diff --git a/modules/default/calendar/debug.js b/modules/default/calendar/debug.js
index cdcbb024..f01bcc0d 100644
--- a/modules/default/calendar/debug.js
+++ b/modules/default/calendar/debug.js
@@ -5,24 +5,23 @@
  * By Michael Teeuw https://michaelteeuw.nl
  * MIT Licensed.
  */
+const CalendarFetcher = require("./calendarfetcher.js");
 
-var CalendarFetcher = require("./calendarfetcher.js");
-
-var url = "https://calendar.google.com/calendar/ical/pkm1t2uedjbp0uvq1o7oj1jouo%40group.calendar.google.com/private-08ba559f89eec70dd74bbd887d0a3598/basic.ics"; // Standard test URL
-// var url = "https://www.googleapis.com/calendar/v3/calendars/primary/events/"; // URL for Bearer auth (must be configured  in Google OAuth2 first)
-var fetchInterval = 60 * 60 * 1000;
-var maximumEntries = 10;
-var maximumNumberOfDays = 365;
-var user = "magicmirror";
-var pass = "MyStrongPass";
-var auth = {
+const url = "https://calendar.google.com/calendar/ical/pkm1t2uedjbp0uvq1o7oj1jouo%40group.calendar.google.com/private-08ba559f89eec70dd74bbd887d0a3598/basic.ics"; // Standard test URL
+//const url = "https://www.googleapis.com/calendar/v3/calendars/primary/events/"; // URL for Bearer auth (must be configured  in Google OAuth2 first)
+const fetchInterval = 60 * 60 * 1000;
+const maximumEntries = 10;
+const maximumNumberOfDays = 365;
+const user = "magicmirror";
+const pass = "MyStrongPass";
+const auth = {
 	user: user,
 	pass: pass
 };
 
 console.log("Create fetcher ...");
 
-var fetcher = new CalendarFetcher(url, fetchInterval, [], maximumEntries, maximumNumberOfDays, auth);
+const fetcher = new CalendarFetcher(url, fetchInterval, [], maximumEntries, maximumNumberOfDays, auth);
 
 fetcher.onReceive(function (fetcher) {
 	console.log(fetcher.events());
diff --git a/package.json b/package.json
index b20ab60d..741d1d2e 100644
--- a/package.json
+++ b/package.json
@@ -15,6 +15,7 @@
 		"test:prettier": "prettier --check **/*.{js,css,json,md,yml}",
 		"test:js": "eslint *.js js/**/*.js modules/default/**/*.js clientonly/*.js serveronly/*.js translations/*.js vendor/*.js tests/**/*.js config/* --config .eslintrc.json --quiet",
 		"test:css": "stylelint css/main.css modules/default/**/*.css --config .stylelintrc.json",
+		"test:calendar": "node ./modules/default/calendar/debug.js",
 		"config:check": "node js/check_config.js",
 		"lint:prettier": "prettier --write **/*.{js,css,json,md,yml}",
 		"lint:js": "eslint *.js js/**/*.js modules/default/**/*.js clientonly/*.js serveronly/*.js translations/*.js vendor/*.js tests/**/*.js config/* --config .eslintrc.json --fix",