From aaf1c684c901b340d2a579a20c423976816d9df7 Mon Sep 17 00:00:00 2001
From: Vladimir Kryachko <v.kryachko@gmail.com>
Date: Wed, 28 Jun 2023 14:31:26 -0400
Subject: [PATCH 1/2] Update BehaviorSubject.ts

---
 src/internal/BehaviorSubject.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/internal/BehaviorSubject.ts b/src/internal/BehaviorSubject.ts
index 5178ca3509..f053f77b71 100644
--- a/src/internal/BehaviorSubject.ts
+++ b/src/internal/BehaviorSubject.ts
@@ -7,7 +7,7 @@ import { Subscription } from './Subscription';
  * value whenever it is subscribed to.
  */
 export class BehaviorSubject<T> extends Subject<T> {
-  constructor(private _value: T) {
+  constructor(private _value: T, private readonly _valueFold: (currentValue: T, newValue: T) => T = (_, v) => v) {
     super();
   }
 
@@ -31,6 +31,6 @@ export class BehaviorSubject<T> extends Subject<T> {
   }
 
   next(value: T): void {
-    super.next((this._value = value));
+    super.next((this._value = this._valueFold(this._value, value)));
   }
 }

From d248417cc15ec2c6556fb4f5d5a96fe599c24426 Mon Sep 17 00:00:00 2001
From: Vladimir Kryachko <v.kryachko@gmail.com>
Date: Wed, 28 Jun 2023 14:57:46 -0400
Subject: [PATCH 2/2] Update BehaviorSubject.ts

---
 src/internal/BehaviorSubject.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/internal/BehaviorSubject.ts b/src/internal/BehaviorSubject.ts
index f053f77b71..13dfbe9bb2 100644
--- a/src/internal/BehaviorSubject.ts
+++ b/src/internal/BehaviorSubject.ts
@@ -31,6 +31,7 @@ export class BehaviorSubject<T> extends Subject<T> {
   }
 
   next(value: T): void {
-    super.next((this._value = this._valueFold(this._value, value)));
+    this._value = this._valueFold(this._value, value);
+    super.next(value);
   }
 }