From e77b6315f34494b9cb7aed41fff8df064ba12bb7 Mon Sep 17 00:00:00 2001
From: Alexey <47535336+dequubi@users.noreply.github.com>
Date: Tue, 3 Dec 2024 12:40:25 +0300
Subject: [PATCH] fix(cdk): optional chaining for tuiControlValue subscription
 (#9865)

Co-authored-by: Alexey Zezin <zezin@axiomatika.com>
---
 projects/cdk/observables/control-value.ts     | 12 ++----
 .../observables/test/control-value.spec.ts    | 37 +------------------
 2 files changed, 5 insertions(+), 44 deletions(-)

diff --git a/projects/cdk/observables/control-value.ts b/projects/cdk/observables/control-value.ts
index 4dc605ba8c43..9017ff5d331a 100644
--- a/projects/cdk/observables/control-value.ts
+++ b/projects/cdk/observables/control-value.ts
@@ -1,5 +1,4 @@
 import {AbstractControl, AbstractControlDirective} from '@angular/forms';
-import {TuiValueChangesException} from '@taiga-ui/cdk/exceptions';
 import {Observable} from 'rxjs';
 import {startWith} from 'rxjs/operators';
 
@@ -9,11 +8,8 @@ import {startWith} from 'rxjs/operators';
 export function tuiControlValue<T>(
     control: AbstractControl | AbstractControlDirective,
 ): Observable<T> {
-    return new Observable(subscriber => {
-        if (!control.valueChanges) {
-            throw new TuiValueChangesException();
-        }
-
-        return control.valueChanges.pipe(startWith(control.value)).subscribe(subscriber);
-    });
+    return new Observable(
+        subscriber =>
+            control?.valueChanges?.pipe(startWith(control.value)).subscribe(subscriber),
+    );
 }
diff --git a/projects/cdk/observables/test/control-value.spec.ts b/projects/cdk/observables/test/control-value.spec.ts
index 5b5da1f22278..75cda1d3293e 100644
--- a/projects/cdk/observables/test/control-value.spec.ts
+++ b/projects/cdk/observables/test/control-value.spec.ts
@@ -1,7 +1,6 @@
 import {fakeAsync} from '@angular/core/testing';
-import {AbstractControl, FormControl} from '@angular/forms';
+import {FormControl} from '@angular/forms';
 import {tuiControlValue} from '@taiga-ui/cdk';
-import {tuiSwitchNgDevMode} from '@taiga-ui/testing';
 import {skip} from 'rxjs/operators';
 
 describe('tuiControlValue', () => {
@@ -30,38 +29,4 @@ describe('tuiControlValue', () => {
 
         expect(actual).toBe('test');
     }));
-
-    describe('dev mode', () => {
-        beforeEach(() => tuiSwitchNgDevMode(true));
-
-        it('throws an error if there is no valueChanges', fakeAsync(() => {
-            let actual = '';
-
-            tuiControlValue({} as AbstractControl).subscribe({
-                next: () => {},
-                error: (err: unknown) => {
-                    actual = (err as Error).message;
-                },
-            });
-
-            expect(actual).toBe('Control does not have valueChanges');
-        }));
-
-        afterEach(() => tuiSwitchNgDevMode(false));
-    });
-
-    describe('production mode', () => {
-        it('throws an error if there is no valueChanges', fakeAsync(() => {
-            let actual = '';
-
-            tuiControlValue({} as AbstractControl).subscribe({
-                next: () => {},
-                error: (err: unknown) => {
-                    actual = (err as Error).message;
-                },
-            });
-
-            expect(actual).toBe('');
-        }));
-    });
 });