segmentize

segmentize-regexp.ts

const segmentize = (str: string, maxLength: number): string[] => {
  const regex = new RegExp(`.{1,${maxLength}}`, 'g');
  return str.match(regex) ?? [];
};

segmentize.ts

const segmentize = (
  str: string,
  maxLength: number,
  segments: string[] = []
): string[] => {
  if (str.length > maxLength) {
    const segment = str.substr(0, maxLength);
    const rest = str.substr(maxLength);
    return segmentize(rest, maxLength, [...segments, segment]);
  }
  return [...segments, str];
};