From 76cb9c2a39d477a64824a985ade40507e3bbade1 Mon Sep 17 00:00:00 2001
From: Adam Mathes <adam@adammathes.com>
Date: Fri, 13 Feb 2026 21:34:48 -0800
Subject: feat(vanilla): add testing infrastructure and tests (NK-wjnczv)

---
 .../tldts-core/src/lookup/fast-path.ts             | 80 ++++++++++++++++++++++
 .../tldts-core/src/lookup/interface.ts             | 10 +++
 2 files changed, 90 insertions(+)
 create mode 100644 vanilla/node_modules/tldts-core/src/lookup/fast-path.ts
 create mode 100644 vanilla/node_modules/tldts-core/src/lookup/interface.ts

(limited to 'vanilla/node_modules/tldts-core/src/lookup')

diff --git a/vanilla/node_modules/tldts-core/src/lookup/fast-path.ts b/vanilla/node_modules/tldts-core/src/lookup/fast-path.ts
new file mode 100644
index 0000000..f80898f
--- /dev/null
+++ b/vanilla/node_modules/tldts-core/src/lookup/fast-path.ts
@@ -0,0 +1,80 @@
+import { IPublicSuffix, ISuffixLookupOptions } from './interface';
+
+export default function (
+  hostname: string,
+  options: ISuffixLookupOptions,
+  out: IPublicSuffix,
+): boolean {
+  // Fast path for very popular suffixes; this allows to by-pass lookup
+  // completely as well as any extra allocation or string manipulation.
+  if (!options.allowPrivateDomains && hostname.length > 3) {
+    const last: number = hostname.length - 1;
+    const c3: number = hostname.charCodeAt(last);
+    const c2: number = hostname.charCodeAt(last - 1);
+    const c1: number = hostname.charCodeAt(last - 2);
+    const c0: number = hostname.charCodeAt(last - 3);
+
+    if (
+      c3 === 109 /* 'm' */ &&
+      c2 === 111 /* 'o' */ &&
+      c1 === 99 /* 'c' */ &&
+      c0 === 46 /* '.' */
+    ) {
+      out.isIcann = true;
+      out.isPrivate = false;
+      out.publicSuffix = 'com';
+      return true;
+    } else if (
+      c3 === 103 /* 'g' */ &&
+      c2 === 114 /* 'r' */ &&
+      c1 === 111 /* 'o' */ &&
+      c0 === 46 /* '.' */
+    ) {
+      out.isIcann = true;
+      out.isPrivate = false;
+      out.publicSuffix = 'org';
+      return true;
+    } else if (
+      c3 === 117 /* 'u' */ &&
+      c2 === 100 /* 'd' */ &&
+      c1 === 101 /* 'e' */ &&
+      c0 === 46 /* '.' */
+    ) {
+      out.isIcann = true;
+      out.isPrivate = false;
+      out.publicSuffix = 'edu';
+      return true;
+    } else if (
+      c3 === 118 /* 'v' */ &&
+      c2 === 111 /* 'o' */ &&
+      c1 === 103 /* 'g' */ &&
+      c0 === 46 /* '.' */
+    ) {
+      out.isIcann = true;
+      out.isPrivate = false;
+      out.publicSuffix = 'gov';
+      return true;
+    } else if (
+      c3 === 116 /* 't' */ &&
+      c2 === 101 /* 'e' */ &&
+      c1 === 110 /* 'n' */ &&
+      c0 === 46 /* '.' */
+    ) {
+      out.isIcann = true;
+      out.isPrivate = false;
+      out.publicSuffix = 'net';
+      return true;
+    } else if (
+      c3 === 101 /* 'e' */ &&
+      c2 === 100 /* 'd' */ &&
+      c1 === 46 /* '.' */
+    ) {
+      out.isIcann = true;
+      out.isPrivate = false;
+      out.publicSuffix = 'de';
+      return true;
+    }
+  }
+
+  return false;
+}
diff --git a/vanilla/node_modules/tldts-core/src/lookup/interface.ts b/vanilla/node_modules/tldts-core/src/lookup/interface.ts
new file mode 100644
index 0000000..495a642
--- /dev/null
+++ b/vanilla/node_modules/tldts-core/src/lookup/interface.ts
@@ -0,0 +1,10 @@
+export interface IPublicSuffix {
+  isIcann: boolean | null;
+  isPrivate: boolean | null;
+  publicSuffix: string | null;
+}
+
+export interface ISuffixLookupOptions {
+  allowIcannDomains: boolean;
+  allowPrivateDomains: boolean;
+}
-- 
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