diff --git a/runtime/Cargo.toml b/runtime/Cargo.toml
index c27ae10121..484266888c 100644
--- a/runtime/Cargo.toml
+++ b/runtime/Cargo.toml
@@ -33,12 +33,8 @@ name = "deno_runtime"
 path = "lib.rs"
 
 [[example]]
-name = "extension_with_esm"
-path = "examples/extension_with_esm/main.rs"
-
-[[example]]
-name = "extension_with_ops"
-path = "examples/extension_with_ops/main.rs"
+name = "extension"
+path = "examples/extension/main.rs"
 
 [build-dependencies]
 deno_ast.workspace = true
diff --git a/runtime/examples/extension_with_esm/bootstrap.js b/runtime/examples/extension/bootstrap.js
similarity index 67%
rename from runtime/examples/extension_with_esm/bootstrap.js
rename to runtime/examples/extension/bootstrap.js
index 7cbff9cb3b..9461acb84a 100644
--- a/runtime/examples/extension_with_esm/bootstrap.js
+++ b/runtime/examples/extension/bootstrap.js
@@ -1,5 +1,7 @@
 // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
+import { op_hello } from "ext:core/ops";
 function hello() {
-  console.log("Hello from extension!");
+  op_hello("world");
 }
+
 globalThis.Extension = { hello };
diff --git a/runtime/examples/extension_with_esm/main.js b/runtime/examples/extension/main.js
similarity index 60%
rename from runtime/examples/extension_with_esm/main.js
rename to runtime/examples/extension/main.js
index fe9be8c265..4d6e4e3b7d 100644
--- a/runtime/examples/extension_with_esm/main.js
+++ b/runtime/examples/extension/main.js
@@ -1,4 +1,4 @@
 // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
-console.log("Hello world!");
-console.log(Deno);
+console.log("Hello world from JS!");
+console.log(Deno.build);
 Extension.hello();
diff --git a/runtime/examples/extension_with_esm/main.rs b/runtime/examples/extension/main.rs
similarity index 74%
rename from runtime/examples/extension_with_esm/main.rs
rename to runtime/examples/extension/main.rs
index c635761e12..0026d0de04 100644
--- a/runtime/examples/extension_with_esm/main.rs
+++ b/runtime/examples/extension/main.rs
@@ -4,23 +4,31 @@ use std::path::Path;
 use std::rc::Rc;
 
 use deno_core::error::AnyError;
+use deno_core::op2;
 use deno_core::FsModuleLoader;
 use deno_core::ModuleSpecifier;
 use deno_runtime::permissions::PermissionsContainer;
 use deno_runtime::worker::MainWorker;
 use deno_runtime::worker::WorkerOptions;
 
+#[op2(fast)]
+fn op_hello(#[string] text: &str) {
+  println!("Hello {} from an op!", text);
+}
+
 deno_core::extension!(
   hello_runtime,
+  ops = [op_hello],
   esm_entry_point = "ext:hello_runtime/bootstrap.js",
-  esm = [dir "examples/extension_with_esm", "bootstrap.js"]
+  esm = [dir "examples/extension", "bootstrap.js"]
 );
 
