[Baertram]

I had changed the code in HideMe v3 already to use the name constant but you have stripped it again
Here is the changed code for v4, all files + the zip archive attached:

HideMe.txt

## Title: HideMe
## Description: Immersive changes to the map, pins and zoom
## Version: 4
## AddOnVersion: 4
## APIVersion: 100025 100026

HideMe.lua
src/NoZoom.lua

src/NoZoom.lua

local ZO_MapPanAndZoom = {MAX_OVER_ZOOM = 0.589}
function ZO_MapPanAndZoom:CanMapZoom()
    return GetMapContentType() ~= MAP_CONTENT_DUNGEON
end
function ZO_MapPanAndZoom:ComputeMinZoom()
    return 1
end
function ZO_MapPanAndZoom:ComputeMaxZoom()
    if(not self:CanMapZoom()) then
        return 1
    else
        local numTiles = GetMapNumTiles()
        local tilePixelWidth = ZO_WorldMapContainer1:GetTextureFileDimensions()
        local totalPixels = numTiles * tilePixelWidth
        local mapAreaUIUnits = ZO_WorldMapScroll:GetHeight()
        local mapAreaPixels = mapAreaUIUnits * GetUIGlobalScale()
        local maxZoomToStayBelowNative = totalPixels / mapAreaPixels
        return zo_max(maxZoomToStayBelowNative * ZO_MapPanAndZoom.MAX_OVER_ZOOM, 0.589)
    end
end
 
local function ChangeZoomLimit()
    local FACTOR = 1
    local minZoom = ZO_MapPanAndZoom:ComputeMinZoom()
    local maxZoom = ZO_MapPanAndZoom:ComputeMaxZoom()
    ZO_WorldMap_SetCustomZoomLevels(minZoom, maxZoom * FACTOR)
end
 
local orig_ZO_WorldMap_ShowWorldMap = ZO_WorldMap_ShowWorldMap
ZO_WorldMap_ShowWorldMap = function()
    orig_ZO_WorldMap_ShowWorldMap()
    ZO_WorldMap_ClearCustomZoomLevels()
    zo_callLater(ChangeZoomLimit, 1)
end
 
local orig_ZO_WorldMap_UpdateMap = ZO_WorldMap_UpdateMap
ZO_WorldMap_UpdateMap = function()
    orig_ZO_WorldMap_UpdateMap()
    ZO_WorldMap_ClearCustomZoomLevels()
    zo_callLater(ChangeZoomLimit, 1)
end

HideMe.lua

HideMe = {}
HideMe.name = "HideMe"
 
local function Addon_Loaded(eventCode, addOnName)
    if (addOnName == HideMe.name) then
        --Hide player pin on map
        ZO_MapPin0:SetHidden(true)
        ZO_MapPin0.SetHidden = function()
        end
        --Disable "show player on map" keybind
        ZO_PreHook("ZO_WorldMap_PanToPlayer", function()
            return true
        end
        )
    end
    --Hide map pins in subZones (cities etc.)
    ZO_PreHook("IsMapLocationVisible", function()
        if GetParentZoneId ~= nil then
            local zoneId, subZoneId
            zoneId = GetParentZoneId ()
            if zoneId ~= nil then
                local zoneIndex = GetUnitZoneIndex("player")
                if zoneIndex ~= nil then
                    subZoneId = GetZoneId(zoneIndex)
                    if subZoneId ~= nil then return true end
                end
            end
        end
        return false
    end)
end
EVENT_MANAGER:RegisterForEvent(HideMe.name, EVENT_ADD_ON_LOADED, Addon_Loaded)