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src/lib/components/Battle/FieldEffectIndicator.svelte

@@ -2,6 +2,12 @@
   export let fieldEffects: Array<{ effect: string; turnsRemaining?: number; side?: string }> = [];
   
   function getFieldEffectColor(effect: string): string {
+    // Defensive check: ensure effect is a string
+    if (typeof effect !== 'string') {
+      console.warn('FieldEffectIndicator: effect is not a string:', effect);
+      return '#868e96';
+    }
+    
     if (effect.includes('weather')) return '#4dabf7';
     if (effect.includes('terrain')) return '#51cf66';
     if (effect.includes('hazard')) return '#ff6b6b';
@@ -9,6 +15,12 @@
   }
   
   function getFieldEffectIcon(effect: string): string {
+    // Defensive check: ensure effect is a string
+    if (typeof effect !== 'string') {
+      console.warn('FieldEffectIndicator: effect is not a string:', effect);
+      return '🌀';
+    }
+    
     if (effect.includes('storm')) return '⛈️';
     if (effect.includes('rain')) return '🌧️';
     if (effect.includes('sun')) return '☀️';