1. function getBase64(file) {
    2.   return new Promise((resolve, reject) => {
    3.     const reader = new FileReader();
    4.     reader.readAsDataURL(file);
    5.     reader.onload = () => resolve(reader.result);
    6.     reader.onerror = error => reject(error);
    7.   });
    8. }
    10. async uploadFile (file) => {
    11.     base64 = await getBase64(file)
    12. }