crash on variance annotations in typescript 4.7

[DetachHead]

https://devblogs.microsoft.com/typescript/announcing-typescript-4-7-beta/#optional-variance-annotations-for-type-parameters

Environments:

• Prettier Version: 2.6.2
• Running Prettier via: cli
• Runtime: node 16.11.1
• Operating System: windows 10
• Prettier plugins (if any):

Steps to reproduce:

interface Foo<in T> {}

Expected behavior:
no crash
Actual behavior:

src\utilityTypes\misc.ts[error] src\utilityTypes\misc.ts: SyntaxError: Type parameter declaration expected. (24:15)
[error]   22 |     : false
[error]   23 |
[error] > 24 | interface Foo<in T> {}
[error]      |               ^
[error]   25 |
[error]   26 | /**
[error]   27 |  * Checks if two types are equal at the type level.

[fisker]

Please follow the issue template, otherwise this issue will be closed.

[DetachHead]

@fisker um i did?

i answered every one of these

[sosukesuzuki]

We track the status of TS 4.7 support in #12640