Domain Check
You check domain availability using RDAP (the modern, structured replacement for whois),
falling back to whois for TLDs that RDAP doesn't cover. Zero dependencies — Node's built-in
fetch plus the system whois binary when present.
How availability is determined (read this first)
The CLI queries https://rdap.org/domain/<domain>, which redirects to the authoritative registry
RDAP server:
- Redirected + HTTP 200 → registered (taken) — the response includes
[Description truncada. Veja o README completo no GitHub.]