Core functionality for domain lookup using RDAP and WHOIS protocols, along with utility functions and tests.

src/utils.test.ts

@@ -0,0 +1,30 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import { extractTld, isLikelyDomain, toISO } from "./utils.js";
+
+test("toISO parses ISO and common whois formats", () => {
+  const iso = toISO("2023-01-02T03:04:05Z");
+  assert.equal(iso, "2023-01-02T03:04:05Z");
+
+  const noZ = toISO("2023-01-02 03:04:05");
+  assert.match(noZ!, /^2023-01-02T03:04:05Z$/);
+
+  const slash = toISO("2023/01/02 03:04:05");
+  assert.match(slash!, /^2023-01-02T03:04:05Z$/);
+
+  const dmy = toISO("02-Jan-2023");
+  assert.equal(dmy, "2023-01-02T00:00:00Z");
+
+  const mdy = toISO("Jan 02 2023");
+  assert.equal(mdy, "2023-01-02T00:00:00Z");
+});
+
+test("extractTld basic", () => {
+  assert.equal(extractTld("example.com"), "com");
+  assert.equal(extractTld("sub.example.co.uk"), "uk");
+});
+
+test("isLikelyDomain", () => {
+  assert.equal(isLikelyDomain("example.com"), true);
+  assert.equal(isLikelyDomain("not a domain"), false);
+});