- `hooks.server.js` contains your server [hooks](hooks)
- `service-worker.js` contains your [service worker](service-workers)
- `instrumentation.server.js` contains your [observability](observability) setup and instrumentation code
- - Requires adapter support. If your adapter supports it, it is guarnteed to run prior to loading and running your application code.
+ - Requires adapter support. If your adapter supports it, it is guaranteed to run prior to loading and running your application code.
(Whether the project contains `.js` or `.ts` files depends on whether you opt to use TypeScript when you create your project.)