updateUser does not update Info on the server side

[richardpolzer]

Hi :)

currently the destructured updateUser does not send a request to the server to update the data. It updates the local store but not the server side one. Using the client directly works as intended.

Reproduction: https://github.com/richardpolzer/nuxt-better-auth_updateUser

Bildschirmaufnahme.2026-02-12.um.20.17.23.mov

[onmax]

Thanks!

[onmax]

For now updateUser() only updates local state (optimistic UI), it does not refetch or persist anything from the server.

If you update user data on the server, call fetchSession() after the update so the client state matches the real session/user data:

const { client, fetchSession } = useUserSession()

await client.api.updateUser(/* payload */) // or your own server route
await fetchSession({ force: true })      // refreshes from server session

updateUser is fine for immediate UI tweaks, but fetchSession is what you need to sync after server-side changes.

I am thinking though about mergin #112 or not...

[richardpolzer]

I think when named like this it suggests it would update the user also on the server since the same better-auth method exists. Maybe renaming it to updateUserLocal or updateUserClientOnly would make it clearer what it is.
Or of course providing the functionality that matches better-auth.

In the MR:
I think there is no need for an any cast here await (client as any).updateUser(updates)

For client.api.updateUser(/* payload */) in my case there is no need to fetch the session since the signal gets triggered.