Perf/Refactor: processDomainList now returns string[]

Build/lib/set-add-from-array.bench.ts

@@ -0,0 +1,26 @@
+import { fetchRemoteTextByLine } from './fetch-text-by-line';
+import { processLineFromReadline } from './process-line';
+
+import { bench, group, run } from 'mitata';
+
+(async () => {
+  const data = await processLineFromReadline(await fetchRemoteTextByLine('https://osint.digitalside.it/Threat-Intel/lists/latestdomains.txt'));
+
+  group('setAddFromArray', () => {
+    bench('run', () => {
+      const set = new Set(['1', '2', '1', '3', 'skk.moe']);
+      for (let i = 0, len = data.length; i < len; i++) {
+        set.add(data[i]);
+      }
+    });
+  });
+  group('setAddFromArray', () => {
+    bench('run', () => {
+      const set = new Set(['1', '2', '1', '3', 'skk.moe']);
+      // eslint-disable-next-line @typescript-eslint/unbound-method -- thisArg is passed
+      data.forEach(set.add, set);
+    });
+  });
+
+  run();
+})();