docs(guides): breaking change exposeHeadRoutes (#4047)

fastify · Jun 19, 2022 · ce030d0 · ce030d0
1 parent b62b61c
commit ce030d0
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/docs/Guides/Migration-Guide-V4.md b/docs/Guides/Migration-Guide-V4.md
@@ -27,6 +27,12 @@ In some situations, like when a response is sent asynchronously or when you're
 just not explicitly returning a response, you'll need to return the `reply`
 argument from your router handler.
 
+### `exposeHeadRoutes` true by default
+
+Starting from v4, all the `GET` routes will create a sibling `HEAD` route.
+You can revert this behaviour by setting the server's option `exposeHeadRoutes`
+to `false`.
+
 ## Non Breaking Changes
 
 ### Change of schema for multiple types