Passing Additional Data During Sign-In with Auth.js

[sir-argupta]

Hi Team,
I was having hard time, during passing additional data during sigin In process. Let say I have getLocalStorageData() function which I want to pass along side sigin button and then want to get that data in auth sigin callback. Can someone please help me with this..!?

siginButton.tsx

function getLocalStorageData(){
  const localStorageData = {
    "recentGroups" : getRecentGroupsLocalStorage(),
    "starredGroups" : getStarredGroupsLocalStorage(),
    "archivedGroups" : getArchivedGroupsLocalStorage()
  }
  return localStorageData
}

export function SignInButton({ children, loadingContent, disabled, loginType, ...props }: SignInProps) {
  const searchParams = useSearchParams();
  const callbackUrl = searchParams.get("callbackUrl") || "/groups";
  
  const handleClick = () => {
    if (!disabled) {
      signIn(loginType, { callbackUrl }); // want to pass data here getLocalStorageData
    }
  };

  return (
    <Button
      disabled={disabled}
      type="submit"
      onClick={handleClick}
      {...props}
    >
      {disabled ? (
        <>
          <Loader2 className="w-4 h-4 mr-2 animate-spin" /> {loadingContent}
        </>
      ) : (
          children
      )}
    </Button>
  );
}

auth.ts

export const { handlers: { GET, POST }, signIn, signOut, auth } = NextAuth ({
  providers: [
    GoogleProvider({
      clientId: env.GOOGLE_CLIENT_ID as string,
      clientSecret: env.GOOGLE_CLIENT_SECRET as string,
    }),
  ],
  session: { strategy: "jwt" },
  callbacks: {
    async signIn({ account, profile }) {
      if (account?.provider === 'google') {
        try {
          const existingUser = await prisma.user.findUnique({
            where: { email: profile?.email as string },
          })
          if (!existingUser) {
            // If user doesn't exist, create a new user
            // Want to use here data from getLocalStorageData
            const newUser = await prisma.user.create({
                data: {
                  email,
                  name,
                },
              })
          }
          return true
        } catch (error) {
          console.error('Error during sign-in:', error);
        }
      }
      return true;
    },
  },
  secret: process.env.AUTH_SECRET as string
})

[sir-argupta]

I also looked into this discussion #4094 but it was for next-auth version 4, not for the latest one.