[Prettier Plugin] Help - Any ways to format custom class object?

[ChiuMungZitAlexander]

<Modal
  classNames={{
    overlay: '',
    wrapper: '',
    inner: '',
    closeButton: '',
  }}
/>

// prettier.config.js
{
  tailwindAttributes: ["classNames"]
  tailwindFunctions: ['cn', 'clxs', 'cva'],
}

It seems neither tailwindFunctions nor tailwindAttributes will work for custom class object.