new File.js

function getFileObject (fileObject, callback) {
  var blob = null;
  var xhr = new XMLHttpRequest();
  xhr.open("GET", fileObject.path);
  xhr.responseType = "blob";

  // Process onload event: create new File object and call callback function.
  xhr.onload = () => {
    blob = xhr.response;
    blob.name = fileObject.name;
    blob.lastModifiedDate = new Date();
    let file = new File([blob], fileObject.name);
    callback(file);
  };
  xhr.send()
}