UploadAttachmentArgs

type UploadAttachmentArgs = UploadAttachmentCommonArgs & 
  | {
  file: Blob;
  fileName?: string;
}
  | {
  file: Uint8Array;
  fileName: string;
};

Arguments for attachments.upload. A discriminated union on file enforces, at compile time, that raw Uint8Array bytes are accompanied by a fileName (there is no name to infer), while a Blob/File may omit it.