//// [assignmentCompatWithStringIndexer.ts] // index signatures must be compatible in assignments interface Base { foo: string; } interface Derived extends Base { bar: string; } interface Derived2 extends Derived { baz: string; } class A { [x: string]: Base; } var a: A; var b: { [x: string]: Derived; } a = b; // ok b = a; // error var b2: { [x: string]: Derived2; } a = b2; // ok b2 = a; // error module Generics { class A { [x: string]: T; } class B extends A { [x: string]: Derived; // ok } var b1: { [x: string]: Derived; }; var a1: A; a1 = b1; // ok b1 = a1; // error class B2 extends A { [x: string]: Derived2; // ok } var b2: { [x: string]: Derived2; }; a1 = b2; // ok b2 = a1; // error function foo() { var b3: { [x: string]: Derived; }; var a3: A; a3 = b3; // error b3 = a3; // error var b4: { [x: string]: Derived2; }; a3 = b4; // error b4 = a3; // error } } //// [assignmentCompatWithStringIndexer.js] // index signatures must be compatible in assignments 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; // ok b = a; // error var b2; a = b2; // ok b2 = a; // error var Generics; (function (Generics) { var A = (function () { function A() { } return A; })(); var B = (function (_super) { __extends(B, _super); function B() { _super.apply(this, arguments); } return B; })(A); var b1; var a1; a1 = b1; // ok b1 = a1; // error var B2 = (function (_super) { __extends(B2, _super); function B2() { _super.apply(this, arguments); } return B2; })(A); var b2; a1 = b2; // ok b2 = a1; // error function foo() { var b3; var a3; a3 = b3; // error b3 = a3; // error var b4; a3 = b4; // error b4 = a3; // error } })(Generics || (Generics = {}));