use custom date reviver for date objects

Author: felipecsl

package.json

@@ -1,6 +1,6 @@
 {
   "name": "tda-wsjson-client",
-  "version": "0.10.1",
+  "version": "0.10.2",
   "description": "WebSocket client for the TD Ameritrade wsjson API",
   "main": "dist/web.bundle.js",
   "types": "dist/web.d.ts",

src/client/wsJsonClientProxy.ts

@@ -98,7 +98,9 @@ export default class WsJsonClientProxy implements WsJsonClient {
     const { buffer, socket } = this;
     return new Promise((resolve, reject) => {
       socket.onmessage = ({ data }) => {
-        buffer.emit(JSON.parse(data as string) as ProxiedResponse);
+        // make sure date objects are reconstructed across the wire
+        const parsedMsg = JSON.parse(data as string, dateReviver);
+        buffer.emit(parsedMsg as ProxiedResponse);
       };
       socket.onopen = () => {
         logger("proxy ws connection opened");
@@ -271,3 +273,14 @@ export default class WsJsonClientProxy implements WsJsonClient {
       .map(({ response }) => response as T);
   }
 }
+
+function dateReviver(_: string, value: any): any {
+  if (typeof value === "string") {
+    // Regular expression to check if the string matches ISO 8601 date format
+    const isoDateRegex = /^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}.\d{3}Z$/;
+    if (isoDateRegex.test(value)) {
+      return new Date(value);
+    }
+  }
+  return value; // return the value unchanged if not a date string
+}

src/example/testApp.ts

@@ -177,9 +177,10 @@ async function run() {
   const { client } = await authClient.authenticateWithRetry(token);
   const app = new TestApp(client);
   await Promise.all([
-    app.quotes(["ABNB", "UBER"]),
-    app.accountPositions(),
+    // app.quotes(["ABNB", "UBER"]),
+    // app.accountPositions(),
     app.optionChain("TSLA"),
+    // app.optionChainQuotes("AAPL"),
   ]);
 }