First, install npm
Then,
cd svelte && npm install
To run your development server just run,
npm run dev
Before committing, please run prettier to automatically format your code,
npm run prettier
Before staring to development, deactivate the service worker, otherwise all files will be loaded from the cache and you will not see your changes.
In chrome: Developer console -> Application -> Service Workers ->
Bypass for network.
If you add a new static file, or if you make call to an API, you might want to have a look at the service worker (sw.js) to create your cache rule, so the application can work offline. If needed, increment the cache version.