Develop Reference

Unable to find module 'prompt-sync'

I am trying to take under input in nodejs using prompt but it shows me the following error:
node:internal/modules/cjs/loader:998
throw err;
^
Error: Cannot find module 'prompt-sync'
Require stack:
- D:\Code\C++\Concepts\conditionals.js
at Module._resolveFilename (node:internal/modules/cjs/loader:995:15)
at Module._load (node:internal/modules/cjs/loader:841:27)
at Module.require (node:internal/modules/cjs/loader:1061:19)
at require (node:internal/modules/cjs/helpers:103:18)
at Object.<anonymous> (D:\Code\C++\Concepts\conditionals.js:1:16)
at Module._compile (node:internal/modules/cjs/loader:1159:14)
at Module._extensions..js (node:internal/modules/cjs/loader:1213:10)
at Module.load (node:internal/modules/cjs/loader:1037:32)
at Module._load (node:internal/modules/cjs/loader:878:12)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12) {
code: 'MODULE_NOT_FOUND',
requireStack: [ 'D:\\Code\\C++\\Concepts\\conditionals.js' ]
}
I have installed 'prompt-sync' using npm but the issue still persists.
This is my code:
const prompt = require('prompt-sync')();
let num = prompt("Enter your age: ");
console.log(typeof num);
I have tried restarting my pc and updated nodejs to its latest version(currently 9.2.0).
Any kind of help will be appreciated.

Clean your installed node modules like so:
npm cache verify
rm -rf node_modules
rm package-lock.json
npm i
rm works if you are under linux or gitbash on Windows. If not delete the node_modules folder and the package.lock.json. (not the package.json)
When executing the npm i, take a look if error messages comes. Not all npm packages are combatiple with all node versions.
Controll in your package.json if the prompt-sync module is in the dependency section. If not reinstall it. You need to be inside your project folder when you install a module.

Javascript Eslint Error: Cannot find module 'optionator'

We've got some error and we try to install optionator but nothing happened. We're using Linux
We're trying to npm i from package.json which include this dependencies
"optionalDependencies": {
"eslint-config-<name>": "github:<username>/<repo>"
}
then we tried to run npm i optionator but still get the same error
Error: Cannot find module 'optionator'
Require stack:
- /usr/share/nodejs/eslint/lib/options.js
- /usr/share/nodejs/eslint/lib/cli.js
- /usr/share/nodejs/eslint/bin/eslint.js
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:885:15)
at Function.Module._load (internal/modules/cjs/loader.js:730:27)
at Module.require (internal/modules/cjs/loader.js:957:19)
at require (internal/modules/cjs/helpers.js:88:18)
at Object.<anonymous> (/usr/share/nodejs/eslint/lib/options.js:12:20)
at Module._compile (internal/modules/cjs/loader.js:1068:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1097:10)
at Module.load (internal/modules/cjs/loader.js:933:32)
at Function.Module._load (internal/modules/cjs/loader.js:774:14)
at Module.require (internal/modules/cjs/loader.js:957:19) {
code: 'MODULE_NOT_FOUND',
requireStack: [
'/usr/share/nodejs/eslint/lib/options.js',
'/usr/share/nodejs/eslint/lib/cli.js',
'/usr/share/nodejs/eslint/bin/eslint.js'
Anyone who experienced this, please help us. Thanks

So if you have not done an npm init then that is the issue. npm init initializes the project and will add the node_modules folder to the working directory, this will set it up as a node project. Then to install a dependency just run a npm install <dependency> although I do recommend doing a --save afterwards as well as it just ensures that the package is put in your current directory
$ npm init
$ npm install optionator --save
npm-init | npm Docs

Nothing worked until when I initialized the project in a new directory and reinstalled all the dependent modules afresh.

Need to give full access to package-lock.json

If you are using linux do this
sudo eslint init

Error: Cannot find module 'serialize-javascript' after running npm start in ReactJS project, even though there it exists in directory node_modules

