From 00b13f8b8a97e17ccfad759ebfb056f019eb0414 Mon Sep 17 00:00:00 2001
From: Ray Wong <rayrw@users.noreply.github.com>
Date: Mon, 26 Dec 2022 08:02:05 +0900
Subject: [PATCH] `CamelCase`: Fix handling of non-literal strings (#531)

---
 source/camel-case.d.ts | 4 +++-
 test-d/camel-case.ts   | 3 +++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/source/camel-case.d.ts b/source/camel-case.d.ts
index cdc5aa229..76722861d 100644
--- a/source/camel-case.d.ts
+++ b/source/camel-case.d.ts
@@ -74,5 +74,7 @@ const dbResult: CamelCasedProperties<RawOptions> = {
 @category Template literal
 */
 export type CamelCase<Type, Options extends CamelCaseOptions = {preserveConsecutiveUppercase: true}> = Type extends string
-	? Uncapitalize<CamelCaseFromArray<SplitWords<Type extends Uppercase<Type> ? Lowercase<Type> : Type>, Options>>
+	? string extends Type
+		? Type
+		: Uncapitalize<CamelCaseFromArray<SplitWords<Type extends Uppercase<Type> ? Lowercase<Type> : Type>, Options>>
 	: Type;
diff --git a/test-d/camel-case.ts b/test-d/camel-case.ts
index e866ad76e..675a34946 100644
--- a/test-d/camel-case.ts
+++ b/test-d/camel-case.ts
@@ -75,3 +75,6 @@ expectType<CamelCase<'fooBARBiz', {preserveConsecutiveUppercase: false}>>('fooBa
 
 expectType<CamelCase<'foo BAR-Biz_BUZZ'>>('fooBARBizBUZZ');
 expectType<CamelCase<'foo BAR-Biz_BUZZ', {preserveConsecutiveUppercase: false}>>('fooBarBizBuzz');
+
+expectType<CamelCase<string>>('string' as string);
+expectType<CamelCase<string, {preserveConsecutiveUppercase: false}>>('string' as string);