import json


def get_json_file_contents(file_path):
    """
    Returns contents of a JSON file as a string array.
    :param file_path: Absolute path for the file.
    :return: str array or None
    :rtype: List<str>
    :raises: This method raises OSError if it cannot read file_path.
    """
    with open(file_path, encoding='utf-8') as handler:
        return json.load(handler)