A simple approach to curry any function.

curry.js

function curry(func){
    return function temp(...args) {
        if (args.length < func.length) {
             return temp.bind(null, ...args)
        }
        return func(...args)
    }
}

var getSum = function (a, b, c, d, e) { return a + b + c + d + e; }
console.log(curry(getSum)(15)(20)(25)(30)(35)) // 125
console.log(curry(getSum)(15, 20)(25, 30)(35)) // 125