File Upload using Angular

file-upload.ts

fileUpload(event) {
  let fileList: FileList = event.target.files;

  if (fileList.length > 0) {
    let file: File = fileList[0];

    const xhr: XMLHttpRequest = new XMLHttpRequest();

    xhr.onreadystatechange = () => {
      if (xhr.readyState === 4) {
        if (xhr.status === 200) {
          const response = JSON.parse(xhr.response);

          console.log('success');
        } else {
          console.log('error: ' + xhr.response);
        }
      }
    };

    xhr.open('POST', ApiUrl, true);

    xhr.setRequestHeader('Accept', 'application/json');
    xhr.setRequestHeader('Authorization', `Bearer ${localStorage.token}`);
    xhr.setRequestHeader('Access-Control-Allow-Origin', '*');

    const formData = new FormData();

    formData.append('photo', file, file.name);

    xhr.send(formData);
  }
}