From a76800676f14532d1711df610ef12e9401ae6f53 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Julien=20Valverd=C3=A9?= <julien.valverde@mailo.com>
Date: Sat, 30 May 2026 05:59:53 +0200
Subject: [PATCH] Update README

---
 packages/effect-lens/README.md | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/packages/effect-lens/README.md b/packages/effect-lens/README.md
index 8e641a0..813b7f9 100644
--- a/packages/effect-lens/README.md
+++ b/packages/effect-lens/README.md
@@ -70,8 +70,9 @@ You can get pretty creative! Here's an example of a Lens that points to a specif
 const lens = Effect.all([
     KeyValueStore.KeyValueStore,
     Effect.succeed("someKey"),
+    Effect.makeSemaphore(1),
 ]).pipe(
-    Effect.map(([kv, key]) => Lens.make({
+    Effect.map(([kv, key, semaphore]) => Lens.make({
         get: kv.get(key),
 
         changes: kv.get(key).pipe(
@@ -90,7 +91,7 @@ const lens = Effect.all([
             ? kv.set(key, a.value)
             : kv.remove(key),
 
-        lock: Effect.succeed(effect => effect),
+        lock: Effect.succeed(semaphore.withPermits(1)),
     })),
 
     Effect.provide(BrowserKeyValueStore.layerLocalStorage),