Im trying to use a simple "colors" module to set cli-colors in my logs, nothing special.
Well, i have a module called colors.js in the path ./app/config/colors.js, the content:
var clc = require('cli-color');
var colors = {
ok: clc.cyan,
error: clc.red.bold,
warn: clc.yellowBright,
high: clc.white.bgGreen
};
module.exports = colors;
Simple. Well, when i require it in the server.js (at the root of the project, above of /app) it works fine, but, when i try to use it in the ./app/config/db.js it throws me an error:
Error: Cannot find module './app/config/colors.js'
at Function.Module._resolveFilename (module.js:338:15)
at Function.Module._load (module.js:280:25)
at Module.require (module.js:364:17)
at require (module.js:380:17)
at Object.<anonymous> (/home/nano/Dev/bears-api/app/config/db.js:3:14)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Module.require (module.js:364:17)
14 Sep 10:21:00 - [nodemon] app crashed - waiting for file changes before starting...
Why if it works in the server.js?
You probably required the module using a relative path.
Relative paths are resolved in relation to the requiring module's location.
Quoting docs
A module prefixed with './' is relative to the file calling require().
That is, circle.js must be in the same directory as foo.js for
require('./circle') to find it.
So if you did a
var whatever = require('./app/config/colors.js');
inside a module located in ./app/config/ then node will look for ./app/config/app/config/colors.js and fail.
If both requiring and required module are in the same directory just use:
var whatever = require('./colors.js');
or even shorter:
var whatever = require('./colors');
The module should be in the "node_modules" folder to access it like you have described.
Related
i following an express.js tutorial andd after some code and functionalities with api requests i followed exactly how he changed the code that handles these requests into a seperate js file in another folder just to clean up the code but after i did that this error showed up
i tried changing the file name , i tried removing the node-modules folder and running npm install again and i tried installing the module with the issue
internal/modules/cjs/loader.js:638
throw err;
^
Error: Cannot find module '/routes/api/members'
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
at Function.Module._load (internal/modules/cjs/loader.js:562:25)
at Module.require (internal/modules/cjs/loader.js:690:17)
at require (internal/modules/cjs/helpers.js:25:18)
at Object.<anonymous> (C:\Users\Get_Rico\Desktop\crashcoursse\index.js:11:25)
at Module._compile (internal/modules/cjs/loader.js:776:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:787:10)
at Module.load (internal/modules/cjs/loader.js:653:32)
at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
at Function.Module._load (internal/modules/cjs/loader.js:585:3)
[nodemon] app crashed - waiting for file changes before starting...
i expect nodemon to save the changes and work just fine with no errors just like what happened in the tutorial
It appears the error is probably coming from this line of code and it's telling you that it can't find the '/routes/api/members' module file.
And, this would not be working because you're trying to load a local module without a proper path name. If no path is specified, then it tries to load a global or built-in module. If that module is in the current directory, then you should use the correct path:
const yourModule = './routes/api/members';
I've following folder structure.
I am trying to access my custom module (core_programming/Constants.js) in other files.
I can access it in routes/index.js without any issue using following code.
var Constants = require('../core_programming/Constants.js');
But I am getting error when I try to access it inside core_programming/User.js with following statement.
var Constants = require('Constants.js');
It gives following error:
module.js:338
throw err;
^
Error: Cannot find module 'Constants.js'
at Function.Module._resolveFilename (module.js:336:15)
at Function.Module._load (module.js:286:25)
at Module.require (module.js:365:17)
at require (module.js:384:17)
at Object.<anonymous> (D:\nodeJsProjects\AutomateBuild\core_programming\User.js:3:18)
at Module._compile (module.js:434:26)
at Object.Module._extensions..js (module.js:452:10)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Module.require (module.js:365:17)
at require (module.js:384:17)
1 Oct 11:56:35 - [nodemon] app crashed - waiting for file changes before starting...
I've tried different ways for defining path in require like ../core_programming/Constants.js and ./core_programming/Constants.js but nothing works out.
What is the correct way for loading custom modules from the same directory.
And, I am on Windows if that helps.
Try to use:
var Constants = require('./Constants.js');
This will force Node to figure out you are looking for a relative path and not a package in node_modules.
On a side note, windows paths use \, so consider trying it as well:
var Constants = require('.\Constants.js');
I'm building a basic MEAN webapp and am new to the stack. I have the front end running, but as soon as I add the following lines to app.js:
var mongoose = require('mongoose');
require('./models/test');
mongoose.connect('mongodb://localhost:3000/design-data-test');
I get the following error in terminal:
Error: Cannot find module 'debug'
at Function.Module._resolveFilename (module.js:336:15)
at Function.Module._load (module.js:278:25)
at Module.require (module.js:365:17)
at require (module.js:384:17)
at Object.<anonymous> (/Users/username/node_modules/mongoose/node_modules/mquery/lib/mquery.js:11:13)
at Module._compile (module.js:460:26)
at Object.Module._extensions..js (module.js:478:10)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Module.require (module.js:365:17)
at require (module.js:384:17)
And all of my front end code stops running. Mongodb is running on the default port.
How would I go about resolving this error?
For future visitors: You are probably missing a dependency. Make sure you run this first:
npm install
... before you run your app with npm start or node <app>
I think this may happen if you have a child dependency on debug through another package (for example express or mongoose) but you did not provide the dependencies' package.json files with the deployed application which makes node.js unable to locate debug.
I wanted to create a very minified version of hapi-ninja and came across following problem:
var settings = require('./app/server/config/settings');
var routes = require('./app/server/config/rout');
The first line works as it should an returns my modules. But the second line throws following Exception
AssertionError: path must be a string
at Module.require (module.js:362:3)
at require (module.js:380:17)
at Object.<anonymous> (/home/hknlof/development/mygit/todos/app/server/config/rout.js:8:21)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Module.require (module.js:364:17)
at require (module.js:380:17)
at Object.<anonymous> (/home/hknlof/development/mygit/todos/tryout.js:1:75)
I am running on Node v0.10.25 and hapi-ninja is working fine. When I don't require the rout module it does work. My rout and settings modules look very much the same as in hapi-ninja. I isolated the two require statements in one file. Tried both on their own, still the same result. Can't get my head around this. Tried debugging but the value of the node internal path does never change to the above string. Encoding ist always utf-8.
Thank you vkuchartkin and Tracker1.
So my mistake was that I forgot to require a certain directory in my rout.js
var getController = require(module, '../controller');
was my code. Should have been:
var requireDir = require('require-directory');
var get Controller = requireDir(module, '../controller');
Now I feel a bit stupid
module.js:340
throw err;
^
Error: Cannot find module './models/todo'
at Function.Module._resolveFilename (module.js:338:15)
at Function.Module._load (module.js:280:25)
at Module.require (module.js:364:17)
at require (module.js:380:17)
at Object.<anonymous> (C:\Users\Basel\Desktop\Todo List\routes\api.js:1:74)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Module.require (module.js:364:17)
C:\Users\Basel\Desktop\Todo List>
Why this application won't start up? I've already tried a global npm install.
In ./models/todo, the period indicates that node will look in the same folder that api.js is in, which would look for \Todo List\routes\models\todo.js. This does not start from the root of the application. To require this, you'll need to us two periods to jump up a level, and specify the app path as well:
var todo = require('../app/models/todo');
maybe you did not set the system value : NODE_PATH; it should point to your global module location;
in Linux: export NODE_PATH=/usr/local/lib/node_modules/ works good for me;
in my case, the file name i had given in my require statement was wrong. I had my models file named posts.js and i was using require('./models/post'). It worked after i changed it to require ('.models/posts')