Function isEmptyFile

src/form-data-wrapper.js:298–300

* Check if the given file is an empty file, which is the result of submitting * an empty ` `. These cause errors when submitting forms * in Safari 11. * * @param {!File} file * @return {boolean}

(file)

 * @return {boolean}
 */
function isEmptyFile(file) {
  return file.name == '' && file.size == 0;
}