ncc is a Node.js build tool and project bundler that compiles a project and its dependencies into a single JavaScript file. It functions as a single-file JavaScript bundler and TypeScript compiler, converting type-annotated source files into standard JavaScript compatible with the Node.js runtime.
The tool focuses on serverless function optimization by reducing the number of files and dependencies in a deployment package to improve portability and cold start times. It automates the software release workflow by integrating the compilation and bundling process into programmatic scripts.
The project covers static dependency analysis, source map generation, and the externalization of binary modules to prevent corruption of native addons. It also includes a file watcher for automatic rebuilds and a programmatic compiler interface for custom script execution.