fix(flexible): 添加可选链以安全地处理屏幕方向变化事件监听

Author: susanforme

packages/flexible/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@cherrywind/flexible",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "private": false,
   "keywords": [
     "flexible"

packages/flexible/src/index.ts

@@ -223,14 +223,14 @@ export const flexible = (options: FlexibleOptions = {}): (() => void) => {
   document.addEventListener('visibilitychange', visibilityHandler);
   window.addEventListener('resize', resizeHandler);
   if (orientationchange) {
-    screen.orientation.addEventListener('change', resizeHandler);
+    screen.orientation?.addEventListener?.('change', resizeHandler);
   }
   // 返回清理函数
   return () => {
     window.removeEventListener('resize', resizeHandler);
     document.removeEventListener('visibilitychange', visibilityHandler);
     if (orientationchange) {
-      screen.orientation.removeEventListener('change', resizeHandler);
+      screen.orientation?.removeEventListener?.('change', resizeHandler);
     }
   };
 };