fix: 🐛 clear all initial values when clearing complete store

Clears complete Map of initial values when the store is getting cleared.

Closes: #29

Author: Adrian Riepl

projects/ngneat/forms-manager/src/lib/forms-manager.spec.ts

@@ -1273,6 +1273,11 @@ describe('FormsManager', () => {
       }),
     });
 
+    const addressForm = new FormGroup({
+      zip: new FormControl('12345'),
+      place: new FormControl('Schenectady'),
+    });
+
     it('should get and set initial Value for a control', () => {
       formsManager.setInitialValue('config', 'initial');
 
@@ -1306,6 +1311,26 @@ describe('FormsManager', () => {
     it('should get undefined if no initial Value set', () => {
       expect(formsManager.getInitialValue('other')).toBeUndefined();
     });
+
+    it('should clear initial Value for a group of control', () => {
+      formsManager.upsert('user', userForm, { withInitialValue: true });
+      formsManager.upsert('address', addressForm, { withInitialValue: true });
+
+      formsManager.clear('user');
+
+      expect(formsManager.getInitialValue('user')).toBeUndefined();
+      expect(formsManager.getInitialValue('address')).toBeDefined();
+    });
+
+    it('should clear all initial Values when clearing full store', () => {
+      formsManager.upsert('user', userForm, { withInitialValue: true });
+      formsManager.upsert('address', addressForm, { withInitialValue: true });
+
+      formsManager.clear();
+
+      expect(formsManager.getInitialValue('user')).toBeUndefined();
+      expect(formsManager.getInitialValue('address')).toBeUndefined();
+    });
   });
 
   describe('Debounce', () => {

projects/ngneat/forms-manager/src/lib/forms-manager.ts

@@ -638,8 +638,10 @@ export class NgFormsManager<FormsState = any> {
     return value;
   }
 
-  private removeInitialValue(name: FormKeys<FormsState>) {
-    coerceArray(name).forEach(name => this.initialValues$$.delete(name));
+  private removeInitialValue(name?: FormKeys<FormsState>) {
+    name
+      ? coerceArray(name).forEach(name => this.initialValues$$.delete(name))
+      : this.initialValues$$.clear();
   }
 
   private markDescendantsAsDirty(