From 0bd53fd52d8937afed401fe1c61bb2ba0b23501c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bartek=20Iwa=C5=84czuk?= <biwanczuk@gmail.com>
Date: Thu, 28 Sep 2023 16:51:44 +0200
Subject: fix(jupyter): more robust Deno.jupyter namespace (#20710)

---
 cli/tools/jupyter/server.rs | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

(limited to 'cli/tools/jupyter/server.rs')

diff --git a/cli/tools/jupyter/server.rs b/cli/tools/jupyter/server.rs
index c54dcd275..2489fcd04 100644
--- a/cli/tools/jupyter/server.rs
+++ b/cli/tools/jupyter/server.rs
@@ -391,15 +391,18 @@ impl JupyterServer {
       let output =
         get_jupyter_display_or_eval_value(&mut self.repl_session, &result)
           .await?;
-      msg
-        .new_message("execute_result")
-        .with_content(json!({
-            "execution_count": self.execution_count,
-            "data": output,
-            "metadata": {},
-        }))
-        .send(&mut *self.iopub_socket.lock().await)
-        .await?;
+      // Don't bother sending `execute_result` reply if the MIME bundle is empty
+      if !output.is_empty() {
+        msg
+          .new_message("execute_result")
+          .with_content(json!({
+              "execution_count": self.execution_count,
+              "data": output,
+              "metadata": {},
+          }))
+          .send(&mut *self.iopub_socket.lock().await)
+          .await?;
+      }
       msg
         .new_reply()
         .with_content(json!({
-- 
cgit v1.2.3