68 lines
1.9 KiB
TypeScript
68 lines
1.9 KiB
TypeScript
//// [baseIndexSignatureResolution.ts]
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class Base { private a: string; }
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class Derived extends Base { private b: string; }
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// Note - commmenting "extends Foo" prevents the error
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interface Foo {
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[i: number]: Base;
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}
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interface FooOf<TBase extends Base> extends Foo {
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[i: number]: TBase;
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}
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var x: FooOf<Derived> = null;
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var y: Derived = x[0];
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/*
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// Note - the equivalent for normal interface methods works fine:
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interface A {
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foo(): Base;
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}
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interface B<TBase extends Base> extends A {
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foo(): TBase;
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}
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var b: B<Derived> = null;
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var z: Derived = b.foo();
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*/
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//// [baseIndexSignatureResolution.js]
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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 Base = /** @class */ (function () {
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function Base() {
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}
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return Base;
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}());
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var Derived = /** @class */ (function (_super) {
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__extends(Derived, _super);
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function Derived() {
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return _super !== null && _super.apply(this, arguments) || this;
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}
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return Derived;
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}(Base));
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var x = null;
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var y = x[0];
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/*
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// Note - the equivalent for normal interface methods works fine:
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interface A {
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foo(): Base;
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}
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interface B<TBase extends Base> extends A {
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foo(): TBase;
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}
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var b: B<Derived> = null;
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var z: Derived = b.foo();
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*/
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