More descriptive docs for getting started with edge functions

[dbzx10299]

Which problem is this feature request solving?

The docs state that to get started with edge functions you create a default export of an arrow function in a file under netlify/edge-functions/hello.js and just run netlify dev and in the browser everything should work if you visit http://localhost:8888/hello. I am on mac and this did not work at all and I could not find any information online.

The first problem I encountered when I ran netlify dev was that there was a message

Setting up the Edge Functions environment. This may take a couple of minutes.

This would never finish at all. If I would visit http://localhost:8888/hello then I would just get a 404.

I had to run brew install deno otherwise this would not work. Once I installed deno and ran netlify dev I got a new message

Warning: Could not process edge functions dependency graph. Live reload will not be available.

The only way to get this to work was to run git init and git commit -m "initial commit"

Describe the solution you'd like

The docs are incomplete for getting started with edge functions. Getting everything to work is not so obvious, and I also found a netlify channel on youtube documenting how to create an edge function. It makes no mention of having deno installed on the machine. I cloned the repo from the youtube video (https://www.youtube.com/watch?v=6pEVhH37xQE&t=398s) and nothing worked until I installed deno.

I would like to see more complete docs for how to get a basic bare bones example working because finding the solution was not straight forward and I am sure many others will run into a roadblock there as well.

Pull request (optional)

• I can submit a pull request.