import { Extends } from '../../commonness/Extends';
import { If } from '../../commonness/If';
/**
 *
 * Pick properties that are required in an object
 *
 * 객체에서 필수 프로퍼티만 선택하는 타입
 *
 * @param T - The original object type / 원본 객체 타입
 *
 * @returns Properties that are required in an object / 필수 프로퍼티만 선택하는 타입
 *
 * @example
 * type cases = [
 *   Expect<Equal<PickByRequired<{ foo: number; bar?: string }>, { foo: number }>>,
 *   Expect<Equal<PickByRequired<{ foo: undefined; bar?: undefined }>, { foo: undefined }>>,
 * ]
 *
 * @link https://www.utilscript.site/docs/usage-object/pick-by-required
 *
 */
export type PickByRequired<T> = {
    [K in keyof T as If<Extends<Pick<T, K>, Pick<Required<T>, K>>, K, never>]: T[K];
};