Obfuscation Run tests jasmine (if installed globaly) or npm start test Run obfuscation npm start obfuscate Run deobfuscation npm start deobfuscate You should place file that you want to obfuscate/deobfuscate to folder "assets/obfuscation (deobfuscation)" and name it "test.js" Your dictionary should be placed to folder "assets" with name "dictionary.json"