For some reason my npm start doesn't work anymore, cause: this occurred right after switching to some unused branch (with unrelated histories) and pushing any changes (not realizing that this branch was some outdated one), then git checkout -f "" back to the recent branch. Now it doesnt work for any of my branches due to error Error: Cannot find module 'serialize-javascript'
Full error here:
internal/modules/cjs/loader.js:883
throw err;
^
Error: Cannot find module 'serialize-javascript'
Require stack:
- /home/abdullah/ecommerce-recommend-frontend/node_modules/rollup-plugin-terser/index.js
- /home/abdullah/ecommerce-recommend-frontend/node_modules/workbox-build/build/lib/bundle.js
- /home/abdullah/ecommerce-recommend-frontend/node_modules/workbox-webpack-plugin/build/generate-sw.js
- /home/abdullah/ecommerce-recommend-frontend/node_modules/workbox-webpack-plugin/build/index.js
- /home/abdullah/ecommerce-recommend-frontend/node_modules/react-scripts/config/webpack.config.js
- /home/abdullah/ecommerce-recommend-frontend/node_modules/react-scripts/scripts/start.js
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:880:15)
at Function.Module._load (internal/modules/cjs/loader.js:725:27)
at Module.require (internal/modules/cjs/loader.js:952:19)
at require (internal/modules/cjs/helpers.js:88:18)
at Object.<anonymous> (/home/abdullah/ecommerce-recommend-frontend/node_modules/rollup-plugin-terser/index.js:3:19)
at Module._compile (internal/modules/cjs/loader.js:1063:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
at Module.load (internal/modules/cjs/loader.js:928:32)
at Function.Module._load (internal/modules/cjs/loader.js:769:14)
at Module.require (internal/modules/cjs/loader.js:952:19) {
code: 'MODULE_NOT_FOUND',
requireStack: [
'/home/abdullah/ecommerce-recommend-frontend/node_modules/rollup-plugin-terser/index.js',
'/home/abdullah/ecommerce-recommend-frontend/node_modules/workbox-build/build/lib/bundle.js',
'/home/abdullah/ecommerce-recommend-frontend/node_modules/workbox-webpack-plugin/build/generate-sw.js',
'/home/abdullah/ecommerce-recommend-frontend/node_modules/workbox-webpack-plugin/build/index.js',
'/home/abdullah/ecommerce-recommend-frontend/node_modules/react-scripts/config/webpack.config.js',
'/home/abdullah/ecommerce-recommend-frontend/node_modules/react-scripts/scripts/start.js'
]
}
The node_modules/serialize_javascript does exist and has a settings.json file in it:
{
"spellright.language": [
"en"
],
"spellright.documentTypes": [
"markdown",
"latex",
"plaintext",
"javascript"
]
}
I have tried running npm install (with -g as well, and in the node_modules/serialize_javascript dir) with output:
up to date, audited 1725 packages in 2s
130 packages are looking for funding
run `npm fund` for details
1 critical severity vulnerability
Some issues need review, and may require choosing
a different dependency.
Run `npm audit` for details.
And npm audit:
# npm audit report
node-serialize *
Severity: critical
Code Execution through IIFE - https://npmjs.com/advisories/311
No fix available
node_modules/node-serialize
1 critical severity vulnerability
Some issues need review, and may require choosing
a different dependency.
What's weird is that even checking node -version (node -v works now after sudo get-apt update) gives a similar MODULE_NOT_FOUND error:
internal/modules/cjs/loader.js:883
throw err;
^
Error: Cannot find module '/home/abdullah/ecommerce-recommend-frontend/–v'
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:880:15)
at Function.Module._load (internal/modules/cjs/loader.js:725:27)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
at internal/main/run_main_module.js:17:47 {
code: 'MODULE_NOT_FOUND',
requireStack: []
}
Note: This only occurred after uninstalling node, then reinstalling in wsl with sudo:
rm -rf /usr/local/lib/node_modules/npm
sudo apt-get remove npm
sudo apt install nodejs
sudo apt-get update
Any ideas? Might try to just get rid of node from windows even though I use WSL and then reinstalling everything

Nevermind, I just copied an old serialize_javascript module from a previous commit since it had more stuff than just the settings.json and ran npm install to get it working.

NPM: Cannot find module '../lib/utils/unsupported.js'

I'm getting the following error when trying to do anything with npm:
internal/modules/cjs/loader.js:638
throw err;
^
Error: Cannot find module '../lib/utils/unsupported.js'
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 /usr/local/lib/node_modules/npm/bin/npm-cli.js:19:21
at Object.<anonymous> (/usr/local/lib/node_modules/npm/bin/npm-cli.js:153:3)
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)
I can't run npx create-react-app or any npm commands including uninstalling or updating npm. Yesterday I installed yarn, could that be part of the problem? I also updated my Mac to Catalina 10.15.5 recently. I'm not sure if either/both of these caused the npm issue or not.
What's causing this and how can I fix it?

Found a solution. A modified version of this answer worked.
I ran:
brew uninstall --force node
sudo rm -r /usr/local/lib/node_modules
brew install node
and that did the trick.

"npm start" gives error in ghost (node.js)

I tried to setup ghost after installing node.js but as I run the install for ghost as
npm install --productions
It gives me the following error
> ghost#0.5.10 start /home/kedarkhetia/Downloads/ghost-0.5.10
> node index
module.js:340
throw err;
^
Error: Cannot find module 'streamsearch'
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/kedarkhetia/Downloads/ghost-0.5.10/node_modules/busboy/node_modules/dicer/lib/Dicer.js:5:20)
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)
npm ERR! weird error 8
npm WARN This failure might be due to the use of legacy binary "node"
npm WARN For further explanations, please read
/usr/share/doc/nodejs/README.Debian
npm ERR! not ok code 0
any help is appreciated.

Try running
npm install streamsearch
Does this work?
This may be related:
Cannot install packages using node package manager in Ubuntu

Make sure you have installed streamsearch.
npm install streamsearch
If it is still not working, check that you have cloned stable for production or not. If you did, re-clone it and do installation steps again. Use sudo for npm/grunt commands (if you are on OSX or Linux) for npm ERR!.

I just looked at the Ghost Docs, and it says to install the dependencies for production you must run npm install --production and not npm install --productions. Once you install streamsearch, it will keep complaining until you have installed all the individual dependencies with npm install --production.
Hope this helps!