Check layer format in layer decorator

lib/layer/decorate.mjs

@@ -32,8 +32,14 @@ The layer decorator method create mapp-layer typedef object from a json-layer.
 @returns {layer} Decorated Mapp Layer.
 */
 export default async function decorate(layer) {
+  // Check layer format.
+  if (!Object.hasOwn(mapp.layer.formats, layer.format)) {
+    console.warn(`Layer: ${layer.key}; ${layer.format} format unavailable.`);
+    return;
+  }
+
   // Decorate layer format methods.
-  await mapp.layer.formats[layer.format]?.(layer);
+  await mapp.layer.formats[layer.format](layer);
 
   // If layer does not exist, return.
   if (!layer.L) return;

lib/mapview/addLayer.mjs

@@ -68,12 +68,6 @@ export default async function addLayer(layers) {
     // Assign default key if not explicit in layer JSON.
     layer.key ??= `${layer.format}-${i}`;
 
-    // Check the layer format.
-    if (!mapp.layer.formats[layer.format]) {
-      console.error(`Layer: ${layer.key}; Format: ${layer.format} is unknown.`);
-      continue;
-    }
-
     await mapp.layer.decorate(layer);
 
     if (!layer.L) continue;

lib/ui/locations/entries/layer.mjs

@@ -67,7 +67,7 @@ export default function layer(entry) {
 
   entry.zIndex ??= entry.location.layer.zIndex++;
 
-  entry.show ?? decorateLayer(entry);
+  decorateLayer(entry);
 
   entry.panel ??= mapp.utils.html.node`<div class="entry-layer">`;
 
@@ -123,8 +123,14 @@ The infoj layer entry provided as argument will be decorated to become a mapp la
 @param {infoj-entry} entry type:layer entry.
 */
 async function decorateLayer(entry) {
+  // The entry [layer] has already been decorated.
+  if (entry.L) return;
+
   await mapp.layer.decorate(entry);
 
+  // The entry [layer] could not be decorated.
+  if (!entry.L) return;
+
   entry.key += `-${ol.util.getUid(entry.L)}`;
 
   entry.L.set('key', entry.key);