//// [numericIndexerConstrainsPropertyDeclarations2.ts] // String indexer providing a constraint of a user defined type class A { foo(): string { return ''; } } class B extends A { bar(): string { return ''; } } class Foo { [x: number]: A; 1.0: A; // ok 2.0: B; // ok "2.5": B // ok 3.0: number; // error "4.0": string; // error } interface Foo2 { [x: number]: A; 1.0: A; // ok 2.0: B; // ok "2.5": B // ok 3.0: number; // error "4.0": string; // error } var a: { [x: number]: A; 1.0: A; // ok 2.0: B; // ok "2.5": B // ok 3.0: number; // error "4.0": string; // error }; // error var b: { [x: number]: A } = { 1.0: new A(), 2.0: new B(), "2.5": new B(), 3.0: 1, "4.0": '' } //// [numericIndexerConstrainsPropertyDeclarations2.js] var __extends = 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() { } A.prototype.foo = function () { return ''; }; return A; })(); var B = (function (_super) { __extends(B, _super); function B() { _super.apply(this, arguments); } B.prototype.bar = function () { return ''; }; return B; })(A); var Foo = (function () { function Foo() { } return Foo; })(); var a; var b = { 1.0: new A(), 2.0: new B(), "2.5": new B(), 3.0: 1, "4.0": '' };