props.parentMenu is undefined

All of the sudden my application started crashing at node_modules/antd/node_modules/rc-menu/es/SubMenu.js:260

260 | var getPopupContainer = props.parentMenu.isRootMenu ? props.parentMenu.props.getPopupContainer : function (triggerNode) {
     return triggerNode.parentNode; 
};

with an error: TypeError: props.parentMenu is undefined

I fixed it by coalescing the undefined:

var getPopupContainer = props.parentMenu ? props.parentMenu.isRootMenu ? props.parentMenu.props.getPopupContainer : function (triggerNode) {
      return triggerNode.parentNode;
 } : null;

But I don't really know if that's the best way to do this. I'm using rc-menu as a dependency of antd library.

Start at node_modules/antd/node_modules/rc-menu/es/SubMenu.js around line 260 and trace how parentMenu is supplied when the crash occurs. Reproduce the failure through the reported antd dependency and compare it with the proposed null check. Done means identifying the valid parentMenu behavior and covering the resulting fix with the relevant project test or reproduction.