From 79dacba6d607e2869d40c2ca54266280ae95a738 Mon Sep 17 00:00:00 2001
From: MaysWind <i@mayswind.net>
Date: Sun, 31 Jan 2021 21:38:35 +0800
Subject: [PATCH] fix shifting date range bug when date range crosses one year

---
 src/lib/utils.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lib/utils.js b/src/lib/utils.js
index 44c42e49..c7290512 100644
--- a/src/lib/utils.js
+++ b/src/lib/utils.js
@@ -156,7 +156,7 @@ function getShiftedDateRange(minTime, maxTime, scale) {
     const lastDayOfMonth = maxDateTime.clone().endOf('month');
 
     if (firstDayOfMonth.unix() === minDateTime.unix() && lastDayOfMonth.unix() === maxDateTime.unix()) {
-        const months = getMonth(maxDateTime) - getMonth(minDateTime) + 1;
+        const months = getYear(maxDateTime) * 12 + getMonth(maxDateTime) - getYear(minDateTime) * 12 - getMonth(minDateTime) + 1;
         const newMinDateTime = minDateTime.add(months * scale, 'months');
         const newMaxDateTime = newMinDateTime.clone().add(months, 'months').subtract(1, 'seconds');