From f50ec42f151eee2ebd487624fdc0323b2cefdd43 Mon Sep 17 00:00:00 2001
From: SkyZeroZx <73321943+SkyZeroZx@users.noreply.github.com>
Date: Sat, 7 Feb 2026 11:19:49 -0500
Subject: [PATCH] refactor(forms): guard unsupportedFeatureError with ngDevMode

Move unsupportedFeatureError message behind ngDevMode
to keep it dev-only and allow proper tree-shaking.
---
 .../src/signal_form_control/signal_form_control.ts       | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/packages/forms/signals/compat/src/signal_form_control/signal_form_control.ts b/packages/forms/signals/compat/src/signal_form_control/signal_form_control.ts
index 4537998a031..db21abf8bc4 100644
--- a/packages/forms/signals/compat/src/signal_form_control/signal_form_control.ts
+++ b/packages/forms/signals/compat/src/signal_form_control/signal_form_control.ts
@@ -346,7 +346,7 @@ export class SignalFormControl<T> extends AbstractControl {
 
   override set dirty(_: boolean) {
     throw unsupportedFeatureError(
-      'Setting dirty directly is not supported. Instead use markAsDirty().',
+      ngDevMode && 'Setting dirty directly is not supported. Instead use markAsDirty().',
     );
   }
 
@@ -356,7 +356,7 @@ export class SignalFormControl<T> extends AbstractControl {
 
   override set pristine(_: boolean) {
     throw unsupportedFeatureError(
-      'Setting pristine directly is not supported. Instead use reset().',
+      ngDevMode && 'Setting pristine directly is not supported. Instead use reset().',
     );
   }
 
@@ -366,7 +366,8 @@ export class SignalFormControl<T> extends AbstractControl {
 
   override set touched(_: boolean) {
     throw unsupportedFeatureError(
-      'Setting touched directly is not supported. Instead use markAsTouched() or reset().',
+      ngDevMode &&
+        'Setting touched directly is not supported. Instead use markAsTouched() or reset().',
     );
   }
 
@@ -376,7 +377,7 @@ export class SignalFormControl<T> extends AbstractControl {
 
   override set untouched(_: boolean) {
     throw unsupportedFeatureError(
-      'Setting untouched directly is not supported. Instead use reset().',
+      ngDevMode && 'Setting untouched directly is not supported. Instead use reset().',
     );
   }