=== tests/cases/compiler/overloadOnConstInheritance1.ts ===
interface Base {
>Base : Base

    addEventListener(x: string): any;
>addEventListener : { (x: string): any; (x: 'foo'): string; }
>x : string

    addEventListener(x: 'foo'): string;
>addEventListener : { (x: string): any; (x: 'foo'): string; }
>x : 'foo'
}
interface Deriver extends Base {
>Deriver : Deriver
>Base : Base

    addEventListener(x: string): any;
>addEventListener : { (x: string): any; (x: 'bar'): string; }
>x : string

    addEventListener(x: 'bar'): string;
>addEventListener : { (x: string): any; (x: 'bar'): string; }
>x : 'bar'
}