Merge pull request #595 from NYPL/SCC-5041-fix-alarm-noise

[SCC-5041] Add checks to address common errors

Author: yossariano

lib/annotated-marc-serializer.js

@@ -322,7 +322,7 @@ AnnotatedMarcSerializer.addStatementsForVarFieldForRule = function (doc, bib, va
             .pop()
         }
       })
-      .filter((parallel) => parallelNumbers.some((parallelNumber) => parallel.linkingValue.indexOf(parallelNumber) === 4))
+      .filter((parallel) => parallelNumbers.some((parallelNumber) => parallel.linkingValue?.indexOf(parallelNumber) === 4))
       .map((parallel) => parallel.field)
 
     if (matchingParallels.length > 0) {

lib/jsonld_serializers.js

@@ -490,7 +490,9 @@ class AggregationsSerializer extends JsonLdListSerializer {
         .map(([id, agg]) => Object.assign({ id }, agg))
         .map((agg) => AggregationSerializer.serialize(agg, options))
     )
-    return (new AggregationsSerializer(items, Object.assign({ extraRootProperties: { totalResults: resp.hits.total } }, options))).format()
+
+    const hits = resp.hits?.total ?? 0
+    return (new AggregationsSerializer(items, Object.assign({ extraRootProperties: { totalResults: hits } }, options))).format()
   }
 }