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=== tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithObjectMembersOptionality3.ts ===
// Base property is optional and derived type has no property of that name
interface Base { foo: string; }
>foo : string
interface Derived extends Base { bar: string; }
>bar : string
interface T {
Foo?: Base;
>Foo : Base
}
interface S extends T {
Foo2: Derived // ok
>Foo2 : Derived
}
interface T2 {
1?: Base;
>1 : Base
}
interface S2 extends T2 {
2: Derived; // ok
>2 : Derived
}
interface T3 {
'1'?: Base;
>'1' : Base
}
interface S3 extends T3 {
'1.0': Derived; // ok
>'1.0' : Derived
}
// object literal case
var a: { Foo?: Base; }
>a : { Foo?: Base; }
>Foo : Base
var b: { Foo2: Derived; }
>b : { Foo2: Derived; }
>Foo2 : Derived
var r = true ? a : b; // ok
>r : { Foo?: Base; } | { Foo2: Derived; }
>true ? a : b : { Foo?: Base; } | { Foo2: Derived; }
>true : true
>a : { Foo?: Base; }
>b : { Foo2: Derived; }
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