How can I implement custom strategies in Passport.js?

How can I implement custom strategies in Passport.js?

To implement custom strategies in Passport.js, you need to create a new strategy by extending the Strategy class.

Can you show me a code example for a custom strategy?

Sure! Here's a basic example:

const CustomStrategy = require('passport-custom').Strategy;

passport.use('custom', new CustomStrategy((req, done) => {
    // Your custom authentication logic here
    const user = {}; // Fetch user from database
    return done(null, user);
}));

What are some common use cases for custom strategies?

Common use cases include integrating with third-party APIs, custom user authentication, and handling specific login flows.