OS.js v3 GUI Module
This is the main client GUI component module of OS.js.
Contains all components and adapters for the default UIs.
This package has two build targets:
UMD is built with Webpack via
npm run build (or
npm run watch), and ES via
npm run build:esm (or
npm run watch:esm).
The OS.js distribution uses the UMD build to load stylesheets, and everything else uses ES modules to load components, service providers etc.
So effectively you need to run both in order for this to work while developing.
See the Official Manuals for articles, tutorials and guides.