My site is built with Svelte. This is how you run it:

cd nosmallthing.nl

Note that you will need to have Node.js installed.

Install the dependencies...

npm install

...then start Rollup:

npm run dev

Navigate to localhost:5000. You should see the site running. Edit a component file in src, save it, and reload the page to see your changes.

I'm using netlify (which is pretty awesome). Deploy is done automatically when the master branch is pushed to the Github repo. Yeah, that's all...