From 081c96503091e21f16f074b7f3a6cfb3bf8bc169 Mon Sep 17 00:00:00 2001
From: DualFroz <me@dualfroz.com>
Date: Fri, 2 Oct 2026 15:56:00 +0200
Subject: [PATCH] fix(whereIts): return titlecased timezone names

---
 src/timezone/index.js                 | 19 +------------------
 src/timezone/titleCase.js             | 18 ++++++++++++++++++
 src/whereIts.js                       |  3 ++-
 tests/timezones/timezone-name.test.js |  9 +++++++++
 4 files changed, 30 insertions(+), 19 deletions(-)
 create mode 100644 src/timezone/titleCase.js

diff --git a/src/timezone/index.js b/src/timezone/index.js
index 206a91a..942f5ea 100644
--- a/src/timezone/index.js
+++ b/src/timezone/index.js
@@ -2,6 +2,7 @@
 import findTz from './find.js'
 import inSummerTime from './summerTime.js'
 import getDstShift from './dstShift.js'
+import titleCase from './titleCase.js'
 
 const parseDst = dst => {
   if (!dst) {
@@ -10,24 +11,6 @@ const parseDst = dst => {
   return dst.split('->')
 }
 
-//iana codes are case-sensitive, technically
-const titleCase = str => {
-  str = str[0].toUpperCase() + str.substr(1)
-  str = str.replace(/[/_-]([a-z])/gi, s => {
-    return s.toUpperCase()
-  })
-  str = str.replace(/_(of|es)_/i, (s) => s.toLowerCase())
-  str = str.replace(/\/gmt/i, '/GMT')
-  str = str.replace(/\/utc/i, '/UTC')
-  str = str.replace(/\/Dumontdurville$/i, '/DumontDUrville')
-  str = str.replace(/\/Mcmurdo$/i, '/McMurdo')
-  str = str.replace(/\/Port-au-prince$/i, '/Port-au-Prince')
-  if (str === 'Utc') {
-    str = 'UTC'
-  }
-  return str
-}
-
 //get metadata about this timezone
 const timezone = s => {
   const zones = s.timezones
diff --git a/src/timezone/titleCase.js b/src/timezone/titleCase.js
new file mode 100644
index 0000000..63175b6
--- /dev/null
+++ b/src/timezone/titleCase.js
@@ -0,0 +1,18 @@
+//iana codes are case-sensitive, technically
+const titleCase = str => {
+  str = str[0].toUpperCase() + str.substr(1)
+  str = str.replace(/[/_-]([a-z])/gi, s => {
+    return s.toUpperCase()
+  })
+  str = str.replace(/_(of|es)_/i, (s) => s.toLowerCase())
+  str = str.replace(/\/gmt/i, '/GMT')
+  str = str.replace(/\/utc/i, '/UTC')
+  str = str.replace(/\/Dumontdurville$/i, '/DumontDUrville')
+  str = str.replace(/\/Mcmurdo$/i, '/McMurdo')
+  str = str.replace(/\/Port-au-prince$/i, '/Port-au-Prince')
+  if (str === 'Utc') {
+    str = 'UTC'
+  }
+  return str
+}
+export default titleCase
diff --git a/src/whereIts.js b/src/whereIts.js
index 0b186ab..72fe667 100644
--- a/src/whereIts.js
+++ b/src/whereIts.js
@@ -1,4 +1,5 @@
 import Spacetime from './spacetime.js'
+import titleCase from './timezone/titleCase.js'
 // const timezones = require('../data');
 
 const whereIts = (a, b) => {
@@ -33,6 +34,6 @@ const whereIts = (a, b) => {
     }
     return false
   })
-  return tzs
+  return tzs.map(titleCase)
 }
 export default whereIts
diff --git a/tests/timezones/timezone-name.test.js b/tests/timezones/timezone-name.test.js
index b0f5a08..779d520 100644
--- a/tests/timezones/timezone-name.test.js
+++ b/tests/timezones/timezone-name.test.js
@@ -23,3 +23,12 @@ test('titlecase', (t) => {
   })
   t.end()
 })
+
+test('whereIts returns titlecased names', (t) => {
+  const tzs = spacetime.whereIts('12:00am', '11:59pm')
+  t.ok(tzs.includes('Antarctica/Mawson'), 'Antarctica/Mawson')
+  t.ok(tzs.includes('America/Port-au-Prince'), 'America/Port-au-Prince')
+  const wrong = tzs.filter(tz => tz !== spacetime.now(tz).timezone().name)
+  t.deepEqual(wrong, [], 'same name as timezone()')
+  t.end()
+})