Curry function

curry-function.js

/***
 * function sum(a,b,c) { return a +b + c;}
 * const cSum = curry(sum)
 * cSum(1, 2, 3) => 6
 * cSum(1)(2)(3) => 6
 * cSum(1)(2,3) => 6
 */

function curry(func) {
  return (...args) => {
    if(args.length >=func.length) {
      return func.apply(null, args)
    }
    function recallFunc(...argsInner)  {
      if(argsInner.length >= func.length) {
        return func.apply(null,argsInner);
      }
      return recallFunc.bind(null, ...argsInner);
    }
    return recallFunc.bind(null, ...args);
  }
}