CSS Modules is a build-time tool that transforms local class names into unique, collision-resistant identifiers. By scoping styles to specific components during the compilation phase, it ensures that visual definitions remain isolated and prevents naming conflicts within web applications.
The project functions as a frontend build plugin that integrates with module bundlers to manage style dependencies and assets. It generates a JavaScript object mapping that links original local class names to their transformed global counterparts, allowing developers to reference styles programmatically within their application code.
This system supports modular development by utilizing standard file system resolution logic to locate and import external assets or shared styles. It also provides hooks for post-processor integration, enabling automated style manipulation and static analysis as part of the standard build pipeline.
