From 2e38e97c772ffd54733d09e0b20e403a8d23ec2d Mon Sep 17 00:00:00 2001
From: Utopia <greatauk11@gmail.com>
Date: Mon, 6 Mar 2023 23:00:10 +0800
Subject: [PATCH] feat: new function - isWeixin

---
 README.md                         |  1 +
 packages/dom/src/index.ts         |  3 ++-
 packages/dom/src/isWeixin.test.ts | 17 +++++++++++++++++
 packages/dom/src/isWeixin.ts      |  8 ++++++++
 4 files changed, 28 insertions(+), 1 deletion(-)
 create mode 100644 packages/dom/src/isWeixin.test.ts
 create mode 100644 packages/dom/src/isWeixin.ts

diff --git a/README.md b/README.md
index f9b8b8a..4066b65 100644
--- a/README.md
+++ b/README.md
@@ -62,6 +62,7 @@ pnpm add @utopia-utils/dom
 
 * waitForSelector: 等待指定的选择器匹配的元素出现在页面中，如果调用此方法时已经有匹配的元素，那么此方法立即返回。 如果指定的选择器在超时时间后扔不出现，返回 `null`。[source](https://github.com/GreatAuk/utopia-utils/blob/main/packages/dom/src/waitForSelector.ts)
 * panzoom: 为指定的元素添加拖拽缩放功能。[source](https://github.com/GreatAuk/utopia-utils/blob/main/packages/dom/src/panzoom/core.ts)
+* isWeixin: 判断是否是微信浏览器。[source](https://github.com/GreatAuk/utopia-utils/blob/main/packages/dom/src/isWeixin.ts)
 ### 杂项
 * [defineDictionary](#defineDictionary): 定义业务字典。 **typesafe** [source](https://github.com/GreatAuk/utopia-utils/blob/main/packages/core/src/defineDictionary.ts)
 * ~~[createEnumFromOptions](#createEnumFromOptions): 通过 `options` 自动生成对应的 `enum`， 后期只需要维护 `options`。**typesafe**。[source](https://github.com/GreatAuk/utopia-utils/blob/main/packages/core/src/createEnumFromOptions.ts)~~
diff --git a/packages/dom/src/index.ts b/packages/dom/src/index.ts
index 2f63faa..70164e6 100644
--- a/packages/dom/src/index.ts
+++ b/packages/dom/src/index.ts
@@ -1,2 +1,3 @@
-export * from './waitForSelector'
 export * from './panzoom'
+export * from './isWeixin'
+export * from './waitForSelector'
diff --git a/packages/dom/src/isWeixin.test.ts b/packages/dom/src/isWeixin.test.ts
new file mode 100644
index 0000000..19ab82e
--- /dev/null
+++ b/packages/dom/src/isWeixin.test.ts
@@ -0,0 +1,17 @@
+/**
+ * @vitest-environment happy-dom
+ */
+import { isWeixin } from './isWeixin'
+
+describe('isWeixin', () => {
+  afterEach(() => {
+    vi.resetAllMocks()
+  })
+  it('should return false if ua does not contain MicroMessenger', () => {
+    expect(isWeixin()).toBe(false)
+  })
+  it('should return true if ua contains MicroMessenger', () => {
+    vi.spyOn(navigator, 'userAgent', 'get').mockReturnValueOnce('MicroMessenger')
+    expect(isWeixin()).toBe(true)
+  })
+})
diff --git a/packages/dom/src/isWeixin.ts b/packages/dom/src/isWeixin.ts
new file mode 100644
index 0000000..835eb57
--- /dev/null
+++ b/packages/dom/src/isWeixin.ts
@@ -0,0 +1,8 @@
+/**
+ * Check if the current environment is Weixin. (微信)
+ * @returns A boolean value.
+ */
+export function isWeixin() {
+  const ua = navigator.userAgent.toLowerCase()
+  return /MicroMessenger/i.test(ua)
+}