fix: 修复useLocale 不传 message 会丢失原有语言配置的问题 (#209)

Author: wangruiStart

src/uni_modules/wot-design-uni/locale/index.ts

@@ -26,7 +26,9 @@ export const Locale = {
 
   use(newLang: string, newMessages?: Message) {
     lang.value = newLang
-    this.add({ [newLang]: newMessages })
+    if (newMessages) {
+      this.add({ [newLang]: newMessages })
+    }
   },
 
   add(newMessages: Message = {}) {