facebook-access-token.ts

import axios from 'axios';

async function getAccessTokenFromCode(code) {
  const { data } = await axios({
    url: 'https://graph.facebook.com/v4.0/oauth/access_token',
    method: 'get',
    params: {
      client_id: process.env.APP_ID_GOES_HERE,
      client_secret: process.env.APP_SECRET_GOES_HERE,
      redirect_uri: 'https://www.example.com/authenticate/facebook/',
      code,
    },
  });
  console.log(data); // { access_token, token_type, expires_in }
  return data.access_token;
};