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9 - Deep Readonly #5952

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horita-yuya opened this issue Jan 18, 2022 · 0 comments

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horita-yuya commented Jan 18, 2022

type Primitive = boolean | number | string | undefined | number | bigint;
type DeepReadonly<T> = {readonly [key in keyof T]: T[key] extends Primitive | Function ? T[key] : DeepReadonly<T[key]>}

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