Inquirer.js
Inquirer.js is a popular Node.js library for creating interactive command-line interfaces (CLIs) with prompts, such as lists, checkboxes, input fields, and confirmations. It simplifies building user-friendly CLI tools by handling user input validation, error messages, and asynchronous operations. It is commonly used in scaffolding tools, configuration wizards, and automation scripts.
Developers should learn Inquirer.js when building CLI applications that require user interaction, such as project generators (e.g., create-react-app), configuration setup tools, or interactive scripts for data input. It is ideal for scenarios where you need to guide users through a series of questions with validation, making CLI tools more accessible and less error-prone compared to raw command-line arguments.