如何在nodejs中读取以utf-16编码的文件？

I have to read a file encoded in UTF-16 using nodejs (in chunks because it is very large). The data from the file will go into a mongodb, so I will need to convert it into utf-8. From googling, it seems that this is just plain not supported by Node, and I will have to resort to converting the raw data from a buffer myself. But I also think there ought to be a better way and I'm just not finding it. Any suggestions?I have to read a file encoded in UTF-16 using n