import re

def is_valid_variable_name(name: str) -> bool:
    if len(name) > 255:
        return False
    # Regex to check if the string is a valid JavaScript variable name
    # It must start with a letter, underscore, or dollar sign, and can be followed by letters, numbers, underscores, or dollar signs
    pattern = r'^[a-zA-Z_$][a-zA-Z0-9_$]*$'
    return bool(re.match(pattern, name))