17 lines
401 B
TypeScript
17 lines
401 B
TypeScript
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type LiteralToCommon<T extends PropertyKey> = T extends number
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? number
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: T extends string
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? string
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: T extends symbol
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? symbol
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: never
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/**
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* @see https://stackoverflow.com/questions/68249999/use-as-const-in-typescript-without-adding-readonly-modifiers
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*/
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export type Mutable<T> = {
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-readonly [K in keyof T]: T[K] extends PropertyKey
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? LiteralToCommon<T[K]>
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: Mutable<T[K]>
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}
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