From 09985c4811c24991a511eaaee9bec018d2992a73 Mon Sep 17 00:00:00 2001
From: vxksf <ksf@vortx.com.br>
Date: Wed, 18 Aug 2021 17:43:09 -0300
Subject: [PATCH] fix the absence of circular structure treatment

---
 src/step.js | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/src/step.js b/src/step.js
index b0f11d4..88d9caf 100644
--- a/src/step.js
+++ b/src/step.js
@@ -71,19 +71,32 @@ class Step {
             return Ok(ret)
         }
 
+        let circularStructureCache = []
+        const _circularStructureHandling = (key, value) => {
+            if (typeof value === 'object' && value !== null) {
+                if (circularStructureCache.includes(value)) return
+                circularStructureCache.push(value)
+            }
+            return value
+        }
+
         let ret = undefined
         this._auditTrail.description = this.description
         this._auditTrail.return = ""
         
         ret = await _runFunction()
-        if (ret !== undefined) this._auditTrail.return = JSON.parse(JSON.stringify(ret))
+        if (ret !== undefined) { 
+            this._auditTrail.return = JSON.parse(JSON.stringify(ret, _circularStructureHandling))
+            circularStructureCache = []
+        }
+
         if (ret) {
             this._auditTrail.elapsedTime = process.hrtime.bigint() - startTime
             return ret
         }
 
         ret = await _runNestedSteps()
-        this._auditTrail.return = JSON.parse(JSON.stringify(ret))
+        this._auditTrail.return = JSON.parse(JSON.stringify(ret, _circularStructureHandling))
         this._auditTrail.elapsedTime = process.hrtime.bigint() - startTime
         return ret
     }