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=== tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithNumericIndexer2.ts ===
// Derived type indexer must be subtype of base type indexer
interface Base { foo: string; }
>foo : string
interface Derived extends Base { bar: string; }
>bar : string
interface Derived2 extends Derived { baz: string; }
>baz : string
interface A {
[x: number]: Derived;
>x : number
}
interface B extends A {
[x: number]: Base; // error
>x : number
}
interface B2 extends A {
[x: number]: Derived2; // ok
>x : number
}
module Generics {
interface A<T extends Derived> {
[x: number]: T;
>x : number
}
interface B extends A<Base> {
[x: number]: Derived; // error
>x : number
}
interface B2 extends A<Derived> {
[x: number]: Derived2; // ok
>x : number
}
interface B3<T extends Derived> extends A<T> {
[x: number]: Base; // error
>x : number
}
interface B4<T extends Derived> extends A<T> {
[x: number]: Derived; // error
>x : number
}
interface B5<T extends Derived2> extends A<T> {
[x: number]: Derived2; // error
>x : number
}
}
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