From 9fc8523762131deb5952ac1d9f9f61b9728612be Mon Sep 17 00:00:00 2001
From: jaywcjlove <398188662@qq.com>
Date: Sun, 23 Jul 2023 00:19:37 +0800
Subject: [PATCH] doc: update docs/typescript.md

---
 docs/typescript.md | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/docs/typescript.md b/docs/typescript.md
index 8ba6d56..dabc3f7 100644
--- a/docs/typescript.md
+++ b/docs/typescript.md
@@ -1503,6 +1503,21 @@ type Age2 = Person["age"];
 // type Age2 = number
 ```
 
+### 范型推导出列表字面量
+<!--rehype:wrap-class=col-span-2-->
+
+```ts
+const a = <T extends string>(t: T) => t;
+const b = <T extends number>(t: T) => t;
+const c = <T extends boolean>(t: T) => t;
+const d = a("a");  // const d: 'a'
+const e = a(1);    // const d: 1
+const f = a(true); // const d: true
+
+const g = <T extends string[]>(t: [...T]) => t;  // 这里t的类型用了一个展开运算
+const h = g(["111", "222"]);  // 类型变成["111", "222"]了
+```
+
 .d.ts 模版
 ---