bug fix and performance improvements

miniprogram/miniprogram_npm/tdesign-miniprogram/empty/props.js

@@ -0,0 +1,15 @@
+const props = {
+    description: {
+        type: String,
+    },
+    externalClasses: {
+        type: Array,
+    },
+    icon: {
+        type: null,
+    },
+    image: {
+        type: String,
+    },
+};
+export default props;