functional js curry

curryN.js

function curryN(fn, n) {
    function wrapper(args) {
        return function (oneArg) {
            var argsConcat = args.concat(oneArg)
            if (argsConcat.length == ( n || fn.length)) {
                return fn.apply(this, argsConcat)
            }
            return wrapper(argsConcat)
        }
    }

    return wrapper([])
}

module.exports = curryN