fix(FEC-7317): check if VTTCue and TextTrackCue are not undefined (#137)

kaltura · Oct 19, 2017 · 604f7a6 · 604f7a6
1 parent 85ad548
commit 604f7a6
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/engines/html5/html5.js b/src/engines/html5/html5.js
@@ -770,9 +770,9 @@ export default class Html5 extends FakeEventTarget implements IEngine {
     textTrack.mode = 'hidden';
     for (let cue of textTrack.activeCues) {
       //Normalize cues to be of type of VTT model
-      if (cue instanceof window.VTTCue) {
+      if (window.VTTCue && cue instanceof window.VTTCue) {
         activeCues.push(cue);
-      } else if (cue instanceof window.TextTrackCue) {
+      } else if (window.TextTrackCue && cue instanceof window.TextTrackCue) {
         activeCues.push(new Cue(cue.startTime, cue.endTime, cue.text));
       }
     }