Array.filter的异步问题

function asyncFilter(array, callback) {
  return new Promise((resolve, reject) => {
    const filteredArray = [];
    let count = 0;

    array.forEach((element, index) => {
      callback(element, index)
        .then(result => {
          if (result) {
            filteredArray.push(element);
          }
          count++;

          if (count === array.length) {
            resolve(filteredArray);
          }
        })
        .catch(reject);
    });
  });
}

// 使用示例
const numbers = [1, 2, 3, 4, 5];

asyncFilter(numbers, async (number) => {
  // 模拟异步操作
  await new Promise(resolve => setTimeout(resolve, 1000));

  // 判断条件
  return number % 2 === 0;
})
  .then(filteredNumbers => {
    console.log(filteredNumbers); // 输出 [2, 4]
  })
  .catch(error => {
    console.error(error);
  });