diff --git a/Cargo.lock b/Cargo.lock
index 4ff45842d8..f7af3936a3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1343,9 +1343,9 @@ dependencies = [
 
 [[package]]
 name = "deno_core"
-version = "0.298.0"
+version = "0.299.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "54fb4db0174c7130b3a8a90ed6aefb3b42a8acd6b75ea9a5a0c7c4d02993cd61"
+checksum = "428488cc6b392a199a159054da754f56a1fdc63ee03f16be2c21cbd22e936e7b"
 dependencies = [
  "anyhow",
  "bincode",
@@ -1355,7 +1355,7 @@ dependencies = [
  "cooked-waker",
  "deno_core_icudata",
  "deno_ops",
- "deno_unsync",
+ "deno_unsync 0.4.0",
  "futures",
  "libc",
  "memoffset 0.9.1",
@@ -1545,7 +1545,7 @@ dependencies = [
  "data-url",
  "deno_ast",
  "deno_semver",
- "deno_unsync",
+ "deno_unsync 0.3.10",
  "encoding_rs",
  "futures",
  "import_map",
@@ -1825,9 +1825,9 @@ dependencies = [
 
 [[package]]
 name = "deno_ops"
-version = "0.174.0"
+version = "0.175.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cdacbea7e6c459f0bcb48cdb0c7ce8ca6ece53645385fe98cf38e7242b2c5809"
+checksum = "2d2b71759647722be6ae051919b75cb66b3dccafe61b53c75ad5a6fad9d0ee4a"
 dependencies = [
  "proc-macro-rules",
  "proc-macro2",
@@ -2005,6 +2005,16 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "deno_unsync"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "03ee1607db298c8f12124b345a52d5f2f504a7504c9d535f1d8f07127b237010"
+dependencies = [
+ "parking_lot 0.12.3",
+ "tokio",
+]
+
 [[package]]
 name = "deno_url"
 version = "0.162.0"
@@ -5962,9 +5972,9 @@ dependencies = [
 
 [[package]]
 name = "serde_v8"
-version = "0.207.0"
+version = "0.208.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a442f2e04f8367eb99982beb6733fb88df666da9379f937552d67ca060de6e80"
+checksum = "583f3c71a6f7acc1711ad718a33f6e799bacdc711d297b15bb28533f32264c58"
 dependencies = [
  "num-bigint",
  "serde",
@@ -6889,7 +6899,7 @@ dependencies = [
  "base64 0.21.7",
  "bytes",
  "console_static_text",
- "deno_unsync",
+ "deno_unsync 0.3.10",
  "denokv_proto",
  "fastwebsockets",
  "flate2",
diff --git a/Cargo.toml b/Cargo.toml
index 3902a028a0..ce3a364635 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -45,7 +45,7 @@ repository = "https://github.com/denoland/deno"
 
 [workspace.dependencies]
 deno_ast = { version = "=0.40.0", features = ["transpiling"] }
-deno_core = { version = "0.298.0" }
+deno_core = { version = "0.299.0" }
 
 deno_bench_util = { version = "0.156.0", path = "./bench_util" }
 deno_lockfile = "0.20.0"
diff --git a/cli/util/sync/mod.rs b/cli/util/sync/mod.rs
index f584375035..3c2ffbd7dd 100644
--- a/cli/util/sync/mod.rs
+++ b/cli/util/sync/mod.rs
@@ -6,9 +6,8 @@ mod task_queue;
 mod value_creator;
 
 pub use async_flag::AsyncFlag;
+pub use deno_core::unsync::sync::AtomicFlag;
 pub use sync_read_async_write_lock::SyncReadAsyncWriteLock;
 pub use task_queue::TaskQueue;
 pub use task_queue::TaskQueuePermit;
 pub use value_creator::MultiRuntimeAsyncValueCreator;
-// todo(dsherret): this being in the unsync module is slightly confusing, but it's Sync
-pub use deno_core::unsync::AtomicFlag;
diff --git a/runtime/fmt_errors.rs b/runtime/fmt_errors.rs
index af7d760519..4687dbd475 100644
--- a/runtime/fmt_errors.rs
+++ b/runtime/fmt_errors.rs
@@ -1,8 +1,7 @@
 // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
 //! This mod provides DenoError to unify errors across Deno.
-use deno_core::error::format_file_name;
+use deno_core::error::format_frame;
 use deno_core::error::JsError;
-use deno_core::error::JsStackFrame;
 use deno_terminal::colors::cyan;
 use deno_terminal::colors::italic_bold;
 use deno_terminal::colors::red;
@@ -21,96 +20,22 @@ struct IndexedErrorReference<'a> {
   index: usize,
 }
 
