I was hoping to make more progress, but a bug really set me back. I got the `Uncaught Error: Invariant Violation: Element type is invalid: expected a string (for built-in components) or a class/function but got: object` and a quick Google search didn’t really help. One reason this error can happen is that the entry point js file is missing. My entry point file is called `app.js`. Somehow, it got renamed to `App.js`. The filesystem is case-insensitive, and git was treating them as the same file, but React Native was not. I fixed this with `git mv App.js tmp` followed by `git mv tmp app.js`.