From 79dccc4d3274ffae17cfb54ce08703a98b1d4fe0 Mon Sep 17 00:00:00 2001
From: Kirill Fomichev <fanatid@ya.ru>
Date: Sat, 10 Aug 2019 19:36:47 +0300
Subject: [PATCH] Update BN#inspect for Symbols (#225)

---
 lib/bn.js | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/lib/bn.js b/lib/bn.js
index 2be2c25..bba8981 100644
--- a/lib/bn.js
+++ b/lib/bn.js
@@ -363,9 +363,17 @@
     return this;
   };
 
-  BN.prototype.inspect = function inspect () {
+  // Check Symbol.for because not everywhere where Symbol defined
+  // See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol#Browser_compatibility
+  if (typeof Symbol !== 'undefined' && typeof Symbol.for === 'function') {
+    BN.prototype[Symbol.for('nodejs.util.inspect.custom')] = inspect;
+  } else {
+    BN.prototype.inspect = inspect;
+  }
+
+  function inspect () {
     return (this.red ? '<BN-R: ' : '<BN: ') + this.toString(16) + '>';
-  };
+  }
 
   /*