title: React-native --variant option
body: <p>What are the possible values for <code>--variant</code> option except for <code>release</code>? Where is it documented? I couldn't find in react-native docs.</p>
  
  <p>Should I specify this option with <code>debug</code> or <code>devDebug</code> value for debug build?</p>
  
  <p>thanks </p>