tsdx is a zero-config command line interface and build tool designed for developing, bundling, and distributing TypeScript libraries. It functions as a project scaffolder and development toolchain that initializes new libraries from templates with standardized folder structures and pre-configured dependencies.
The project specializes in producing dual-format module distributions, simultaneously generating both CommonJS and ES modules to ensure compatibility across different JavaScript environments. It utilizes a Rollup-based bundling system to compile TypeScript source into optimized distribution formats and automatically generate accompanying type declarations.
Beyond bundling, the toolchain manages the broader development lifecycle by automating static type verification, linting, and source code formatting. It includes a development server with file watching and automatic rebuilds, as well as integrated support for unit test execution and continuous integration workflows.