Pika/web: Web Apps Without the Bundler
It’s easy enough to write web-native ESM code yourself, and it is true that some npm packages without dependencies can run directly on the web. Installed packages run in the browser because @pika/web bundles each package into a single, web-ready ESM file. @pika/web leverages bundling internally to output web-native npm dependencies, which was the main reason that many of us started using bundlers in the first place!
Source: www.pikapkg.com