From 744d0fc4f1ded6ab56c17f662d3c801af71b74f1 Mon Sep 17 00:00:00 2001
From: Lann Martin <lmartin@akamai.com>
Date: Wed, 5 Aug 2026 15:22:55 -0400
Subject: [PATCH] fix(bindgen): fix utf-8 to utf-16 transcode length
 calculation

---
 crates/js-component-bindgen/src/transpile_bindgen.rs | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/crates/js-component-bindgen/src/transpile_bindgen.rs b/crates/js-component-bindgen/src/transpile_bindgen.rs
index 97f56dfd6..c33f8d6ed 100644
--- a/crates/js-component-bindgen/src/transpile_bindgen.rs
+++ b/crates/js-component-bindgen/src/transpile_bindgen.rs
@@ -2462,12 +2462,12 @@ impl<'a> Instantiator<'a, '_> {
                               function trampoline{i} (from_ptr, len, to_ptr) {{
                                   const decoder = new TextDecoder();
                                   const content = decoder.decode(new Uint8Array(memory{from}.buffer, from_ptr, len));
-                                  const strlen = content.length
-                                  const view = new Uint16Array(memory{to}.buffer, to_ptr, strlen * 2)
-                                  for (var i = 0; i < strlen; i++) {{
+                                  const codeUnits = content.length;
+                                  const view = new Uint16Array(memory{to}.buffer, to_ptr, codeUnits);
+                                  for (var i = 0; i < codeUnits; i++) {{
                                       view[i] = content.charCodeAt(i);
                                   }}
-                                  return strlen;
+                                  return codeUnits;
                               }}
                             "#,
                         );