[RN] Simplify the source code

react/features/base/connection/actions.native.js

 export function connect() {
     return (dispatch: Dispatch<*>, getState: Function) => {
         const state = getState();
-        const connectionOptions
-            = state['features/base/connection'].connectionOptions;
-        const room = state['features/base/conference'].room;
+        const { options } = state['features/base/connection'];
+        const { room } = state['features/base/conference'];
         const connection
             = new JitsiMeetJS.JitsiConnection(
-                connectionOptions.appId,
-                connectionOptions.token,
+                options.appId,
+                options.token,
                 {
-                    ...connectionOptions,
+                    ...options,
                     bosh:
-                        connectionOptions.bosh
+                        options.bosh
 
                             // XXX The Jitsi Meet deployments require the room
                             // argument to be in lower case at the time of this

react/features/base/connection/functions.js

         = typeof stateOrGetState === 'function'
             ? stateOrGetState()
             : stateOrGetState;
-    const connection = state['features/base/connection'];
+    const { options } = state['features/base/connection'];
     let domain;
 
     try {
-        domain = connection.connectionOptions.hosts.domain;
+        domain = options.hosts.domain;
     } catch (e) {
-        // XXX The value of connectionOptions or any of the properties
-        // descending from it may be undefined at some point in the execution
-        // (e.g. on start). Instead of multiple checks for the undefined value,
-        // we just wrap it in a try-catch block.
+        // XXX The value of options or any of the properties descending from it
+        // may be undefined at some point in the execution (e.g. on start).
+        // Instead of multiple checks for the undefined value, we just wrap it
+        // in a try-catch block.
     }
 
     return domain;

react/features/base/connection/reducer.js

  * @private
  * @returns {Object}
  */
-function _constructConnectionOptions(domain: string) {
+function _constructOptions(domain: string) {
     // FIXME The HTTPS scheme for the BOSH URL works with meet.jit.si on both
     // mobile & Web. It also works with beta.meet.jit.si on Web. Unfortunately,
     // it doesn't work with beta.meet.jit.si on mobile. Temporarily, use the
         bosh: `${String(boshProtocol)}//${domain}/http-bind`,
         hosts: {
             domain,
-            focus: `focus.${domain}`,
+
+            // Required by:
+            // - lib-jitsi-meet/modules/xmpp/xmpp.js
             muc: `conference.${domain}`
         }
     };
 function _setDomain(state: Object, action: Object) {
     return {
         ...state,
-        connectionOptions: {
-            ...state.connectionOptions,
-            ..._constructConnectionOptions(action.domain)
+        options: {
+            ...state.options,
+            ..._constructOptions(action.domain)
         }
     };
 }