tamtamchik / json-deep-sort

/**

 * Function to sort JSON data.

 * @param {unknown} data - The data to be sorted.

 * @param {boolean} [asc=true] - Whether to sort in ascending order.

 * @returns {unknown} The sorted data.

 */

export function sort(data: unknown, asc: boolean = true): unknown {

  if (!data || typeof data !== 'object') {

    return data;

  }

  if (Array.isArray(data)) {

    return data.map(item => sort(item, asc));

  }

  if (isNonSortableObject(data)) {

    return data;

  }

  const sortedEntries = Object.entries(data as Record<string, unknown>)

    .sort(([a], [b]) => asc ? a.localeCompare(b) : b.localeCompare(a));

  return Object.fromEntries(

    sortedEntries.map(([key, value]) => [key, sort(value, asc)])

  );

}

function isNonSortableObject(obj: object): boolean {

  return (

    obj instanceof Date ||

    obj instanceof RegExp ||

    obj instanceof Function ||

    obj instanceof Error ||

    obj instanceof Map ||

    obj instanceof Set ||

    obj instanceof WeakMap ||

    obj instanceof WeakSet ||

    obj instanceof Promise ||

    Symbol.iterator in Object(obj)

  );

}