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//// [optionalMethods.ts]
interface Foo {
a: number;
b?: number;
f(): number;
g?(): number;
}
function test1(x: Foo) {
x.a;
x.b;
x.f;
x.g;
let f1 = x.f();
let g1 = x.g && x.g();
let g2 = x.g ? x.g() : 0;
}
class Bar {
a: number;
b?: number;
c? = 2;
constructor(public d?: number, public e = 10) {}
f() {
return 1;
}
g?(): number; // Body of optional method can be omitted
h?() {
return 2;
}
}
function test2(x: Bar) {
x.a;
x.b;
x.c;
x.d;
x.e;
x.f;
x.g;
let f1 = x.f();
let g1 = x.g && x.g();
let g2 = x.g ? x.g() : 0;
let h1 = x.h && x.h();
let h2 = x.h ? x.h() : 0;
}
class Base {
a?: number;
f?(): number;
}
class Derived extends Base {
a = 1;
f(): number { return 1; }
}
//// [optionalMethods.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 (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 __());
};
})();
function test1(x) {
x.a;
x.b;
x.f;
x.g;
var f1 = x.f();
var g1 = x.g && x.g();
var g2 = x.g ? x.g() : 0;
}
var Bar = /** @class */ (function () {
function Bar(d, e) {
if (e === void 0) { e = 10; }
this.d = d;
this.e = e;
this.c = 2;
}
Bar.prototype.f = function () {
return 1;
};
Bar.prototype.h = function () {
return 2;
};
return Bar;
}());
function test2(x) {
x.a;
x.b;
x.c;
x.d;
x.e;
x.f;
x.g;
var f1 = x.f();
var g1 = x.g && x.g();
var g2 = x.g ? x.g() : 0;
var h1 = x.h && x.h();
var h2 = x.h ? x.h() : 0;
}
var Base = /** @class */ (function () {
function Base() {
}
return Base;
}());
var Derived = /** @class */ (function (_super) {
__extends(Derived, _super);
function Derived() {
var _this = _super !== null && _super.apply(this, arguments) || this;
_this.a = 1;
return _this;
}
Derived.prototype.f = function () { return 1; };
return Derived;
}(Base));
//// [optionalMethods.d.ts]
interface Foo {
a: number;
b?: number;
f(): number;
g?(): number;
}
declare function test1(x: Foo): void;
declare class Bar {
d?: number | undefined;
e: number;
a: number;
b?: number;
c?: number | undefined;
constructor(d?: number | undefined, e?: number);
f(): number;
g?(): number;
h?(): number;
}
declare function test2(x: Bar): void;
declare class Base {
a?: number;
f?(): number;
}
declare class Derived extends Base {
a: number;
f(): number;
}
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