value79

const deepEqual = (a, b) => {
  if (a === null || b === null || typeof a !== 'object' || typeof b !== 'object') {
    return a === b;
  }
  const aKeys = Object.keys(a);
  const bKeys = Object.keys(b);
  if (aKeys.length !== bKeys.length) {
    return false;
  }
  return aKeys.every(
    (key) => bKeys.includes(key) && deepEqual(a[key], b[key]),
  );
}