diff options
Diffstat (limited to 'src/js/utils.js')
-rw-r--r-- | src/js/utils.js | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/js/utils.js b/src/js/utils.js index aeb5ecd2..36fdaa6e 100644 --- a/src/js/utils.js +++ b/src/js/utils.js @@ -41,7 +41,9 @@ const utils = { return this.instanceof(input, window.TextTrackCue) || this.instanceof(input, window.VTTCue); }, track(input) { - return this.instanceof(input, window.TextTrack) || this.string(input.kind); + return ( + this.instanceof(input, window.TextTrack) || (!this.nullOrUndefined(input) && this.string(input.kind)) + ); }, nullOrUndefined(input) { return input === null || typeof input === 'undefined'; |