Sample Line Login v2.1 with NextAuth.js

[...nextauth].ts

// Learn more https://next-auth.js.org/configuration/providers

import type { NextApiRequest, NextApiResponse } from 'next'
import NextAuth from 'next-auth'
import Providers from 'next-auth/providers'

const options = {
  providers: [
    Providers.Facebook({
      clientId: process.env.FACEBOOK_ID,
      clientSecret: process.env.FACEBOOK_SECRET,
    }),
    Providers.Google({
      clientId: process.env.GOOGLE_ID,
      clientSecret: process.env.GOOGLE_SECRET,
    }),
    Providers.Email({
      server: process.env.EMAIL_SERVER,
      from: process.env.SMTP_FROM,
    }),
    {
      id: 'line',
      name: 'Line',
      type: 'oauth',
      version: '2.0',
      scope: 'profile openid email',
      params: {
        grant_type: 'authorization_code'
      },
      accessTokenUrl: 'https://api.line.me/oauth2/v2.1/token',
      authorizationUrl: 'https://access.line.me/oauth2/v2.1/authorize?response_type=code',
      profileUrl: 'https://api.line.me/v2/profile',
      openId: true,
      profile: (profile) => {
        return {
          id: profile.sub,
          name: profile.name,
          email: profile?.email,
          image: profile.picture
        }
      },
      clientId: process.env.LINE_ID,
      clientSecret: process.env.LINE_SECRET,
    },
  ],
  database: process.env.DATABASE_URL,
  secret: process.env.SECRET,
  },
}

export default (req: NextApiRequest, res: NextApiResponse) => NextAuth(req, res, options)