This fixes the error:

error  Don't use `{}` as a type. `{}` actually means "any non-nullish value".
- If you want a type meaning "any object", you probably want `object` instead.
- If you want a type meaning "any value", you probably want `unknown` instead.
- If you want a type meaning "empty object", you probably want `Record<string, never>` instead.
- If you really want a type meaning "any non-nullish value", you probably want `NonNullable<unknown>` instead  @typescript-eslint/ban-types

This makes the return type correspond
to the boolean that the comment at
the interface suggests.

There is a single type signature
that does not pass this check in the current
code base, so update that signature and
enable the lint rule.

Remove constructors that just call
super() with their arguments and
enable @typescript-eslint/no-useless-constructor.