From f89af7de3250ee8a5da72fe6965bc17e7e743b45 Mon Sep 17 00:00:00 2001
From: ExE Boss <3889017+ExE-Boss@users.noreply.github.com>
Date: Sat, 8 Feb 2020 15:00:00 +0100
Subject: [PATCH] =?UTF-8?q?feat:=20use=C2=A0a=C2=A0global=C2=A0symbol=20fo?=
 =?UTF-8?q?r=C2=A0`util.promisify.custom`?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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Define `util.promisify.custom`
as `Symbol.for("nodejs.util.inspect.custom")`, rather than
as `Symbol("util.inspect.custom")`.

This allows custom `promisify` wrappers to easily/safely be defined
in non‑Node.js environments.

Refs: https://github.com/nodejs/node/issues/31647
Refs: https://github.com/nodejs/node/pull/31672
---
 util.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/util.js b/util.js
index 6eea657..d8d0706 100644
--- a/util.js
+++ b/util.js
@@ -607,7 +607,10 @@ function hasOwnProperty(obj, prop) {
   return Object.prototype.hasOwnProperty.call(obj, prop);
 }
 
-var kCustomPromisifiedSymbol = typeof Symbol !== 'undefined' ? Symbol('util.promisify.custom') : undefined;
+var kCustomPromisifiedSymbol =
+  typeof Symbol === 'function' && typeof Symbol['for'] === 'function'
+    ? Symbol['for']('nodejs.util.promisify.custom')
+    : undefined;
 
 exports.promisify = function promisify(original) {
   if (typeof original !== 'function')