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// @strict: true
// Repro from #8383
class A {
prop!: { a: string; };
}
class B {
prop!: { b: string; }
}
function isA(x: any): x is A {
return x instanceof A;
}
function isB(x: any): x is B {
return x instanceof B;
}
function f1(x: A | B) {
while (true) {
if (x instanceof A) {
x.prop.a;
}
else if (x instanceof B) {
x.prop.b;
}
}
}
function f2(x: A | B) {
while (true) {
if (isA(x)) {
x.prop.a;
}
else if (isB(x)) {
x.prop.b;
}
}
}
// Repro from #28100
class Foo1
{
x: number; // Error
constructor() {
if (this instanceof Boolean) {
}
}
}
class Foo2
{
x: number; // Error
constructor() {
}
}
|
