Fix unused locals and better receiver selector available media checking

app/src/bridge/Media.ts

@@ -25,25 +25,14 @@ export interface UpdateMessageData {
 
 
 export default class Media {
-    private sessionId: number;
-    private mediaSessionId: number;
-    private referenceId: string;
-    private session: Session;
     private channel: Channel;
-    private sendMessageCallback: SendMessageCallback;
 
     constructor (
             sessionId: number
           , mediaSessionId: number
-          , referenceId: string
-          , session: Session
-          , sendMessageCallback: SendMessageCallback) {
-
-        this.sessionId = sessionId;
-        this.mediaSessionId = mediaSessionId;
-        this.referenceId = referenceId;
-        this.session = session;
-        this.sendMessageCallback = sendMessageCallback;
+          , private referenceId: string
+          , private session: Session
+          , private sendMessageCallback: SendMessageCallback) {
 
         this.session.createChannel(MEDIA_NAMESPACE);
         this.channel = this.session.channelMap.get(MEDIA_NAMESPACE)!;
@@ -77,11 +66,6 @@ export default class Media {
                 }
 
                 this.sendMessage("shim:/media/update", messageData);
-
-                // Update ID
-                if (status.mediaSessionId) {
-                    this.mediaSessionId = status.mediaSessionId;
-                }
             }
         });
     }

app/src/bridge/Session.ts

@@ -1,7 +1,5 @@
 "use strict";
 
-import uuid from "uuid";
-
 import { Channel, Client } from "castv2";
 
 import { Message

app/src/bridge/StatusListener.ts

@@ -17,10 +17,7 @@ export default class StatusListener extends EventEmitter {
     private clientReceiver?: Channel;
     private clientHeartbeatIntervalId?: NodeJS.Timeout;
 
-    constructor (
-            private host: string
-          , private port: number) {
-
+    constructor (host: string, port: number) {
         super();
 
         this.client = new Client();

app/src/bridge/index.ts

@@ -12,11 +12,9 @@ import Session from "./Session";
 import StatusListener from "./StatusListener";
 
 import { DecodeTransform
-       , EncodeTransform
-       , ResponseTransform } from "../transforms";
+       , EncodeTransform } from "../transforms";
 
-import { MediaStatus
-       , ReceiverStatus } from "./castTypes";
+import { ReceiverStatus } from "./castTypes";
 
 import { Message } from "./types";
 
@@ -146,7 +144,6 @@ async function handleMessage (message: Message) {
 
     switch (message.subject) {
         case "bridge:/getInfo": {
-            const extensionVersion = message.data;
             encodeTransform.write(__applicationVersion);
         }
 

app/src/daemon/index.ts

@@ -3,7 +3,6 @@
 import { spawn } from "child_process";
 import { Readable } from "stream";
 
-import path from "path";
 import WebSocket from "ws";
 
 import { DecodeTransform