feat: re-merge (#2)

Reviewed-on: https://codeberg.org/nhcarrigan/tingle-bot/pulls/2
Co-authored-by: Naomi Carrigan <commits@nhcarrigan.com>
Co-committed-by: Naomi Carrigan <commits@nhcarrigan.com>

src/modules/images/generateBanner.ts

@@ -26,9 +26,17 @@ export const generateBanner = async(
       ? "Blight Rain"
       : forecast.precipitation?.name;
 
-  const overlayPath = getOverlayImage(overlayQuery ?? null);
+  if (overlayQuery === undefined) {
+    return background;
+  }
 
-  const overlay = await overlayImages(background.filePath, overlayPath ?? "");
+  const overlayPath = getOverlayImage(overlayQuery);
+
+  if (overlayPath === null) {
+    return background;
+  }
+
+  const overlay = await overlayImages(background.filePath, overlayPath);
 
   return overlay;
 };