fix

core/error.rs

@@ -1393,7 +1393,7 @@ pub mod callsite_fns {
   fn to_string_inner<'e>(
     scope: &mut v8::HandleScope<'e>,
     this: v8::Local<'e, v8::Object>,
-    orig: v8::Local<'e, Object>,
+    orig: v8::Local<'e, v8::Object>,
     orig_to_string_v8: v8::Local<'e, v8::String>,
   ) -> Option<v8::Local<'e, v8::String>> {
     let orig_to_string = serde_v8::to_utf8(orig_to_string_v8, scope);

core/webidl.rs

@@ -1,12 +1,14 @@
 // Copyright 2018-2025 the Deno authors. MIT license.
 
+use deno_error::JsError;
 use indexmap::IndexMap;
 use std::borrow::Cow;
 use v8::HandleScope;
 use v8::Local;
 use v8::Value;
 
-#[derive(Debug)]
+#[derive(Debug, JsError)]
+#[class(type)]
 pub struct WebIdlError {
   pub prefix: Cow<'static, str>,
   pub context: Cow<'static, str>,

ops/op2/dispatch_slow.rs

@@ -665,7 +665,7 @@ pub fn from_arg(
         syn::parse_str::<syn::Type>(ty).expect("Failed to reparse state type");
       let scope = scope.clone();
       let err = format_ident!("{}_err", arg_ident);
-      let throw_exception = throw_type_error_string(generator_state, &err)?;
+      let throw_exception = throw_type_error_string(generator_state, &err);
       let prefix = get_prefix(generator_state);
       let context = format!("Argument {}", index + 1);
 

testing/checkin/runner/ops.rs

@@ -3,6 +3,7 @@
 use std::cell::RefCell;
 use std::rc::Rc;
 
+use deno_core::error::OpError;
 use deno_core::op2;
 use deno_core::stats::RuntimeActivityDiff;
 use deno_core::stats::RuntimeActivitySnapshot;
@@ -97,7 +98,7 @@ impl TestObjectWrap {
   fn with_rename(&self) {}
 
   #[async_method]
-  async fn with_async_fn(&self, #[smi] ms: u32) -> Result<(), AnyError> {
+  async fn with_async_fn(&self, #[smi] ms: u32) -> Result<(), OpError> {
     tokio::time::sleep(std::time::Duration::from_millis(ms as u64)).await;
     Ok(())
   }