RDBC-908 Improve robustness of createAgent by refining undici import logic and enhancing variable naming consistency

Author: M4xymm

src/Http/RequestExecutor.ts

@@ -378,28 +378,28 @@ export class RequestExecutor implements IDisposable {
         }
     }
 
-private static async createAgent(options: Agent.Options) {
-    try {
-        let AgentInstance;
-
+    private static async createAgent(options: Agent.Options) {
         try {
-            const undiciModule = await import(importFix("undici"));
-            AgentInstance = undiciModule.Agent;
-        } catch (err) {
-            const undiciModule = await import("undici");
-            AgentInstance = undiciModule.Agent;
-        }
+            let UndiciAgent;
 
-        if (!AgentInstance) {
-            throw new Error("Agent not found in undici module");
-        }
+            try {
+                const undiciModule = await import(importFix("undici"));
+                UndiciAgent = undiciModule.Agent;
+            } catch (err) {
+                const undiciModule = await import("undici");
+                UndiciAgent = undiciModule.Agent;
+            }
 
-        return new AgentInstance(options);
-    } catch (err) {
-        // If we can't import undici - we might be in cloudflare env - simply return no-agent.
-        return null;
+            if (!UndiciAgent) {
+                throw new Error("Agent not found in undici module");
+            }
+
+            return new UndiciAgent(options);
+        } catch (err) {
+            // If we can't import undici - we might be in cloudflare env - simply return no-agent.
+            return null;
+        }
     }
-}
 
     public getTopologyNodes(): ServerNode[] {
         const topology = this.getTopology();