Creating declaration files results in too long type

Hi,

I'm currently using Hono RPC and want to export my Router as a type for the frontend.
The problem I'm facing is that when I'm compiling the declaration files to relieve tsserver of inferring them, it crashes with this error message.

src/lib/auth.ts:18:14 - error TS7056: The inferred type of this node exceeds the maximum length the compiler will serialize. An explicit type annotation is needed.

18 export const auth = betterAuth({
                ~~~~

[11:24:50 PM] Found 1 error. Watching for file changes.

src/lib/auth.ts:18:14 - error TS7056: The inferred type of this node exceeds the maximum length the compiler will serialize. An explicit type annotation is needed.

18 export const auth = betterAuth({
                ~~~~

[11:24:50 PM] Found 1 error. Watching for file changes.

I'm currently using the admin, organization, magicLink, passKey and twoFactor Plugins and a prisma adapter with postgres

Is this known, can I fix this somehow?
Thanks in advance!

bekacru•2/12/25, 5:11 AM

my recommendation currently, disable from tsconfig and use tsup or other bunder to generate the decalration file instead.

lambertOP•2/12/25, 11:05 AM

tsup had the same problem, I "fixed" it with removing the passkey Plugin

I don’t think it’s really the culprit, just that it’s type probably pushed it over the limit

Llambert tsup had the same problem, I "fixed" it with removing the passkey Plugin I don’...

bekacru•2/12/25, 11:08 AM

It should probably be addressed on 1.2. You can try rc on

Bbekacru It should probably be addressed on 1.2. You can try rc on `better-auth@beta`

Arthur•7/15/25, 9:10 PM

still have the issue with 1.2, any help on this ?