function resolveCnameimport { resolveCname } from "https://dotland.deno.dev/std@0.146.0/node/dns/promises.ts"; resolveCname(hostname: string): Promise<void>Parametershostname: stringReturnsPromise<void>import resolveCnameimport { resolveCname } from "https://dotland.deno.dev/std@0.146.0/node/dns/promises.ts";