ExpressJS next(error) vs return next(error)

Question

What's difference between next(error) and return next(error)

How to throws Business Exceptions in ExpressJS

Answer 1

The return isn't needed by Express. next(error) is sufficient for it.

function foo(req, res, next) {
    next(new Error());
}

But, the return can be used to also stop the execution of the current function, allowing next(error) to more closely resemble a throw statement.

function foo(req, res, next) {
    return next(new Error());

    console.log("This is unreachable code and won't be logged.");
}