Is shapes.devs deprecated in jointjs v4.0.4?

I am currently trying to get familiar with a JS library – JointJS(to upgrade a project from version 3.7.7 to 4.0.4 because it is now dependency-free). Apparently I do not see documentation for the free version as much as for JointJS plus.

Is shapes.devs deprecated?
According to the code I still see shapes.devs but the changelog says it is removed?

https://github.com/clientIO/joint/blob/v4.0.4/packages/joint-core/types/joint.d.ts

https://changelog.jointjs.com/plus/4.0.0/changelog.html
(Also this seems to be for plus version could not find changelogs for open source)

Can someone also provide suggestions on how can I upgrade it efficiently while getting familiar to the new library and the way it’s built in the project I am working on(it is an Angular project).