(This is an example, not a question. However, since it’s a minimal example, I thought it might fit “community support” better than “showcase”)
The documentation on prebuilt extensions is a bit sparse, and it took me a while to figure out how to set up a working example. I thought sharing the example would be useful for others who also want to use a prebuilt extension. This repository contains the minimal prebuilt extension example, along with some notes that I did not find to be obvious when I was originally attempting to get the example working. It re-writes the “Wrapping a JavaScript library” example as a prebuilt extension.
