def str_isnullorwhitespace(value: str) -> bool:
    """
    Indicates whether a specified string is `null`, empty, or consists only of
    white-space characters

    Parameters
    -----------
    value: str
        The string to test.

    Returns
    -----------
    boolean
        `true` if the `value` parameter is `null` or Empty, or if `value`
        consists exclusively of white-space characters.
    """
    return not (value and not value.isspace())


def parse_str_to_list(s: str) -> list[str]:
    """
    Accepts strings formatted as lists with square brackets. Elements can be either quoted or unquoted strings, or just plain strings separated by commas or spaces.
    
    Parameters
    -----------
    s: A list of strings formatted as a string.
    
    Returns
    -----------
    list[str]
        A list of strings.
    """
    if not isinstance(s, str):
        return []

    # Regular expression to match quoted or unquoted strings
    pattern = r'"[^"]*"|\'[^\']*\'|\w+'
    
    # Find all matches of the pattern in the input string
    matches = re.findall(pattern, nodes)
    
    # Remove quotes from the matched strings and join them using commas
    parsed_s = [x.strip("\"'") for x in matches]

    return parsed_s