21 lines
382 B
TypeScript
21 lines
382 B
TypeScript
// @strict: true
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// @target: es2015
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// Repro from #19682
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type Nominal<Kind extends string, Type> = Type & {
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[Symbol.species]: Kind;
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};
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type A = Nominal<'A', string>;
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declare const a: Set<A>;
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declare const b: Set<A>;
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const c1 = Array.from(a).concat(Array.from(b));
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// Simpler repro
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declare function from<T>(): T[];
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const c2: ReadonlyArray<A> = from();
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