Detect <script type="module"> and strict mode

kewisch · Jul 15, 2020 · 04236c7 · 04236c7
1 parent dcfe5a6
commit 04236c7
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/lib/ical/helpers.js b/lib/ical/helpers.js
@@ -4,6 +4,13 @@
  * Portions Copyright (C) Philipp Kewisch, 2011-2015 */
 
 
+if ('noModule' in HTMLScriptElement.prototype) {
+  // In case ical.js is executed in a JavaScript module, strict mode is enabled
+  // and requires a global variable to be assigned explicitly to e.g. the window
+  // object.
+  window.ICAL = {};
+}
+
 /* istanbul ignore next */
 /* jshint ignore:start */
 if (typeof module === 'object') {