Here's as small script to run an external EXE using NodeJS. I used this to run a dependency EXE from my ElectronJS application.

RunningEXEViaNodeJS.js

function runExternal(){
    var execFile = require('child_process').execFile, child;
    //The `process.cwd()` //Gets the current working directory.
    //Just writing the name of the exe file and being in the same directory does not work!
     child = execFile(process.cwd()+'nameofexe.exe', function(error,stdout,stderr) { 
        if (error) {
        	console.log(error.stack); 
        	console.log('Error code: '+ error.code); 
        	console.log('Signal received: '+ error.signal);
        }else{     
          console.log("Console output from the exe: "+stdout);
          console.log("Console error from the exe: "+stderr);
        }
      }); 
      child.on('exit', function (code) { 
        console.log('Child process exited '+ 'with exit code '+ code); //Code 0 means all good.
      });
};