From b1c8f15c5f169e021f7c46eb7b219de95fe97603 Mon Sep 17 00:00:00 2001
From: Ruben Bridgewater <ruben@bridgewater.de>
Date: Thu, 17 Aug 2017 02:33:11 -0300
Subject: [PATCH] util: use constructor name

When reaching the depth limit util.inspect always prints [Array]
or [Object] no matter if it is a subclass or not.
This fixes it by showing the actual constructor name instead.

PR-URL: https://github.com/nodejs/node/pull/14886
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Yuta Hiroto <hello@about-hiroppy.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
---
 lib/util.js                        | 8 +++-----
 test/parallel/test-util-inspect.js | 4 ++++
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/lib/util.js b/lib/util.js
index 07fbe15f38cb70..590a3b49034345 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -594,11 +594,9 @@ function formatValue(ctx, value, recurseTimes, ln) {
     return ctx.stylize('[Circular]', 'special');
 
   if (recurseTimes != null) {
-    if (recurseTimes < 0) {
-      if (Array.isArray(value))
-        return ctx.stylize('[Array]', 'special');
-      return ctx.stylize('[Object]', 'special');
-    }
+    if (recurseTimes < 0)
+      return ctx.stylize(`[${constructor ? constructor.name : 'Object'}]`,
+                         'special');
     recurseTimes -= 1;
   }
 
diff --git a/test/parallel/test-util-inspect.js b/test/parallel/test-util-inspect.js
index 70f7c4d43139ea..02e35ec9e85562 100644
--- a/test/parallel/test-util-inspect.js
+++ b/test/parallel/test-util-inspect.js
@@ -994,6 +994,10 @@ if (typeof Symbol !== 'undefined') {
                      'MapSubclass { \'foo\' => 42 }');
   assert.strictEqual(util.inspect(new PromiseSubclass(() => {})),
                      'PromiseSubclass { <pending> }');
+  assert.strictEqual(
+    util.inspect({ a: { b: new ArraySubclass([1, [2], 3]) } }, { depth: 1 }),
+    '{ a: { b: [ArraySubclass] } }'
+  );
 }
 
 // Empty and circular before depth