[Breaking] Update default browserslist config (#84401)

Use the current result of `baseline widely available` as the default
browsers.
If we used `baseline widely available` literally, then that would change
the targets even within minor versions.

Author: mischnic

docs/03-architecture/supported-browsers.mdx

@@ -5,25 +5,18 @@ description: Browser support and which JavaScript features are supported by Next
 
 Next.js supports **modern browsers** with zero configuration.
 
-- Chrome 64+
-- Edge 79+
-- Firefox 67+
-- Opera 51+
-- Safari 12+
+- Chrome 111+
+- Edge 111+
+- Firefox 111+
+- Safari 16.4+
 
 ## Browserslist
 
 If you would like to target specific browsers or features, Next.js supports [Browserslist](https://browsersl.ist) configuration in your `package.json` file. Next.js uses the following Browserslist configuration by default:
 
 ```json filename="package.json"
 {
-  "browserslist": [
-    "chrome 64",
-    "edge 79",
-    "firefox 67",
-    "opera 51",
-    "safari 12"
-  ]
+  "browserslist": ["chrome 111", "edge 111", "firefox 111", "safari 16.4"]
 }
 ```
 

package.json

@@ -156,7 +156,7 @@
     "alex": "9.1.0",
     "async-sema": "3.0.1",
     "babel-plugin-react-compiler": "0.0.0-experimental-3fde738-20250918",
-    "browserslist": "4.25.1",
+    "browserslist": "4.26.2",
     "buffer": "5.6.0",
     "cheerio": "0.22.0",
     "cookie": "0.4.1",
@@ -291,8 +291,8 @@
   "pnpm": {
     "overrides": {
       "webpack": "5.98.0",
-      "browserslist": "4.25.1",
-      "caniuse-lite": "1.0.30001579",
+      "browserslist": "4.26.2",
+      "caniuse-lite": "1.0.30001746",
       "@types/node": "20.17.6",
       "@babel/core": "7.26.10",
       "@babel/parser": "7.27.0",

packages/next/package.json

@@ -233,7 +233,7 @@
     "babel-plugin-transform-define": "2.0.0",
     "babel-plugin-transform-react-remove-prop-types": "0.4.24",
     "browserify-zlib": "0.2.0",
-    "browserslist": "4.24.4",
+    "browserslist": "4.26.2",
     "buffer": "5.6.0",
     "busboy": "1.6.0",
     "bytes": "3.1.1",

packages/next/src/compiled/browserslist/index.js

@@ -1,10 +1,2 @@
-// Keep in sync with the `.js` file.
-declare const MODERN_BROWSERSLIST_TARGET: [
-  'chrome 64',
-  'edge 79',
-  'firefox 67',
-  'opera 51',
-  'safari 12',
-]
-
+declare const MODERN_BROWSERSLIST_TARGET: Array<string>
 export default MODERN_BROWSERSLIST_TARGET

packages/next/src/shared/lib/modern-browserslist-target.d.ts

@@ -1,17 +1,15 @@
 // Note: This file is JS because it's used by the taskfile-swc.js file, which is JS.
 // Keep file changes in sync with the corresponding `.d.ts` files.
+
 /**
- * These are the browser versions that support all of the following:
- * static import: https://caniuse.com/es6-module
- * dynamic import: https://caniuse.com/es6-module-dynamic-import
- * import.meta: https://caniuse.com/mdn-javascript_operators_import_meta
+ * These are the minimum browser versions that we consider "modern" and thus compile for by default.
+ * This list was generated using `pnpm browserslist "baseline widely available"` on 2025-10-01.
  */
 const MODERN_BROWSERSLIST_TARGET = [
-  'chrome 64',
-  'edge 79',
-  'firefox 67',
-  'opera 51',
-  'safari 12',
+  'chrome 111',
+  'edge 111',
+  'firefox 111',
+  'safari 16.4',
 ]
 
 module.exports = MODERN_BROWSERSLIST_TARGET