tests/cases/conformance/es6/computedProperties/computedPropertyNames40_ES5.ts(8,5): error TS2411: Property '[""]' of type '() => Foo' is not assignable to string index type '() => Foo2'.


==== tests/cases/conformance/es6/computedProperties/computedPropertyNames40_ES5.ts (1 errors) ====
    class Foo { x }
    class Foo2 { x; y }
    
    class C {
        [s: string]: () => Foo2;
    
        // Computed properties
        [""]() { return new Foo }
        ~~~~~~~~~~~~~~~~~~~~~~~~~
!!! error TS2411: Property '[""]' of type '() => Foo' is not assignable to string index type '() => Foo2'.
        [""]() { return new Foo2 }
    }