将对象转换为数组对象，但按键名字符数向下减少

// 原始对象
const obj = {
  key1: 'value1',
  key22: 'value22',
  key333: 'value333',
  key4444: 'value4444',
};

// 将对象转换为数组对象，并按键名字符数向下减少排序
const arr = Object.keys(obj)
  .map(key => ({ key, value: obj[key] }))
  .sort((a, b) => a.key.length - b.key.length);

console.log(arr);

[
  { key: 'key1', value: 'value1' },
  { key: 'key22', value: 'value22' },
  { key: 'key333', value: 'value333' },
  { key: 'key4444', value: 'value4444' }
]