20 lines
664 B
JavaScript
20 lines
664 B
JavaScript
var o1 = { x: 0 };
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var s1: string = o1.y; // error
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var o2: { x: number; y?: string; } = { x: 0 };
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var s2: string = o2.y || ""; // ok
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var o3: { x: number; y?: string; } = ({ x: 0, y: 0 }: { x: number; });
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var s3: string = o3.y || ""; // error
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var o4: { x: number; y?: string; } = ({ x: 0 }: { x: number; [_:any]:any});
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var s4: string = o4.y || ""; // ok
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var o5 = { x: 0, ...{} };
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var s5: string = o5.y; // ok (spreads make object types extensible)
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var o6: { x: number; [_:any]:any } = { x: 0 };
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var s6: string = o6.y; // ok (indexers make object types extensible)
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var o7: { x: number; y?: string; } = ({ x: 0, y: 0 }: { x: number; [_:any]:number}); // error
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