From 2d2913f0c94162766fe838201ecd119694d8b85e Mon Sep 17 00:00:00 2001
From: Noel De Martin <noel@moodle.com>
Date: Mon, 21 Jun 2021 17:33:59 +0200
Subject: [PATCH] MOBILE-3320 DX: Implement withoutUndefined helper

---
 src/core/singletons/object.ts | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/src/core/singletons/object.ts b/src/core/singletons/object.ts
index 0b3dbbc38..b0dd856c3 100644
--- a/src/core/singletons/object.ts
+++ b/src/core/singletons/object.ts
@@ -16,6 +16,10 @@ export type CoreObjectWithoutEmpty<T> = {
     [k in keyof T]: T[k] extends undefined | null ? never : T[k];
 };
 
+export type CoreObjectWithoutUndefined<T> = {
+    [k in keyof T]: T[k] extends undefined ? never : T[k];
+};
+
 /**
  * Singleton with helper functions for objects.
  */
@@ -79,4 +83,24 @@ export class CoreObject {
         return cleanObj as CoreObjectWithoutEmpty<T>;
     }
 
+    /**
+     * Create a new object without undefined values.
+     *
+     * @param obj Objet.
+     * @return New object without undefined values.
+     */
+    static withoutUndefined<T>(obj: T): CoreObjectWithoutUndefined<T> {
+        const cleanObj = {};
+
+        for (const [key, value] of Object.entries(obj)) {
+            if (value === undefined) {
+                continue;
+            }
+
+            cleanObj[key] = value;
+        }
+
+        return cleanObj as CoreObjectWithoutUndefined<T>;
+    }
+
 }