There are some interesting bits in there - the basic structure is:
- the post itself is at src/Interactions
- the code changes using a ScrollEvent component (src/_ui/Code)
- the code examples (inline and fixed on the right) are using the Code component (src/_ui/Code)
- the inline demos are using the LocalExample component (src/_ui/LocalExample). The LocalExample component basically builds an iframe and displays it
Both of these components support:
- a list of lines that are removed
- a list of lines that are added
I've been liking that this setup lets me have complete examples that work as standalone web pages, but I can also edit them on the fly and work through changes on-the-fly. Which lets me talk about interim states [like this one](https://github.com/Wattenberger/blog/blob/master/src/Interac...).
I'm happy to answer any questions about it, the code is a bit messy :)
