How should I use this property?

[haohaofan]

see about

[wojtekmaj]

You can use it in an object passed as file prop.

Please note: You should memoize objects passed to file prop or ensure they aren't changed with every render.

const file = {
  data: // <Binary data here >
};

function Test() {
  return (
    <Document file={file}>
      {/* … */}
    </Document>
  );
}

function Test() {
  const file = useMemo(() => ({
    data: // <Binary data here >
  }), []);

  return (
    <Document file={file}>
      {/* … */}
    </Document>
  );
}

[haohaofan]

Thanks, let me try it