---
title: "Important: The map libraries are built from their packages"
manual: "Academic Partners"
version: "main"
permalink: "https://docs.typo3.org/permalink/fgtclb/academic-partners:important-partner-map-libraries-from-npm@main"
source: "Changelog/2.4/Important-PartnerMapLibrariesFromNpm.rst"
rendered: "2026-10-26T19:20:19+00:00"
---

# Important: The map libraries are built from their packages {#important-partner-map-libraries-from-npm}

## Description {#description}

The partner map loads Leaflet 1.9.4 and the marker cluster plugin 1.5.3 as the
classic scripts `Resources/Public/JavaScript/leaflet.js` and
`Resources/Public/JavaScript/markerCluster.js`. They were minified copies
of those releases, edited to publish the global `LeafletObject` instead of
`L` by replacing the text. That edit also changed the path command Leaflet
writes for lines and polygons, so those were not drawn: the area a cluster
covers, which the plugin shows while the pointer rests on a cluster, stayed
invisible.

Both files are now built from the npm packages of the same releases. Their
paths do not change, and they publish what they published before:
`LeafletObject` and `leaflet`, `LeafletObject.noConflict()`, and
`Leaflet.markercluster`.

The popup of a marker is built from elements now. It looks as before, and a
partner title with characters such as `<` or `&` is shown as it is
written.

## Impact {#impact}

-   The area of a cluster is drawn on hover.
-   A template or script that loads the two files, or reads
    `window.LeafletObject`, keeps working unchanged.
-   The stylesheets and the marker icon are unchanged.

## Affected Installations {#affected-installations}

Every installation that renders the partner map plugin. Nothing has to be done
on update.