Fixed mutation issue

Author: easeq

package-lock.json

@@ -1,6 +1,6 @@
 {
     "name": "@flipbyte/when-condition",
-    "version": "0.1.1",
+    "version": "0.1.2",
     "description": "Check conditional statements and return true/false",
     "main": "lib/index.js",
     "module": "es/index.js",

package.json

@@ -83,16 +83,17 @@ const when = (conditions, data) => {
         return processRule(conditions, data);
     }
 
-    var type = conditions.shift();
-    var result = conditions.map((condition, index) => {
+    var logicalRule = conditions.slice(0, 1)[0];
+    var comparisonRules = conditions.slice(1);
+    var result = comparisonRules.map((condition, index) => {
         if (isValidCondition(condition)) {
             return when(condition, data)
         }
 
         return processRule(condition, data);
     })
 
-    return processCondition(type, result)
+    return processCondition(logicalRule, result)
 }
 
 export default when;