fix(pyth-lazer-sdk): clear timeout on shutdown

Author: keyvankhademi

lazer/sdk/js/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@pythnetwork/pyth-lazer-sdk",
-  "version": "0.3.0",
+  "version": "0.3.1",
   "description": "Pyth Lazer SDK",
   "publishConfig": {
     "access": "public"

lazer/sdk/js/src/socket/websocket-pool.ts

@@ -14,6 +14,7 @@ export class WebSocketPool {
   private messageListeners: ((event: WebSocket.Data) => void)[];
   private allConnectionsDownListeners: (() => void)[];
   private wasAllDown = true;
+  private checkConnectionStatesInterval: NodeJS.Timeout;
 
   private constructor(private readonly logger: Logger = dummyLogger) {
     this.rwsPool = [];
@@ -23,7 +24,7 @@ export class WebSocketPool {
     this.allConnectionsDownListeners = [];
 
     // Start monitoring connection states
-    setInterval(() => {
+    this.checkConnectionStatesInterval = setInterval(() => {
       this.checkConnectionStates();
     }, 100);
   }
@@ -218,5 +219,6 @@ export class WebSocketPool {
     this.subscriptions.clear();
     this.messageListeners = [];
     this.allConnectionsDownListeners = [];
+    clearInterval(this.checkConnectionStatesInterval);
   }
 }