I'm developing this project with TypeScript: https://github.com/scott-lin/install-npm-version
When trying to consume the package within another project, I'm getting Cannot find module 'install-npm-version' error.
Repro Steps
npm install install-npm-version#1.0.2
Create repro.js file with const inv = require('install-npm-version'); as the content
Invoke the repro with node .\repro.js
Error
> node .\repro.js
module.js:545
throw err;
^
Error: Cannot find module 'install-npm-version'
at Function.Module._resolveFilename (module.js:543:15)
at Function.Module._load (module.js:470:25)
at Module.require (module.js:593:17)
at require (internal/module.js:11:18)
at Object.<anonymous> (C:\Users\scottlin.REDMOND\Desktop\test\repro.js:1:75)
at Module._compile (module.js:649:30)
at Object.Module._extensions..js (module.js:660:10)
at Module.load (module.js:561:32)
at tryModuleLoad (module.js:501:12)
at Function.Module._load (module.js:493:3)
PS C:\Users\scottlin.REDMOND\Desktop\test>
The main property in the package.json file is used to find the module when using as an in-code Node module. Yours starts with a slash, implying the root directory. This is incorrect, which is why your code is failing.
To fix:
Change
"main": "/lib/Install.js",
to
"main": "lib/Install.js",
Related
I have an issue with the deployment of a node app to production.
When I try to execute with Node a script I get the following error:
internal/modules/cjs/loader.js:498
throw new ERR_PACKAGE_PATH_NOT_EXPORTED(basePath, mappingKey);
^
Error [ERR_PACKAGE_PATH_NOT_EXPORTED]: Package subpath './dist/pako.es5.js' is not defined by "exports" in /opt/iul/sat_web_lfr/node_modules/pizzip/node_modules/pako/package.json
at applyExports (internal/modules/cjs/loader.js:498:9)
at resolveExports (internal/modules/cjs/loader.js:514:23)
at Function.Module._findPath (internal/modules/cjs/loader.js:642:31)
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:1017:27)
at Function.Module._load (internal/modules/cjs/loader.js:899:27)
at Module.require (internal/modules/cjs/loader.js:1090:19)
at require (internal/modules/cjs/helpers.js:75:18)
at Object.<anonymous> (/opt/iul/sat_web_lfr/node_modules/pizzip/js/flate.js:5:12)
at Module._compile (internal/modules/cjs/loader.js:1201:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1221:10)
at Module.load (internal/modules/cjs/loader.js:1050:32)
at Function.Module._load (internal/modules/cjs/loader.js:938:14)
at Module.require (internal/modules/cjs/loader.js:1090:19)
at require (internal/modules/cjs/helpers.js:75:18)
at Object.<anonymous> (/opt/iul/sat_web_lfr/node_modules/pizzip/js/compressions.js:14:19)
at Module._compile (internal/modules/cjs/loader.js:1201:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1221:10)
at Module.load (internal/modules/cjs/loader.js:1050:32)
at Function.Module._load (internal/modules/cjs/loader.js:938:14)
at Module.require (internal/modules/cjs/loader.js:1090:19)
at require (internal/modules/cjs/helpers.js:75:18)
at Object.<anonymous> (/opt/iul/sat_web_lfr/node_modules/pizzip/js/utils.js:7:20) {
code: 'ERR_PACKAGE_PATH_NOT_EXPORTED'
}
However when I execute this script on the testing server works fine.
We even copy and paste the node modules folder from the testing server to the production server but the error is the same.
I think is an error in some external package but I don't understand how the same configuration can have this kind of error depending on the system.
I've tried to update npm from 6.14.5 to 7.23.0 but the error persists.
Both testing and production server uses the same version of Node, 14.X
The only possibility remaining is that I'm using a different NODE_ENV variable between the 2 servers but looking at the error message it's seems unlikely.
Thanks in advance.
With the package.json, it's possible to do something like this
"dependencies": {
"WindowManager": "./lib/WindowManager"
},
But when trying to do this in Electron, it gives me this error:
App threw an error during load
Error: Cannot find module 'WindowManager'
at Module._resolveFilename (module.js:470:15)
at Function.Module._resolveFilename (.../desktop/node_modules/electron/dist/Electron.app/Contents/Resources/electron.asar/common/reset-search-paths.js:35:12)
at Function.Module._load (module.js:418:25)
at Module.require (module.js:498:17)
at require (internal/module.js:20:19)
at Object.<anonymous> (.../desktop/lib/init.js:15:35)
at Object.<anonymous> (.../desktop/lib/init.js:22:3)
at Module._compile (module.js:571:32)
at Object.Module._extensions..js (module.js:580:10)
at Module.load (module.js:488:32)
Is it because of Electron, or am I doing something wrong?
./lib/WindowManager is a folder with a package.json in it with a main pointing to the WindowManager.js, so that should work.
The case you try to do normally works, make sure that the dependency "WindowManager" has been properly copied by the build tools to either:
.../desktop/node_modules/electron/dist/Electron.app/Contents/Resources/app.asar/node_modules
or
.../desktop/node_modules/electron/dist/Electron.app/Contents/Resources/node_modules
If WindowManager does not exist in the disted node_modules there is something wrong with your build process, hard to be more precise than that.
I'm new to webpack and trying to work with some of the scaffoldings out there.
I'm trying to add an alias to the webpack config.
resolve: {
alias: {
'_utils': path.join(PATH_SRC, '/utils'),
},
}
It resolves fine during the build:
./src/utils/debounce.js
But the alias path doesn't get resolved when I try to load the page in the browser.
I feel like I must be missing something basic... Do I maybe need to pass these settings through to the hot-loader or something?
Here's the error I get
GET / 500 238.910 ms - 882
Error: Cannot find module '_utils/debounce'
at Function.Module._resolveFilename (module.js:338:15)
at Function.Module._load (module.js:289:25)
at Module.require (module.js:366:17)
at require (module.js:385:17)
at Object.<anonymous> (/.../src/www/routes/RootRoute/CodeRoute/Component.js:23:17)
at Module._compile (module.js:425:26)
at loader (/.../node_modules/babel-register/lib/node.js:127:5)
at Object.require.extensions.(anonymous function) [as .js] (/.../node_modules/babel-register/lib/node.js:137:7)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:313:12)
There is a demo repo here:
https://github.com/erchaves/example-app/tree/config-resolve-alias-example
(use npm run dev)
With notes in this commit:
https://github.com/erchaves/example-app/commit/3486b230a3188df19fcdcbb8f9401d2b4b8400e9
Thanks!
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.
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')