53 lines
1.6 KiB
TypeScript
53 lines
1.6 KiB
TypeScript
//// [classIsSubtypeOfBaseType.ts]
|
|
class Base<T> {
|
|
foo: T;
|
|
}
|
|
|
|
class Derived extends Base<{ bar: string; }> {
|
|
foo: {
|
|
bar: string; baz: number; // ok
|
|
}
|
|
}
|
|
|
|
class Derived2 extends Base<{ bar: string; }> {
|
|
foo: {
|
|
bar?: string; // error
|
|
}
|
|
}
|
|
|
|
//// [classIsSubtypeOfBaseType.js]
|
|
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 (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
|
|
return extendStatics(d, b);
|
|
};
|
|
return function (d, b) {
|
|
if (typeof b !== "function" && b !== null)
|
|
throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
|
|
extendStatics(d, b);
|
|
function __() { this.constructor = d; }
|
|
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
|
|
};
|
|
})();
|
|
var Base = /** @class */ (function () {
|
|
function Base() {
|
|
}
|
|
return Base;
|
|
}());
|
|
var Derived = /** @class */ (function (_super) {
|
|
__extends(Derived, _super);
|
|
function Derived() {
|
|
return _super !== null && _super.apply(this, arguments) || this;
|
|
}
|
|
return Derived;
|
|
}(Base));
|
|
var Derived2 = /** @class */ (function (_super) {
|
|
__extends(Derived2, _super);
|
|
function Derived2() {
|
|
return _super !== null && _super.apply(this, arguments) || this;
|
|
}
|
|
return Derived2;
|
|
}(Base));
|