102 lines
2.5 KiB
TypeScript
102 lines
2.5 KiB
TypeScript
//// [assignmentCompatWithNumericIndexer.ts]
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// Derived type indexer must be subtype of base type indexer
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interface Base { foo: string; }
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interface Derived extends Base { bar: string; }
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interface Derived2 extends Derived { baz: string; }
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class A {
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[x: number]: Base;
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}
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var a: A;
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var b: { [x: number]: Derived; }
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a = b;
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b = a; // error
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var b2: { [x: number]: Derived2; }
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a = b2;
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b2 = a; // error
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module Generics {
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class A<T extends Base> {
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[x: number]: T;
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}
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class B extends A<Base> {
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[x: number]: Derived; // ok
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}
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function foo<T extends Base>() {
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var a: A<T>;
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var b: { [x: number]: Derived; }
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a = b; // error
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b = a; // error
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var b2: { [x: number]: Derived2; }
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a = b2; // error
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b2 = a; // error
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var b3: { [x: number]: T; }
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a = b3; // ok
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b3 = a; // ok
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}
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}
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//// [assignmentCompatWithNumericIndexer.js]
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// Derived type indexer must be subtype of base type indexer
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var __extends = (this && this.__extends) || (function () {
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var extendStatics = function (d, b) {
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extendStatics = Object.setPrototypeOf ||
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({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
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return extendStatics(d, b);
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};
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return function (d, b) {
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if (typeof b !== "function" && b !== null)
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throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
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extendStatics(d, b);
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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})();
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var A = /** @class */ (function () {
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function A() {
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}
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return A;
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}());
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var a;
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var b;
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a = b;
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b = a; // error
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var b2;
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a = b2;
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b2 = a; // error
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var Generics;
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(function (Generics) {
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var A = /** @class */ (function () {
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function A() {
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}
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return A;
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}());
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var B = /** @class */ (function (_super) {
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__extends(B, _super);
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function B() {
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return _super !== null && _super.apply(this, arguments) || this;
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}
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return B;
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}(A));
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function foo() {
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var a;
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var b;
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a = b; // error
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b = a; // error
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var b2;
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a = b2; // error
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b2 = a; // error
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var b3;
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a = b3; // ok
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b3 = a; // ok
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}
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})(Generics || (Generics = {}));
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