style(modeling): simplify event-based-gateway behavior

lib/features/modeling/behavior/EventBasedGatewayBehavior.js

@@ -23,8 +23,7 @@ export default function EventBasedGatewayBehavior(eventBus, modeling) {
       target.incoming.length
     ) {
 
-      existingIncomingConnections
-        .filter(isSequenceFlow)
+      existingIncomingConnections.filter(isSequenceFlow)
         .forEach(function(sequenceFlow) {
           modeling.removeConnection(sequenceFlow);
         });
@@ -40,33 +39,28 @@ export default function EventBasedGatewayBehavior(eventBus, modeling) {
 
     var newShape = event.context.newShape,
         newShapeTargets,
-        newShapeTargetsIncomingSequenceFlows = [];
+        newShapeTargetsIncomingSequenceFlows;
 
     if (!is(newShape, 'bpmn:EventBasedGateway')) {
       return;
     }
 
-    newShapeTargets = newShape.outgoing
-      .filter(isSequenceFlow)
+    newShapeTargets = newShape.outgoing.filter(isSequenceFlow)
       .map(function(sequenceFlow) {
         return sequenceFlow.target;
       });
 
-    newShapeTargets
-      .forEach(function(target) {
-        target.incoming
-          .filter(isSequenceFlow)
-          .forEach(function(sequenceFlow) {
-            newShapeTargetsIncomingSequenceFlows.push(sequenceFlow);
-          });
-      });
+    newShapeTargetsIncomingSequenceFlows = newShapeTargets.reduce(function(sequenceFlows, target) {
+      var incomingSequenceFlows = target.incoming.filter(isSequenceFlow);
 
-    newShapeTargetsIncomingSequenceFlows
-      .forEach(function(sequenceFlow) {
-        if (sequenceFlow.source !== newShape) {
-          modeling.removeConnection(sequenceFlow);
-        }
-      });
+      return sequenceFlows.concat(incomingSequenceFlows);
+    }, []);
+
+    newShapeTargetsIncomingSequenceFlows.forEach(function(sequenceFlow) {
+      if (sequenceFlow.source !== newShape) {
+        modeling.removeConnection(sequenceFlow);
+      }
+    });
   });
 }
 
@@ -77,6 +71,8 @@ EventBasedGatewayBehavior.$inject = [
 
 inherits(EventBasedGatewayBehavior, CommandInterceptor);
 
+
+
 // helpers //////////////////////
 
 function isSequenceFlow(connection) {