fix condition syntax

lib/layer/styleParser.mjs

@@ -102,22 +102,24 @@ export default function styleParser(layer) {
     // Assign the first key from themes object as theme string property if undefined.
     layer.style.theme ??= Object.keys(layer.style.themes)[0]
 
-    // Assign theme object from themes object if not already an object.
-    layer.style.theme = typeof layer.style.theme === 'object'
-      ? layer.style.theme
-      : layer.style.themes[layer.style.theme];
+    // Assign theme property from themes object if string.
+    if (typeof layer.style.theme === 'string') {
+
+      layer.style.theme = layer.style.themes[layer.style.theme]
+    }
   }
 
   // Handle multiple hovers in layer style.
   if (layer.style?.hovers) {
 
     // Assign the first key from hovers object as hover string property if undefined.
     layer.style.hover ??= Object.keys(layer.style.hovers)[0]
-
-    // Assign hover object from hovers object if not already an object.
-    typeof layer.style.hover === 'object'
-      ? layer.style.hover
-      : layer.style.hovers[layer.style.hover];
+
+    // Assign hover property from hovers object if string.
+    if (typeof layer.style.hover === 'string') {
+
+      layer.style.hover = layer.style.hovers[layer.style.hover]
+    }
   }
 
   // Set default featureHover method if not provided.
@@ -130,11 +132,13 @@ export default function styleParser(layer) {
 
     // Assign the first key from labels object as label string property if undefined.
     layer.style.label ??= Object.keys(layer.style.labels)[0]
-
-    // Assign label object from labels object if not already an object.
-    layer.style.label = typeof layer.style.label === 'object'
-      ? layer.style.label
-      : layer.style.labels[layer.style.label];
+
+
+    // Assign label property from labels object if string.
+    if (typeof layer.style.label === 'string') {
+
+      layer.style.label = layer.style.labels[layer.style.label]
+    }
   }
 }