function lookupService
Usage in Deno
```typescript import { lookupService } from "node:node__dns--promises.d.ts"; ```
lookupService(address: string,port: number,): Promise<{ hostname: string; service: string; }>
Resolves the given `address` and `port` into a host name and service using
the operating system's underlying `getnameinfo` implementation.
If `address` is not a valid IP address, a `TypeError` will be thrown.
The `port` will be coerced to a number. If it is not a legal port, a `TypeError` will be thrown.
On error, the `Promise` is rejected with an [`Error`](https://nodejs.org/docs/latest-v20.x/api/errors.html#class-error) object, where `err.code` is the error code.
```js
import dnsPromises from 'node:dns';
dnsPromises.lookupService('127.0.0.1', 22).then((result) => {
console.log(result.hostname, result.service);
// Prints: localhost ssh
});
```
Promise<{ hostname: string; service: string; }>