Svelte 5: Typescript generics in components are marked as deprecated

[mr-josh]

Describe the bug

Typescript marks components with generics as deprecated.

Reproduction

https://github.com/mr-josh/svelte-5-generics-issue

Is not too hard to reproduce in any project. Using either script tag generics or the $$Generic helper will trigger this issue.

Confirmed on local and in a codespace linux machine.

Logs

The signature '(options: ComponentConstructorOptions<{ value: string; }>): Component__SvelteComponent_<string>' of '$$_tnenopmoC0C' is deprecated.js(6387)

System Info

System:
    OS: Windows 10 10.0.19045
    CPU: (8) x64 Intel(R) Core(TM) i7-9700 CPU @ 3.00GHz     
    Memory: 7.19 GB / 15.94 GB
  Binaries:
    Node: 20.3.0 - C:\Program Files\nodejs\node.EXE
    npm: 9.6.7 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Edge: Spartan (44.19041.3636.0), Chromium (119.0.2151.72)
    Internet Explorer: 11.0.19041.3636
  npmPackages:
    svelte: ^5.0.0-next.1 => 5.0.0-next.9

Severity

annoyance

[dummdidumm]

Either we un-deprecate the constructor, which could give the false premise of this working, or we adjust language tools to use the new constructor if version 5 is detected. I lean towards the latter.

[dummdidumm]

Fixed in latest version of the VS Code extension / svelte-check