title: Force react native in dev mode to reload specific file without resetting all cache
body: <p>I have a file with a piece of code which depends on environment variable (babel transforms it via transform-inline-environment-variables). So if I run something like <code>ENV_VAR=&quot;this&quot; yarn start</code> it is set to &quot;this&quot; in that file, but if I re-run <code>ENV_VAR=&quot;that&quot; yarn start</code> react native doesn't pick up the change. I have to re-run with --reset-cache option or do some modification to this file manually, for example add console.log. Reset cache take long to rebuild everything and doing manual change looks a bit stupid for me.</p>
  <p>Any idea if I can force react native to rebuild this file?</p>