var fs = require('fs') var paths = ['C:/libjpeg-turbo'] if (process.arch === 'x64') { paths.unshift('C:/libjpeg-turbo64') } paths.forEach(function(path){ if (exists(path)) { process.stdout.write(path) process.exit() } }) function exists(path) { try { return fs.lstatSync(path).isDirectory() } catch(e) { return false } }