Next-auth get token for Github REST API

Question

I want to implement user login and access some user data via the Github REST API (eg. repository, issues).

Then I successfully implemented a login feature, but the Github REST API requires a token to access its endpoints. I checked the session using getServerSession(authOptions) and obtained some information, but not the token (as shown below).

"session": {
  "user": {
    "name": "UserName",
    "email": "xxxxxxxx@gmail.com",
    "image": "https://xxxxxx.xxxxxx/xxxxx"
  }
}

I tried some solutions on StackOverflow but none of them worked for me.
Is there somebody who can help me? Thansk.

Answer 1

I found a solution in next.js Discrod server by someone's help.
docs: https://next-auth.js.org/configuration/callbacks#sign-in-callback

export const authOptions : NextAuthOptions = {
  adapter: ...,
  session: {
    strategy: "jwt", // add this
  },
  providers: [...],
  // add two callback functions following
  callbacks: {
    async session({ session, token, user }) {
      session.accessToken = token.accessToken as string;
      return session;
    },
    async jwt({ token, user, account, profile }) {
      if (account) {
        token.accessToken = account.access_token;
      }
      return token;
    }
  },
};

Then for typescript, you need to write this in "types/next-auth.d".
docs: https://next-auth.js.org/getting-started/typescript

import NextAuth, { DefaultSession } from "next-auth";

declare module "next-auth" {
  interface Session {
    accessToken: string;
    expires: string;
    user: {
      address: string
    } & DefaultSession["user"];
  }
}