type MultipleFilesUploadEvents =
  | { type: 'ADD'; files: AnyFileList; bucketId: string }
  | ({
      type: 'UPLOAD'
      files: AnyFileList
      bucketId: string
    } & FileUploadConfig)
  | { type: 'UPLOAD_PROGRESS'; additions: number }
  | { type: 'UPLOAD_DONE' }
  | { type: 'UPLOAD_ERROR' }
  | { type: 'CANCEL' }
  | { type: 'REMOVE' }
  | { type: 'CLEAR' }