SSR doesn't work for Svelte 5

[ravecat]

Thanks for your work! I was customizing Phoenix + Svelte integration and encountered a problem with SSR not working. SSR bundle contains the necessary code, however, the page does not display in the browser when JS is disabled

I made an example in repository

I have made all the necessary changes in this commit. Could you give me a clue as to what I'm missing?

[derrickreimer]

I took a look over things and I'm a bit stumped at the moment! I'm not a Svelte user myself, so my familiarity with that world is limited. It looks like the SSR call is rendering this:

<!--[--><!--[!--><!--]--><!--]-->

From what I gather, these are control markers that Svelte injects into the output. I'm not sure why the output content is empty. Perhaps @thisistonydang has some insight? 🙏

[thisistonydang]

Unfortunately, I haven’t used inertia-phoenix in a while, so I haven’t had the chance to try it out with Svelte 5. My previous setup that worked was with Svelte 4. If you haven’t figured it out yet, the another place I'd ask for help is the Inertia.js Discord. They have a Svelte-specific channel where others might have some good insight. Sorry I couldn’t be more helpful!

[andresgutgon]

I'm using React and the React adapter has a render where we pass the function to render as a string the generated HTML code.

I don't see something similar in inertia Svelte https://github.com/inertiajs/inertia/blob/master/packages/svelte/src/createInertiaApp.ts#L10-L27

I think you should open an issue on Inertia repo