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//// [controlFlowInstanceofExtendsFunction.ts]
declare global {
interface Function {
now(): string;
}
}
Function.prototype.now = function () {
return "now"
}
class X {
static now() {
return {}
}
why() {
}
}
class Y {
}
console.log(X.now()) // works as expected
console.log(Y.now()) // works as expected
export const x: X | number = Math.random() > 0.5 ? new X() : 1
if (x instanceof X) {
x.why() // should compile
}
//// [controlFlowInstanceofExtendsFunction.js]
"use strict";
exports.__esModule = true;
Function.prototype.now = function () {
return "now";
};
var X = /** @class */ (function () {
function X() {
}
X.now = function () {
return {};
};
X.prototype.why = function () {
};
return X;
}());
var Y = /** @class */ (function () {
function Y() {
}
return Y;
}());
console.log(X.now()); // works as expected
console.log(Y.now()); // works as expected
exports.x = Math.random() > 0.5 ? new X() : 1;
if (exports.x instanceof X) {
exports.x.why(); // should compile
}
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