/**
 * Deletes specified keys from an object and returns a new object without those keys.
 * If the input object is undefined, the function returns undefined.
 *
 * @param obj - The input object.
 * @param keys - An array of keys to be deleted from the object.
 * @returns A new object without the specified keys, or undefined if the input object is undefined.
 *
 * @template T - The type of the input object.
 */
export declare const deleteObjectKeys: <T>(obj?: T, keys?: Array<keyof T>) => Partial<T> | undefined;