assertRemotable = (
  remotable,
  optNameOfRemotable = 'Alleged remotable',
) => {
  const passStyle = passStyleOf(remotable);
  passStyle === 'remotable' ||
    Fail`${q(optNameOfRemotable)} ${remotable} must be a remotable, not ${q(
      passStyle,
    )}`;
}
@param {Passable} remotable
@param {string=} optNameOfRemotable
@returns {asserts remotable is RemotableObject}