Modules are like JavaScript libraries that can be used in a Node.js application to include a set of functions. To include a module in a Node.js application, use the require() function with the parentheses containing the module’s name.
Node.js has many modules to provide the basic functionality needed for a web application. Some of them include:
| Core Modules | Description |
| HTTP | Includes classes, methods, and events to create a Node.js HTTP server |
| util | Includes utility functions useful for developers |
| fs | Includes events, classes, and methods to deal with file I/O operations |
| url | Includes methods for URL parsing |
| query string | Includes methods to work with query string |
| stream | Includes methods to handle streaming data |
| zlib | Includes methods to compress or decompress files |
What are the modules in Node.js?