1: Understanding NPM - Node.js Package Manager

Understand and practice NPM. Learn how to use NPM in Node.js, how to install NPM packages, how to configure NPM scripts.

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In this course I will explain you what is NPM and how it is used.

You will learn how to initialize new project, how to install new dependencies and explore their child dependencies.

We will also discuss what is Semantic Versioning and what Major, Minor and Patch versions mean.

You will also understand what is the purpose of the package-lock.json file.

I will explain you what is the purpose of the NPM scripts and how they should be used. We will talk about built-in NPM scripts and custom script. Also we will combine several NPM scripts in a one using npm-run-all external package.

You will understand what is executable script and what is the purpose of the .bin folder in the node_modules folder. I will explain you what is shebang line and how it is used on the Unix-based system and on Windows.

Happy learning!

What you'll learn

Initialize any project using NPM init
Install project dependencies
Understand what is the difference between dependencies and development dependencies
Explain what is Semantic Versioning and what different kinds of packages versions mean
Explain difference between Browser Application and Server Package
Understand purpose of the "package-lock" file
Update project dependencies
Configure NPM scripts and execute them
Combine NPM scripts into the one script
Explain what is executable script and how it is executed on the Mac and on Windows

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Requirements

Basic JavaScript knowledge is desirable but not required
Any computer - Mac or PC

Who this course is for:

JavaScript developers who wan

How does NPM package manager work?

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The name npm (Node Package Manager) stems from when npm first was created as a package manager for Node.js. All npm packages are defined in files called package.json. The content of package.json must be written in JSON. At least two fields must be present in the definition file: name and version.

What is Node.js package manager?

Node Package Manager (NPM) is a command line tool that installs, updates or uninstalls Node. js packages in your application. It is also an online repository for open-source Node. js packages. The node community around the world creates useful modules and publishes them as packages in this repository.

How does Node.js npm work?

npm install downloads a package and it's dependencies. npm install can be run with or without arguments. When run without arguments, npm install downloads dependencies defined in a package. json file and generates a node_modules folder with the installed modules.

Why use npm as package manager?

It helps with installing various packages and resolving their various dependencies. It greatly helps with your Node development. NPM helps you install the various modules you need for your web development and not just given you a whole bunch of features you might never need.

What is the difference between Nodejs and npm?

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Node. js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices; npm: The package manager for JavaScript. npm is the command-line interface to the npm ecosystem.

What is npm explain the steps involved for using npm?

What is NPM? NPM is a package manager for Node.js packages, or modules if you like. www.npmjs.com hosts thousands of free packages to download and use. The NPM program is installed on your computer when you install Node.js. NPM is already ready to run on your computer!

Is npm a good package manager?

What is npm? npm (short for Node Package Manager), initially released in 2010, is a tremendously popular package manager among JavaScript developers. It is the default package that is automatically installed whenever you install Node. js on your system.

What are the advantages of npm?

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At its core, NPM helps distribute JavaScript code to web and mobile apps, making ongoing improvement possible without forcing users to delete and update their apps. NPM package manager can also perform a long list of tasks.

What are the npm commands?

CLI Commands
npm. JavaScript package manager.
npm access. Set access level on published packages.
npm adduser. Add a registry user account.
npm audit. Run a security audit.
npm bugs. Bugs for a package in a web browser maybe.
npm cache. Manipulates packages cache.
npm ci. Install a project with a clean slate.
npm completion.

How to use Node.js and npm?

How to Install Node.js and NPM on Windows

Step 1: Download Node.js Installer. In a web browser, navigate to https://nodejs.org/en/download/. ...
Step 2: Install Node.js and NPM from Browser. Once the installer finishes downloading, launch it. ...
Step 3: Verify Installation.

A package manager keeps track of what software is installed on your computer, and allows you to easily install new software, upgrade software to newer versions, or remove software that you previously installed.

Understanding NPM - Node.js Package Manager