Svelte 5: $$Events is an illegal variable name

[rChaoz]

Describe the bug

I was testing updating my projecte to Svelte 5, and it seems like it believes that $$Events is a variable, but it's actually a type.

Probably related to #11416

Reproduction

interface $$Events {
    commit: CustomEvent<string>
    keydown: KeyboardEvent
}

type ExtractEventMap<T> = {
    [key in keyof T]: T[key] extends CustomEvent<infer U> ? U : never
}

// error here:
const dispatch = createEventDispatcher<ExtractEventMap<$$Events>>()

So declaring the interface itself is no issue, just my edge-case here.

Logs

21:12:07 [vite] Internal server error: [...] `$$Events` is an illegal variable name. To reference a global variable called `$$Events`, use `globalThis.$$Events`
  Plugin: vite-plugin-svelte

System Info

System:
    OS: Windows 10 10.0.19045
    CPU: (20) x64 12th Gen Intel(R) Core(TM) i7-12700KF
    Memory: 13.10 GB / 31.86 GB
  Binaries:
    Node: 20.8.0 - C:\Program Files\nodejs\node.EXE
    Yarn: 4.1.1 - C:\Program Files\nodejs\yarn.CMD
    npm: 10.2.1 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Edge: Spartan (44.19041.1266.0)
    Internet Explorer: 11.0.19041.1566

Severity

annoyance