fix(ts): match next-auth/adapter & @auth/core/adapters

packages/next-auth/src/adapters.ts

@@ -60,43 +60,45 @@ export interface VerificationToken {
  * [Create a custom adapter](https://next-auth.js.org/tutorials/creating-a-database-adapter)
  */
 export interface Adapter {
-  createUser: (user: Omit<AdapterUser, "id">) => Awaitable<AdapterUser>
-  getUser: (id: string) => Awaitable<AdapterUser | null>
-  getUserByEmail: (email: string) => Awaitable<AdapterUser | null>
+  createUser?: (user: Omit<AdapterUser, "id">) => Awaitable<AdapterUser>
+  getUser?: (id: string) => Awaitable<AdapterUser | null>
+  getUserByEmail?: (email: string) => Awaitable<AdapterUser | null>
   /** Using the provider id and the id of the user for a specific account, get the user. */
-  getUserByAccount: (
+  getUserByAccount?: (
     providerAccountId: Pick<AdapterAccount, "provider" | "providerAccountId">
   ) => Awaitable<AdapterUser | null>
-  updateUser: (user: Partial<AdapterUser> & Pick<AdapterUser, 'id'>) => Awaitable<AdapterUser>
+  updateUser?: (
+    user: Partial<AdapterUser> & Pick<AdapterUser, "id">
+  ) => Awaitable<AdapterUser>
   /** @todo Implement */
   deleteUser?: (
     userId: string
   ) => Promise<void> | Awaitable<AdapterUser | null | undefined>
-  linkAccount: (
+  linkAccount?: (
     account: AdapterAccount
   ) => Promise<void> | Awaitable<AdapterAccount | null | undefined>
   /** @todo Implement */
   unlinkAccount?: (
     providerAccountId: Pick<AdapterAccount, "provider" | "providerAccountId">
   ) => Promise<void> | Awaitable<AdapterAccount | undefined>
   /** Creates a session for the user and returns it. */
-  createSession: (session: {
+  createSession?: (session: {
     sessionToken: string
     userId: string
     expires: Date
   }) => Awaitable<AdapterSession>
-  getSessionAndUser: (
+  getSessionAndUser?: (
     sessionToken: string
   ) => Awaitable<{ session: AdapterSession; user: AdapterUser } | null>
-  updateSession: (
+  updateSession?: (
     session: Partial<AdapterSession> & Pick<AdapterSession, "sessionToken">
   ) => Awaitable<AdapterSession | null | undefined>
   /**
    * Deletes a session from the database.
    * It is preferred that this method also returns the session
    * that is being deleted for logging purposes.
    */
-  deleteSession: (
+  deleteSession?: (
     sessionToken: string
   ) => Promise<void> | Awaitable<AdapterSession | null | undefined>
   createVerificationToken?: (

packages/next-auth/src/core/errors.ts

@@ -1,4 +1,4 @@
-import type { EventCallbacks, LoggerInstance } from ".."
+import type { EventCallbacks, InternalOptions, LoggerInstance } from ".."
 
 /**
  * Same as the default `Error`, but it is JSON serializable.
@@ -106,7 +106,7 @@ export function eventsErrorHandler(
 export function adapterErrorHandler<TAdapter>(
   adapter: TAdapter | undefined,
   logger: LoggerInstance
-): TAdapter | undefined {
+): InternalOptions["adapter"] | undefined {
   if (!adapter) return
 
   return Object.keys(adapter).reduce<any>((acc, name) => {

packages/next-auth/src/core/types.ts

@@ -580,10 +580,12 @@ export type AuthAction =
   | "error"
   | "_log"
 
+type NonNullableFields<T> = {
+  [P in keyof T]-?: NonNullable<T[P]>
+}
+
 /** @internal */
-export interface InternalOptions<
-  TProviderType = ProviderType,
-> {
+export interface InternalOptions<TProviderType = ProviderType> {
   providers: InternalProvider[]
   /**
    * Parsed from `NEXTAUTH_URL` or `x-forwarded-host` and `x-forwarded-proto` if the host is trusted.
@@ -602,7 +604,7 @@ export interface InternalOptions<
   pages: Partial<PagesOptions>
   jwt: JWTOptions
   events: Partial<EventCallbacks>
-  adapter?: Adapter
+  adapter?: NonNullableFields<Adapter>
   callbacks: CallbacksOptions
   cookies: CookiesOptions
   callbackUrl: string