From adaa3f4d7dcdc909b650c429bc05367f476b0213 Mon Sep 17 00:00:00 2001
From: Robert Nagy <ronagy@icloud.com>
Date: Wed, 22 Dec 2021 09:25:33 +0100
Subject: [PATCH] src: skip costly pushing/popping if we pass zeroes as async
 context

---
 src/api/callback.cc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/api/callback.cc b/src/api/callback.cc
index fb0e5586eb400a..fad78956f27d43 100644
--- a/src/api/callback.cc
+++ b/src/api/callback.cc
@@ -56,6 +56,12 @@ InternalCallbackScope::InternalCallbackScope(Environment* env,
   CHECK_NOT_NULL(env);
   env->PushAsyncCallbackScope();
 
+  // Skip costly pushing/popping if we pass zeroes as async context
+  if (async_context_.async_id == 0) {
+    pushed_ids_ = false;
+    return;
+  }
+
   if (!env->can_call_into_js()) {
     failed_ = true;
     return;