9 lines
348 B
TypeScript
9 lines
348 B
TypeScript
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export type Writable<T> = {
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-readonly [P in keyof T]: T[P];
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};
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export type WritableArray<T> = T extends readonly any[] ? Writable<T> : T;
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export type IfNever<T, Y = true, N = false> = [T] extends [never] ? Y : N;
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export type IfUnknown<T, Y, N> = [unknown] extends [T] ? Y : N;
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export type UnknownToNever<T> = IfUnknown<T, never, T>;
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export {};
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