local migrations = {
  ["2.0.0"] = function()
    storage.built_item = {}
    storage.last_item = {}
  end,
  ["2.2.0"] = function()
    storage.subgroups = nil
  end,
  ["2.3.0"] = function()
    storage.last_item = nil
  end,
}

--- @type event_handler
local M = {}

function M.on_configuration_changed(e)
  local old_version = e.mod_changes[script.mod_name] and e.mod_changes[script.mod_name].old_version
  if not old_version then
    return
  end

  for version, migration in pairs(migrations) do
    if helpers.compare_versions(old_version, version) < 0 then
      migration()
    end
  end
end

return M