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//// [bestCommonTypeOfConditionalExpressions2.ts]
// conditional expressions return the best common type of the branches plus contextual type (using the first candidate if multiple BCTs exist)
// these are errors
class Base { foo: string; }
class Derived extends Base { bar: string; }
class Derived2 extends Base { baz: string; }
var base: Base;
var derived: Derived;
var derived2: Derived2;
var r2 = true ? 1 : '';
var r9 = true ? derived : derived2;
function foo<T, U>(t: T, u: U) {
return true ? t : u;
}
function foo2<T extends U, U>(t: T, u: U) { // Error for referencing own type parameter
return true ? t : u; // Ok because BCT(T, U) = U
}
function foo3<T extends U, U extends V, V>(t: T, u: U) {
return true ? t : u;
}
//// [bestCommonTypeOfConditionalExpressions2.js]
// conditional expressions return the best common type of the branches plus contextual type (using the first candidate if multiple BCTs exist)
// these are errors
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;
}(Base));
var base;
var derived;
var derived2;
var r2 = true ? 1 : '';
var r9 = true ? derived : derived2;
function foo(t, u) {
return true ? t : u;
}
function foo2(t, u) {
return true ? t : u; // Ok because BCT(T, U) = U
}
function foo3(t, u) {
return true ? t : u;
}
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