feat(extensions/web): add structuredClone function (#11572)

Co-authored-by: Luca Casonato <hello@lcas.dev>

2 files changed, 19 insertions, 7 deletions

diff --git a/core/bindings.rs b/core/bindings.rs
index af8560c6a..935397480 100644
--- a/core/bindings.rs
+++ b/core/bindings.rs
@@ -26,6 +26,8 @@ use v8::HandleScope;
 use v8::Local;
 use v8::MapFnTo;
 use v8::SharedArrayBuffer;
+use v8::ValueDeserializerHelper;
+use v8::ValueSerializerHelper;
 
 lazy_static::lazy_static! {
   pub static ref EXTERNAL_REFERENCES: v8::ExternalReferences =
@@ -827,6 +829,7 @@ fn serialize(
   let serialize_deserialize = Box::new(SerializeDeserialize { host_objects });
   let mut value_serializer =
     v8::ValueSerializer::new(scope, serialize_deserialize);
+  value_serializer.write_header();
   match value_serializer.write_value(scope.get_current_context(), value) {
     Some(true) => {
       let vector = value_serializer.release();
@@ -884,6 +887,15 @@ fn deserialize(
   let serialize_deserialize = Box::new(SerializeDeserialize { host_objects });
   let mut value_deserializer =
     v8::ValueDeserializer::new(scope, serialize_deserialize, &zero_copy);
+  let parsed_header = value_deserializer
+    .read_header(scope.get_current_context())
+    .unwrap_or_default();
+  if !parsed_header {
+    let msg = v8::String::new(scope, "could not deserialize value").unwrap();
+    let exception = v8::Exception::range_error(scope, msg);
+    scope.throw_exception(exception);
+    return;
+  }
   let value = value_deserializer.read_value(scope.get_current_context());
 
   match value {
diff --git a/core/serialize_deserialize_test.js b/core/serialize_deserialize_test.js
index 6368d56db..b71bed0c9 100644
--- a/core/serialize_deserialize_test.js
+++ b/core/serialize_deserialize_test.js
@@ -19,7 +19,7 @@ function assertArrayEquals(a1, a2) {
 
 function main() {
   const emptyString = "";
-  const emptyStringSerialized = [34, 0];
+  const emptyStringSerialized = [255, 13, 34, 0];
   assertArrayEquals(Deno.core.serialize(emptyString), emptyStringSerialized);
   assert(
     Deno.core.deserialize(new Uint8Array(emptyStringSerialized)) ===
@@ -29,7 +29,7 @@ function main() {
   const primitiveValueArray = ["test", "a", null, undefined];
   // deno-fmt-ignore
   const primitiveValueArraySerialized = [
-    65, 4, 34, 4, 116, 101, 115, 116,
+    255, 13, 65, 4, 34, 4, 116, 101, 115, 116,
     34, 1, 97, 48, 95, 36, 0, 4,
   ];
   assertArrayEquals(
@@ -48,11 +48,11 @@ function main() {
   circularObject.test = circularObject;
   // deno-fmt-ignore
   const circularObjectSerialized = [
-    111, 34, 4, 116, 101, 115, 116, 94,
-    0, 34, 5, 116, 101, 115, 116, 50,
-    34, 2, 100, 100, 34, 5, 116, 101,
-    115, 116, 51, 34, 2, 97, 97, 123,
-    3,
+    255, 13, 111, 34, 4, 116, 101, 115,
+    116, 94, 0, 34, 5, 116, 101, 115,
+    116, 50, 34, 2, 100, 100, 34, 5,
+    116, 101, 115, 116, 51, 34, 2, 97,
+    97, 123, 3,
   ];
 
   assertArrayEquals(