import { Extends } from '../../commonness/Extends';
import { If } from '../../commonness/If';
import { Tuple } from '../../primitive/Tuple';
/**
 *
 * Make all properties of an object read-only
 *
 * 객체의 모든 속성을 읽기 전용으로 만드는 타입
 *
 * @param T Object / 객체
 *
 * @returns DeepReadonly object / 읽기 전용 객체
 *
 * @example
 * type X = { x: { y: { z: string } } };
 *
 * type cases = [
 *   Expect<Equal<DeepReadonly<X>, { readonly x: { readonly y: { readonly z: string } } }>>,
 * ]
 *
 * @link https://www.utilscript.site/docs/usage-object/deep-readonly
 *
 */
export type DeepReadonly<T> = {
    readonly [k in keyof T]: T[k] extends Record<PropertyKey, any> ? If<Extends<T[k], (...args: Tuple) => unknown>, T[k], DeepReadonly<T[k]>> : T[k];
};