nw.js protect every .js file with nwjc tool

Is this possible to protect all files in project with nwjc tool and then package all this with nw-builder for example ?

Why this function only works with one file ? Official site says that they fixed performance issue in 0.22, but why there is no tool to protect all project files and include them like in index.html:

require('nw.gui').Window.get().evalNWBin(null, 'app/mytest.bin');

via Arti