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//// [assignmentCompatWithNumericIndexer2.ts]
// 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; }
interface A {
[x: number]: Base;
}
var a: A;
var b: { [x: number]: Derived; }
a = b;
b = a; // error
var b2: { [x: number]: Derived2; }
a = b2;
b2 = a; // error
module Generics {
interface A<T extends Base> {
[x: number]: T;
}
interface 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
b = a; // error
var b2: { [x: number]: Derived2; }
a = b2; // error
b2 = a; // error
var b3: { [x: number]: T; }
a = b3; // ok
b3 = a; // ok
}
}
//// [assignmentCompatWithNumericIndexer2.js]
// Derived type indexer must be subtype of base type indexer
var a;
var b;
a = b;
b = a; // error
var b2;
a = b2;
b2 = a; // error
var Generics;
(function (Generics) {
function foo() {
var a;
var b;
a = b; // error
b = a; // error
var b2;
a = b2; // error
b2 = a; // error
var b3;
a = b3; // ok
b3 = a; // ok
}
})(Generics || (Generics = {}));
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