title: Native dynamic-sized UI component for React Native
body: <p>I want to build iOS react native component - analog of Text, where width and height is not known, but calculated dynamically depending from its content. As I see from debugging, RCTText.drawRect method is called with calculated rect already, but my component is called with empty rect if i did not define sizes via styles.</p>
  
  <p>How to define needed rect for custom View?</p>