Why doesn't this while loop close?

[praxis]

const n = 1234;
const typecast = (n) => Number(n);

function sum_reducer(accumulator, currentValue) {
  return accumulator + currentValue;
}

function stringToArray(string) {
  const arrayFromString = Array.from(String(string), typecast);
  return arrayFromString;
}

function digitalRoot(n) {
  const nArr = stringToArray(n);
  const reducedStr = nArr.reduce(sum_reducer);
  const reducedStrLength = reducedStr.toString().length;

  do {
    const reducedArray = stringToArray(reducedStr);
    const evenMoreReducedArr = reducedArray.reduce(sum_reducer);
    const reducedStrLength = evenMoreReducedArr.toString().length;
    console.log(reducedStrLength);
  } while (reducedStrLength > 1);
  console.log(`Final ${reducedStrLength}`);
  return reducedStrLength;
}

digitalRoot(n);

[kevinSmith]

I don’t understand the questions. By “close” you mean “end”? It won’t end until it is false, until reducedStrLength > 1 is false. That is (apparently) never false.

One thing to notice is that you have shadowing variables, two variables with the same name in two different scopes - “reducedStrLength” is defined twice.

What is it you are trying to do here?

[kevinSmith]

Yeah, just declaring that variable once gets it to “work”, but I’m still not clear what the purpose is. If you keep reducing, won’t the final length always be 1?