Currently, Esri provides a downloadable version of the ArcGIS JS API for offline hosting. This includes core modules but does not include the new Map Components (@arcgis/map-components) or Calcite Components (@esri/calcite-components), which are only available via CDN or NPM.
It would be very useful for offline/enterprise environments if these modules could also be included in the hosted API package, or if there was a clear supported way to host them locally.
URL: https://developers.arcgis.com/javascript/latest/downloads/
Hi @CyberSmarTalk, thanks for posting your issue here. We are currently working on clear messaging for working with components locally. There is an Idea here where you can add your use case and thoughts for further evaluation (and the comment below also contains more information about downloads, etc):