longestCommonPrefix.js

const longestCommonPrefix = (strings) => {
  if (strings.length === 1) {
      return strings[0];
  }

  const sortedStrings = strings.sort();
  const first = sortedStrings.at(0).split('');
  const last = sortedStrings.at(-1);
  let result = '';

  // here will be a character-by-character check

  return result;
};