-// Keep in sync with `/core/error.js`.
-pub fn format_location(frame: &JsStackFrame) -> String {
-  let _internal = frame
-    .file_name
-    .as_ref()
-    .map(|f| f.starts_with("ext:"))
-    .unwrap_or(false);
-  if frame.is_native {
-    return cyan("native").to_string();
-  }
-  let mut result = String::new();
-  let file_name = frame.file_name.clone().unwrap_or_default();
-  if !file_name.is_empty() {
-    result += &cyan(&format_file_name(&file_name)).to_string();
-  } else {
-    if frame.is_eval {
-      result +=
-        &(cyan(&frame.eval_origin.as_ref().unwrap()).to_string() + ", ");
-    }
-    result += &cyan("<anonymous>").to_string();
-  }
-  if let Some(line_number) = frame.line_number {
-    write!(result, ":{}", yellow(&line_number.to_string())).unwrap();
-    if let Some(column_number) = frame.column_number {
-      write!(result, ":{}", yellow(&column_number.to_string())).unwrap();
-    }
-  }
-  result
-}
+struct AnsiColors;
 
-fn format_frame(frame: &JsStackFrame) -> String {
-  let _internal = frame
-    .file_name
-    .as_ref()
-    .map(|f| f.starts_with("ext:"))
-    .unwrap_or(false);
-  let is_method_call =
-    !(frame.is_top_level.unwrap_or_default() || frame.is_constructor);
-  let mut result = String::new();
-  if frame.is_async {
-    result += "async ";
-  }
-  if frame.is_promise_all {
-    result += &italic_bold(&format!(
-      "Promise.all (index {})",
-      frame.promise_index.unwrap_or_default()
-    ))
-    .to_string();
-    return result;
-  }
-  if is_method_call {
-    let mut formatted_method = String::new();
-    if let Some(function_name) = &frame.function_name {
-      if let Some(type_name) = &frame.type_name {
-        if !function_name.starts_with(type_name) {
-          write!(formatted_method, "{type_name}.").unwrap();
-        }
-      }
-      formatted_method += function_name;
-      if let Some(method_name) = &frame.method_name {
-        if !function_name.ends_with(method_name) {
-          write!(formatted_method, " [as {method_name}]").unwrap();
-        }
-      }
-    } else {
-      if let Some(type_name) = &frame.type_name {
-        write!(formatted_method, "{type_name}.").unwrap();
-      }
-      if let Some(method_name) = &frame.method_name {
-        formatted_method += method_name
-      } else {
-        formatted_method += "<anonymous>";
+impl deno_core::error::ErrorFormat for AnsiColors {
+  fn fmt_element(
+    element: deno_core::error::ErrorElement,
+    s: &str,
+  ) -> std::borrow::Cow<'_, str> {
+    use deno_core::error::ErrorElement::*;
+    match element {
+      Anonymous | NativeFrame | FileName | EvalOrigin => {
+        cyan(s).to_string().into()
       }
+      LineNumber | ColumnNumber => yellow(s).to_string().into(),
+      FunctionName | PromiseAll => italic_bold(s).to_string().into(),
     }
-    result += &italic_bold(&formatted_method).to_string();
-  } else if frame.is_constructor {
-    result += "new ";
-    if let Some(function_name) = &frame.function_name {
-      write!(result, "{}", italic_bold(&function_name)).unwrap();
-    } else {
-      result += &cyan("<anonymous>").to_string();
-    }
-  } else if let Some(function_name) = &frame.function_name {
-    result += &italic_bold(&function_name).to_string();
-  } else {
-    result += &format_location(frame);
-    return result;
   }
-  write!(result, " ({})", format_location(frame)).unwrap();
-  result
 }
 
 /// Take an optional source line and associated information to format it into
@@ -254,7 +179,7 @@ fn format_js_error_inner(
     0,
   ));
   for frame in &js_error.frames {
-    write!(s, "\n    at {}", format_frame(frame)).unwrap();
+    write!(s, "\n    at {}", format_frame::<AnsiColors>(frame)).unwrap();
   }
   if let Some(cause) = &js_error.cause {
     let is_caused_by_circular = circular