Rendering Modes
By default, Svelte components are rendered on the server and hydrated on the client.
To render only on the client (perhaps becuase you are using a 3rd party library that uses browser globals in its initialization script, and therefor cannot be SSR'd) you can just pass in mode: "csr".
To server-render something without hyrdration, just don't call a Svelte component from your Go Templ component
*Tip: Try loading this page with Javascript disabled and compare the rendered output.
SSR Only
SSR + Hydration