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NodeJs

Run app:

  1. Simple: npm run start or npm start
  2. with devtool - hot reload: npx nodemon ./mainFile.js

Not able to run

Issue on: npm install

npm  : File C:\Program Files\nodejs\npm.ps1 cannot be loaded because running scripts is disabled on this system. For more information, see about_Execution_Policies at https:/go.microsoft.com/fwlink/?LinkID=135170.

At line:1 char:1
+ npm install
+ ~~~
    + CategoryInfo          : SecurityError: (:) [], PSSecurityException
    + FullyQualifiedErrorId : UnauthorizedAccess

Steps to Fix the Issue

1. Run PowerShell or Windows Terminal as Administrator
2. Check Current Execution Policy:
    Run: `Get-ExecutionPolicy`
    If it returns Restricted, that means script execution is disabled.
3. Set Execution Policy:
    To allow script execution, you can change the execution policy.
    Recommended: RemoteSigned
    Run: `Set-ExecutionPolicy RemoteSigned -Scope CurrentUser`
4. Verify with step 2

save dependencies

You should use --save-dev when installing packages like sass because these are development dependencies-they are only needed while you are developing your application, not when it is running in production.

Cleaner production builds: Packages in devDependencies are not installed when you deploy your app with npm install --production or when the environment variable NODE_ENV is set to production. This keeps your production environment smaller and more secure

Updated dependencies

Update minor version

npm outdated -- Check outdated npm update -- (Safe update) Updates all to their latest minor versions npm i lib1 lib2 -- update selected npm uninstall lib1 lib2 -- uninstall

Update major version (not-recommended for big project)

npm install -g npm-check-updates -- Install package globally ncu -- See all outdated ncu -u -- update packages in package.json npm install -- install npm outdated or ncu -- Verify

Code

Type document.body.contentEditable = true in browser console to make the whole page editable and uses it then.

Unable to install dependencies?

In case getting error of mkdir not allowed -13 use:

npm update --legacy-peer-deps -- Bypass peer dependency check.