From 22e5489c2ef70f62892e57f7c73d5a47801eeb06 Mon Sep 17 00:00:00 2001
From: Uzhinskiy Boris <lspci@mail.ru>
Date: Tue, 11 May 2021 19:36:31 +0300
Subject: [PATCH] Pass processing if doc[field] == null (#361)

Pass processing if doc[field] == null
Based on https://github.com/opendistro-for-elasticsearch/kibana-reports/issues/327#issuecomment-796479152
---
 dashboards-reports/server/routes/utils/dataReportHelpers.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dashboards-reports/server/routes/utils/dataReportHelpers.ts b/dashboards-reports/server/routes/utils/dataReportHelpers.ts
index f20acc96..3b56f6ed 100644
--- a/dashboards-reports/server/routes/utils/dataReportHelpers.ts
+++ b/dashboards-reports/server/routes/utils/dataReportHelpers.ts
@@ -235,6 +235,8 @@ function traverse(data, keys, result = {}) {
  */
 function sanitize(doc: any) {
   for (const field in doc) {
+    if (doc[field] == null)
+      continue
     if (
       doc[field].toString().startsWith('+') ||
       (doc[field].toString().startsWith('-') && typeof doc[field] !== "number") ||