From 499a28e4c01db4b0b0a7e9203ee7e59aa36307db Mon Sep 17 00:00:00 2001
From: Samuel Rowe <samuelrowe1999@gmail.com>
Date: Fri, 29 Jul 2022 21:31:00 +0530
Subject: [PATCH] feat(frontend): created `pruneObject` and `pruneArray`
 utilities

---
 services/frontend/src/utils/forms.ts | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/services/frontend/src/utils/forms.ts b/services/frontend/src/utils/forms.ts
index 931a359..9704779 100644
--- a/services/frontend/src/utils/forms.ts
+++ b/services/frontend/src/utils/forms.ts
@@ -1,3 +1,5 @@
+import lodash from "lodash";
+
 export const checkArray = <T>(array: any, name: string): T => {
   if (!Array.isArray(array)) {
     throw new Error(
@@ -6,3 +8,19 @@ export const checkArray = <T>(array: any, name: string): T => {
   }
   return array as unknown as T;
 };
+
+export const pruneArray = <T>(array: (T | undefined)[]): T[] | undefined => {
+  const result = array.filter(Boolean);
+  if (array.length === 0) {
+    return undefined;
+  }
+  return result as T[];
+};
+
+export const pruneObject = <T>(object: T): unknown | undefined => {
+  const result = lodash.pickBy(object ?? {}, (value) => value !== undefined);
+  if (Object.keys(result).length === 0) {
+    return undefined;
+  }
+  return result as unknown;
+};