gruntjs - How can I use the grunt-express for express 4.12? -

i use express 4.12 build project , want use grunt-express start application. have known express 4.12 start application via node ./bin/www, write gruntfile.js this:

express: {   dev: {     options: {       port: 3000,       bases: path.resolve('bin/'),       server: path.resolve('bin/www')     }   } }  grunt.loadnpmtasks('grunt-express') grunt.registertask('default', ['express', 'express-keepalive']); 

unfortunately, when run grunt, reports error:

fatal error: server should provide function called "listen" acts http.server.listen 

but found in www file, there function "listen":

var server = http.createserver(app) server.listen(port); 

i confused this. please teach me write gruntfile.js www file?

the grunt-express server option expects see express app, not bin/www is. if @ bin/www, requiring express app? eg, should app.js in project root, or maybe server/index.js.

also, bases shouldn't bin, rather should pointing public static resources dir, eg /public or if have build step generates minified stuff might /dist.

try (editing server , bases match project):

grunt.initconfig({     express: {         options: {             port: 3000,             hostname: 'localhost'         },         dev: {             options: {                 server: path.resolve('./app.js'),                 bases: [path.resolve('./public')]             }         }     } });