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