Rimraf is a node.js package implementing the rm -rf command for Node. It recursively deletes directories, similar to the Unix command, making it ideal for cleaning up temporary files and build artifacts in your Node.js projects. Essential for cross-platform compatibility, rimraf handles filesystem quirks and permissions gracefully, ensuring reliable file deletion regardless of the operating system. Popular for its simplicity and effectiveness, rimraf is a core dependency in many build tools and task runners.