Improve typing, reindent.

static/sfu.js

@@ -758,9 +758,10 @@ async function addLocalMedia(id, disableVideo) {
     let settings = getSettings();
 
     let audio = settings.audio ? {deviceId: settings.audio} : false;
-    let video = false;
-    if (!disableVideo)
-        video = settings.video ? {deviceId: settings.video} : false;
+    let video =
+        disableVideo ? false :
+        settings.video ? {deviceId: settings.video} :
+        false;
 
     if(audio) {
         if(settings.studioMode) {
@@ -1004,13 +1005,13 @@ function setMedia(c, isUp) {
 
     let top_controls = document.getElementById('topcontrols-' + c.id);
     if(template && !top_controls) {
-        top_controls = top_template.cloneNode(true);
+        top_controls = /** @type{HTMLElement} */(top_template.cloneNode(true));
         top_controls.id = 'topcontrols-' + c.id;
         div.appendChild(top_controls);
     }
     let controls = document.getElementById('controls-' + c.id);
     if(template && !controls) {
-        controls = template.cloneNode(true);
+        controls = /** @type{HTMLElement} */(template.cloneNode(true));
         controls.id = 'controls-' + c.id;
         div.appendChild(controls);
         if(media.muted) {
@@ -1043,7 +1044,9 @@ function setMedia(c, isUp) {
  * @param {HTMLVideoElement} video
  */
 async function videoPIP(video) {
+    /** @ts-ignore */
     if (video.requestPictureInPicture) {
+        /** @ts-ignore */
         await video.requestPictureInPicture();
     } else {
         displayWarning("Video PIP Mode not supported!");