Hot Reloading TypeScript component triggers rendering of ancestor TypeScript components

I'm not sure that this is directly related to this transformer, but this is quite frankly the best documentation for working with React Native and TypeScript that I can find, so I'm hoping that it can either be fixed in the transformer directly or at least someone has some advice.

It seems like if you make a change to a TypeScript, .tsx component it triggers a render of any ancestors during hot reloading. If you make a change to a .js component, it won't do this -- even if the ancestors are .tsx components.

You can see an example of this here: https://github.com/ajcrites/TsHotReload