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tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithStringIndexer3.ts(11,7): error TS2415: Class 'B' incorrectly extends base class 'A'.
'string' index signatures are incompatible.
Property 'bar' is missing in type 'Base' but required in type 'Derived'.
tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithStringIndexer3.ts(24,23): error TS2344: Type 'Base' does not satisfy the constraint 'Derived'.
tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithStringIndexer3.ts(32,11): error TS2415: Class 'B3<T>' incorrectly extends base class 'A<T>'.
'string' index signatures are incompatible.
Type 'Base' is not assignable to type 'T'.
'T' could be instantiated with an arbitrary type which could be unrelated to 'Base'.
tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithStringIndexer3.ts(36,11): error TS2415: Class 'B4<T>' incorrectly extends base class 'A<T>'.
'string' index signatures are incompatible.
Type 'Derived' is not assignable to type 'T'.
'Derived' is assignable to the constraint of type 'T', but 'T' could be instantiated with a different subtype of constraint 'Derived'.
tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithStringIndexer3.ts(40,11): error TS2415: Class 'B5<T>' incorrectly extends base class 'A<T>'.
'string' index signatures are incompatible.
Type 'Derived2' is not assignable to type 'T'.
'Derived2' is assignable to the constraint of type 'T', but 'T' could be instantiated with a different subtype of constraint 'Derived2'.
==== tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithStringIndexer3.ts (5 errors) ====
// Derived type indexer must be subtype of base type indexer
interface Base { foo: string; }
interface Derived extends Base { bar: string; }
interface Derived2 extends Derived { baz: string; }
class A {
[x: string]: Derived;
}
class B extends A {
~
!!! error TS2415: Class 'B' incorrectly extends base class 'A'.
!!! error TS2415: 'string' index signatures are incompatible.
!!! error TS2415: Property 'bar' is missing in type 'Base' but required in type 'Derived'.
!!! related TS2728 tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithStringIndexer3.ts:4:34: 'bar' is declared here.
[x: string]: Base; // error
}
class B2 extends A {
[x: string]: Derived2; // ok
}
module Generics {
class A<T extends Derived> {
[x: string]: T;
}
class B extends A<Base> {
~~~~
!!! error TS2344: Type 'Base' does not satisfy the constraint 'Derived'.
[x: string]: Derived; // error
}
class B2 extends A<Derived> {
[x: string]: Derived2; // ok
}
class B3<T extends Derived> extends A<T> {
~~
!!! error TS2415: Class 'B3<T>' incorrectly extends base class 'A<T>'.
!!! error TS2415: 'string' index signatures are incompatible.
!!! error TS2415: Type 'Base' is not assignable to type 'T'.
!!! error TS2415: 'T' could be instantiated with an arbitrary type which could be unrelated to 'Base'.
[x: string]: Base; // error
}
class B4<T extends Derived> extends A<T> {
~~
!!! error TS2415: Class 'B4<T>' incorrectly extends base class 'A<T>'.
!!! error TS2415: 'string' index signatures are incompatible.
!!! error TS2415: Type 'Derived' is not assignable to type 'T'.
!!! error TS2415: 'Derived' is assignable to the constraint of type 'T', but 'T' could be instantiated with a different subtype of constraint 'Derived'.
[x: string]: Derived; // error
}
class B5<T extends Derived2> extends A<T> {
~~
!!! error TS2415: Class 'B5<T>' incorrectly extends base class 'A<T>'.
!!! error TS2415: 'string' index signatures are incompatible.
!!! error TS2415: Type 'Derived2' is not assignable to type 'T'.
!!! error TS2415: 'Derived2' is assignable to the constraint of type 'T', but 'T' could be instantiated with a different subtype of constraint 'Derived2'.
[x: string]: Derived2; // error
}
}
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