Arguments Optional - last test not passing

JavaScript
1

Tell us what’s happening:

Not sure what to do to pass the last test. The second arg is a number inside an array. It should return undefined like the other tests but instead it get concatenated with the first argument.

Your code so far


function addTogether() {
  // converts args obj into an array
  const args = Array.prototype.slice.call(arguments)
  for (let i = 0; i < args.length; i++) {
    if (typeof args[i] !== 'number') {
      return undefined
    }
    else if (args.length === 1 && typeof args[i] === 'number') {
      return function(c) {
        return args[i] + c
      }
    }
  }
  return args.reduce((p, c) => p + c, 0)
}

console.log(addTogether(2)([3]))

Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/arguments-optional

2

SOLVED!

I jumped to the forum too soon.

Here it is if anyone else is struggling. I would appreciate some feedback since the code seems a little too much. Not sure though.

function addTogether() {
  // converts args obj into an array
  const args = Array.prototype.slice.call(arguments)
  for (let i = 0; i < args.length; i++) {
    if (typeof args[i] !== 'number') {
      return undefined
    }
    else if (args.length === 1 && typeof args[i] === 'number') {
      return function(c) {
        if (typeof c !== 'number') {
          return undefined
        } else {
          return args[i] + c
        }
      }
    }
  }
  return args.reduce((p, c) => p + c, 0)
}