diff --git a/src/base/1.pane.js b/src/base/1.pane.js
index f613cbdd7..c87e33bfc 100644
--- a/src/base/1.pane.js
+++ b/src/base/1.pane.js
@@ -6,21 +6,23 @@
  * @extends BI.Widget
  * @abstract
  */
-import { shortcut } from "../core/decorator";
+import { Widget, shortcut } from "../core";
 
 @shortcut()
-export class Pane extends BI.Widget {
+export default class Pane extends Widget {
     static xtype = "bi.pane";
     static EVENT_LOADED = "EVENT_LOADED";
     static EVENT_LOADING = "EVENT_LOADING";
 
-    props = {
-        _baseCls: "bi-pane",
-        tipText: BI.i18nText("BI-No_Selected_Item"),
-        loadingText: "",
-        loadingSize: "small",
-        overlap: true,
-        onLoaded: BI.emptyFn,
+    _defaultConfig() {
+        return BI.extend(super._defaultConfig(), {
+            _baseCls: "bi-pane",
+            tipText: BI.i18nText("BI-No_Selected_Item"),
+            loadingText: "",
+            loadingSize: "small",
+            overlap: true,
+            onLoaded: BI.emptyFn,
+        });
     }
 
     _assertTip() {
@@ -129,5 +131,3 @@ export class Pane extends BI.Widget {
         this.check();
     }
 }
-
-BI.extend(BI, { Pane });
diff --git a/src/base/index.js b/src/base/index.js
new file mode 100644
index 000000000..c10043847
--- /dev/null
+++ b/src/base/index.js
@@ -0,0 +1,9 @@
+import Pane from "./1.pane";
+
+BI.extend(BI, {
+    Pane,
+});
+
+export {
+    Pane,
+}
\ No newline at end of file
diff --git a/src/core/index.js b/src/core/index.js
index d168cc0bc..8c345df4c 100644
--- a/src/core/index.js
+++ b/src/core/index.js
@@ -1,3 +1,4 @@
+import { shortcut } from "./decorator";
 import OB from "./3.ob";
 import Widget from "./4.widget";
 import Action from "./action/action";
@@ -35,6 +36,7 @@ BI.extend(BI, {
 });
 
 export {
+    shortcut,
     OB,
     Widget,
     Action,