passport.use(new LocalStrategy({ usernameField: 'email' }, (email, password, done) => {
  User.findOne({ email: email.toLowerCase() }, (err, user: any) => {
    if (err) { return done(err); }
    if (!user) {
      return done(undefined, false, { message: `Email ${email} not found.` });
    }
    if (user.password === password) {
      return done(undefined, user);
    } else {
      return done(undefined, false, { message: 'Invalid email or password.' });
    }
    // user.comparePassword(password, (err: Error, isMatch: boolean) => {
    //   if (err) { return done(err); }
    //   if (isMatch) {
    //     return done(undefined, user);
    //   }
    //   return done(undefined, false, { message: 'Invalid email or password.' });
    // });
  });
}));