As developers, we frequently encounter projects that demand different Node.js versions. This scenario is a pitfall for both fresh and experienced developers who may not be regularly involved in Node.js projects: ensuring the correct Node.js version is used for each project.
Before installing dependencies and running a project, it's crucial to verify that your Node.js version matches or is at least compatible with the project's requirements. Failure to do so can result in a barrage of errors and warnings in your terminal, consuming valuable time in troubleshooting. Fortunately, there's a solution: version managers.
What is a Version?Manager?
A version manager is a software tool that allows you to effortlessly install, switch between, and remove different versions of programming languages. Here are some popular examples for various languages:
Node.js: nvm
Ruby: rbenv, rvm, chruby
Java: jabba
PHP: phpenv, phpbrew
Python: pyenv
Multi-language: asdf (command-line tool)
The Node Version?Manager
nvm, specifically designed for Node.js, allows you to seamlessly install and switch between different Node.js versions directly from your command line. It's a per-user installation and works with various POSIX-compliant shells (sh, dash, ksh, zsh, bash) on Unix-based systems, macOS, and Windows WSL.1
Let's explore some use cases from the official nvm repository:
node -v v16.9.1 $ nvm use 14 Now using node v14.18.0 (npm v6.14.15) $ node -v v14.18.0 $ nvm install 12 Now using node v12.22.6 (npm v6.14.5) $ node -v v12.22.6
In this example, we see how to:
Check the current Node.js version (node -v).
Switch to Node.js version 14 (nvm use 14).
Verify the switched version (node -v).
Install Node.js version 12 (nvm install 12).
Confirm the newly installed version (node -v).
In the next article, I'll provide a straightforward guide on how to install nvm and effectively define specific Node.js versions using?.nvmrc files.
Conclusion
Utilizing a version manager for your projects is a critical time-saving strategy that ensures smooth development workflows. It's an essential tool for any developer's toolbox.
What's your preferred solution for handling these situations? Share your thoughts in the comments below!
References
- https://github.com/nvm-sh/nvm
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