init() doesn't set initial cookie until set() or update() is called about svelte-kit-cookie-session HOT 2 CLOSED

I could of course add this to +layout.server.ts:

    if (locals.session.data.id === undefined) {
        await locals.session.update(() => ({id: crypto.randomUUID()}))
    }

But if I had multiple independent toplevel roots, then I'd have to add this to each toplevel +layout.server.ts for each root. (Not a very common scenario, I admit.)

from svelte-kit-cookie-session.

You can now use the saveUninitialized: true option to save the output of the init command if no session is saved.

from svelte-kit-cookie-session.