Sync kit docs (#1044)

sync kit docs

Co-authored-by: Rich-Harris <[email protected]>

Author: github-actions[bot]

apps/svelte.dev/content/docs/kit/98-reference/50-configuration.md

@@ -723,6 +723,29 @@ are three strategies with different trade-offs:
 - `preload-js` - uses `<link rel="preload">`. Prevents waterfalls in Chromium and Safari, but Chromium will parse each module twice (once as a script, once as a module). Causes modules to be requested twice in Firefox. This is a good setting if you want to maximise performance for users on iOS devices at the cost of a very slight degradation for Chromium users.
 - `preload-mjs` - uses `<link rel="preload">` but with the `.mjs` extension which prevents double-parsing in Chromium. Some static webservers will fail to serve .mjs files with a `Content-Type: application/javascript` header, which will cause your application to break. If that doesn't apply to you, this is the option that will deliver the best performance for the largest number of users, until `modulepreload` is more widely supported.
 
+</div>
+</div>
+<div class="ts-block-property">
+
+```ts
+// @noErrors
+bundleStrategy?: 'split' | 'single';
+```
+
+<div class="ts-block-property-details">
+
+<div class="ts-block-property-bullets">
+
+- <span class="tag">default</span> `'split'`
+- <span class="tag since">available since</span> v2.13.0
+
+</div>
+
+If `'split'`, splits the app up into multiple .js/.css files so that they are loaded lazily as the user navigates around the app. This is the default, and is recommended for most scenarios.
+If `'single'`, creates just one .js bundle and one .css file containing code for the entire app.
+
+When using `'split'`, you can also adjust the bundling behaviour by setting [`output.experimentalMinChunkSize`](https://rollupjs.org/configuration-options/#output-experimentalminchunksize) and [`output.manualChunks`](https://rollupjs.org/configuration-options/#output-manualchunks)inside your Vite config's [`build.rollupOptions`](https://vite.dev/config/build-options.html#build-rollupoptions).
+
 </div>
 </div>