chore(): bump node build version to node LTS, fix export, add simple portfolio margin nodejs examples

Author: tiagosiebler

.nvmrc

@@ -1 +1 @@
-v20.9.0
+v22.11.0

examples/rest-portfoliomargin-private.ts

@@ -0,0 +1,36 @@
+import { PortfolioClient } from '../src/index';
+
+// or
+// import { PortfolioClient } from 'binance';
+
+const key = process.env.API_KEY_COM || 'APIKEY';
+const secret = process.env.API_SECRET_COM || 'APISECRET';
+
+const client = new PortfolioClient({
+  api_key: key,
+  api_secret: secret,
+  beautifyResponses: true,
+});
+
+(async () => {
+  try {
+    const res = await client.getBalance();
+    console.log('res', res);
+
+    const listenKey = await client.getPMUserDataListenKey();
+    console.log('listen key res: ', listenKey);
+
+    // const newOrderRes = await client.submitNewUMOrder({
+    //   symbol: 'BTCUSDT',
+    //   side: 'BUY',
+    //   type: 'MARKET',
+    //   quantity: '10',
+    // });
+
+    // console.log('new order res: ', newOrderRes);
+
+    // console.log('merged: ', arrayData);
+  } catch (e) {
+    console.error('request failed: ', e);
+  }
+})();

examples/rest-portfoliomargin-public.ts

@@ -0,0 +1,20 @@
+import { PortfolioClient } from '../src/index';
+
+// or
+// import { USDMClient } from 'binance';
+
+const client = new PortfolioClient({
+  beautifyResponses: true,
+});
+
+(async () => {
+  try {
+    // const serverTime = await client.getServerTime();
+    // console.log('serverTime: ', serverTime);
+
+    const res = await client.testConnectivity();
+    console.log('res', res);
+  } catch (e) {
+    console.error('request failed: ', e);
+  }
+})();