Packages

The npm registry contains packages, many of which are also Node modules, or contain Node modules.

A package is a file or directory that is described by a package.json file. A package must contain a package.json file in order to be published to the npm registry.

Modules

A module is any file or directory in the node_modules directory that can be loaded by the Node.js require() function.

To be loaded by the Node.js require() function, a module must be one of the following:

• A folder with a package.json file containing a "main" field.
• A JavaScript file.

to install packages most of the time you just have to write in your terminal:

$ npm i <- Name of package ->

Which packages i've used and what they do

Express

It is an Fast, unopinionated, minimalist web framework for Node.js

Express is a minimal and flexible Node.js web application framework that provides a robust set of features to develop web and mobile applications. It facilitates the rapid development of Node based Web applications. Following are some of the core features of Express framework:

• Allows to set up middlewares to respond to HTTP Requests.
• Defines a routing table which is used to perform different actions based on HTTP Method and URL.
• Allows to dynamically render HTML Pages based on passing arguments to templates.

How to install

$ npm install express 

bcryptjs

The bcrypt hashing function allows us to build a password security platform that scales with computation power and always hashes every password with a salt.

How to install

$ npm install bcryptjs 

bodyparser

Body-parser is the Node.js body parsing middleware. It is responsible for parsing the incoming request bodies in a middleware before you handle it.

How to install

$ npm install bcryptjs 

dotenv

DotEnv is a lightweight npm package that automatically loads environment variables from a .env file into the process.env object.

How to install

$ npm install dotenv 

handlebars

Handlebars. js is a templating engine similar to the ejs module in node. js, but more powerful and simple to use. It ensures minimum templating and is a logicless engine that keeps the view and the code separated. It can be used with express as the hbs module.

How to install

$ npm install handlebars 

method-override

Create a new middleware function to override the req. method property with a new value. This value will be pulled from the provided getter . getter - The getter to use to look up the overridden request method for the request.

How to install

$ npm install method-override 

mongodb

MongoDB Node. js driver supports database connection, authentication, CRUD operations, and observations, among other features.

How to install

$ npm install mongodb

nodemon

nodemon is a command-line interface (CLI) utility developed by @rem that wraps your Node app, watches the file system, and automatically restarts the process.

How to install

$ npm install nodemon 

passport & passport-local

Passport is authentication middleware for Node.js. Extremely flexible and modular, Passport can be unobtrusively dropped in to any Express-based web application. A comprehensive set of strategies support authentication using a username and password, Facebook, Twitter, and more.

How to install

$ npm install passport passport-loca 

q

The simplest way to create a Promise object would be to use the Q function constructor, like this new Q(value) will create a new promise object. You can then attach the success and failure handlers, like this new Q(value) .

How to install

$ npm install q 

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source: All the packages and their documentention can be foun on npmjs.com