export interface FileBlob {
  type: string,
  data: Uint8Array
};

export function isFileBlob(data: any): data is FileBlob {
  return (
    typeof data === 'object' &&
    data !== null &&
    'type' in data &&
    typeof data.type === 'string' &&
    'data' in data &&
    data.data instanceof Uint8Array
  );
}