🐛 BUG: Svelte quick start does not explain how to enable fast reloads

[Plecra]

Quick checklist

• [X] I am using the latest version of Snowpack and all plugins.

What package manager are you using?

npm

What operating system are you using?

Windows

Describe the bug

https://github.com/rixo/svelte-hmr#preservation-of-local-state

A while ago, the default behaviour of svelte HMR was changed to reset component-local state, and variables which should be preserved need to be annotated with // @hmr:keep. The quick start on the website (and the templates in the repo) do not use this, so their fast reloading demo is broken. Anecdotally, this was pretty confusing for me getting started :D

Steps to reproduce

1. npx create-snowpack-app using template @snowpack/app-template-svelte
2. npm start in the new directory
3. Edit some text in App.svelte and save
4. The value of the timer is reset, instead of continuing to increase

Link to minimal reproducible example (optional)

No response

[rob-myers]

Thanks for explaining this, it was totally confusing.