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