From 715205ac20fc12537fd90d0a55cf406084236e11 Mon Sep 17 00:00:00 2001
From: Arthur Fiorette <me@arthur.place>
Date: Sun, 26 May 2024 22:34:59 -0300
Subject: [PATCH] fix: correct content-length value

---
 .changeset/tough-waves-float.md       |  5 +++++
 packages/fastify-html-plugin/index.js | 11 ++++-------
 2 files changed, 9 insertions(+), 7 deletions(-)
 create mode 100644 .changeset/tough-waves-float.md

diff --git a/.changeset/tough-waves-float.md b/.changeset/tough-waves-float.md
new file mode 100644
index 00000000..881fd753
--- /dev/null
+++ b/.changeset/tough-waves-float.md
@@ -0,0 +1,5 @@
+---
+'@kitajs/fastify-html-plugin': patch
+---
+
+Correct content-length value
diff --git a/packages/fastify-html-plugin/index.js b/packages/fastify-html-plugin/index.js
index fe67ac17..2793fa6f 100644
--- a/packages/fastify-html-plugin/index.js
+++ b/packages/fastify-html-plugin/index.js
@@ -17,7 +17,7 @@ const kAutoDoctype = Symbol.for('fastify-kita-html.autoDoctype');
  * >}
  */
 function plugin(fastify, opts, next) {
-  fastify.decorateReply(kAutoDoctype, (opts.autoDoctype ??= true));
+  fastify.decorateReply(kAutoDoctype, opts.autoDoctype ?? true);
   fastify.decorateReply('html', html);
   return next();
 }
@@ -63,12 +63,9 @@ function handleHtml(htmlStr, reply) {
   const requestData = SUSPENSE_ROOT.requests.get(reply.request.id);
 
   if (requestData === undefined) {
-    return (
-      reply
-        // Should be safe to use .length instead of Buffer.byteLength here
-        .header('content-length', handleHtml.length)
-        .send(htmlStr)
-    );
+    return reply
+      .header('content-length', Buffer.byteLength(htmlStr, 'utf-8'))
+      .send(htmlStr);
   }
 
   requestData.stream.push(htmlStr);