Gio.OutputStream.prototype.write_bytes

function write_bytes(bytes: ByteArray, cancellable: Gio.Cancellable): Number(gssize) {
    // Gjs wrapper for g_output_stream_write_bytes()
}
  

A wrapper function for Gio.OutputStream.prototype.write which takes a GLib.Bytes as input. This can be more convenient for use by language bindings or in other cases where the refcounted nature of GLib.Bytes is helpful over a bare pointer interface.

However, note that this function may still perform partial writes, just like Gio.OutputStream.prototype.write. If that occurs, to continue writing, you will need to create a new GLib.Bytes containing just the remaining bytes, using GLib.Bytes.prototype.new_from_bytes. Passing the same GLib.Bytes instance multiple times potentially can result in duplicated data in the output stream.