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//// [assignmentCompatWithObjectMembersOptionality.ts]
// Derived member is not optional but base member is, should be ok
class Base { foo: string; }
class Derived extends Base { bar: string; }
class Derived2 extends Derived { baz: string; }
module TargetHasOptional {
// targets
interface C {
opt?: Base
}
var c: C;
var a: { opt?: Base; }
var b: typeof a = { opt: new Base() }
// sources
interface D {
opt: Base;
}
interface E {
opt: Derived;
}
interface F {
opt?: Derived;
}
var d: D;
var e: E;
var f: F;
// all ok
c = d;
c = e;
c = f;
c = a;
a = d;
a = e;
a = f;
a = c;
b = d;
b = e;
b = f;
b = a;
b = c;
}
module SourceHasOptional {
// targets
interface C {
opt: Base
}
var c: C;
var a: { opt: Base; }
var b = { opt: new Base() }
// sources
interface D {
opt?: Base;
}
interface E {
opt?: Derived;
}
interface F {
opt: Derived;
}
var d: D;
var e: E;
var f: F;
c = d; // error
c = e; // error
c = f; // ok
c = a; // ok
a = d; // error
a = e; // error
a = f; // ok
a = c; // ok
b = d; // error
b = e; // error
b = f; // ok
b = a; // ok
b = c; // ok
}
//// [assignmentCompatWithObjectMembersOptionality.js]
// Derived member is not optional but base member is, should be ok
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 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;
}(Derived));
var TargetHasOptional;
(function (TargetHasOptional) {
var c;
var a;
var b = { opt: new Base() };
var d;
var e;
var f;
// all ok
c = d;
c = e;
c = f;
c = a;
a = d;
a = e;
a = f;
a = c;
b = d;
b = e;
b = f;
b = a;
b = c;
})(TargetHasOptional || (TargetHasOptional = {}));
var SourceHasOptional;
(function (SourceHasOptional) {
var c;
var a;
var b = { opt: new Base() };
var d;
var e;
var f;
c = d; // error
c = e; // error
c = f; // ok
c = a; // ok
a = d; // error
a = e; // error
a = f; // ok
a = c; // ok
b = d; // error
b = e; // error
b = f; // ok
b = a; // ok
b = c; // ok
})(SourceHasOptional || (SourceHasOptional = {}));
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