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// Repro from #10586
interface A1 {
type: 'a';
subtype: 1;
}
interface A2 {
type: 'a';
subtype: 2;
foo: number;
}
interface B {
type: 'b';
}
type AB = A1 | A2 | B;
const ab: AB = <AB>{};
if (ab.type === 'a') {
if (ab.subtype === 2) {
ab.foo;
}
}
// Repro from #11185
class Square { kind: "square"; }
class Circle { kind: "circle"; }
type Shape = Circle | Square;
type Shapes = Shape | Array<Shape>;
function isShape(s : Shapes): s is Shape {
return !Array.isArray(s);
}
function fail(s: Shapes) {
if (isShape(s)) {
if (s.kind === "circle") {
let c: Circle = s;
}
}
}
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