import io
import json
from typing import Any


def list_to_stream(data: list[Any]) -> io.BytesIO:
    """Convert JSON list to JSON string and write to BytesIO."""
    bytes_io = io.BytesIO()
    bytes_io.write(json.dumps(data).encode("utf-8"))
    bytes_io.seek(0)  # Reset the pointer to the beginning
    return bytes_io