Bug: [no-invalid-void-type] Does not allow using void as a default type for a generic argument

[bogdanb]

Before You File a Bug Report Please Confirm You Have Done The Following...

• I have tried restarting my IDE and the issue persists.
• I have updated to the latest version of the packages.
• I have searched for related issues and found none that matched my issue.
• I have read the FAQ and my problem is not listed.

Playground Link

https://typescript-eslint.io/play/#ts=4.8.3&sourceType=module&code=KYDwDg9gTgLgBASwHY2FAZgQwMbDgUREwFswAbYAHgBU4BeOANwgQBMA+OAbwFgAoOHGLAYACwisAFAEoAXHGoBufgF9+QA&eslintrc=N4KABGBEAOCGBOBnApvSAuKABALgT2mUQGN4BLaHAWiIBsyA7HAejiVUgBpwp4BXWkQxhQECJFwEipCtTqMWDAPZVGAN1j0AJlTVKyO-IWEBtSKnhK03MWOBRNtJQHcAkgwDiyBqjLEAKlIAgvAA5nwAtt44iMI4-MgAvjwQALo8yclAA&tsconfig=N4KAvkA

Repro Code

export interface Example<T = void> {
  method(): T;
}

ESLint Config

{
  "parser": "@typescript-eslint/parser",
  "rules": {
    "@typescript-eslint/no-invalid-void-type": ["error",
      { "allowInGenericTypeArguments": true}
    ]
  }
}

tsconfig

{}

Expected Result

I expected the example code to pass linting without warnings or errors.

Actual Result

On the first line we get the error void is only valid as a return type or generic type variable.

Additional Info

No response

Versions

package	version
TypeScript	4.8.3
ESLint	8.15.0

[JoshuaKGoldberg]

I think it makes sense that if allowInGenericTypeArguments is specified, we should allow the default for a generic type variable to be void too. 👍

[kazizi55]

I would like to work on this issue!