feat(unstable): add `Deno.jupyter.broadcast` API (#20656)

Closes https://github.com/denoland/deno/issues/20591

---------

Co-authored-by: Kyle Kelley <rgbkrk@gmail.com>

2 files changed, 17 insertions, 0 deletions

diff --git a/cli/js/40_jupyter.js b/cli/js/40_jupyter.js
new file mode 100644
index 000000000..8cdf0789a
--- /dev/null
+++ b/cli/js/40_jupyter.js
@@ -0,0 +1,16 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+
+const core = globalThis.Deno.core;
+const internals = globalThis.__bootstrap.internals;
+
+import { denoNsUnstable } from "ext:runtime/90_deno_ns.js";
+
+function enableJupyter() {
+  denoNsUnstable.jupyter = {
+    async broadcast(msgType, content) {
+      await core.opAsync("op_jupyter_broadcast", msgType, content);
+    },
+  };
+}
+
+internals.enableJupyter = enableJupyter;
diff --git a/cli/js/99_main.js b/cli/js/99_main.js
index dc9d74fb0..37342f6cd 100644
--- a/cli/js/99_main.js
+++ b/cli/js/99_main.js
@@ -1,3 +1,4 @@
 // Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
 import "ext:cli/40_testing.js";
+import "ext:cli/40_jupyter.js";
 import "ext:cli/runtime/js/99_main.js";