BI-137665 fix: 代码优化

packages/fineui/src/base/foundation/message.js

@@ -33,10 +33,10 @@ const defaultConfig = {
 
 export const Msg = {
     alert(title, message, callback, config = defaultConfig) {
-        this._show(false, title, message, callback, config);
+        _show(false, title, message, callback, config);
     },
     confirm(title, message, callback, config = defaultConfig) {
-        this._show(true, title, message, callback, config);
+        _show(true, title, message, callback, config);
     },
     toast(message, options, context) {
         isString(options) && (options = { level: options });
@@ -97,7 +97,9 @@ export const Msg = {
             toast.destroy?.();
         };
     },
-    _show(hasCancel, title, message, callback, config) {
+};
+
+function _show(hasCancel, title, message, callback, config) {
     isNull($mask) &&
     ($mask = Widget._renderEngine
         .createElement("<div class=\"bi-z-index-mask\">")
@@ -265,5 +267,4 @@ export const Msg = {
     };
 
     messageShows[messageShows.length] = createWidget(conf);
-    },
+}
-};