From a4e97d4606944a9b9e4bb11e4e0e8737a511d019 Mon Sep 17 00:00:00 2001
From: Deepesh Garg <42651287+deepeshgarg007@users.noreply.github.com>
Date: Thu, 13 Jun 2019 10:42:14 +0530
Subject: [PATCH] fix: Do not reduce for empty arrays (#7679)

---
 frappe/public/js/frappe/misc/utils.js | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/frappe/public/js/frappe/misc/utils.js b/frappe/public/js/frappe/misc/utils.js
index 76cc71c73b..6e180cfcbc 100644
--- a/frappe/public/js/frappe/misc/utils.js
+++ b/frappe/public/js/frappe/misc/utils.js
@@ -660,13 +660,18 @@ Object.assign(frappe.utils, {
 	},
 
 	report_column_total: function(values, column, type) {
-		if (column.column.fieldtype == "Percent" || type === "mean") {
-			return values.reduce((a, b) => a + flt(b)) / values.length;
-		} else if (column.column.fieldtype == "Int") {
-			return values.reduce((a, b) => a + cint(b));
-		} else if (frappe.model.is_numeric_field(column.column.fieldtype)) {
-			return values.reduce((a, b) => a + flt(b));
-		} else {
+		if (values.length > 0) {
+			if (column.column.fieldtype == "Percent" || type === "mean") {
+				return values.reduce((a, b) => a + flt(b)) / values.length;
+			} else if (column.column.fieldtype == "Int") {
+				return values.reduce((a, b) => a + cint(b));
+			} else if (frappe.model.is_numeric_field(column.column.fieldtype)) {
+				return values.reduce((a, b) => a + flt(b));
+			} else {
+				return null;
+			}
+		}
+		else {
 			return null;
 		}
 	},