Why is offsetHeight available on components but not clientHeight?

[gbirke]

I recently ran into a situation where I converted a DOM element into a component, but kept the ref on it. Suddenly, the parts of my code that used the clientHeight of my ref no longer worked because apparently components only support offsetHeight. I now have two options:

1. use forwardRef to pass the reference to the DOM element from my component to the parent. This looks ugly.
2. swap clientHeight with offsetHeight, but that might miscalculate when it gets a border or pseudo-elements.

Is there a better way to get the client height of a component?