From c5f0ecf43a521a509cedcb520f39381d1d3ff36a Mon Sep 17 00:00:00 2001
From: Yunfei He <i.heyunfei@gmail.com>
Date: Thu, 27 May 2021 18:20:09 +0800
Subject: [PATCH] fix(types): should unwrap tuple correctly

---
 src/reactivity/ref.ts         |  2 +-
 test-dts/reactivity.test-d.ts | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)
 create mode 100644 test-dts/reactivity.test-d.ts

diff --git a/src/reactivity/ref.ts b/src/reactivity/ref.ts
index ccef2a8b..aa0ca98e 100644
--- a/src/reactivity/ref.ts
+++ b/src/reactivity/ref.ts
@@ -31,7 +31,7 @@ export type UnwrapRef<T> = T extends Ref<infer V>
 
 type UnwrapRefSimple<T> = T extends Function | CollectionTypes | BaseTypes | Ref
   ? T
-  : T extends Array<any>
+  : T extends ReadonlyArray<any>
   ? { [K in keyof T]: UnwrapRefSimple<T[K]> }
   : T extends object
   ? UnwrappedObject<T>
diff --git a/test-dts/reactivity.test-d.ts b/test-dts/reactivity.test-d.ts
new file mode 100644
index 00000000..fcb67082
--- /dev/null
+++ b/test-dts/reactivity.test-d.ts
@@ -0,0 +1,11 @@
+import { ref, Ref, reactive, expectType } from './index'
+
+describe('should unwrap tuple correctly', () => {
+  const readonlyTuple = [ref(0)] as const
+  const reactiveReadonlyTuple = reactive(readonlyTuple)
+  expectType<Ref<number>>(reactiveReadonlyTuple[0])
+
+  const tuple: [Ref<number>] = [ref(0)]
+  const reactiveTuple = reactive(tuple)
+  expectType<Ref<number>>(reactiveTuple[0])
+})