From 8bd85269b1eb9fb04931f54f7ded8d16170b25e3 Mon Sep 17 00:00:00 2001
From: Alexander Zobnin <alexanderzobnin@gmail.com>
Date: Mon, 28 Dec 2020 13:13:16 +0300
Subject: [PATCH] Fix parsing item update intervals

---
 src/datasource-zabbix/utils.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/datasource-zabbix/utils.ts b/src/datasource-zabbix/utils.ts
index 05ed03f..f1b9c24 100644
--- a/src/datasource-zabbix/utils.ts
+++ b/src/datasource-zabbix/utils.ts
@@ -250,7 +250,7 @@ export function parseItemInterval(interval: string): number {
 export function normalizeZabbixInterval(interval: string): string {
   const intervalPattern = /(^[\d]+)(y|M|w|d|h|m|s)?/g;
   const parsedInterval = intervalPattern.exec(interval);
-  if (!parsedInterval) {
+  if (!parsedInterval || !interval || (parsedInterval.length > 2 && !parsedInterval[2])) {
     return '';
   }
   return parsedInterval[1] + (parsedInterval.length > 2 ? parsedInterval[2] : 's');