9 lines
389 B
TypeScript
9 lines
389 B
TypeScript
/**
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* A type that represents a deeply readonly object. This is similar to
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* TypeScript's `Readonly` type, but it recursively applies the `readonly`
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* modifier to all properties of an object and all elements of arrays.
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*/
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export type DeepReadonly<T> = T extends (infer R)[] ? ReadonlyArray<DeepReadonly<R>> : T extends object ? {
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readonly [K in keyof T]: DeepReadonly<T[K]>;
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} : T;
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