@types/passport

Authentication Middleware Initialization

This code initializes Passport as middleware in an Express application, enabling authentication functionalities.

import * as passport from 'passport';
app.use(passport.initialize());

Serialize User

This function defines how to store the user in the session storage, typically saving the user ID.

passport.serializeUser((user, done) => {
  done(null, user.id);
});

Deserialize User

This function defines how to retrieve the user from the session storage, using the user ID to fetch the user record from the database.

passport.deserializeUser((id, done) => {
  User.findById(id, (err, user) => {
    done(err, user);
  });
});

Use of Strategy

This code sample demonstrates how to implement a local authentication strategy using Passport.js. It involves checking the username and password against stored records.

import { Strategy as LocalStrategy } from 'passport-local';
passport.use(new LocalStrategy(
  function(username, password, done) {
    User.findOne({ username: username }, function (err, user) {
      if (err) { return done(err); }
      if (!user) { return done(null, false); }
      if (!user.verifyPassword(password)) { return done(null, false); }
      return done(null, user);
    });
  }
));