Coding style consistency

Includes automatic recommended Xcode project file fixes.

ios/jitsi-meet-react.xcodeproj/project.pbxproj

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 				BF96438E1C34FBE100B0BBDF /* VideoToolbox.framework in Frameworks */,
-				146834051AC3E58100842450 /* libReact.a in Frameworks */,
+				901FE90FA5744B5B94DCDC41 /* libKCKeepAwake.a in Frameworks */,
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-				3847F11906B4479A9162628F /* libRNVectorIcons.a in Frameworks */,
-				901FE90FA5744B5B94DCDC41 /* libKCKeepAwake.a in Frameworks */,
+				146834051AC3E58100842450 /* libReact.a in Frameworks */,
 				7FAD39BE09A84D6AB0ABACA8 /* libRNBackgroundTimer.a in Frameworks */,
+				3847F11906B4479A9162628F /* libRNVectorIcons.a in Frameworks */,
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-				22418656B14845609F953A42 /* RNVectorIcons.xcodeproj */,
 				0965153BB98645B4A8B6AA10 /* RNBackgroundTimer.xcodeproj */,
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 			children = (
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 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 820;
+				LastUpgradeCheck = 0820;
 				ORGANIZATIONNAME = Facebook;
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 					ProductGroup = 146834001AC3E56700842450 /* Products */;
 					ProjectRef = 146833FF1AC3E56700842450 /* React.xcodeproj */;
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+		};
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 					"$(SRCROOT)/../node_modules/react-native/React/**",
 					"$(SRCROOT)/../node_modules/react-native/Libraries/LinkingIOS/**",
+					"$(SRCROOT)/../node_modules/react-native-background-timer/ios",
 					"$(SRCROOT)/../node_modules/react-native-keep-awake/ios",
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 					"$(SRCROOT)/../node_modules/react-native/Libraries/LinkingIOS/**",
+					"$(SRCROOT)/../node_modules/react-native-background-timer/ios",
 					"$(SRCROOT)/../node_modules/react-native-keep-awake/ios",
 					"$(SRCROOT)/../node_modules/react-native-vector-icons/RNVectorIconsManager",
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 				);
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 					/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include,
 					"$(SRCROOT)/../node_modules/react-native/React/**",
+					"$(SRCROOT)/../node_modules/react-native-background-timer/ios",
 					"$(SRCROOT)/../node_modules/react-native-keep-awake/ios",
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react/features/base/conference/functions.js

         // XXX The library lib-jitsi-meet may be draconian, for example, when
         // adding one and the same video track multiple times.
         if (conferenceLocalTracks.indexOf(track) === -1) {
-            promises.push(conference.addTrack(track)
-                .catch(err => {
+            promises.push(
+                conference.addTrack(track).catch(err => {
                     _reportError(
                         'Failed to add local track to conference',
                         err);

react/features/base/lib-jitsi-meet/native/polyfills-browser.js

 import BackgroundTimer from 'react-native-background-timer';
+import 'url-polyfill'; // Polyfill for URL constructor
 
 /**
  * Gets the first common prototype of two specified Objects (treating the
 }
 
 (global => {
-
-    // Polyfill for URL constructor
-    require('url-polyfill');
-
     const DOMParser = require('xmldom').DOMParser;
 
     // addEventListener
     if (typeof global.document === 'undefined') {
         const document
             = new DOMParser().parseFromString(
-            /* source */ '<html><head></head><body></body></html>',
-            /* mineType */ 'text/xml');
+                    '<html><head></head><body></body></html>',
+                    'text/xml');
 
         // document.addEventListener
         //
         //
         // Required by:
         // - Strophe
-        if (prototype && typeof prototype.responseXML === 'undefined') {
+        if (prototype && !prototype.hasOwnProperty('responseXML')) {
             Object.defineProperty(prototype, 'responseXML', {
-                configurable: true,
-                enumerable: true,
                 get() {
                     const responseText = this.responseText;
                     let responseXML;
 
                     if (responseText) {
-                        responseXML = new DOMParser()
-                            .parseFromString(responseText);
+                        responseXML
+                            = new DOMParser().parseFromString(
+                                    responseText,
+                                    'text/xml');
                     }
 
                     return responseXML;
 
     // Timers
     //
-    // React Native's timers won't run while the app is in the background,
-    // this is a known limitation. Replace them with a background-friendly
+    // React Native's timers won't run while the app is in the background, this
+    // is a known limitation. Replace them with a background-friendly
     // alternative.
     //
     // Required by:
     // - lib-jitsi-meet
     // - Strophe
-    global.setTimeout = window.setTimeout = BackgroundTimer.setTimeout;
     global.clearTimeout = window.clearTimeout = BackgroundTimer.clearTimeout;
-    global.setInterval = window.setInterval = BackgroundTimer.setInterval;
     global.clearInterval = window.clearInterval = BackgroundTimer.clearInterval;
+    global.setInterval = window.setInterval = BackgroundTimer.setInterval;
+    global.setTimeout = window.setTimeout = BackgroundTimer.setTimeout;
 
 })(global || window || this); // eslint-disable-line no-invalid-this