使用管道从async await https请求生成文件

const https = require('https');
const fs = require('fs');

async function downloadFile(url, filePath) {
  const fileStream = fs.createWriteStream(filePath);

  const response = await new Promise((resolve, reject) => {
    https.get(url, resolve).on('error', reject);
  });

  response.pipe(fileStream);

  return new Promise((resolve, reject) => {
    fileStream.on('finish', resolve);
    fileStream.on('error', reject);
  });
}

// 调用示例
const url = 'https://example.com/file.txt';
const filePath = 'path/to/save/file.txt';

downloadFile(url, filePath)
  .then(() => {
    console.log('文件下载完成');
  })
  .catch((error) => {
    console.error('文件下载失败:', error);
  });