Custom module express js:Cannot find module name error when modules folder in root directory

Question

Folder structure of my express js app look like this

I am trying to load a modules folder which is located in root directory

routes/users.js

var express = require('express');
var router = express.Router();
var md=require('./modules');

/* GET users listing. */
router.get('/',function(req, res, next) {
  //res.send('respond with a resource');
  console.log('test');
  res.status(200).json({ error: 'message' });
});

module.exports = router;

But i am getting a module not found error:

Cannot find module './modules'

Note:

If modules folder is in node_modules folder require works fine,but getting module name error if its in project root directory, also an index.js file is present in modules folder

Ivan Drinchev · Accepted Answer · 2016-11-29 09:47:50Z

Module resolution in NodeJS is relative to the directory of your dependent module when your resolution starts with ..

In other words :

var module = require('../modules'); // Since your file is in `./routes/index` 
                                   // and `module` is in `./modules/index`

If you don't supply . in front of the required module, then NodeJS will look for that module in node_modules directory.

Excerpt from the documentation, which is self explanatory.

require(X) from module at path Y
1. If X is a core module,
   a. return the core module
   b. STOP
2. If X begins with './' or '/' or '../'
   a. LOAD_AS_FILE(Y + X)
   b. LOAD_AS_DIRECTORY(Y + X)
3. LOAD_NODE_MODULES(X, dirname(Y))
4. THROW "not found"

So in your case when you require('./modules'). NodeJS looks for it in the current directory ./routes, then since it can't find it, goes to look at it in node_modules.

fullmetal · Accepted Answer · 2016-11-29 09:52:38Z

0

Instead of './modules' you can try require('../modules')

answered Nov 29, 2016 at 9:52

fullmetal

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