//// [assignmentCompatWithNumericIndexer3.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; } class A { [x: number]: Derived; } var a: A; var b: { [x: number]: Base; }; a = b; // error b = a; // ok class B2 extends A { [x: number]: Derived2; // ok } var b2: { [x: number]: Derived2; }; a = b2; // ok b2 = a; // error module Generics { class A { [x: number]: T; } function foo() { var a: A; var b: { [x: number]: Derived; }; a = b; // error b = a; // ok var b2: { [x: number]: T; }; a = b2; // ok b2 = a; // ok } } //// [assignmentCompatWithNumericIndexer3.js] // Derived type indexer must be subtype of base type indexer var __extends = (this && this.__extends) || function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; function __() { this.constructor = d; } __.prototype = b.prototype; d.prototype = new __(); }; var A = (function () { function A() { } return A; })(); var a; var b; a = b; // error b = a; // ok var B2 = (function (_super) { __extends(B2, _super); function B2() { _super.apply(this, arguments); } return B2; })(A); var b2; a = b2; // ok b2 = a; // error var Generics; (function (Generics) { var A = (function () { function A() { } return A; })(); function foo() { var a; var b; a = b; // error b = a; // ok var b2; a = b2; // ok b2 = a; // ok } })(Generics || (Generics = {}));