fix(uilts): able to use setDeepValue on undefined/empty object (#732)

packages/utils/src/utils.spec.ts

@@ -391,8 +391,14 @@ describe('Service/Utilies', () => {
       expect(obj).toEqual({ id: 76, user: { firstName: 'John', lastName: 'Doe', addresses: [{ number: 123, street: 'Broadway' }, { number: 234, street: 'Beverly' }] } });
     });
 
+    it('should be able to set a property even when its original value is undefined', () => {
+      obj = {};
+      setDeepValue(obj, 'user.name', 'John');
+      expect(obj.user.name).toBe('John');
+    });
+
     it('should be able to update a property of an array inside a complex object', () => {
-      obj = { id: 1, user: { firstName: 'John', lastName: 'Doe', addresses: [{ street: 'Broadway' }, { number: 234, street: 'Beverly' }] } };
+      obj = { id: 1, user: { firstName: 'John', lastName: 'Doe', addresses: [{ number: null, street: 'Broadway' }, { number: 234, street: 'Beverly' }] } };
       setDeepValue(obj, 'user.addresses.0.number', 111);
       expect(obj.user.addresses[0].number).toBe(111);
       expect(obj).toEqual({ id: 1, user: { firstName: 'John', lastName: 'Doe', addresses: [{ number: 111, street: 'Broadway' }, { number: 234, street: 'Beverly' }] } });

packages/utils/src/utils.ts

@@ -170,7 +170,10 @@ export function isObject(item: any) {
   return (item && typeof item === 'object' && !Array.isArray(item));
 }
 
-/** Check if a value has any data (undefined, null or empty string will return false... but false boolean is consider as valid data) */
+/**
+ * Check if a value has any data (undefined, null or empty string will return False...)
+ * NOTE: a `false` boolean is consider as having data so it will return True
+ */
 export function hasData(value: any): boolean {
   return value !== undefined && value !== null && value !== '';
 }
@@ -216,11 +219,11 @@ export function setDeepValue<T = unknown>(obj: T, path: string | string[], value
   }
 
   if (path.length > 1) {
-    const e = path.shift();
+    const e = path.shift() as keyof T;
     if (obj && e !== undefined) {
       setDeepValue(
-        (obj)[e as keyof T] = (Array.isArray(obj[e as keyof T]) || Object.prototype.toString.call((obj)[e as keyof T]) === '[object Object]')
-          ? (obj)[e as keyof T]
+        (obj)[e] = (hasData(obj[e]) && (Array.isArray(obj[e]) || Object.prototype.toString.call((obj)[e]) === '[object Object]'))
+          ? (obj)[e]
           : {} as T[keyof T],
         path,
         value