TypeScript/tests/baselines/reference/subtypingWithObjectMembersOptionality.types

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=== tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithObjectMembersOptionality.ts ===
// Derived member is not optional but base member is, should be ok
interface Base { foo: string; }
>Base : Base, Symbol(Base,Decl(subtypingWithObjectMembersOptionality.ts,0,0))
>foo : string, Symbol(foo,Decl(subtypingWithObjectMembersOptionality.ts,2,16))
interface Derived extends Base { bar: string; }
>Derived : Derived, Symbol(Derived,Decl(subtypingWithObjectMembersOptionality.ts,2,31))
>Base : Base, Symbol(Base,Decl(subtypingWithObjectMembersOptionality.ts,0,0))
>bar : string, Symbol(bar,Decl(subtypingWithObjectMembersOptionality.ts,3,32))
interface Derived2 extends Derived { baz: string; }
>Derived2 : Derived2, Symbol(Derived2,Decl(subtypingWithObjectMembersOptionality.ts,3,47))
>Derived : Derived, Symbol(Derived,Decl(subtypingWithObjectMembersOptionality.ts,2,31))
>baz : string, Symbol(baz,Decl(subtypingWithObjectMembersOptionality.ts,4,36))
// S is a subtype of a type T, and T is a supertype of S, if one of the following is true, where S' denotes the apparent type (section 3.8.1) of S:
// - S' and T are object types and, for each member M in T, one of the following is true:
// - M is a property and S' contains a property N where
// M and N have the same name,
// the type of N is a subtype of that of M,
// M and N are both public or both private, and
// if M is a required property, N is also a required property.
// - M is an optional property and S' contains no property of the same name as M.
interface T {
>T : T, Symbol(T,Decl(subtypingWithObjectMembersOptionality.ts,4,51))
Foo?: Base;
>Foo : Base, Symbol(Foo,Decl(subtypingWithObjectMembersOptionality.ts,14,13))
>Base : Base, Symbol(Base,Decl(subtypingWithObjectMembersOptionality.ts,0,0))
}
interface S extends T {
>S : S, Symbol(S,Decl(subtypingWithObjectMembersOptionality.ts,16,1))
>T : T, Symbol(T,Decl(subtypingWithObjectMembersOptionality.ts,4,51))
Foo: Derived
>Foo : Derived, Symbol(Foo,Decl(subtypingWithObjectMembersOptionality.ts,18,23))
>Derived : Derived, Symbol(Derived,Decl(subtypingWithObjectMembersOptionality.ts,2,31))
}
interface T2 {
>T2 : T2, Symbol(T2,Decl(subtypingWithObjectMembersOptionality.ts,20,1))
1?: Base;
>Base : Base, Symbol(Base,Decl(subtypingWithObjectMembersOptionality.ts,0,0))
}
interface S2 extends T2 {
>S2 : S2, Symbol(S2,Decl(subtypingWithObjectMembersOptionality.ts,24,1))
>T2 : T2, Symbol(T2,Decl(subtypingWithObjectMembersOptionality.ts,20,1))
1: Derived;
>Derived : Derived, Symbol(Derived,Decl(subtypingWithObjectMembersOptionality.ts,2,31))
}
interface T3 {
>T3 : T3, Symbol(T3,Decl(subtypingWithObjectMembersOptionality.ts,28,1))
'1'?: Base;
>Base : Base, Symbol(Base,Decl(subtypingWithObjectMembersOptionality.ts,0,0))
}
interface S3 extends T3 {
>S3 : S3, Symbol(S3,Decl(subtypingWithObjectMembersOptionality.ts,32,1))
>T3 : T3, Symbol(T3,Decl(subtypingWithObjectMembersOptionality.ts,28,1))
'1.': Derived;
>Derived : Derived, Symbol(Derived,Decl(subtypingWithObjectMembersOptionality.ts,2,31))
}
// object literal case
var a: { Foo?: Base; };
>a : { Foo?: Base; }, Symbol(a,Decl(subtypingWithObjectMembersOptionality.ts,39,3))
>Foo : Base, Symbol(Foo,Decl(subtypingWithObjectMembersOptionality.ts,39,8))
