TypeScript Type Inference Issue with createServerFn and Connect RPC

I'm experiencing a TypeScript type inference issue when using createServerFn().handler() with a Connect RPC function that returns a discriminated union response type. TypeScript recursively infers the entire getCurrentUser response structure, deeply expanding all nested Protobuf message types within the discriminated union. This results in a massive inferred type that: - Is not assignable to UserAccountDetails, causing a type error - Causes Cursor IDE to completely hang/freeze, making the file unusable Code Example: // My Connect RPC response type (discriminated union) type ConnectRpcResponse<TData extends Message> = | { readonly data: TData; readonly error?: undefined; } | { readonly data?: undefined; readonly error: ConnectError; }; // My getCurrentUser function returns this type export async function getCurrentUser( payload: ConnectRpcRequestPayload<GetCurrentUserRequest> ): Promise<ConnectRpcResponse<UserAccountDetails>> { // ... implementation return { data: response.account.value }; // UserAccountDetails } // Trying to use it with createServerFn const beforeLoad = createServerFn({ method: 'GET' }).handler(async function() { const data = await getCurrentUser({}); return data; // ❌ TypeScript error here causes Cursor IDE to completely hang/freeze, });