Passport.js file for social login demo

passport.js

// Import all the 
const passport = require('passport');
const GitHubStrategy = require('passport-github').Strategy;
const LinkedInStrategy = require('passport-linkedin-oauth2').Strategy;
const GoogleStrategy = require('passport-google-oauth20').Strategy;
const TwitterStrategy = require('passport-twitter').Strategy;
const Auth0Strategy = require('passport-auth0').Strategy;


module.exports = (app) => {
  passport.use(new GitHubStrategy({
    clientID: process.env['GITHUB_CLIENT_ID'],
    clientSecret: process.env['GITHUB_SECRET'],
    callbackURL: 'http://localhost:3001/auth/github/callback'
  }, (accessToken, refreshToken, profile, done) => done(null, profile)));
  passport.use(new LinkedInStrategy({
    clientID: process.env['LINKEDIN_CLIENT_ID'],
    clientSecret: process.env['LINKEDIN_SECRET'],
    callbackURL: 'http://localhost:3001/auth/linkedin/callback',
    scope: ['r_emailaddress', 'r_liteprofile', 'w_member_social'],
  }, (accessToken, refreshToken, profile, done) => done(null, profile)));
  passport.use(new GoogleStrategy({
    clientID: process.env['GOOGLE_CLIENT_ID'],
    clientSecret: process.env['GOOGLE_CLIENT_SECRET'],
    callbackURL: 'http://localhost:3001/auth/google/callback',
    scope: ['email', 'profile'],
  }, (accessToken, refreshToken, profile, done) => done(null, profile)))
  passport.use(new TwitterStrategy({
    consumerKey: process.env['TWITTER_CONSUMER_KEY'],
    consumerSecret: process.env['TWITTER_CONSUMER_SECRET'],
    callbackURL: "http://localhost:3001/auth/twitter/callback",
  }, (accessToken, refreshToken, profile, done) => done(null, profile)));
  passport.use(new Auth0Strategy({
    clientID: process.env['AUTH0_CONSUMER_KEY'],
    clientSecret: process.env['AUTH0_CONSUMER_SECRET'],
    domain: process.env['AUTH0_DOMAIN'],
    callbackURL: "http://localhost:3001/auth/auth0/callback",
  }, (accessToken, refreshToken, profile, done) => done(null, profile)));
  passport.serializeUser((user, done) => done(null, user));
  passport.deserializeUser((user, done) => done(null, user));
  app.use(passport.initialize());
  app.use(passport.session());
}