From 4cc2db5ac4e712dbec3bbfb53454aa312e24ff1e Mon Sep 17 00:00:00 2001
From: Fischi <fischnallerdaniel20@gmail.com>
Date: Wed, 24 Sep 2025 01:39:36 +0200
Subject: [PATCH 1/2] fix issue #433: UserSession type inference was broken

---
 src/runtime/server/utils/session.ts |  5 +++--
 src/runtime/utils/type-utils.ts     | 14 ++++++++++++++
 2 files changed, 17 insertions(+), 2 deletions(-)
 create mode 100644 src/runtime/utils/type-utils.ts

diff --git a/src/runtime/server/utils/session.ts b/src/runtime/server/utils/session.ts
index 1fd65485..0a2d70fc 100644
--- a/src/runtime/server/utils/session.ts
+++ b/src/runtime/server/utils/session.ts
@@ -2,6 +2,7 @@ import type { H3Event, SessionConfig } from 'h3'
 import { useSession, createError, isEvent } from 'h3'
 import { defu } from 'defu'
 import { createHooks } from 'hookable'
+import { OmitWithIndexSignature } from "../../utils/type-utils"
 import { useRuntimeConfig } from '#imports'
 import type { UserSession, UserSessionRequired } from '#auth-utils'
 
@@ -40,7 +41,7 @@ export async function getUserSession(event: UseSessionEvent): Promise<UserSessio
  * @param data User session data, please only store public information since it can be decoded with API calls
  * @see https://github.com/atinux/nuxt-auth-utils
  */
-export async function setUserSession(event: H3Event, data: Omit<UserSession, 'id'>, config?: Partial<SessionConfig>): Promise<UserSession> {
+export async function setUserSession(event: H3Event, data: OmitWithIndexSignature<UserSession, 'id'>, config?: Partial<SessionConfig>): Promise<UserSession> {
   const session = await _useSession(event, config)
 
   await session.update(defu(data, session.data))
@@ -53,7 +54,7 @@ export async function setUserSession(event: H3Event, data: Omit<UserSession, 'id
  * @param event The Request (h3) event
  * @param data User session data, please only store public information since it can be decoded with API calls
  */
-export async function replaceUserSession(event: H3Event, data: Omit<UserSession, 'id'>, config?: Partial<SessionConfig>): Promise<UserSession> {
+export async function replaceUserSession(event: H3Event, data: OmitWithIndexSignature<UserSession, 'id'>, config?: Partial<SessionConfig>): Promise<UserSession> {
   const session = await _useSession(event, config)
 
   await session.clear()
diff --git a/src/runtime/utils/type-utils.ts b/src/runtime/utils/type-utils.ts
new file mode 100644
index 00000000..abbfc6b4
--- /dev/null
+++ b/src/runtime/utils/type-utils.ts
@@ -0,0 +1,14 @@
+type Prettify<T> = {
+  [K in keyof T]: T[K]
+}
+
+type RemoveIndexSignature<T> = {
+  [K in keyof T as string extends K ? never : K]: T[K]
+}
+
+type GetIndexSignature<T> = {
+  [K in keyof T as string extends K ? K : never]: T[K]
+}
+
+//Basic Omit but does not break if a [x:string]:unknown Index Signature is present in the type
+export type OmitWithIndexSignature<T extends Record<string, any>, K extends keyof RemoveIndexSignature<T>> = Prettify<Omit<RemoveIndexSignature<T>, K> & GetIndexSignature<T>>

From 663747a3a852df2460db4ac77e88a0a5d2f67dec Mon Sep 17 00:00:00 2001
From: Fischi <fischnallerdaniel20@gmail.com>
Date: Wed, 24 Sep 2025 21:07:08 +0200
Subject: [PATCH 2/2] fix: lints for utility types

---
 src/runtime/server/utils/session.ts |  2 +-
 src/runtime/types/utils.d.ts        | 14 ++++++++++++++
 src/runtime/utils/type-utils.ts     | 14 --------------
 3 files changed, 15 insertions(+), 15 deletions(-)
 create mode 100644 src/runtime/types/utils.d.ts
 delete mode 100644 src/runtime/utils/type-utils.ts

diff --git a/src/runtime/server/utils/session.ts b/src/runtime/server/utils/session.ts
index 0a2d70fc..2ca62ec5 100644
--- a/src/runtime/server/utils/session.ts
+++ b/src/runtime/server/utils/session.ts
@@ -2,7 +2,7 @@ import type { H3Event, SessionConfig } from 'h3'
 import { useSession, createError, isEvent } from 'h3'
 import { defu } from 'defu'
 import { createHooks } from 'hookable'
-import { OmitWithIndexSignature } from "../../utils/type-utils"
+import type { OmitWithIndexSignature } from '../../types/utils'
 import { useRuntimeConfig } from '#imports'
 import type { UserSession, UserSessionRequired } from '#auth-utils'
 
diff --git a/src/runtime/types/utils.d.ts b/src/runtime/types/utils.d.ts
new file mode 100644
index 00000000..6560b339
--- /dev/null
+++ b/src/runtime/types/utils.d.ts
@@ -0,0 +1,14 @@
+type Prettify<T> = {
+  [K in keyof T]: T[K]
+}
+
+type RemoveIndexSignature<T> = {
+  [K in keyof T as string extends K ? never : K]: T[K]
+}
+
+type GetIndexSignature<T> = {
+  [K in keyof T as string extends K ? K : never]: T[K]
+}
+
+// Basic Omit but does not break if a [x:string]:unknown Index Signature is present in the type
+export type OmitWithIndexSignature<T extends Record<string, unknown>, K extends keyof RemoveIndexSignature<T>> = Prettify<Omit<RemoveIndexSignature<T>, K> & GetIndexSignature<T>>
diff --git a/src/runtime/utils/type-utils.ts b/src/runtime/utils/type-utils.ts
deleted file mode 100644
index abbfc6b4..00000000
--- a/src/runtime/utils/type-utils.ts
+++ /dev/null
@@ -1,14 +0,0 @@
-type Prettify<T> = {
-  [K in keyof T]: T[K]
-}
-
-type RemoveIndexSignature<T> = {
-  [K in keyof T as string extends K ? never : K]: T[K]
-}
-
-type GetIndexSignature<T> = {
-  [K in keyof T as string extends K ? K : never]: T[K]
-}
-
-//Basic Omit but does not break if a [x:string]:unknown Index Signature is present in the type
-export type OmitWithIndexSignature<T extends Record<string, any>, K extends keyof RemoveIndexSignature<T>> = Prettify<Omit<RemoveIndexSignature<T>, K> & GetIndexSignature<T>>