Deserialized Type TypeScript

deserialized.ts

type Deserialized<T> = T extends Array<infer U>
  ? Array<Deserialized<U>>
  : T extends string | number | boolean
  ? T
  : "toJSON" extends keyof T
  ? T["toJSON"] extends (...args: any) => any
    ? ReturnType<T["toJSON"]>
    : { [K in keyof T]: Deserialized<T[K]> }
  : { [K in keyof T]: Deserialized<T[K]> };