如何删除数组中的空嵌套对象？

function removeEmptyNestedObjects(arr) {
  for (let i = 0; i < arr.length; i++) {
    const currentElement = arr[i];
    if (typeof currentElement === 'object' && currentElement !== null) {
      if (Array.isArray(currentElement)) {
        removeEmptyNestedObjects(currentElement);
        if (currentElement.length === 0) {
          arr.splice(i, 1);
          i--;
        }
      } else {
        const keys = Object.keys(currentElement);
        if (keys.length === 0) {
          arr.splice(i, 1);
          i--;
        } else {
          removeEmptyNestedObjects(currentElement);
          const remainingKeys = Object.keys(currentElement);
          if (remainingKeys.length === 0) {
            arr.splice(i, 1);
            i--;
          }
        }
      }
    }
  }
  return arr;
}

// 示例用法
const array = [
  { name: 'John', age: 25, hobbies: [] },
  { name: 'Jane', age: 30, address: {} },
  { name: 'Bob', age: 35, friends: [{}, { name: 'Alice' }, {}] },
  { name: 'Sam', age: 40, children: null },
  { name: 'Kate', age: 45, pets: [{ type: 'cat' }, null, {}] }
];

const result = removeEmptyNestedObjects(array);
console.log(result);