---
'astro': major
---

Updates how the `build.client` and `build.server` option values get resolved to match existing documentation. With this fix, the option values will now correctly resolve relative to the `outDir` option. So if `outDir` is set to `./dist/nested/`, then by default:

- `build.client` will resolve to `<root>/dist/nested/client/`
- `build.server` will resolve to `<root>/dist/nested/server/`

Previously the values were incorrectly resolved:

- `build.client` was resolved to `<root>/dist/nested/dist/client/`
- `build.server` was resolved to `<root>/dist/nested/dist/server/`

If you were relying on the previous build paths, make sure that your project code is updated to the new build paths.