[Typescript] 108. Easy - Nullable
typescript Easy 108
2023-09-14 09:00:44 时间
Typescript has NonNullable<T>, let's build a Nullable<T>
type Nullable<T extends Record<PropertyKey, unknown>> = {
[K in keyof T]: T[K] | null
}
type t = Nullable<{a: number, b: string}>
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