Failed to export a file using drive API

Problem

I am using: - googleapis@12.3.0 - node@4.3.2 I was trying to download a spreadsheet using Drive API v3 like this: [code block] Resulting file was corrupted. Same situation with 'application/pdf' - I could not open them. After some investigation, I noticed that node-request module downloads data as string (decoded as utf8) by default unless you specify encoding option set to `null`. (what I am downloading here are binary files!) [code block] By adding a line in drive.files.export() function like below, I was able to download the file successfully: [code block] I am aware this file is generated with swig, and probably other methods (like drive.files.get with "alt" set to "media" for binary data) are suffering from the same problem, I do not have sufficient knowledge to propose most effective solution to this. I hope some one could come up with a good idea to this problem.