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tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithNumericIndexer.ts(14,1): error TS2322: Type 'A' is not assignable to type '{ [x: number]: Derived; }'.
Index signatures are incompatible.
Property 'bar' is missing in type 'Base' but required in type 'Derived'.
tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithNumericIndexer.ts(18,1): error TS2322: Type 'A' is not assignable to type '{ [x: number]: Derived2; }'.
Index signatures are incompatible.
Type 'Base' is missing the following properties from type 'Derived2': baz, bar
tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithNumericIndexer.ts(32,9): error TS2322: Type '{ [x: number]: Derived; }' is not assignable to type 'A<T>'.
Index signatures are incompatible.
Type 'Derived' is not assignable to type 'T'.
tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithNumericIndexer.ts(33,9): error TS2322: Type 'A<T>' is not assignable to type '{ [x: number]: Derived; }'.
Index signatures are incompatible.
Type 'T' is not assignable to type 'Derived'.
Type 'Base' is not assignable to type 'Derived'.
tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithNumericIndexer.ts(36,9): error TS2322: Type '{ [x: number]: Derived2; }' is not assignable to type 'A<T>'.
Index signatures are incompatible.
Type 'Derived2' is not assignable to type 'T'.
tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithNumericIndexer.ts(37,9): error TS2322: Type 'A<T>' is not assignable to type '{ [x: number]: Derived2; }'.
Index signatures are incompatible.
Type 'T' is not assignable to type 'Derived2'.
Type 'Base' is not assignable to type 'Derived2'.
==== tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithNumericIndexer.ts (6 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: number]: Base;
}
var a: A;
var b: { [x: number]: Derived; }
a = b;
b = a; // error
~
!!! error TS2322: Type 'A' is not assignable to type '{ [x: number]: Derived; }'.
!!! error TS2322: Index signatures are incompatible.
!!! error TS2322: Property 'bar' is missing in type 'Base' but required in type 'Derived'.
!!! related TS2728 tests/cases/conformance/types/typeRelationships/assignmentCompatibility/assignmentCompatWithNumericIndexer.ts:4:34: 'bar' is declared here.
var b2: { [x: number]: Derived2; }
a = b2;
b2 = a; // error
~~
!!! error TS2322: Type 'A' is not assignable to type '{ [x: number]: Derived2; }'.
!!! error TS2322: Index signatures are incompatible.
!!! error TS2322: Type 'Base' is missing the following properties from type 'Derived2': baz, bar
module Generics {
class A<T extends Base> {
[x: number]: T;
}
class B extends A<Base> {
[x: number]: Derived; // ok
}
function foo<T extends Base>() {
var a: A<T>;
var b: { [x: number]: Derived; }
a = b; // error
~
!!! error TS2322: Type '{ [x: number]: Derived; }' is not assignable to type 'A<T>'.
!!! error TS2322: Index signatures are incompatible.
!!! error TS2322: Type 'Derived' is not assignable to type 'T'.
b = a; // error
~
!!! error TS2322: Type 'A<T>' is not assignable to type '{ [x: number]: Derived; }'.
!!! error TS2322: Index signatures are incompatible.
!!! error TS2322: Type 'T' is not assignable to type 'Derived'.
!!! error TS2322: Type 'Base' is not assignable to type 'Derived'.
var b2: { [x: number]: Derived2; }
a = b2; // error
~
!!! error TS2322: Type '{ [x: number]: Derived2; }' is not assignable to type 'A<T>'.
!!! error TS2322: Index signatures are incompatible.
!!! error TS2322: Type 'Derived2' is not assignable to type 'T'.
b2 = a; // error
~~
!!! error TS2322: Type 'A<T>' is not assignable to type '{ [x: number]: Derived2; }'.
!!! error TS2322: Index signatures are incompatible.
!!! error TS2322: Type 'T' is not assignable to type 'Derived2'.
!!! error TS2322: Type 'Base' is not assignable to type 'Derived2'.
var b3: { [x: number]: T; }
a = b3; // ok
b3 = a; // ok
}
}
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