Nevermind, I got it. Here is the sample
@IBOutlet weak var playVideoWebView: WKWebView!
override func viewDidLoad() {
super.viewDidLoad()
let interactiveEmbedCode = “”"
<div id="player"></div>
<script type="text/javascript">
var options = {
width: "1280",
height: "720",
channel: "dallas",
video: "v106400740",
playsinline: "true"
};
var player = new Twitch.Player("player", options);
player.setVolume(0.5);
</script>
"""
playVideoWebView.loadHTMLString(interactiveEmbedCode, baseURL: nil)
}