pika-pack
Build your npm package using composable plugins
...The tool can wrap common build systems such as Babel and Rollup with npm-friendly defaults. It can generate optimized package outputs for different targets, including Node, web, and type definition workflows. pika-pack also helps produce package metadata, which reduces the amount of manual package setup required. Because the repository is archived, it is most useful today as a historical reference for package build automation and plugin-based publishing workflows.