Fix: Parse new Kalshi WS dollar-string format

lib/kalshi/websocket.js

@@ -6,14 +6,11 @@ const WS_URL = 'wss://api.elections.kalshi.com/trade-api/ws/v2';
 
 function unwrapPacket(packet) {
   if (!packet || typeof packet !== 'object') return { type: null, payload: null };
-
   const type = packet.type || null;
   const meta = { id: packet.id, sid: packet.sid, seq: packet.seq, type };
-
   if (packet.msg && typeof packet.msg === 'object') {
     return { type, payload: { ...meta, ...packet.msg } };
   }
-
   return { type, payload: { ...meta, ...packet } };
 }
 
@@ -26,11 +23,11 @@ export class KalshiWS extends EventEmitter {
     this.reconnectTimer = null;
     this.pingInterval = null;
     this.shouldReconnect = true;
+    this._cmdId = 1;
   }
 
   connect() {
     if (this.ws) this.disconnect();
-
     this.shouldReconnect = true;
 
     const path = '/trade-api/ws/v2';
@@ -60,7 +57,6 @@ export class KalshiWS extends EventEmitter {
       console.log(`[WS] Disconnected (code: ${code}).`);
       this.alive = false;
       this._stopPing();
-
       if (this.shouldReconnect) {
         console.log('[WS] Reconnecting in 3s...');
         this._scheduleReconnect();
@@ -80,14 +76,17 @@ export class KalshiWS extends EventEmitter {
 
   unsubscribeTicker(ticker) {
     if (!ticker) return;
-
     this.subscribedTickers.delete(ticker);
-
     if (this.alive && this.ws?.readyState === WebSocket.OPEN) {
       this.ws.send(JSON.stringify({
-        id: Date.now(),
+        id: this._cmdId++,
         cmd: 'unsubscribe',
-        params: { channels: ['orderbook_delta', 'ticker'], market_tickers: [ticker] }
+        params: { channels: ['orderbook_delta'], market_ticker: ticker }
+      }));
+      this.ws.send(JSON.stringify({
+        id: this._cmdId++,
+        cmd: 'unsubscribe',
+        params: { channels: ['ticker'], market_ticker: ticker }
       }));
     }
   }
@@ -96,23 +95,29 @@ export class KalshiWS extends EventEmitter {
     this.shouldReconnect = false;
     this._stopPing();
     clearTimeout(this.reconnectTimer);
-
     if (this.ws) {
       this.ws.removeAllListeners();
       this.ws.close();
       this.ws = null;
     }
-
     this.alive = false;
   }
 
   _sendSubscribe(ticker) {
     if (!this.ws || this.ws.readyState !== WebSocket.OPEN) return;
 
+    // Subscribe orderbook_delta (private channel) with market_ticker
     this.ws.send(JSON.stringify({
-      id: Date.now(),
+      id: this._cmdId++,
       cmd: 'subscribe',
-      params: { channels: ['orderbook_delta', 'ticker'], market_tickers: [ticker] }
+      params: { channels: ['orderbook_delta'], market_ticker: ticker }
+    }));
+
+    // Subscribe ticker (public channel) with market_ticker
+    this.ws.send(JSON.stringify({
+      id: this._cmdId++,
+      cmd: 'subscribe',
+      params: { channels: ['ticker'], market_ticker: ticker }
     }));
   }
 
@@ -130,16 +135,17 @@ export class KalshiWS extends EventEmitter {
       return;
     }
 
-    if (type === 'subscribed') {
+    if (type === 'subscribed' || type === 'ok') {
-      const channel = payload.channel || payload.channels || 'unknown';
+      console.log(`[WS] ${type}:`, JSON.stringify(payload).slice(0, 200));
-      const text = Array.isArray(channel) ? channel.join(', ') : channel;
+    }
-      console.log(`[WS] Subscribed to: ${text}`);
+
+    if (type === 'error') {
+      console.error('[WS] Server error:', JSON.stringify(payload).slice(0, 300));
     }
   }
 
   _startPing() {
     this._stopPing();
-
     this.pingInterval = setInterval(() => {
       if (this.alive && this.ws?.readyState === WebSocket.OPEN) this.ws.ping();
     }, 15000);