==== tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithObjectMembers4.ts (17 errors) ====
    // members N and M of types S and T have the same name, same accessibility, same optionality, and N is not assignable M
    
    module OnlyDerived {
        class Base { foo: string; }
        class Derived extends Base { bar: string; }
        class Derived2 extends Base { baz: string; }
    
        class S { foo: Derived; }
        class T { foo: Derived2; }
        var s: S;
        var t: T;
    
        interface S2 { foo: Derived; }
        interface T2 { foo: Derived2; }
        var s2: S2;
        var t2: T2;
    
        var a: { foo: Derived; }
        var b: { foo: Derived2; }
    
        var a2 = { foo: new Derived() };
        var b2 = { foo: new Derived2() };
    
        s = t; // error
        ~
!!! Type 'T' is not assignable to type 'S':
!!!   Types of property 'foo' are incompatible:
!!!     Type 'Derived2' is not assignable to type 'Derived':
!!!       Property 'bar' is missing in type 'Derived2'.
        t = s; // error
        ~
!!! Type 'S' is not assignable to type 'T':
!!!   Types of property 'foo' are incompatible:
!!!     Type 'Derived' is not assignable to type 'Derived2':
!!!       Property 'baz' is missing in type 'Derived'.
        s = s2; // ok
        s = a2; // ok
    
        s2 = t2; // error
        ~~
!!! Type 'T2' is not assignable to type 'S2':
!!!   Types of property 'foo' are incompatible:
!!!     Type 'Derived2' is not assignable to type 'Derived':
!!!       Property 'bar' is missing in type 'Derived2'.
        t2 = s2; // error
        ~~
!!! Type 'S2' is not assignable to type 'T2':
!!!   Types of property 'foo' are incompatible:
!!!     Type 'Derived' is not assignable to type 'Derived2':
!!!       Property 'baz' is missing in type 'Derived'.
        s2 = t; // error
        ~~
!!! Type 'T' is not assignable to type 'S2':
!!!   Types of property 'foo' are incompatible:
!!!     Type 'Derived2' is not assignable to type 'Derived':
!!!       Property 'bar' is missing in type 'Derived2'.
        s2 = b; // error
        ~~
!!! Type '{ foo: Derived2; }' is not assignable to type 'S2':
!!!   Types of property 'foo' are incompatible:
!!!     Type 'Derived2' is not assignable to type 'Derived':
!!!       Property 'bar' is missing in type 'Derived2'.
        s2 = a2; // ok
    
        a = b; // error
        ~
!!! Type '{ foo: Derived2; }' is not assignable to type '{ foo: Derived; }':
!!!   Types of property 'foo' are incompatible:
!!!     Type 'Derived2' is not assignable to type 'Derived':
!!!       Property 'bar' is missing in type 'Derived2'.
        b = a; // error
        ~
!!! Type '{ foo: Derived; }' is not assignable to type '{ foo: Derived2; }':
!!!   Types of property 'foo' are incompatible:
!!!     Type 'Derived' is not assignable to type 'Derived2':
!!!       Property 'baz' is missing in type 'Derived'.
        a = s; // ok
        a = s2; // ok
        a = a2; // ok
    
        a2 = b2; // error
        ~~
!!! Type '{ foo: Derived2; }' is not assignable to type '{ foo: Derived; }':
!!!   Types of property 'foo' are incompatible:
!!!     Type 'Derived2' is not assignable to type 'Derived':
!!!       Property 'bar' is missing in type 'Derived2'.
        b2 = a2; // error
        ~~
!!! Type '{ foo: Derived; }' is not assignable to type '{ foo: Derived2; }':
!!!   Types of property 'foo' are incompatible:
!!!     Type 'Derived' is not assignable to type 'Derived2':
!!!       Property 'baz' is missing in type 'Derived'.
        a2 = b; // error
        ~~
!!! Type '{ foo: Derived2; }' is not assignable to type '{ foo: Derived; }':
!!!   Types of property 'foo' are incompatible:
!!!     Type 'Derived2' is not assignable to type 'Derived':
!!!       Property 'bar' is missing in type 'Derived2'.
        a2 = t2; // error
        ~~
!!! Type 'T2' is not assignable to type '{ foo: Derived; }':
!!!   Types of property 'foo' are incompatible:
!!!     Type 'Derived2' is not assignable to type 'Derived':
!!!       Property 'bar' is missing in type 'Derived2'.
        a2 = t; // error
        ~~
!!! Type 'T' is not assignable to type '{ foo: Derived; }':
!!!   Types of property 'foo' are incompatible:
!!!     Type 'Derived2' is not assignable to type 'Derived':
!!!       Property 'bar' is missing in type 'Derived2'.
    }
    
    module WithBase {
        class Base { foo: string; }
        class Derived extends Base { bar: string; }
        class Derived2 extends Base { baz: string; }
    
        class S { foo: Base; }
        class T { foo: Derived2; }
        var s: S;
        var t: T;
    
        interface S2 { foo: Base; }
        interface T2 { foo: Derived2; }
        var s2: S2;
        var t2: T2;
    
        var a: { foo: Base; }
        var b: { foo: Derived2; }
    
        var a2 = { foo: new Base() };
        var b2 = { foo: new Derived2() };
    
        s = t; // ok
        t = s; // error
        ~
!!! Type 'S' is not assignable to type 'T':
!!!   Types of property 'foo' are incompatible:
!!!     Type 'Base' is not assignable to type 'Derived2':
!!!       Property 'baz' is missing in type 'Base'.
        s = s2; // ok
        s = a2; // ok
    
        s2 = t2; // ok
        t2 = s2; // error
        ~~
!!! Type 'S2' is not assignable to type 'T2':
!!!   Types of property 'foo' are incompatible:
!!!     Type 'Base' is not assignable to type 'Derived2':
!!!       Property 'baz' is missing in type 'Base'.
        s2 = t; // ok
        s2 = b; // ok
        s2 = a2; // ok
    
        a = b; // ok
        b = a; // error
        ~
!!! Type '{ foo: Base; }' is not assignable to type '{ foo: Derived2; }':
!!!   Types of property 'foo' are incompatible:
!!!     Type 'Base' is not assignable to type 'Derived2':
!!!       Property 'baz' is missing in type 'Base'.
        a = s; // ok
        a = s2; // ok
        a = a2; // ok
    
        a2 = b2; // ok
        b2 = a2; // error
        ~~
!!! Type '{ foo: Base; }' is not assignable to type '{ foo: Derived2; }':
!!!   Types of property 'foo' are incompatible:
!!!     Type 'Base' is not assignable to type 'Derived2':
!!!       Property 'baz' is missing in type 'Base'.
        a2 = b; // ok
        a2 = t2; // ok
        a2 = t; // ok
    }