fix: add or update fields in the existing environment or rulesets (#665)

* feat: initial commit

* fix: merge deep code

* fix: lint

* fix: modification conditions

* fix: simplify conditions

---------

Co-authored-by: ls07667 <saxenaluv@johndeere.com>

Author: luvsaxena1

lib/mergeDeep.js

@@ -211,18 +211,19 @@ class MergeDeep {
       }
     }
     const combined = []
-    for (const fields of Object.keys(visited)) {
-      combined.push(visited[fields])
-    }
-    // Elements that are not in target are additions
-    additions[key] = combined.filter(item => {
-      if (this.isObjectNotArray(item)) {
-        return !target.some(targetItem => GET_NAME_USERNAME_PROPERTY(item) === GET_NAME_USERNAME_PROPERTY(targetItem))
-      } else {
-        return !target.includes(item)
+    if (Object.keys(visited).length !== 0) {
+      for (const fields of Object.keys(visited)) {
+        combined.push(visited[fields])
       }
-    })
-
+      // Elements that are not in target are additions
+      additions[key] = combined.filter(item => {
+        if (this.isObjectNotArray(item)) {
+          return !target.some(targetItem => GET_NAME_USERNAME_PROPERTY(item) === GET_NAME_USERNAME_PROPERTY(targetItem))
+        } else {
+          return !target.includes(item)
+        }
+      })
+    }
     // Elements that not in source are deletions
     if (combined.length > 0) {
       // Elements that not in source are deletions
@@ -247,8 +248,21 @@ class MergeDeep {
         this.compareDeep(a, visited[id], additions[additions.length - 1], modifications[modifications.length - 1], deletions[deletions.length - 1])
       }
       // Any addtions for the matching key must be moved to modifications
+      const lastAddition = additions[additions.length - 1]
+      const lastModification = modifications[modifications.length - 1]
+
       if (!this.isEmpty(additions)) {
-        modifications = modifications.concat(additions)
+        for (const key in lastAddition) {
+          if (!lastModification[key]) {
+            lastModification[key] = Array.isArray(lastAddition[key]) ? [] : {}
+          }
+          if (!Array.isArray(lastAddition[key])) {
+            Object.assign(lastModification[key], lastAddition[key])
+          } else {
+            lastModification[key].push(...lastAddition[key])
+          }
+        }
+        additions.length = 0
       }
       // Add name attribute to the modifications to make it look better ; it won't be added otherwise as it would be the same
       if (!this.isEmpty(modifications[modifications.length - 1])) {