1 files changed, 16 insertions, 2 deletions
diff --git a/core/inspector.rs b/core/inspector.rs
index daedd291d..e3db65afe 100644
--- a/core/inspector.rs
+++ b/core/inspector.rs
@@ -150,6 +150,7 @@ impl JsRuntimeInspector {
   pub fn new(
     isolate: &mut v8::OwnedIsolate,
     context: v8::Global<v8::Context>,
+    is_main: bool,
   ) -> Rc<RefCell<Self>> {
     let scope = &mut v8::HandleScope::new(isolate);
 
@@ -183,13 +184,26 @@ impl JsRuntimeInspector {
     // Tell the inspector about the global context.
     let context = v8::Local::new(scope, context);
     let context_name = v8::inspector::StringView::from(&b"global context"[..]);
-    let aux_data = v8::inspector::StringView::from(&b""[..]);
+    // NOTE(bartlomieju): this is what Node.js does and it turns out some
+    // debuggers (like VSCode) rely on this information to disconnect after
+    // program completes
+    let aux_data = if is_main {
+      r#"{"isDefault": true}"#
+    } else {
+      r#"{"isDefault": false}"#
+    };
+    let aux_data_view = v8::inspector::StringView::from(aux_data.as_bytes());
     self_
       .v8_inspector
       .borrow_mut()
       .as_mut()
       .unwrap()
-      .context_created(context, Self::CONTEXT_GROUP_ID, context_name, aux_data);
+      .context_created(
+        context,
+        Self::CONTEXT_GROUP_ID,
+        context_name,
+        aux_data_view,
+      );
 
     // Poll the session handler so we will get notified whenever there is
     // new incoming debugger activity.