Like we can modify output extension of JavaScript files is there also a way to do the same for type definition files?

I tried returning this because dts was showing up in the autocomplete return options but it doesn't work.

format: ['cjs', 'esm'],
outExtension({ format }) {
  switch (format) {
    case 'cjs': {
      return { js: '.cjs', dts: '.d.cts' };
    }
    case 'esm': {
      return { js: '.mjs', dts: '.d.mts' };
    }
    default: {
      return { js: '.js', dts: '.d.ts' };
    }
  }
}

Output type definition files generated after building have extensions .d.ts and .d.cts which is the default since my package is of type module. Is there a way to do this?