How to create a synchronous function from an asynchronous one for backwards compatability

Vote count:

0

Disclaimer: I know that synchro stuff is to be avoided, and that promises and callbacks are preferrable, but I'm stuck writing a system that needs a small amount of backwards compatability, and need to write this for a temporary stop gap.

Writing an express.js app, I have a function that takes the request object from a .get or .post etc function, and confirms whether the session key is valid (after checking this with a remote API server). The main version of the function is like this:

module.exports.isValidSession(req, cb) {
    // REST API Calls and callbacks, error handling etc, all works fine.
}

I need a version of the above to be compatible with an older system (that will soon be phased out). I'm quite new to Node, although not to JS, so I'm wondering if there's a good convention on how to do this?

asked 1 min ago

Owen

387

How to create a synchronous function from an asynchronous one for backwards compatability