Pika/pack – NPM packaging, reimagined

BONUS: some of your users may support modern JavaScript, and can leverage this ES2018 distribution directly for a smaller, faster, less-bloated package. And because @pika/pack builds your entire package, your package.json manifest is automatically configured for you with “main”, “module”, and “esnext” entry points. With @pika/pack, every package automatically gets TypeScript definition files thanks to the @pika/plugin-build-types plugin.

Source: www.pikapkg.com