Svelte shopping cart with a custom store, writable store & derived store

This Project is part of a YT-Video: https://www.youtube.com/watch?v=2QsqgEU7pcU

How ???

git clone https://github.com/sveltecasts/015-svelte-cart-custom-store.git
cd 015-svelte-cart-custom-store/
npm i
npm run dev