1 files changed, 22 insertions, 1 deletions
diff --git a/ext/web/lib.rs b/ext/web/lib.rs
index 2f59636fe..76095810e 100644
--- a/ext/web/lib.rs
+++ b/ext/web/lib.rs
@@ -350,7 +350,28 @@ impl Resource for TextDecoderResource {
   }
 }
 
-#[op]
+#[op(v8)]
+fn op_encoding_encode_into_fallback(
+  scope: &mut v8::HandleScope,
+  input: serde_v8::Value,
+  buffer: &mut [u8],
+  out_buf: &mut [u32],
+) -> Result<(), AnyError> {
+  let s = v8::Local::<v8::String>::try_from(input.v8_value)?;
+
+  let mut nchars = 0;
+  out_buf[1] = s.write_utf8(
+    scope,
+    buffer,
+    Some(&mut nchars),
+    v8::WriteOptions::NO_NULL_TERMINATION
+      | v8::WriteOptions::REPLACE_INVALID_UTF8,
+  ) as u32;
+  out_buf[0] = nchars as u32;
+  Ok(())
+}
+
+#[op(fast, slow = op_encoding_encode_into_fallback)]
 fn op_encoding_encode_into(
   input: Cow<'_, str>,
   buffer: &mut [u8],