fix: prevent error when nativeElement is not available (#537)

Co-authored-by: afc163 <[email protected]>

Author: cncolder

src/Dialog/Content/index.tsx

@@ -52,6 +52,10 @@ const Content = React.forwardRef<ContentRef, ContentProps>((props, ref) => {
   }
 
   function onPrepare() {
+    if (!dialogRef.current?.nativeElement) {
+      return;
+    }
+
     const elementOffset = offset(dialogRef.current.nativeElement);
 
     setTransformOrigin(

tests/index.spec.tsx

@@ -278,6 +278,18 @@ describe('dialog', () => {
         document.querySelector<HTMLElement>('.rc-dialog').style['transform-origin'],
       ).toBeTruthy();
     });
+
+    it('should not throw error when nativeElement is not available', () => {
+      expect(() => {
+        global.onAppearPrepare?.();
+      }).not.toThrow();
+
+      render(<Dialog visible />);
+
+      expect(() => {
+        global.onAppearPrepare?.();
+      }).not.toThrow();
+    });
   });
 
   it('can get dom element before dialog first show when forceRender is set true ', () => {