import numpy as np

# TODO: can make this more specific
def write_csv_rows(
    data: list,
    data_index: np.ndarray,
    nlevels: int,
    cols: np.ndarray,
    writer: object,  # _csv.writer
) -> None: ...
def convert_json_to_lines(arr: str) -> str: ...
def max_len_string_array(
    arr: np.ndarray,  # pandas_string[:]
) -> int: ...
def word_len(val: object) -> int: ...
def string_array_replace_from_nan_rep(
    arr: np.ndarray,  #  np.ndarray[object, ndim=1]
    nan_rep: object,
    replace: object = ...,
) -> None: ...