developer-roadmap/roadmaps/javascript/content/commonjs@4EXeGkOpfAViB9Uo4zL6O.md

CommonJS

CommonJS modules are the original way to package JavaScript code for Node.js. Node.js also supports the ESModules standard used by browsers and other JavaScript run-times, but CJS is still widely used in backend Node.js applications. Sometimes these modules will be written with a .cjs extension.

Visit the following resources to learn more:

• @article@How the CJS Module System Works
• @video@How to Import and Export Modules in CJS