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=== tests/cases/compiler/instanceofWithStructurallyIdenticalTypes.ts ===
// Repro from #7271
class C1 { item: string }
>C1 : Symbol(C1, Decl(instanceofWithStructurallyIdenticalTypes.ts, 0, 0))
>item : Symbol(C1.item, Decl(instanceofWithStructurallyIdenticalTypes.ts, 2, 10))
class C2 { item: string[] }
>C2 : Symbol(C2, Decl(instanceofWithStructurallyIdenticalTypes.ts, 2, 25))
>item : Symbol(C2.item, Decl(instanceofWithStructurallyIdenticalTypes.ts, 3, 10))
class C3 { item: string }
>C3 : Symbol(C3, Decl(instanceofWithStructurallyIdenticalTypes.ts, 3, 27))
>item : Symbol(C3.item, Decl(instanceofWithStructurallyIdenticalTypes.ts, 4, 10))
function foo1(x: C1 | C2 | C3): string {
>foo1 : Symbol(foo1, Decl(instanceofWithStructurallyIdenticalTypes.ts, 4, 25))
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 6, 14))
>C1 : Symbol(C1, Decl(instanceofWithStructurallyIdenticalTypes.ts, 0, 0))
>C2 : Symbol(C2, Decl(instanceofWithStructurallyIdenticalTypes.ts, 2, 25))
>C3 : Symbol(C3, Decl(instanceofWithStructurallyIdenticalTypes.ts, 3, 27))
if (x instanceof C1) {
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 6, 14))
>C1 : Symbol(C1, Decl(instanceofWithStructurallyIdenticalTypes.ts, 0, 0))
return x.item;
>x.item : Symbol(C1.item, Decl(instanceofWithStructurallyIdenticalTypes.ts, 2, 10))
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 6, 14))
>item : Symbol(C1.item, Decl(instanceofWithStructurallyIdenticalTypes.ts, 2, 10))
}
else if (x instanceof C2) {
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 6, 14))
>C2 : Symbol(C2, Decl(instanceofWithStructurallyIdenticalTypes.ts, 2, 25))
return x.item[0];
>x.item : Symbol(C2.item, Decl(instanceofWithStructurallyIdenticalTypes.ts, 3, 10))
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 6, 14))
>item : Symbol(C2.item, Decl(instanceofWithStructurallyIdenticalTypes.ts, 3, 10))
}
else if (x instanceof C3) {
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 6, 14))
>C3 : Symbol(C3, Decl(instanceofWithStructurallyIdenticalTypes.ts, 3, 27))
return x.item;
>x.item : Symbol(C3.item, Decl(instanceofWithStructurallyIdenticalTypes.ts, 4, 10))
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 6, 14))
>item : Symbol(C3.item, Decl(instanceofWithStructurallyIdenticalTypes.ts, 4, 10))
}
return "error";
}
function isC1(c: C1 | C2 | C3): c is C1 { return c instanceof C1 }
>isC1 : Symbol(isC1, Decl(instanceofWithStructurallyIdenticalTypes.ts, 17, 1))
>c : Symbol(c, Decl(instanceofWithStructurallyIdenticalTypes.ts, 19, 14))
>C1 : Symbol(C1, Decl(instanceofWithStructurallyIdenticalTypes.ts, 0, 0))
>C2 : Symbol(C2, Decl(instanceofWithStructurallyIdenticalTypes.ts, 2, 25))
>C3 : Symbol(C3, Decl(instanceofWithStructurallyIdenticalTypes.ts, 3, 27))
>c : Symbol(c, Decl(instanceofWithStructurallyIdenticalTypes.ts, 19, 14))
>C1 : Symbol(C1, Decl(instanceofWithStructurallyIdenticalTypes.ts, 0, 0))
>c : Symbol(c, Decl(instanceofWithStructurallyIdenticalTypes.ts, 19, 14))
>C1 : Symbol(C1, Decl(instanceofWithStructurallyIdenticalTypes.ts, 0, 0))
function isC2(c: C1 | C2 | C3): c is C2 { return c instanceof C2 }
>isC2 : Symbol(isC2, Decl(instanceofWithStructurallyIdenticalTypes.ts, 19, 66))
>c : Symbol(c, Decl(instanceofWithStructurallyIdenticalTypes.ts, 20, 14))
>C1 : Symbol(C1, Decl(instanceofWithStructurallyIdenticalTypes.ts, 0, 0))
>C2 : Symbol(C2, Decl(instanceofWithStructurallyIdenticalTypes.ts, 2, 25))
>C3 : Symbol(C3, Decl(instanceofWithStructurallyIdenticalTypes.ts, 3, 27))
>c : Symbol(c, Decl(instanceofWithStructurallyIdenticalTypes.ts, 20, 14))
>C2 : Symbol(C2, Decl(instanceofWithStructurallyIdenticalTypes.ts, 2, 25))
>c : Symbol(c, Decl(instanceofWithStructurallyIdenticalTypes.ts, 20, 14))
>C2 : Symbol(C2, Decl(instanceofWithStructurallyIdenticalTypes.ts, 2, 25))
function isC3(c: C1 | C2 | C3): c is C3 { return c instanceof C3 }
>isC3 : Symbol(isC3, Decl(instanceofWithStructurallyIdenticalTypes.ts, 20, 66))
>c : Symbol(c, Decl(instanceofWithStructurallyIdenticalTypes.ts, 21, 14))
>C1 : Symbol(C1, Decl(instanceofWithStructurallyIdenticalTypes.ts, 0, 0))
>C2 : Symbol(C2, Decl(instanceofWithStructurallyIdenticalTypes.ts, 2, 25))
>C3 : Symbol(C3, Decl(instanceofWithStructurallyIdenticalTypes.ts, 3, 27))
