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src/content/configuration/optimization.md

@@ -3,17 +3,22 @@ title: Optimization
 sort: 8
 contributors:
   - EugeneHlushko
+  - jeremenichelli
+related:
+  - title: 'webpack 4: Code Splitting, chunk graph and the splitChunks optimization'
+    url: https://medium.com/webpack/webpack-4-code-splitting-chunk-graph-and-the-splitchunks-optimization-be739a861366
 ---
 
-Optimization configuration allows you to control the webpack output optimization level.
+Since version 4 webpack runs optimizations for you depending on the chosen `mode`, still all optimizations are available for manual configuration and overrides.
 
 
 ## `optimization.minimize`
 
 `boolean`
 
-Tell webpack to minimize the JavaScript output using the [UglifyjsWebpackPlugin](/plugins/uglifyjs-webpack-plugin/)
-It is set to `true` by default in `production` [mode](/concepts/mode/).
+Tell webpack to minimize the bundle using the [UglifyjsWebpackPlugin](/plugins/uglifyjs-webpack-plugin/).
+
+This is `true` by default in `production` mode.
 
 __webpack.config.js__
 
@@ -22,16 +27,18 @@ __webpack.config.js__
 module.exports = {
   //...
   optimization: {
-    minimize: true
+    minimize: false
   }
 }
 ```
 
+T> Learn how [mode](/concepts/mode/) works.
+
 ## `optimization.minimizer`
 
 `UglifyjsWebpackPlugin | [UglifyjsWebpackPlugin]`
 
-Allows to override default minimizer by providing one or more custom configured [UglifyjsWebpackPlugin](/plugins/uglifyjs-webpack-plugin/) instance(s).
+Allows you to override the default minimizer by providing a different one or more customized [UglifyjsWebpackPlugin](/plugins/uglifyjs-webpack-plugin/) instances.
 
 __webpack.config.js__
 
@@ -41,7 +48,7 @@ module.exports = {
   //...
   optimization: {
     minimizer: [
-      new UglifyJsPlugin({ /* … */ })
+      new webpack.optimize.UglifyJsPlugin({ /* your config */ })
     ]
   }
 }
@@ -51,4 +58,4 @@ module.exports = {
 
 `object`
 
-Tells webpack how to deal with code splitting. See configuration and available options on the [SplitChunksPlugin](/plugins/split-chunks-plugin/) page.
+By default webpack v4+ provides new common chunks strategies out of the box for dynamically imported modules. See available options for configuring this behavior in the [SplitChunksPlugin](/plugins/split-chunks-plugin/) page.