Introduction

Node.js has revolutionized the way server-side applications are built. With its event-driven architecture and extensive module ecosystem, Node.js enables developers to create highly scalable and performant applications. However, managing several versions of Node.js can be challenging, making it difficult to get started. This is where Node Version Manager (NVM) comes into play, providing developers with a seamless solution for version control.

This post will delve into the world of Node.js and NVM, exploring their functionalities, benefits, and how they work together to enhance the workflow of development projects.

Overview of Node.js and NVM

What is Node.js?

Node.js is an open-source, cross-platform JavaScript runtime environment built on Chrome's V8 JavaScript engine. Unlike traditional server-side technologies, Node.js allows developers to execute JavaScript code on the server, bringing the language to the backend. By leveraging an event-driven, non-blocking I/O model, Node.js achieves exceptional scalability and efficiently handles concurrent requests. It has gained immense popularity in building real-time applications, APIs, microservices, as well as full-stack web applications.

Key features and benefits of Node.js

• Vast Ecosystem: Node.js boasts a massive ecosystem of reusable modules known as npm (Node Package Manager). With over a million packages available, developers can easily integrate existing solutions into their projects, saving valuable development time.

• Fast Execution: Node.js leverages the V8 JavaScript engine, renowned for its high-performance execution. This results in rapid code execution and optimized resource utilization.

• Scalability: Node.js enables the creation of scalable applications, thanks to its ability to handle a large number of concurrent connections efficiently. This makes it well-suited for building applications with high traffic demands.

What is Node Version Manager (NVM)?

Managing multiple versions of Node.js on a single machine can be challenging, especially when different projects require different versions. Node Version Manager (NVM) provides a seamless solution to this problem. It is a command-line tool that allows developers to install, switch, and manage multiple Node.js versions effortlessly. NVM provides a consistent environment for development, ensuring that projects run on the required Node.js version without conflicts.

Key features and benefits of NVM

• Version Control: NVM allows developers to install and switch between multiple Node.js versions, ensuring compatibility with different projects. It provides flexibility without the need for manual installations and avoids conflicts between projects that rely on different Node.js versions.

• Project Isolation: With NVM, each project can have its own isolated environment with a specific Node.js version and set of dependencies. This avoids clashes between project dependencies and ensures consistent behaviour across different projects.

• Easy Installation and Upgrades: NVM simplifies the process of installing and upgrading Node.js versions. It provides a straightforward command-line interface to manage versions, making it easy to stay up-to-date with the latest releases.

NVM usage illustration

Note ✍🏾: To switch between different versions of Node.js, navigate to your terminal and type nvm [node version number]: i.e. nvm 16.17.1

Now that you're familiar with Node.js and NVM, this next section will guide you through the step-by-step process of setting up Node.js and NVM on your local machine. Let's get started!

Installing Node.js and NVM

Step 1: Install NVM

1.1. Visit the NVM GitHub repository at https://github.com/nvm-sh/nvm.

1.2. Look for the installation instructions in the README file. As of now, the recommended method is to use the installation script. You can find the script under the section "Install & Update Script."

1.3. Copy the installation script. It should look something like this:

```bash
   curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.38.0/install.sh | bash
```

1.4. Paste the script into your terminal and press Enter to execute it.

1.5. The installation script will download and install NVM on your machine. Follow any prompts that may appear during the installation process.

1.6. Once the installation is complete, close and reopen your terminal, or run the command `source ~/.bashrc` to load NVM into your current session.

Step 2: Install Node.js

With NVM installed, we can now proceed to install Node.js. Follow these steps:

2.1. Open your terminal and type the following command to check the available versions of Node.js:

```bash 
   nvm ls-remote
```

2.2. From the list of available versions, choose the one you want to install. For example, let's say you want to install version 18.16.1. Run the following command to install it:

```bash 
   nvm install 18.16.1
```

2.3. NVM will download and install the specified version of Node.js. This process may take a few moments.

2.4. Once the installation is complete, you can verify that Node.js is installed by running the following command:

```bash 
   node --version
```

2.5. You should see the version number of Node.js printed in the terminal, confirming a successful installation.

You have successfully installed Node.js and NVM on your machine 🥳! You can now use NVM to manage multiple versions of Node.js and develop applications with ease.

Conclusion

Node.js and NVM enable developers to build scalable and high-performance applications. With Node.js, developers can harness JavaScript's full potential on the server-side, while NVM manages multiple Node.js environments effortlessly. These tools enable developers to simplify their development process, leading to more efficient, robust, and versatile applications.

Thanks for reading. Happy Coding!