the CSS will be loaded via tags, and files loaded via code-splitting, the tags will be added to the DOM dynamically.

Since I'm using Webpack 4, I am also using mini-css-extract-plugin. I started down the path of creating a splitChunks in my webpack config.

When in Webpack entry are defined style files like SCSS/SASS and used the mini-css-extract-plugin then will be generated unexpected empty js files.

According to its Github page this is deprecated and you should use this instead https://github.com/webpack-contrib/mini-css-extract-plugin

npm WARN deprecated [email protected]: Deprecated. Please use https://github.com/webpack-contrib/mini-css-extract-plugin

If you have a webpack configuration for production then you'll need a different configuration for using CSS. At first, install mini-css-extract-plugin