[ButtonBase] Check before accessing rippleRef.current

mui · Apr 28, 2020 · 438cc73 · 438cc73
1 parent ceb7cda
commit 438cc73
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/packages/material-ui/src/ButtonBase/ButtonBase.js b/packages/material-ui/src/ButtonBase/ButtonBase.js
@@ -113,7 +113,7 @@ const ButtonBase = React.forwardRef(function ButtonBase(props, ref) {
   );
 
   React.useEffect(() => {
-    if (focusVisible && focusRipple && !disableRipple) {
+    if (focusVisible && focusRipple && !disableRipple && rippleRef.current) {
       rippleRef.current.pulsate();
     }
   }, [disableRipple, focusRipple, focusVisible]);