import numpy as np
import json

class NumpyArrayEncoder(json.JSONEncoder):
    def default(self, obj):
        if isinstance(obj, np.integer):
            return int(obj)
        elif isinstance(obj, np.floating):
            return float(obj)
        elif isinstance(obj, np.ndarray):
            return obj.tolist()
        else:
            return super(NumpyArrayEncoder, self).default(obj)
        
class BasSender:
    def __init__(self) -> None:
        pass

    def send(self, messages):
        raise NotImplementedError()