Do react-helmet support ESM tree shaking? 

**Do you want to request a *feature* or report a *bug*?**

- I wonder react-helmet support tree shaking or not.

**What is the current behavior?**

- I built my own js library which use helmet's Head tag,  bundled with VIteJS.
helmet bundled chunk gets me about 200kb, I wonder it's normal work. 
