Svelte 5: $$slots is not defined if runes are used in the component

[scampos-s3d]

Describe the bug

When any kind of rune is used in a component, $$slots is not defined so cannot use {#if $$slots}
. Watching the js output seems like the line const $$slots = $.sanitize_slots($$props); is not created. Forcing it with {#if eval('unwrap($$props).children')} makes it work.

Reproduction

Repl

Logs

`$$slots is not defined`

System Info

System:
    OS: Windows 11 10.0.22621
    CPU: (16) x64 Intel(R) Core(TM) i9-9900K CPU @ 3.60GHz
    Memory: 30.37 GB / 63.93 GB
  Binaries:
    Node: 18.14.1 - C:\Program Files\nodejs\node.EXE
    npm: 9.3.1 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Edge: Spartan (44.22621.2134.0), Chromium (119.0.2151.72)
    Internet Explorer: 11.0.22621.1
  npmPackages:
    svelte: 5.0.0-next.14 => 5.0.0-next.14

Severity

blocking an upgrade

[scampos-s3d]

I just didn't read the doc Snippets

[dummdidumm]

Reopening - although snippets are the recommended way to do this in the future, $$slots should still be usable in runes mode.