Volto core add-ons

Volto has the concept of "core add-ons". They are add-ons that are always installed in Volto. They are located separately from the main code in the packages folder. If Volto uses them directly, these add-ons must be released as stand-alone add-ons. You can use these packages released as standalone add-ons installed in your old Volto projects to test them or to have a bleeding edge feature without having to upgrade to the latest Volto version. You can add them to non-Volto projects to get parts of the Volto feature set outside of the main project.

Enabling a core add-on

This is a feature that only spans in Volto core itself, so it does not apply to projects or add-ons. The core add-ons are enabled in Volto's own package.json. It uses the key coreAddons:

  "coreAddons": {
    "volto-slate": {
      "package": "@plone/volto-slate"
    }
  },

The structure is similar to mrs-developer.json. The key is the name of the folder, then an object with at least the key package with its value as the name of the package that is going to be used.