19 lines
527 B
TypeScript
19 lines
527 B
TypeScript
// @declaration: true
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export type InvalidKeys<K extends string|number|symbol> = { [P in K]? : never };
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export type InvalidKeys2<K extends string|number|symbol> = (
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{ [P in K]? : never }
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);
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export type A<T> = (
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T & InvalidKeys<"a">
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);
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export type A2<T> = (
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T & InvalidKeys2<"a">
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);
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export const a = null as A<{ x : number }>;
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export const a2 = null as A2<{ x : number }>;
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export const a3 = null as { x : number } & InvalidKeys<"a">;
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export const a4 = null as { x : number } & InvalidKeys2<"a">;
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