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//// [assignmentCompatWithNumericIndexer.ts]
// Derived type indexer must be subtype of base type indexer
interface Base { foo: string; }
interface Derived extends Base { bar: string; }
interface Derived2 extends Derived { baz: string; }
class A {
[x: number]: Base;
}
var a: A;
var b: { [x: number]: Derived; }
a = b;
b = a; // error
var b2: { [x: number]: Derived2; }
a = b2;
b2 = a; // error
module Generics {
class A<T extends Base> {
[x: number]: T;
}
class B extends A<Base> {
[x: number]: Derived; // ok
}
function foo<T extends Base>() {
var a: A<T>;
var b: { [x: number]: Derived; }
a = b; // error
b = a; // error
var b2: { [x: number]: Derived2; }
a = b2; // error
b2 = a; // error
var b3: { [x: number]: T; }
a = b3; // ok
b3 = a; // ok
}
}
//// [assignmentCompatWithNumericIndexer.js]
// Derived type indexer must be subtype of base type indexer
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
var A = /** @class */ (function () {
function A() {
}
return A;
}());
var a;
var b;
a = b;
b = a; // error
var b2;
a = b2;
b2 = a; // error
var Generics;
(function (Generics) {
var A = /** @class */ (function () {
function A() {
}
return A;
}());
var B = /** @class */ (function (_super) {
__extends(B, _super);
function B() {
return _super !== null && _super.apply(this, arguments) || this;
}
return B;
}(A));
function foo() {
var a;
var b;
a = b; // error
b = a; // error
var b2;
a = b2; // error
b2 = a; // error
var b3;
a = b3; // ok
b3 = a; // ok
}
})(Generics || (Generics = {}));
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