From 01148a1df881b7b1f2cd92626bbdb330176ca1b1 Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Wed, 12 Jul 2017 07:42:33 -0700
Subject: [PATCH] =?UTF-8?q?Avoid=20using=20the=20values=20toString=20metho?=
 =?UTF-8?q?d=20in=20=5F.invert=20if=20it=E2=80=99s=20not=20a=20function.?=
 =?UTF-8?q?=20[closes=20#3260]?=
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---
 invert.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/invert.js b/invert.js
index 3cb243054..1078a2534 100644
--- a/invert.js
+++ b/invert.js
@@ -1,3 +1,5 @@
+const toString = Object.prototype.toString
+
 /**
  * Creates an object composed of the inverted keys and values of `object`.
  * If `object` contains duplicate values, subsequent values overwrite
@@ -17,6 +19,9 @@
 function invert(object) {
   const result = {}
   Object.keys(object).forEach((value, key) => {
+    if (value != null && typeof value.toString != 'function') {
+      value = toString.call(value)
+    }
     result[value] = key
   })
   return result