From 976fa360a5cd5f123dd73be7b818df9a74e35ab5 Mon Sep 17 00:00:00 2001
From: Victor Fernandez <victor.devitta.fernandez@gmail.com>
Date: Fri, 13 Sep 2024 19:50:37 -0300
Subject: [PATCH] Fix capitalizing words that start with numbers (#346)

---
 packages/title-case/src/index.spec.ts | 2 ++
 packages/title-case/src/index.ts      | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/packages/title-case/src/index.spec.ts b/packages/title-case/src/index.spec.ts
index df1fe328..152dd35f 100644
--- a/packages/title-case/src/index.spec.ts
+++ b/packages/title-case/src/index.spec.ts
@@ -144,6 +144,8 @@ const TEST_CASES: [string, string, Options?][] = [
     'An example. "I.e. test."',
     { sentenceCase: true },
   ],
+  ["friday the 13th", "Friday the 13th"],
+  ["21st century", "21st Century"],
 ];
 
 describe("swap case", () => {
diff --git a/packages/title-case/src/index.ts b/packages/title-case/src/index.ts
index f260ba82..d9dfdd09 100644
--- a/packages/title-case/src/index.ts
+++ b/packages/title-case/src/index.ts
@@ -1,7 +1,7 @@
 const TOKENS = /(\S+)|(.)/g;
 const IS_SPECIAL_CASE = /[\.#]\p{Alphabetic}/u; // #tag, example.com, etc.
 const IS_MANUAL_CASE = /\p{Ll}(?=[\p{Lu}])/u; // iPhone, iOS, etc.
-const ALPHANUMERIC_PATTERN = /\p{Alphabetic}+/gu;
+const ALPHANUMERIC_PATTERN = /[\p{Alphabetic}\p{Nd}]+/gu;
 const IS_ACRONYM =
   /^(\P{Alphabetic})*(?:\p{Alphabetic}\.){2,}(\P{Alphabetic})*$/u;