essais non fructueux de pré-charger les tiles au zoom sur les étapes

web/themes/custom/caravane/assets/js/libs/leaflet.edgebuffer.js

@@ -0,0 +1,23 @@
+export default function (L) {
+    L.EdgeBuffer = {
+      previousMethods: {
+        getTiledPixelBounds: L.GridLayer.prototype._getTiledPixelBounds,
+      }
+    };
+  
+    L.GridLayer.include({
+      _getTiledPixelBounds: function (center, zoom, tileZoom) {
+        var pixelBounds = L.EdgeBuffer.previousMethods.getTiledPixelBounds.call(this, center, zoom, tileZoom);
+  
+        var edgeBufferTiles = this.options.edgeBufferTiles ?? 1;
+        if (edgeBufferTiles > 0) {
+          var pixelEdgeBuffer = L.GridLayer.prototype.getTileSize.call(this).multiplyBy(edgeBufferTiles);
+          pixelBounds = new L.Bounds(pixelBounds.min.subtract(pixelEdgeBuffer), pixelBounds.max.add(pixelEdgeBuffer));
+        }
+        return pixelBounds;
+      }
+    });
+  
+    return L;
+  }
+