How do I ensure that the correct type of child component is placed in the slot of the parent component?

[intzaaa]

For example, I have a parent component Foo, and I want to only allow the Bar component to be filled in Foo's slot.

<!-- OK -->
<Foo>
  <Bar />
</Foo>

<!-- ERROR -->
<Foo>
  <Other />
</Foo>

Thanks in advance to everyone who answers my questions.

[brunnerh]

To my knowledge there is no built-in way to do this.

At runtime you might be able to error in case the components can be tightly coupled by having them communicate via a context.