Proper typing of components that use flags as parameters

I want to have a simple helper compent, that evaluates a flag and then either shows or hides its children, something like:
``

How can I properly type these props? I tried out several variants of
```
type OptionalContentProps =
| {
flag: KeyPathString[];

show: true;
hide?: false | undefined | null;
}
| {
flag: KeyPathString[];
show?: false | undefined;
hide: true;
};
```

but can't get this to work: Inside the component, I use `useFlag(flag) ` to evaluate the flag, so I basically need to reproduce the type that `useFlag` is using.

And the types used inside the lib like `KeyPathString` are not exported, so I had to re-write them: I am probably doing something basic wrong here, so any hint is appreciated!