From 7649f1555ed75ee0217b934f179c1d842ee04c1b Mon Sep 17 00:00:00 2001
From: Paulo Rafael Feodrippe <pfeodrippe@gmail.com>
Date: Sun, 24 May 2020 16:01:38 -0300
Subject: [PATCH] Check nullity for __eq__ and __ne__

`__eq__` for `Array` checks for the lenght of `b`, but `b` could be `null`
---
 transcrypt/modules/org/transcrypt/__builtin__.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/transcrypt/modules/org/transcrypt/__builtin__.js b/transcrypt/modules/org/transcrypt/__builtin__.js
index 0ca180861..f8901f639 100644
--- a/transcrypt/modules/org/transcrypt/__builtin__.js
+++ b/transcrypt/modules/org/transcrypt/__builtin__.js
@@ -2104,7 +2104,7 @@ export function __and__ (a, b) {
 // Overloaded binary compare
 
 export function __eq__ (a, b) {
-    if (typeof a == 'object' && '__eq__' in a) {
+    if (b != null && typeof a == 'object' && '__eq__' in a) {
         return a.__eq__ (b);
     }
     else {
@@ -2113,7 +2113,7 @@ export function __eq__ (a, b) {
 };
 
 export function __ne__ (a, b) {
-    if (typeof a == 'object' && '__ne__' in a) {
+    if (b != null && typeof a == 'object' && '__ne__' in a) {
         return a.__ne__ (b);
     }
     else {