Rechoir is a node module that simplifies the process of requiring files with different extensions, such as .json, .yaml, .toml, and others, without needing explicit require() statements for each file type. It automatically detects the appropriate module to use for parsing based on the file extension, allowing you to easily load configuration files or data regardless of their format, streamlining your project setup and reducing boilerplate code. It supports multiple configuration file formats ensuring versatility.