In the final section of the workshop, we'll take a tour of Sapper, and look through the code for an example app, Birdland. The code for Birdland is available on GitHub.
What is Sapper?
If Svelte is a component framework, Sapper is an application framework. Sapper is to Svelte as Next.js is to React.
It's the Svelte team's attempt to answer the question 'how do you build a fully-featured application?' It features server-side rendering, code-splitting, filesystem-based routing, and lots of other good stuff.
Many sites built with Sapper can be 'exported' as static files, à la Jamstack. Others, like Birdland, need to do dynamic server-side rendering. Sapper supports both, so you can use it as a static site generator without worrying that you'll outgrow it as your requirements change.