auth.d.ts

gistfile1.txt

import { DefaultSession } from "@auth/core/types";

declare module "@auth/core" {
	interface Session {
		user: {
			email: string;
			subscribed: boolean;
			// By default, TypeScript merges new interface properties and overwrite existing ones. In this case, the default session user properties will be overwritten, with the new one defined above. To keep the default session user properties, you need to add them back into the newly declared interface
		} & DefaultSession["user"]; // To keep the default types
	}
}

declare module "@auth/core/adapters" {
	interface AdapterUser {
		stripeCustomerId: string;
		credits: number;
	}
}

declare module "next-auth" {
	/**
	 * Leveraged by session callback's user object (AdapterUser extends User)
	 */
	export interface User extends DefaultUser {
		stripeCustomerId: string;
		credits: number;
	}
}