NodeJS + NPM

Node.js is not programing languages like JS, PHP. It’s just the runtime environment that allows running JS on

whichever machine likes servers, desktops,…

Install multiple versions

First, need to install nvm to manage node version.

For Mac M1 Chipset: If you want to install Node.Js version ≤ 14, this’s not support the new chipset.

To install, you must be install “Rosetta”

Below commands are using for mostly Linux/MacOS users

# Install LTS Version
nvm install --lts

# Install a specific version
nvm install 18

# Install lastest version
nvm install node

# switch between version
nvm use 18.17.0

NPM (Node Package Manager)

# Check version
npm -v

# Clear cache
npm cache clean -f

Shorthand CLI options

i: install
D:—save-dev
g:—global
ls: list

👉 Official Documentation

Install package

package.json is the most basic part to understand and work with Node.js , npm and also javascript . It’s saved all library and framework that you use on your project define by 2 properties dependencies and devDependencies.

Note that: with devDependencies only use for development. If the “NODE_ENV” is “production”, all package defined on devDependencies will not be installed

npm i # Install all package define on package.json
npm i <package-name> # install & save to dependencies
npm i -D <package-name> # install package with dev dependencies
npm i -g <package-name> # install package in global scope

# from github repository
npm i git+https://github.com/abc/xyz.git
npm i git+https://<github repo>#<new_commit_hash>

Update package

npm update <package-name> # use -g to update global

Remove package

npm uninstall <package-name>

Run script

"scripts": {
 "serve": "eleventy --serve"
 "build:css": "tailwindcss -i src/assets/css/tailwind.css -o src/assets/css/main.css --postcss",
 "build:js": "rollup -c rollup.config.js --bundleConfigAsCjs"
},

npm run server # run serve

Bun

Recently, I’m switching to Bun. Bun is a new Javascript runtime that speeds the installation & build. Bun is designed as a drop-in replacement for Node.js. It natively implements hundreds of Node.js

# install bun
curl -fsSL https://bun.sh/install | bash

# check bun version
bun --version

# run a specific file
bun run index.js

# run a script
bun run start # run the `start` script

Troubleshooting

permission denied,….

# Change the permision to "current user"
sudo chown -R $USER ~/.ngrok