>c : Symbol(c, Decl(instanceofWithStructurallyIdenticalTypes.ts, 21, 14))
>C3 : Symbol(C3, Decl(instanceofWithStructurallyIdenticalTypes.ts, 3, 27))
>c : Symbol(c, Decl(instanceofWithStructurallyIdenticalTypes.ts, 21, 14))
>C3 : Symbol(C3, Decl(instanceofWithStructurallyIdenticalTypes.ts, 3, 27))
function foo2(x: C1 | C2 | C3): string {
>foo2 : Symbol(foo2, Decl(instanceofWithStructurallyIdenticalTypes.ts, 21, 66))
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 23, 14))
>C1 : Symbol(C1, Decl(instanceofWithStructurallyIdenticalTypes.ts, 0, 0))
>C2 : Symbol(C2, Decl(instanceofWithStructurallyIdenticalTypes.ts, 2, 25))
>C3 : Symbol(C3, Decl(instanceofWithStructurallyIdenticalTypes.ts, 3, 27))
if (isC1(x)) {
>isC1 : Symbol(isC1, Decl(instanceofWithStructurallyIdenticalTypes.ts, 17, 1))
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 23, 14))
return x.item;
>x.item : Symbol(C1.item, Decl(instanceofWithStructurallyIdenticalTypes.ts, 2, 10))
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 23, 14))
>item : Symbol(C1.item, Decl(instanceofWithStructurallyIdenticalTypes.ts, 2, 10))
}
else if (isC2(x)) {
>isC2 : Symbol(isC2, Decl(instanceofWithStructurallyIdenticalTypes.ts, 19, 66))
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 23, 14))
return x.item[0];
>x.item : Symbol(C2.item, Decl(instanceofWithStructurallyIdenticalTypes.ts, 3, 10))
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 23, 14))
>item : Symbol(C2.item, Decl(instanceofWithStructurallyIdenticalTypes.ts, 3, 10))
}
else if (isC3(x)) {
>isC3 : Symbol(isC3, Decl(instanceofWithStructurallyIdenticalTypes.ts, 20, 66))
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 23, 14))
return x.item;
>x.item : Symbol(C3.item, Decl(instanceofWithStructurallyIdenticalTypes.ts, 4, 10))
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 23, 14))
>item : Symbol(C3.item, Decl(instanceofWithStructurallyIdenticalTypes.ts, 4, 10))
}
return "error";
}
// More tests
class A { a: string }
>A : Symbol(A, Decl(instanceofWithStructurallyIdenticalTypes.ts, 34, 1))
>a : Symbol(A.a, Decl(instanceofWithStructurallyIdenticalTypes.ts, 38, 9))
class A1 extends A { }
>A1 : Symbol(A1, Decl(instanceofWithStructurallyIdenticalTypes.ts, 38, 21))
>A : Symbol(A, Decl(instanceofWithStructurallyIdenticalTypes.ts, 34, 1))
class A2 { a: string }
>A2 : Symbol(A2, Decl(instanceofWithStructurallyIdenticalTypes.ts, 39, 22))
>a : Symbol(A2.a, Decl(instanceofWithStructurallyIdenticalTypes.ts, 40, 10))
class B extends A { b: string }
>B : Symbol(B, Decl(instanceofWithStructurallyIdenticalTypes.ts, 40, 22))
>A : Symbol(A, Decl(instanceofWithStructurallyIdenticalTypes.ts, 34, 1))
>b : Symbol(B.b, Decl(instanceofWithStructurallyIdenticalTypes.ts, 41, 19))
function goo(x: A) {
>goo : Symbol(goo, Decl(instanceofWithStructurallyIdenticalTypes.ts, 41, 31))
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 43, 13))
>A : Symbol(A, Decl(instanceofWithStructurallyIdenticalTypes.ts, 34, 1))
if (x instanceof A) {
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 43, 13))
>A : Symbol(A, Decl(instanceofWithStructurallyIdenticalTypes.ts, 34, 1))
x; // A
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 43, 13))
}
else {
x; // never
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 43, 13))
}
if (x instanceof A1) {
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 43, 13))
>A1 : Symbol(A1, Decl(instanceofWithStructurallyIdenticalTypes.ts, 38, 21))
x; // A1
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 43, 13))
}
else {
x; // A
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 43, 13))
}
if (x instanceof A2) {
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 43, 13))
>A2 : Symbol(A2, Decl(instanceofWithStructurallyIdenticalTypes.ts, 39, 22))
x; // A2
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 43, 13))
}
else {
x; // A
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 43, 13))
}
if (x instanceof B) {
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 43, 13))
>B : Symbol(B, Decl(instanceofWithStructurallyIdenticalTypes.ts, 40, 22))
x; // B
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 43, 13))
}
else {
x; // A
>x : Symbol(x, Decl(instanceofWithStructurallyIdenticalTypes.ts, 43, 13))
}
}
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