upload-file.js

async function uploadFile(file, url, handleProgress) {
  return new Promise((resolve, reject) => {
    const req = new XMLHttpRequest();
    req.upload.addEventListener('progress', handleProgress);
    req.addEventListener('load', () => resolve(true));
    req.addEventListener('error', () => {
      const error = new Error('Upload failed');
      reject(error);
    });

    req.open('PUT', url);
    req.send(file);
  });
}

const uploaded = await uploadFile(
  myFile,
  'https://api.example.com/files',
  (event) => {
    console.log(event); 
  }
);