add lik.Objectmap.isEmpty()

ts/lik.objectmap.ts

@@ -56,6 +56,17 @@ export class Objectmap<T> {
         }
     }
 
+    /**
+     * finds a specific element and then removes it
+     */
+    findOneAndRemove(findFunction): T {
+        let foundElement = this.find(findFunction)
+        if (foundElement) {
+            this.remove(foundElement)
+        }
+        return foundElement
+    }
+
     /**
      * run function for each item in Objectmap
      */
@@ -70,17 +81,6 @@ export class Objectmap<T> {
         return this.objectArray.shift()
     }
 
-    /**
-     * finds a specific element and then removes it
-     */
-    findOneAndRemove(findFunction): T {
-        let foundElement = this.find(findFunction)
-        if (foundElement) {
-            this.remove(foundElement)
-        }
-        return foundElement
-    }
-
     /**
      * returns a cloned array of all the objects currently in the Objectmap
      */
@@ -88,6 +88,17 @@ export class Objectmap<T> {
         return plugins.lodash.cloneDeep(this.objectArray)
     }
 
+    /**
+     * check if Objectmap ist empty
+     */
+    isEmpty(): boolean {
+        if (this.objectArray.length === 0) {
+            return true
+        } else {
+            return false
+        }
+    }
+
     /**
      * remove object from Objectmap
      */