Merge pull request #320 from ar-io/prune-tags-fix

fix(tags): prune out empty tags

src/utils/arweave.ts

@@ -27,14 +27,20 @@ export function isBlockHeight(height: string | number): height is BlockHeight {
   return height !== undefined && !isNaN(parseInt(height.toString()));
 }
 
+/**
+ * Prune tags that are undefined or empty.
+ * @param tags - The tags to prune.
+ * @returns The pruned tags.
+ */
 export const pruneTags = (
   tags: { name: string; value: string | undefined }[],
 ): { name: string; value: string }[] => {
   return tags.filter(
     (tag: {
       name: string;
       value: string | undefined;
-    }): tag is { name: string; value: string } => tag.value !== undefined,
+    }): tag is { name: string; value: string } =>
+      tag.value !== undefined && tag.value !== '',
   );
 };