>Base : Base, Symbol(Base,Decl(subtypingWithObjectMembersOptionality.ts,0,0))
var b = { Foo: <Derived>null };
>b : { Foo: Derived; }, Symbol(b,Decl(subtypingWithObjectMembersOptionality.ts,40,3))
>{ Foo: <Derived>null } : { Foo: Derived; }
>Foo : Derived, Symbol(Foo,Decl(subtypingWithObjectMembersOptionality.ts,40,9))
><Derived>null : Derived
>Derived : Derived, Symbol(Derived,Decl(subtypingWithObjectMembersOptionality.ts,2,31))
>null : null
var r = true ? a : b;
>r : { Foo?: Base; }, Symbol(r,Decl(subtypingWithObjectMembersOptionality.ts,41,3))
>true ? a : b : { Foo?: Base; }
>true : boolean
>a : { Foo?: Base; }, Symbol(a,Decl(subtypingWithObjectMembersOptionality.ts,39,3))
>b : { Foo: Derived; }, Symbol(b,Decl(subtypingWithObjectMembersOptionality.ts,40,3))
module TwoLevels {
>TwoLevels : typeof TwoLevels, Symbol(TwoLevels,Decl(subtypingWithObjectMembersOptionality.ts,41,21))
interface T {
>T : T, Symbol(T,Decl(subtypingWithObjectMembersOptionality.ts,43,18))
Foo?: Base;
>Foo : Base, Symbol(Foo,Decl(subtypingWithObjectMembersOptionality.ts,44,17))
>Base : Base, Symbol(Base,Decl(subtypingWithObjectMembersOptionality.ts,0,0))
}
interface S extends T {
>S : S, Symbol(S,Decl(subtypingWithObjectMembersOptionality.ts,46,5))
>T : T, Symbol(T,Decl(subtypingWithObjectMembersOptionality.ts,43,18))
Foo: Derived2
>Foo : Derived2, Symbol(Foo,Decl(subtypingWithObjectMembersOptionality.ts,48,27))
>Derived2 : Derived2, Symbol(Derived2,Decl(subtypingWithObjectMembersOptionality.ts,3,47))
}
interface T2 {
>T2 : T2, Symbol(T2,Decl(subtypingWithObjectMembersOptionality.ts,50,5))
1?: Base;
>Base : Base, Symbol(Base,Decl(subtypingWithObjectMembersOptionality.ts,0,0))
}
interface S2 extends T2 {
>S2 : S2, Symbol(S2,Decl(subtypingWithObjectMembersOptionality.ts,54,5))
>T2 : T2, Symbol(T2,Decl(subtypingWithObjectMembersOptionality.ts,50,5))
1: Derived2;
>Derived2 : Derived2, Symbol(Derived2,Decl(subtypingWithObjectMembersOptionality.ts,3,47))
}
interface T3 {
>T3 : T3, Symbol(T3,Decl(subtypingWithObjectMembersOptionality.ts,58,5))
'1'?: Base;
>Base : Base, Symbol(Base,Decl(subtypingWithObjectMembersOptionality.ts,0,0))
}
interface S3 extends T3 {
>S3 : S3, Symbol(S3,Decl(subtypingWithObjectMembersOptionality.ts,62,5))
>T3 : T3, Symbol(T3,Decl(subtypingWithObjectMembersOptionality.ts,58,5))
'1.': Derived2;
>Derived2 : Derived2, Symbol(Derived2,Decl(subtypingWithObjectMembersOptionality.ts,3,47))
}
// object literal case
var a: { Foo?: Base; };
>a : { Foo?: Base; }, Symbol(a,Decl(subtypingWithObjectMembersOptionality.ts,69,7))
>Foo : Base, Symbol(Foo,Decl(subtypingWithObjectMembersOptionality.ts,69,12))
>Base : Base, Symbol(Base,Decl(subtypingWithObjectMembersOptionality.ts,0,0))
var b = { Foo: <Derived2>null };
>b : { Foo: Derived2; }, Symbol(b,Decl(subtypingWithObjectMembersOptionality.ts,70,7))
>{ Foo: <Derived2>null } : { Foo: Derived2; }
>Foo : Derived2, Symbol(Foo,Decl(subtypingWithObjectMembersOptionality.ts,70,13))
><Derived2>null : Derived2
>Derived2 : Derived2, Symbol(Derived2,Decl(subtypingWithObjectMembersOptionality.ts,3,47))
>null : null
var r = true ? a : b;
>r : { Foo?: Base; }, Symbol(r,Decl(subtypingWithObjectMembersOptionality.ts,71,7))
>true ? a : b : { Foo?: Base; }
>true : boolean
>a : { Foo?: Base; }, Symbol(a,Decl(subtypingWithObjectMembersOptionality.ts,69,7))
>b : { Foo: Derived2; }, Symbol(b,Decl(subtypingWithObjectMembersOptionality.ts,70,7))
}