nodejs sessionStore: api?

Question

Where do I find api information about req.sessionStore?

I was checking out a library applying:

Object.defineProperty(this, 'req', { value: req });
 this.req.sessionStore.set(this.id, this, fn || function(){});

But haven't been successful finding the api thusfar.
Alternative documentation about request.sessionStore is welcome.

Answer 1

Short Answer all the store methods can be obtained here: https://github.com/expressjs/session#session-store-implementation

Long Answer It took 3 steps to debug this

First where is the req.sessionstore coming from?

// expose store
req.sessionStore = store;

Second, what is the store, it can be passed via options while creating the session or it will pick from MemoryStore

store = options.store || new MemoryStore

Third, MemoryStore is where we have all the setter methods

MemoryStore.prototype.set

Since connect and express share similar middlewares, for other compatible sessionstores instead of default MemoryStore, you can refer to