function domainToASCII
Usage in Deno
```typescript import { domainToASCII } from "node:node__url.d.ts"; ```
domainToASCII(domain: string): string
Returns the [Punycode](https://tools.ietf.org/html/rfc5891#section-4.4) ASCII serialization of the `domain`. If `domain` is an
invalid domain, the empty string is returned.
It performs the inverse operation to [domainToUnicode](../.././node__url.d.ts/~/domainToUnicode).
```js
import url from 'node:url';
console.log(url.domainToASCII('español.com'));
// Prints xn--espaol-zwa.com
console.log(url.domainToASCII('中文.com'));
// Prints xn--fiq228c.com
console.log(url.domainToASCII('xn--iñvalid.com'));
// Prints an empty string
```
string