Babel Plugin Macros

babel-plugin-macros is a Babel plugin that enables the creation of compile-time code transformations through a standard, convention-based interface, eliminating the need for users to configure individual Babel plugins for each library that offers such optimizations. It allows libraries to provide compile-time benefits (like CSS-in-JS style extraction or GraphQL fragment compilation) by detecting imports ending with `.macro` and processing them. The current stable version is 3.1.0, released in May 2021. While not frequently updated, it remains a foundational tool, notably integrated into popular frameworks like Create React App. Its key differentiator is simplifying the developer experience by centralizing build-time transformations under a single Babel plugin configuration, making compile-time optimizations more accessible and easier to manage.