It looks like this file needs to be fixed too.

Thanks for submitting this PR.
Yes, isPending is obsolete and should be removed.

Code !authState.isPending && should be removed completely, no need to change it to !authState because there are lines before that make this check:

Same for this file

@denysoblohin-okta How should I change this line? If I remove the conditionals, will a login button still be rendered?

{!authState.isPending && !authState.isAuthenticated && <Menu.Item onClick={login}>Login</Menu.Item>}

@mraible where did you see the issues with the code snippet above? this sample repo or other apps?
As optional chaining is a part of ES2020, you may need to config the transpiler to make it work.

@shuowu It worked for OktaDev Schematics, which generates an app with the latest version of Create React App. oktadev/schematics@2c90198