Using process.exit in Google Cloud Functions

I'd like to know if using process.exit() is a valid way (or good idea) to stop the execution of a Cloud Function. It allows one to write slightly cleaner code, in that you don't have to explicitly return from the exported function.

exports.myFunction = function myFunction(req, res) {
    const abort = function(err) {
        console.error(err);
        res.status(500).send();
        process.exit(1);
    };

    doSomething(err => {
        if (err) abort(err);

        res.status(200).send("Success!");
    });
};

via Wayne Ashley Berry