1. Example that spins up an express server in the example you can actually hit: http://blog.tonicdev.com/2016/03/09/snapshots.html
2. A blog post I wrote about hacking JSX with many runnable examples: http://tolmasky.com/2016/03/24/generalizing-jsx/
3. Node's fs docs with the examples converted to embed: http://capicue.com/fs.html
For other people: Is there anything like Tonic Dev (notebook kind of thing) that runs locally? I want to love Tonic but without offline support, that will never happen...