How to get the temp unpack directory of a Node-Webkit application?

Using,

var nwPath = process.execPath;
var nwDir = path.dirname(nwPath);
console.log(nwDir);

in a Node-Webkit application would give me something like:

C:\Users\USERNAME\AppData\Local\Temp

What would give me the directory from within the Node-Webkit application runs the html files from?

Like,

C:/Users/USERNAME/AppData/Local/Temp/nw6860_18341/