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How to install nvm

To install nvm using Homebrew, follow these steps:

Step 1: Install nvm

  1. Open your terminal.

  2. Run the following command to install nvm via Homebrew:

    brew install nvm

  3. After installation, you'll need to add some configuration to your .zshrc file to set up nvm. Add these lines to .zshrc:

    export NVM_DIR="$HOME/.nvm"
[ -s "/opt/homebrew/opt/nvm/nvm.sh" ] && \. "/opt/homebrew/opt/nvm/nvm.sh"  # This loads nvm
[ -s "/opt/homebrew/opt/nvm/etc/bash_completion.d/nvm" ] && \. "/opt/homebrew/opt/nvm/etc/bash_completion.d/nvm"  # This loads nvm bash_completion

  4. To apply the changes, run:

    source ~/.zshrc

Step 2: Use nvm

Once nvm is set up, you can use it to install and manage different versions of Node.js:

  1. Install a Specific Version of Node.js: To install a version of Node.js, use:

    nvm install <version>

    For example, to install Node.js version 16:

    nvm install 16

  2. Use a Specific Version of Node.js: To switch to a different version of Node.js that you have installed, use:

    nvm use <version>

    Example:

    nvm use 16

  3. List Installed Versions: To see all installed versions of Node.js:

    nvm list

  4. Set a Default Node.js Version: To set a default version of Node.js for your environment:

    nvm alias default <version>

Do You Need to Install Node.js Separately?

No, you don’t need to install Node.js separately if you use nvm. nvm allows you to install and manage different versions of Node.js, so it handles the installation for you. For each version you want to use, you can simply run nvm install <version>. This way, you avoid conflicts and keep everything managed by nvm.

How to install npm, nodejs and n and yarn

on Linux

sudo apt install nodejs npm
npm install -g n
n 12.13.0
n 16.13.0
n lts

On MacOs

brew install node

install yarn

sudo curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
sudo sh -c "echo 'deb https://dl.yarnpkg.com/debian/ stable main' >> /etc/apt/sources.list"
sudo apt update

or

npm install -g yarn

How to install a mini web server with npm

npm install -g npx
npx serve

install next

yarn add next

How to add a typescript dependency to a node project

yarn add -E memjs
yarn add -ED @types/memjs

other example:

yarn add -E node-gzip
yarn add -ED @types/node-gzip

other example:

yarn add <package...>

yarn add emotion

add dev only dependency with yarn

yarn add <package...> --dev

How to run tests

with Yarn

yarn test

with a specific test with Node

npm run test -- src/layout.test.ts

How to quickly setup a javascript express end point project

run

npm init -y
npm install --save express
vim app.js
node app.js

insert following code inside app.js

const express = require("express");
const app = express();
app.set("etag", "strong");
app.get("/", (req, res) => {
  res.json({ id: 1, name: "1234" });
});
app.listen(3001);

How to setup a Typescript node project

ref: https://khalilstemmler.com/blogs/typescript/node-starter-project/

mkdir typescript-starter
cd typescript-starter

Setup Node.js package.json

Using the -y flag when creating a package.json will simply approve all the defaults.

npm init -y

Add TypeScript as a dev dependency

npm install typescript --save-dev

Install ambient Node.js types for TypeScript

npm install @types/node --save-dev

Create a tsconfig.json

npx tsc --init --rootDir src --outDir build \
--esModuleInterop --resolveJsonModule --lib es6 \
--module commonjs --allowJs true --noImplicitAny true

AngularJs

installing AngularJS cli

npm install -g @angular/cli

NestJS (Angular-university)

on client

npm install
npm start

on server

in prod mode

npm run build
node dist/src/main.js

in auto reload mode

npm run server

Sanity

export

sanity dataset export documentation

create document

Change editor if needed export EDITOR=$(which subl)

sanity documents create --id everythingDocument --watch --replace --dataset documentation

Edit json with javascrip Chrome console

copy(JSON.stringify(everything.filter(row => row._type === 'page').flatMap(row => row.shelves), null, 2))