<h1 id="heading-about-npm-and-yarn">About NPM and Yarn</h1>
<p>NPM and Yarn are package managers that help to manage a project’s dependencies.</p>
<h3 id="heading-npmhttpswwwnpmjscom"><a target="_blank" href="https://www.npmjs.com/">NPM</a></h3>
<ul>
<li>It is a package manager for the JavaScript programming language. </li>
<li>It is the default package manager for the JavaScript runtime environment Node.js</li>
</ul>
<h3 id="heading-yarnhttpsyarnpkgcom"><a target="_blank" href="https://yarnpkg.com/">Yarn</a></h3>
<ul>
<li>It was developed by Facebook </li>
<li>It is open-source</li>
</ul>
<p>The intention behind developing yarn(at that time) was to fix performance and security concerns with npm.</p>
<h1 id="heading-installation">Installation</h1>
<ul>
<li><strong>npm:</strong> npm is installed with Node automatically.</li>
<li><p><strong>yarn:</strong> To install yarn npm have to be installed.</p>
<pre><code>  <span class="hljs-built_in">npm</span> install yarn --<span class="hljs-built_in">global</span>
</code></pre></li>
</ul>
<h3 id="heading-the-lock-file">The lock file</h3>
<ul>
<li>NPM generates a ‘package-lock.json’ file.</li>
<li>Yarn generates a ‘yarn.lock’ file.</li>
</ul>
<h3 id="heading-installing-global-dependencies">Installing global dependencies</h3>
<ul>
<li><p><strong>npm:</strong> To install a global package, the command template for npm is:</p>
<pre><code>  <span class="hljs-built_in">npm</span> install -g package_name@version_number
</code></pre></li>
<li><p><strong>yarn:</strong> To install a global package, the command template for yarn is:</p>
<pre><code>  yarn <span class="hljs-keyword">global</span> <span class="hljs-keyword">add</span> package_name@version_number
</code></pre></li>
</ul>
<h1 id="heading-pros-and-cons">Pros and cons</h1>
<p>Npm</p>
<ul>
<li>Come with node</li>
<li>big community</li>
</ul>
<p>Yarn</p>
<ul>
<li>fast</li>
<li>offline mode</li>
<li>yarn why (to track dependences)</li>
</ul>
<h1 id="heading-sources-link">Sources link</h1>
<p><a target="_blank" href="https://www.geeksforgeeks.org/difference-between-npm-and-yarn/">https://www.geeksforgeeks.org/difference-between-npm-and-yarn/</a></p>
<p><a target="_blank" href="https://blog.zenika.com/2017/03/13/npm-vs-yarn/">https://blog.zenika.com/2017/03/13/npm-vs-yarn/</a></p>


# About NPM and Yarn

NPM and Yarn are package managers that help to manage a project’s dependencies.

### [NPM](https://www.npmjs.com/)

- It is a package manager for the JavaScript programming language. 
- It is the default package manager for the JavaScript runtime environment Node.js

### [Yarn](https://yarnpkg.com/)

- It was developed by Facebook 
- It is open-source

The intention behind developing yarn(at that time) was to fix performance and security concerns with npm.

# Installation

- **npm:** npm is installed with Node automatically.
- **yarn:** To install yarn npm have to be installed.

    ```
    npm install yarn --global
    ```

### The lock file

- NPM generates a ‘package-lock.json’ file.
- Yarn generates a ‘yarn.lock’ file.

### Installing global dependencies

- **npm:** To install a global package, the command template for npm is:

    ```
    npm install -g package_name@version_number
    ```

- **yarn:** To install a global package, the command template for yarn is:

    ```
    yarn global add package_name@version_number
    ```

# Pros and cons

Npm

- Come with node
- big community

Yarn

- fast
- offline mode
- yarn why (to track dependences)

# Sources link

[https://www.geeksforgeeks.org/difference-between-npm-and-yarn/](https://www.geeksforgeeks.org/difference-between-npm-and-yarn/)

[https://blog.zenika.com/2017/03/13/npm-vs-yarn/](https://blog.zenika.com/2017/03/13/npm-vs-yarn/)

⚙ Difference between NPM and Yarn

About NPM and Yarn

NPM

Yarn

Installation

The lock file

Installing global dependencies

Pros and cons

Sources link