Repro

{"rules": {"@typescript-eslint/no-unnecessary-type-arguments": ["error"]  }}

classFooEventextendsCustomEvent<any>{}

Expected Result

to pass linting.

Actual Result

Fails linting, because the typeCustomEvent<T> has a default typeany for the genericT, and thus it wants justCustomEvent.

The problem is thatCustomEvent is defined as a global variable, thus the meaning ofextends CustomEvent is different thanextends CustomEvent<any>.

Additional Info

Versions