SyntaxError: Invalid or unexpected token at createScript (vm.js:80:10)

It looks like there is some encoding issue with the file that you're trying to run with Node. Sometimes, files created with some command line utility does some encoding issues with the file. So, I would suggest not to use them to create file. Just create file with Right-Click > New File > app.js and replace your old file with this app.js. And try running node app.js.