What is transports?

Transports is a helper for Node.js web apps that makes it much easier to add "log in with Google," "log in with Facebook," "log in with LinkedIn," and similar third-party sign-in options to your application. Instead of writing repetitive setup code for every single login provider you want to support, you describe them all in one configuration file and this library handles the wiring. Under the hood, it builds on Passport, a widely used authentication toolkit for Node.js. Normally, wiring up Passport means separately configuring each provider's strategy, setting up the right callback routes, handling the user lookup logic, and managing session serialization, all steps that are nearly identical across providers. This project bundles those steps into a few simple calls. You give it a list of providers (like Google and Facebook) with their API keys, a shared handler function for finding or creating users in your database, and it sets up the login routes and plumbing for everything at once. Someone building a web app who wants to offer multiple social login buttons without the usual tedium would use this. For example, if you are launching a new product and want customers to sign in with their existing Google, Facebook, or LinkedIn accounts rather than creating a brand new password, this tool gets that entire system running with far less manual coding. It is aimed at developers who want to save time and keep their authentication code clean and consistent. A notable design choice is that you pass in your own instance of Passport rather than the library creating one for you. This keeps you in full control of your app's authentication state. Providers are also only enabled if their API credentials are present, which makes it easy to turn individual login methods on or off without changing your code.