title: react-native: switch from yarn to npm
body: <p>Is there a step-by-step process to change a react-native project from using yarn as the package manager to using npm? All I can find after several days of searching are instructions to go from npm to yarn and a package called <a href="https://github.com/mixmaxhq/deyarn" rel="noreferrer">deyarn</a> which doesn't seem to fully work for me. Does anyone have a good resource on this? </p>