fix: Unexpected TypeError in GatewayManager.requestMembers (#4197)

* fix: Unexpected TypeError in `GatewayManager.requestMembers` debug message

closes #4196

* refactor: prefer JSON.stringify replacer parameter when serializing

* Order functions in utils.ts

packages/utils/src/utils.ts

@@ -14,3 +14,14 @@ export async function delay(ms: number): Promise<void> {
 export function hasProperty<T extends {}, Y extends PropertyKey = string>(obj: T, prop: Y): obj is T & Record<Y, unknown> {
   return obj.hasOwnProperty(prop)
 }
+
+/** Convert `JSON.stringify`-unserializable record values for debugging purposes. */
+export function jsonSafeReplacer(_key: string, value: unknown): unknown {
+  switch (typeof value) {
+    case 'bigint':
+      // Bigints are unserializable by `JSON.stringify`.
+      return String(value)
+    default: // Any other unhandled type that isn't supposed to require conversion.
+      return value
+  }
+}