I am building a site with Sveltekit and in-IDE tests (npm run build) show things fine, the routing works and pages display correctly. However when I've tried to upload the app to a dev site provided to me the framework doesn't seem to load.
It loads app.html but doesn't seem to pick up that it's a sveltekit program, instead only displaying '%sveltekit.head% %sveltekit.body%'
Here's my app.html:
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<link rel="icon" href="%sveltekit.assets%/favicon.png" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
%sveltekit.head%
</head>
<body data-sveltekit-preload-data="hover">
<div style="display: contents">%sveltekit.body%</div>
</body>
</html>I'm inexperienced in both sveltekit and FTP hosting so I'm wondering if I've uploaded the wrong file to the server? On fileZilla (and when testing with vs-code sftp extension) I've mostly tried uploading the whole app folder but is this incorrect?
app.html is the source file, not the built output.
You need to upload the files that SvelteKit generates on build.
If you deploy via FTP, this sounds like you have a static file server. If so you should check out the docs on static site generation. SSG requires using the adapter from @sveltejs/adapter-static which will by default output the result to a build directory which is what you should upload.