node.js - Express : Cannot Find Module? -

i using express routing, , want call function inside static javascript file signup.js, error saying

error: cannot find module './js/list.js'  

my directory structure follows:

app.js -routes/signup.js -public/js/list.js 

in app.js file, have line:

app.use(express.static(path.join(__dirname, 'public'))); 

in signup.js, have:

var listmodel = require('./js/list.js'); 

my list.js file contains:

module.exports.list = function (username, category) {    return ({     "owner" : usernamename,     "category" : category,     "completed" : [],     "planned" : [],     "current" : [],     "dropped" : [],     "onhold"  : []   }); } 

is there else missing in order import list function signup file? thanks!

since have different signup , list have different parent directories, nodejs require function not consider them siblings. need write

var listmodel = require('../public/js/list.js'); 

inside of routes/signup.js

if had file public/test.js indeed use

var listmodel = require('./js/list.js'); 

to require dependency within it.