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)

---
 runtime/js/99_main.js | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'runtime/js')

diff --git a/runtime/js/99_main.js b/runtime/js/99_main.js
index 15e4936b1..d2a28838a 100644
--- a/runtime/js/99_main.js
+++ b/runtime/js/99_main.js
@@ -545,12 +545,19 @@ function bootstrapMainRuntime(runtimeOptions) {
     // TODO(bartlomieju): this is not ideal, but because we use `ObjectAssign`
     // above any properties that are defined elsewhere using `Object.defineProperty`
     // are lost.
+    let jupyterNs = undefined;
     ObjectDefineProperty(finalDenoNs, "jupyter", {
       get() {
+        if (jupyterNs) {
+          return jupyterNs;
+        }
         throw new Error(
           "Deno.jupyter is only available in `deno jupyter` subcommand.",
         );
       },
+      set(val) {
+        jupyterNs = val;
+      },
     });
   }
 
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