feat: return signin response if no redirection (#977)

Author: despatates

docs/guide/application-side/session-access.md

@@ -213,6 +213,9 @@ await signIn(credentials, { callbackUrl: 'https://nuxt.org', external: true })
 
 // Trigger a signIn without calling getSession directly. You have to manually call it to get session data.
 await signIn(credentials, { callGetSession: false })
+
+// Trigger a signIn and use the data sent by the provider
+const res = await signIn(credentials)
 ```
 
 :::

src/runtime/composables/local/useAuth.ts

@@ -71,6 +71,8 @@ const signIn: SignInFunc<Credentials, any> = async (credentials, signInOptions,
 
     return navigateTo(callbackUrl, { external })
   }
+
+  return response
 }
 
 const signOut: SignOutFunc = async (signOutOptions) => {