# All files / src/utils texttrack-utils.ts

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    export function sendAddTrackEvent (track: TextTrack, videoEl: HTMLMediaElement) {
      let event: Event;
      try {
        event = new Event('addtrack');
      } catch (err) {
        // for IE11
        event = document.createEvent('Event');
        event.initEvent('addtrack', false, false);
      }
      (event as any).track = track;
      videoEl.dispatchEvent(event);
    }

    export function clearCurrentCues (track: TextTrack) {
      if (track && track.cues) {
        while (track.cues.length > 0) {
          track.removeCue(track.cues[0]);
        }
      }
    }