Complete Git Guide: Understand and Master Git and GitHub - Installing the Jest NPM Package for Testing

In this video tutorial, the instructor guides viewers through setting up a Node.js application using the NPM INIT command. A README.md file is added, and the package.json file is examined. The instructor demonstrates installing the Jest package as a development dependency using the NPM install command with the -D flag. The importance of adding node_modules to the .gitignore file is explained. The video concludes with a demonstration of configuring and running Jest tests, noting that no tests are currently present. The next lecture will cover creating modules and sample tests.

What is the purpose of the README.md file in an NPM project?

What command is used to install an NPM package as a development dependency?

Why should the node_modules folder be added to the .gitignore file?

What happens when you run the command 'npm test' without any tests defined?

What are the next steps after installing the NPM package according to the lecture?