From 659e9cfb592cd109edeee2f86d291e6ba0ccc72e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=A1=D0=BA=D0=BE=D0=B2=D0=BE=D1=80=D0=BE=D0=B4=D0=B0=20?=
 =?UTF-8?q?=D0=9D=D0=B8=D0=BA=D0=B8=D1=82=D0=B0=20=D0=90=D0=BD=D0=B4=D1=80?=
 =?UTF-8?q?=D0=B5=D0=B5=D0=B2=D0=B8=D1=87?= <chalkerx@gmail.com>
Date: Wed, 29 Aug 2018 18:44:02 +0300
Subject: [PATCH] [WiP] buffer: runtime-deprecate buffer constructor in sync
 mode

---
 lib/buffer.js                     | 1 +
 lib/internal/process/next_tick.js | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/lib/buffer.js b/lib/buffer.js
index e025b322f0c791..27e2e1c6b2cd78 100644
--- a/lib/buffer.js
+++ b/lib/buffer.js
@@ -147,6 +147,7 @@ function showFlaggedDeprecation() {
   if (bufferWarningAlreadyEmitted ||
       ++nodeModulesCheckCounter > 10000 ||
       (!pendingDeprecation &&
+       !process.stillSynchronous &&
        isInsideNodeModules())) {
     // We don't emit a warning, because we either:
     // - Already did so, or
diff --git a/lib/internal/process/next_tick.js b/lib/internal/process/next_tick.js
index df6984aabc8c07..c78c4039a619b4 100644
--- a/lib/internal/process/next_tick.js
+++ b/lib/internal/process/next_tick.js
@@ -116,4 +116,7 @@ function setupNextTick(_setupNextTick, _setupPromises) {
       tickInfo[kHasScheduled] = 1;
     queue.push(new TickObject(callback, args, getDefaultTriggerAsyncId()));
   }
+
+  process.stillSynchronous = true;
+  process.nextTick(() => { process.stillSynchronous = false; });
 }