Memory overflow can't figure it out

So I am trying to answer this exercise from Eloquent Javascript Chapter 4 (The sum of a range) (check the bottom of the page).

My problem is I am getting "Uncaught out of memory" error when running certain combinations like for the example I pasted here.

I don’t see anything wrong with the code. If I changed the range call to a start/end from 35, 30, -1 to, for example, 30, 35, 2 I would get a result so I am confused.

Appreciate any help.

https://eloquentjavascript.net/04_data.html

let all = [];

function range (start, end, step = 1) {

  if (start < end) {
    for (let i = start; i <= end; i += step) 
      all.push(i);
  }
  else if (start > end) {
    for (let i = start; i >= end; i -= step) 
      all.push(i);
  }
  else 
    throw new Error 
    ("Start is equal to End or something else went wrong! Check your input"); 
  
  return all;
}

range(35, 30, -1);

console.log(all);

>Solution :

Using arguments (35, 30, -1) the 2nd for loop will trigger.
With values substituted that reads:

for (let i = 35; i >= 30; i -= (-1)) 
  all.push(i);

You made the step argument negative, but are also decreasing by that value, which in effect means you are adding 1 to i. In that case the loop end condition is never reached (i goes from 35 towards +infinity, i >= 30 never becomes false), leading to an array overflow.

You probably want to limit step to values of 1 and higher, and let the for loop decide if it does += or -= with that value.