//// [typeGuardOfFormInstanceOf.ts]
// A type guard of the form x instanceof C, where C is of a subtype of the global type 'Function' 
// and C has a property named 'prototype'
//  - when true, narrows the type of x to the type of the 'prototype' property in C provided 
//    it is a subtype of the type of x, or
//  - when false, has no effect on the type of x.

class C1 {
    p1: string;
}
class C2 {
    p2: number;
}
class D1 extends C1 {
    p3: number;
}
var str: string;
var num: number;
var strOrNum: string | number;

var c1Orc2: C1 | C2;
str = c1Orc2 instanceof C1 && c1Orc2.p1; // C1
num = c1Orc2 instanceof C2 && c1Orc2.p2; // C2
str = c1Orc2 instanceof D1 && c1Orc2.p1; // D1
num = c1Orc2 instanceof D1 && c1Orc2.p3; // D1

var c2Ord1: C2 | D1;
num = c2Ord1 instanceof C2 && c2Ord1.p2; // C2
num = c2Ord1 instanceof D1 && c2Ord1.p3; // D1
str = c2Ord1 instanceof D1 && c2Ord1.p1; // D1
var r2: D1 | C2 = c2Ord1 instanceof C1 && c2Ord1; // C2 | D1

//// [typeGuardOfFormInstanceOf.js]
// A type guard of the form x instanceof C, where C is of a subtype of the global type 'Function' 
// and C has a property named 'prototype'
//  - when true, narrows the type of x to the type of the 'prototype' property in C provided 
//    it is a subtype of the type of x, or
//  - when false, has no effect on the type of x.
var __extends = this.__extends || function (d, b) {
    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
    function __() { this.constructor = d; }
    __.prototype = b.prototype;
    d.prototype = new __();
};
var C1 = (function () {
    function C1() {
    }
    return C1;
})();
var C2 = (function () {
    function C2() {
    }
    return C2;
})();
var D1 = (function (_super) {
    __extends(D1, _super);
    function D1() {
        _super.apply(this, arguments);
    }
    return D1;
})(C1);
var str;
var num;
var strOrNum;
var c1Orc2;
str = c1Orc2 instanceof C1 && c1Orc2.p1; // C1
num = c1Orc2 instanceof C2 && c1Orc2.p2; // C2
str = c1Orc2 instanceof D1 && c1Orc2.p1; // D1
num = c1Orc2 instanceof D1 && c1Orc2.p3; // D1
var c2Ord1;
num = c2Ord1 instanceof C2 && c2Ord1.p2; // C2
num = c2Ord1 instanceof D1 && c2Ord1.p3; // D1
str = c2Ord1 instanceof D1 && c2Ord1.p1; // D1
var r2 = c2Ord1 instanceof C1 && c2Ord1; // C2 | D1