Open sourced: a utility for shallow rendering React components

After lots of copy/pasting a small utility that makes shallow rendering a React component a little easier, I decided to open source it. It’s called renderShallow, and it's now on Github and npm as render-shallow.

My motivation for it came when I started noticing that in most of the React component tests I wrote, I simply wanted a shallow rendered component to test. The ShallowRenderer API is a little verbose, between the creation and the getting of the output. So I started abstracting that (the .output returned from renderShallow). When I found myself wanting to rerender the component, either because of state or props changes, I added the ability to both re-fetch the output (rerender), or render the element again with new props (rerenderElement).

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