Address comments

Author: minggangw

lib/utils.js

@@ -344,13 +344,16 @@ function parseJSONWithBigInt(str) {
   // For older Node.js versions, preprocess the JSON string to convert
   // large integers (outside the safe integer range) to strings before parsing.
   // This replaces the functionality of json-bigint package.
+  // The regex matches integers after: colon (:), comma (,), or open bracket ([)
   const processed = str.replace(
-    /:\s*(-?\d+)(?=\s*[,}\]])/g,
+    /(?:[:,\[])\s*(-?\d+)(?=\s*[,}\]])/g,
     (match, number) => {
       const num = Number(number);
       // If the number is not safe, keep it as a string
       if (!Number.isSafeInteger(num)) {
-        return `: "${number}"`;
+        // Preserve the prefix character (: or , or [)
+        const prefix = match.charAt(0);
+        return `${prefix} "${number}"`;
       }
       return match;
     }