Function currying similar to lodash's

curry.js

var argCurry = function(args, n, fn) {
	if(args.length === n) {
		return fn.apply(null, args)
	} else {
		return function() {
			var newArgs = args.concat(Array.prototype.slice.call(arguments))
			return argCurry(newArgs, n, fn)
		}
	}
}

var curryN = function(n, fn) {
	return function() {
		var args = Array.prototype.slice.call(arguments)
		return argCurry(args, n, fn)
	}
}

var curry = function(fn) {
	var n = arguments.length === 1 ? fn.length : arguments[1]
	return curryN(n, fn)
}

var fn1 = curry(function(a) {
	console.log(a)
})

fn1()()(1)

var fn2 = curry(function(a, b) {
	return [a, b]
})

console.log(fn2(1)()(2))