Script that breaks a string into lines based on a maximum attribute

maxWordsPerLine.js

function maxWordsPerLine(str, max = 30) {
  const result = [];
  
  let counter = 1;
  let tempArr = [];

  for (const [index, letter] of str.split('').entries()) {
    if (counter === max + 1) {
      counter = 1;
      result.push(tempArr);
      tempArr = [];
    } else {
      tempArr.push(letter);
      counter = counter + 1;
    }
  }

  const toArray = () => result.map((r) => r.join('').trim())

  return {
    toArray() {
      return toArray()
    },
    toString() {
      const arr = toArray()
      return arr.join('\n')
    }
  }
}

// usage
const maxWords = maxWordsPerLine('Lorem ipsum dolor sit amet, consectetur adipisicing elit. Ad adipisci doloremque ea earum explicabo impedit iste, minus quos repudiandae sit? Ad at consectetur dicta et eveniet illum ipsa quisquam repellendus!', 10);

console.warn('maxWords:', maxWords.toArray());
console.warn(maxWords.toString());