From 22b51ed2327cbf817669aa1241762e240fe06952 Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Sun, 9 Oct 2016 19:54:37 -0700
Subject: [PATCH] Refine `_.isError` checks to avoid false positives on plain
 objects.

---
 lodash.js    | 6 ++++--
 test/test.js | 6 ++++++
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/lodash.js b/lodash.js
index fecdae403..9bb98969d 100644
--- a/lodash.js
+++ b/lodash.js
@@ -88,6 +88,7 @@
       arrayTag = '[object Array]',
       boolTag = '[object Boolean]',
       dateTag = '[object Date]',
+      domExcTag = '[object DOMException]',
       errorTag = '[object Error]',
       funcTag = '[object Function]',
       genTag = '[object GeneratorFunction]',
@@ -11584,8 +11585,9 @@
       if (!isObjectLike(value)) {
         return false;
       }
-      return (baseGetTag(value) == errorTag) ||
-        (typeof value.message == 'string' && typeof value.name == 'string');
+      var tag = baseGetTag(value);
+      return tag == errorTag || tag == domExcTag ||
+        (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value));
     }
 
     /**
diff --git a/test/test.js b/test/test.js
index 77b4be94b..04fb7633a 100644
--- a/test/test.js
+++ b/test/test.js
@@ -10425,6 +10425,12 @@
       assert.strictEqual(_.isError(symbol), false);
     });
 
+    QUnit.test('should return `false` for plain objects', function(assert) {
+      assert.expect(1);
+
+      assert.strictEqual(_.isError({ 'name': 'Error', 'message': '' }), false);
+    });
+
     QUnit.test('should work with an error object from another realm', function(assert) {
       assert.expect(1);