Convert disabledEvents Array to Object (#786)

* Convert disabledEvents Array to Object

Increased performance

* Commit to please Lord Gawdl3y

* Nitpick with chopsticks

src/client/Client.js

@@ -37,6 +37,17 @@ class Client extends EventEmitter {
       this.options.shardCount = Number(process.env.SHARD_COUNT);
     }
 
+    if (!(this.options.disabledEvents instanceof Array)) {
+      throw new TypeError('The disabledEvents client option must be an array.');
+    }
+
+    let disabledEvents = {};
+    for (const event in this.options.disabledEvents) {
+      disabledEvents[event] = true;
+    }
+
+    this.options.disabledEvents = disabledEvents;
+
     /**
      * The REST manager of the client
      * @type {RESTManager}

src/client/websocket/packets/WebSocketPacketManager.js

@@ -84,7 +84,9 @@ class WebSocketPacketManager {
 
     this.setSequence(packet.s);
 
-    if (this.ws.client.options.disabledEvents.includes(packet.t)) return false;
+    if (this.ws.client.options.disabledEvents[packet.t] !== undefined) {
+      return false;
+    }
 
     if (this.ws.status !== Constants.Status.READY) {
       if (BeforeReadyWhitelist.indexOf(packet.t) === -1) {