Fix Invalid DateTime on event end time being null

source/changelog.txt

@@ -9,6 +9,7 @@
 #### Deprecated
 #### Removed
 #### Fixed
+- Fix Invalid DateTime on event end time being null
 #### Security
 
 ### [0.6.2] - 2021-08-24

source/front/formatter-test.js

@@ -32,7 +32,24 @@ test('#formatDate two dates with short offset name', (t) => {
     end: '2021-04-16T15:30:00Z',
     isShortOffsetNameShown: true,
   })
-  t.is(date, '15/04/2021 10:30 (UTC) - 16/04/2021 15:30 (UTC)')
+  t.is(date, '15/04/2021 10:30 - 16/04/2021 15:30 (UTC)')
+})
+
+test('#formatDate second date is null', (t) => {
+  const date = Formatter.formatDate({
+    start: '2021-04-15T10:30:00Z',
+    end: null,
+  })
+  t.is(date, '15/04/2021 10:30')
+})
+
+test('#formatDate second date is null with short offset name', (t) => {
+  const date = Formatter.formatDate({
+    start: '2021-04-15T10:30:00Z',
+    end: null,
+    isShortOffsetNameShown: true,
+  })
+  t.is(date, '15/04/2021 10:30 (UTC)')
 })
 
 test('#formatLocation both parameters', (t) => {

source/front/formatter.js

@@ -7,21 +7,24 @@ export default class Formatter {
       text: start,
       timeZone,
     })
-    const endDateTime = new DateTimeWrapper({ locale, text: end, timeZone })
     let dateText = startDateTime.getShortDate()
     dateText += ' ' + startDateTime.get24Time()
-    if (!startDateTime.equalsDate(endDateTime)) {
-      if (isShortOffsetNameShown) {
-        dateText += ' (' + startDateTime.getShortOffsetName() + ')'
-      }
-      dateText += ' - '
-      dateText += endDateTime.getShortDate() + ' '
-    } else {
-      dateText += ' - '
+    if (!end && isShortOffsetNameShown) {
+      dateText += ' (' + startDateTime.getShortOffsetName() + ')'
     }
-    dateText += endDateTime.get24Time()
-    if (isShortOffsetNameShown) {
-      dateText += ' (' + endDateTime.getShortOffsetName() + ')'
+
+    if (end) {
+      const endDateTime = new DateTimeWrapper({ locale, text: end, timeZone })
+      if (!startDateTime.equalsDate(endDateTime)) {
+        dateText += ' - '
+        dateText += endDateTime.getShortDate() + ' '
+      } else {
+        dateText += ' - '
+      }
+      dateText += endDateTime.get24Time()
+      if (isShortOffsetNameShown) {
+        dateText += ' (' + endDateTime.getShortOffsetName() + ')'
+      }
     }
     return dateText
   }