Improved reactor registration

src/helper/childRegistrationUtils.js

@@ -234,18 +234,20 @@ class ChildRegistrationUtils {
       return;
     }
 
-    // this is poor code, it should be fixed at some point
     if (this.mainClass?.upstreamReactor){
       this.mainClass.upstreamReactor = reactor; // Add reactor to the main class
-    } else {
+      this.logger.info(`Upstream reactor registered successfully.`);
+    }
+
+    if (this.mainClass?.reactors) {
       if (positionVsParent == "downstream") {
         this.mainClass.reactors[0] = reactor;
       }
       if (positionVsParent == "upstream") {
         this.mainClass.reactors[1] = reactor;
       }
-    }
       this.logger.info(`Reactor registered successfully.`);
+    }
 
     reactor.emitter.on("stateChange", (data) => {
       this.mainClass.logger.debug(`State change of upstream reactor detected.`);