From a6a0609b058e1a574abdee821eeeb02b324ee022 Mon Sep 17 00:00:00 2001
From: Aditya Arora <arora.aditya520@gmail.com>
Date: Sun, 10 Oct 2021 09:58:47 -0300
Subject: [PATCH] internal/jsre: handle null and undefined to prevent crash
 (#23701)

This prevents the console from crashing when auto-completing on
a variable or property that is null or undefined.

Fixes #23693
---
 internal/jsre/completion.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/internal/jsre/completion.go b/internal/jsre/completion.go
index 2c105184c..538fca298 100644
--- a/internal/jsre/completion.go
+++ b/internal/jsre/completion.go
@@ -44,7 +44,7 @@ func getCompletions(vm *goja.Runtime, line string) (results []string) {
 	obj := vm.GlobalObject()
 	for i := 0; i < len(parts)-1; i++ {
 		v := obj.Get(parts[i])
-		if v == nil {
+		if v == nil || goja.IsNull(v) || goja.IsUndefined(v) {
 			return nil // No object was found
 		}
 		obj = v.ToObject(vm)