 #[tokio::main]
 async fn main() -> Result<(), AnyError> {
-  let js_path = Path::new(env!("CARGO_MANIFEST_DIR"))
-    .join("examples/extension_with_esm/main.js");
+  let js_path =
+    Path::new(env!("CARGO_MANIFEST_DIR")).join("examples/extension/main.js");
   let main_module = ModuleSpecifier::from_file_path(js_path).unwrap();
+  eprintln!("Running {main_module}...");
   let mut worker = MainWorker::bootstrap_from_options(
     main_module.clone(),
     PermissionsContainer::allow_all(),
diff --git a/runtime/examples/extension_with_ops/main.js b/runtime/examples/extension_with_ops/main.js
deleted file mode 100644
index d7cdc1ec43..0000000000
--- a/runtime/examples/extension_with_ops/main.js
+++ /dev/null
@@ -1,2 +0,0 @@
-// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
-Deno[Deno.internal].core.ops.op_hello("World");
diff --git a/runtime/examples/extension_with_ops/main.rs b/runtime/examples/extension_with_ops/main.rs
deleted file mode 100644
index f0b4364b5d..0000000000
--- a/runtime/examples/extension_with_ops/main.rs
+++ /dev/null
@@ -1,38 +0,0 @@
-// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
-
-use std::path::Path;
-use std::rc::Rc;
-
-use deno_core::error::AnyError;
-use deno_core::op2;
-use deno_core::FsModuleLoader;
-use deno_core::ModuleSpecifier;
-use deno_runtime::permissions::PermissionsContainer;
-use deno_runtime::worker::MainWorker;
-use deno_runtime::worker::WorkerOptions;
-
-deno_core::extension!(hello_runtime, ops = [op_hello]);
-
-#[op2(fast)]
-fn op_hello(#[string] text: &str) {
-  println!("Hello {}!", text);
-}
-
-#[tokio::main]
-async fn main() -> Result<(), AnyError> {
-  let js_path = Path::new(env!("CARGO_MANIFEST_DIR"))
-    .join("examples/extension_with_ops/main.js");
-  let main_module = ModuleSpecifier::from_file_path(js_path).unwrap();
-  let mut worker = MainWorker::bootstrap_from_options(
-    main_module.clone(),
-    PermissionsContainer::allow_all(),
-    WorkerOptions {
-      module_loader: Rc::new(FsModuleLoader),
-      extensions: vec![hello_runtime::init_ops()],
-      ..Default::default()
-    },
-  );
-  worker.execute_main_module(&main_module).await?;
-  worker.run_event_loop(false).await?;
-  Ok(())
-}
diff --git a/runtime/ops/bootstrap.rs b/runtime/ops/bootstrap.rs
index 7de532a9f5..cbb87db886 100644
--- a/runtime/ops/bootstrap.rs
+++ b/runtime/ops/bootstrap.rs
@@ -30,7 +30,7 @@ deno_core::extension!(
   },
 );
 
-#[derive(Serialize, Default)]
+#[derive(Serialize)]
 #[serde(rename_all = "camelCase")]
 pub struct SnapshotOptions {
   pub deno_version: String,
@@ -39,6 +39,17 @@ pub struct SnapshotOptions {
   pub target: String,
 }
 
+impl Default for SnapshotOptions {
+  fn default() -> Self {
+    Self {
+      deno_version: "dev".to_owned(),
+      ts_version: "n/a".to_owned(),
+      v8_version: deno_core::v8_version(),
+      target: std::env::consts::ARCH.to_owned(),
+    }
+  }
+}
+
 // Note: Called at snapshot time, op perf is not a concern.
 #[op2]
 #[serde]
diff --git a/runtime/worker.rs b/runtime/worker.rs
index 97ea539803..2fb32c766b 100644
--- a/runtime/worker.rs
+++ b/runtime/worker.rs
@@ -566,11 +566,16 @@ impl MainWorker {
     }
 
     let scope = &mut self.js_runtime.handle_scope();
+    let scope = &mut v8::TryCatch::new(scope);
     let args = options.as_v8(scope);
     let bootstrap_fn = self.bootstrap_fn_global.take().unwrap();
     let bootstrap_fn = v8::Local::new(scope, bootstrap_fn);
     let undefined = v8::undefined(scope);
-    bootstrap_fn.call(scope, undefined.into(), &[args]).unwrap();
+    bootstrap_fn.call(scope, undefined.into(), &[args]);
+    if let Some(exception) = scope.exception() {
+      let error = JsError::from_v8_exception(scope, exception);
+      panic!("Bootstrap exception: {error}");
+    }
   }
 
   /// See [JsRuntime::execute_script](deno_core::JsRuntime::execute_script)