JSPM

import { FilePicker } from '@capawesome/capacitor-file-picker';

const pickFiles = async () => {
  const result = await FilePicker.pickFiles({
    types: ['image/png'],
    multiple: true,
  });
};

const appendFileToFormData = async () => {
  const result = await FilePicker.pickFiles();
  const file = result.files[0];

  const formData = new FormData();
  if (file.blob) {
    const rawFile = new File(file.blob, file.name, {
      type: file.mimeType,
    });
    formData.append('file', rawFile, file.name);
  }
};