def nanprod(values, axis=None, skipna=True, min_count=0, mask=None):
    """
    Parameters
    ----------
    values : ndarray[dtype]
    axis: int, optional
    skipna : bool, default True
    min_count: int, default 0
    mask : ndarray[bool], optional
        nan-mask if known

    Returns
    -------
    result : dtype

    Examples
    --------
    >>> import pandas.core.nanops as nanops
    >>> s = pd.Series([1, 2, 3, np.nan])
    >>> nanops.nanprod(s)
    6.0

    Returns
    --------
    The product of all elements on a given axis. ( NaNs are treated as 1)
    """
    if mask is None:
        mask = isna(values)
    if skipna and not is_any_int_dtype(values):
        values = values.copy()
        values[mask] = 1
    result = values.prod(axis)
    return _maybe_null_out(result, axis, mask, min_count=min_count)