actually i guess this section was moved above? removing

Author: Rich-Harris

documentation/docs/30-advanced/40-service-workers.md

@@ -29,8 +29,10 @@ The following example caches the built app and any files in `static` eagerly, an
 /// <reference no-default-lib="true"/>
 /// <reference lib="esnext" />
 /// <reference lib="webworker" />
+
 // Ensures that the `$service-worker` import has proper type definitions
 /// <reference types="@sveltejs/kit" />
+
 // Only necessary if you have an import from `$env/static/public`
 /// <reference types="../.svelte-kit/ambient.d.ts" />
 
@@ -135,22 +137,6 @@ navigator.serviceWorker.register('/service-worker.js', {
 
 > [!NOTE] `build` and `prerendered` are empty arrays during development
 
-## Type safety
-
-Setting up proper types for service workers requires some manual setup. Inside your `service-worker.js`, add the following to the top of your file:
-
-```js
-/// file: src/service-worker.js
-/// <reference types="@sveltejs/kit" />
-/// <reference no-default-lib="true"/>
-/// <reference lib="esnext" />
-/// <reference lib="webworker" />
-
-const sw = /** @type {ServiceWorkerGlobalScope} */ (/** @type {unknown} */ (self));
-```
-
-This disables access to DOM typings like `HTMLElement` which are not available inside a service worker and instantiates the correct globals. The reassignment of `self` to `sw` allows you to type cast it in the process (there are a couple of ways to do this, but this is the easiest that requires no additional files). Use `sw` instead of `self` in the rest of the file. The reference to the SvelteKit types ensures that the `$service-worker` import has proper type definitions. If you import `$env/static/public` you either have to `// @ts-ignore` the import or add `/// <reference types="../.svelte-kit/ambient.d.ts" />` to the reference types.
-
 ## Other solutions
 
 SvelteKit's service worker implementation is designed to be easy to work with and is probably a good solution for most users. However, outside of SvelteKit, many PWA applications leverage the [Workbox](https://web.dev/learn/pwa/workbox) library. If you're used to using Workbox you may prefer [Vite PWA plugin](https://vite-pwa-org.netlify.app/frameworks/sveltekit.html).