feat: Sessionを拡張してgithubのアクセストークンを取得

app/page.tsx

@@ -10,6 +10,8 @@ export default async function Home() {
 	const session = await auth();
 	if (!session?.user) return null;
 
+	console.log(session);
+
 	return (
 		<div className="flex min-h-dvh items-center justify-center bg-gradient-to-b from-pink-300 to-blue-300 p-4">
 			<div className="w-full max-w-md space-y-8 text-center">

lib/auth.ts

@@ -3,9 +3,20 @@ import GitHub from "next-auth/providers/github";
 import "next-auth/jwt";
 
 export const { handlers, auth, signIn, signOut } = NextAuth({
-	providers: [GitHub],
+	providers: [
+		GitHub({
+			authorization: {
+				param: {
+					scope: "repo read:user",
+				},
+			},
+		}),
+	],
 	callbacks: {
-		async jwt({ token, profile }) {
+		async jwt({ token, profile, account }) {
+			if (account) {
+				token.accessToken = account.access_token;
+			}
 			if (profile) {
 				const { login } = profile;
 				token.user = { ...token.user, login };
@@ -15,6 +26,7 @@ export const { handlers, auth, signIn, signOut } = NextAuth({
 		async session({ session, token }) {
 			const { login } = token.user;
 			session.user = { ...session.user, login };
+			session.accessToken = token.accessToken;
 			return session;
 		},
 	},
@@ -24,18 +36,23 @@ declare module "next-auth" {
 		user: {
 			login: string;
 		} & DefaultSession["user"];
+		accessToken: string;
 	}
 	interface User {
 		login: string;
 	}
 	interface Profile {
 		login: string;
 	}
+	interface Account {
+		access_token: string;
+	}
 }
 declare module "next-auth/jwt" {
 	interface JWT {
 		user: {
 			login: string;
 		};
+		accessToken: string;
 	}
 }