Replaced tsconfig.build.json with tsdown configuration for simplified builds.

src/whois/client.ts

@@ -1,7 +1,7 @@
 import { createConnection } from "node:net";
-import { withTimeout } from "../lib/async.js";
-import { DEFAULT_TIMEOUT_MS } from "../lib/constants.js";
-import type { LookupOptions } from "../types.js";
+import { withTimeout } from "../lib/async";
+import { DEFAULT_TIMEOUT_MS } from "../lib/constants";
+import type { LookupOptions } from "../types";
 
 export interface WhoisQueryResult {
   serverQueried: string;

src/whois/discovery.ts

@@ -1,6 +1,6 @@
-import type { LookupOptions } from "../types.js";
-import { whoisQuery } from "./client.js";
-import { WHOIS_TLD_EXCEPTIONS } from "./servers.js";
+import type { LookupOptions } from "../types";
+import { whoisQuery } from "./client";
+import { WHOIS_TLD_EXCEPTIONS } from "./servers";
 
 /**
  * Parse the IANA WHOIS response for a TLD and extract the WHOIS server
@@ -32,9 +32,7 @@ export function parseIanaWhoisServer(text: string): string | undefined {
  *   remarks: Registration information: http://example.tld
  *   url: https://registry.example
  */
-export function parseIanaRegistrationInfoUrl(
-  text: string,
-): string | undefined {
+export function parseIanaRegistrationInfoUrl(text: string): string | undefined {
   const lines = String(text).split(/\r?\n/);
   for (const raw of lines) {
     const line = raw.trim();

src/whois/normalize.test.ts

@@ -1,5 +1,5 @@
 import { expect, test } from "vitest";
-import { normalizeWhois } from "./normalize.js";
+import { normalizeWhois } from "./normalize";
 
 test("WHOIS .de (DENIC-like) nserver lines", () => {
   const text = `

src/whois/normalize.ts

@@ -1,12 +1,12 @@
-import { toISO } from "../lib/dates.js";
-import { isWhoisAvailable } from "../lib/domain.js";
-import { parseKeyValueLines, uniq } from "../lib/text.js";
+import { toISO } from "../lib/dates";
+import { isWhoisAvailable } from "../lib/domain";
+import { parseKeyValueLines, uniq } from "../lib/text";
 import type {
   Contact,
   DomainRecord,
   Nameserver,
   RegistrarInfo,
-} from "../types.js";
+} from "../types";
 
 /**
  * Convert raw WHOIS text into our normalized DomainRecord.