Node.js

Node Version Manager (NVM) is a popular tool to manage multiple Node.js versions on a single system. Here are five ways to set your default Node.js version using NVM: Using nvm alias default command Using nvm use with .nvmrc Automatically switch Node version Using nvm install Using the NVM GUI Method 1: Using the nvm … Read more

Here are five ways to check if a file exists in Node.js. Using fs.existsSync() (Synchronous) Using fs.promises.access() (Asynchronous with Promises) Using fs.access() with Callback (Asynchronous with Callback) Using “stat” methods Using “file” methods Method 1: Using fs.existsSync() (Synchronous) To check if a file exists synchronously in Node.js, use the “fs.existsSync()” method. The fs.existsSync() method returns … Read more

Here are two ways to read environment variables in Node.js. Using the process.env object Using a .env File with dotenv Method 1: Using the process.env object The simplest way to read environment variables in Node.js is to “use the process.env object.” Each environment variable is an attribute of the process.env object. To access a specific environment … Read more

Could not determine jupyterlab build status without Node.js error typically occurs when “Node.js is n0t installed on your system, or JupyterLab can’t locate it.” The main reason for the error is that JupyterLab’s extension system relies on Node.js to handle the installation and compilation of extensions. The easiest way to fix the could not determine jupyterlab … Read more

The [nodemon] app crashed – waiting for file changes before starting error occurs when “there is an error in your code that causes nodemon to crash.” Nodemon is a utility that monitors for changes in your Node.js application and automatically restarts the server. This is extremely helpful in development because you don’t need to restart … Read more

The zsh: command not found: nodemon error occurs when the “nodemon command is unavailable in your zsh shell’s PATH or nodemon is not installed in your system.” Common reasons for the error Nodemon is not installed in your system. Nodemon is available in a different path. Nodemon utility is not installed globally. How to fix the … Read more