BA

Better Auth•4mo ago

poteboy

How to keep the same userId when linking anonymous and social accounts?

Hello.

I opened this issue earlier: https://github.com/better-auth/better-auth/issues/4180

I’d like to confirm the recommended approach for handling anonymous → social account linking without changing the userId:

If I set disableDeleteAnonymousUser: truedisableDeleteAnonymousUser: true, is it valid to:

1. Let Better Auth create the new

   user

   user

   record when the social provider is linked
2. In onLinkAccountonLinkAccount, reassign the new Account.userIdAccount.userId to the existing anonymous user
3. Then delete the newly created

   user

   user

   record, so that only the anonymous user remains as the main user

Would this be the correct and supported way to ensure the anonymous user ID is preserved, instead of attempting to swap user IDs?

Thanks in advance!

GitHub

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