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