/**
 * Returns new object with copied all properties without these specified.
 *
 * @param {Object} object - source object
 * @param {Array.<string>} props - properties to skip
 * @example
 * omit({ name: "Jack", age: 69 }, ["age", "title"]);
 * // { name: "Jack" }
 * @example
 * omit(["hello", "world"], [0]);
 * // { 1: "world" }
 * @returns {Object} - new object without given properties
 */
const omit = <T extends object, K extends string>(
  object: T | undefined,
  props: K[]
): T extends null ? { [key: string]: never } : Omit<T, K> => {
  if (object == null) {
    // @ts-expect-error TS can't handle implementation of dynamic return types yet
    return {};
  }
  if (!props.length) {
    // @ts-expect-error TS can't handle implementation of dynamic return types yet
    return {
      ...object,
    };
  }

  const propsToOmit = props.map(String);

  const result = {};
  for (const key in object) {
    if (!propsToOmit.includes(key)) {
      (result as T)[key] = object[key];
    }
  }
  // @ts-expect-error TS can't handle implementation of dynamic return types yet
  return result as Omit<T, K>;
};

export { omit };