get_null() was wrong

addons/bson/bson.gd

@@ -2,7 +2,10 @@
 # This file is the BSON serializer for the Godot Engine,
 # published under the MIT license. https://opensource.org/license/MIT
 
-class_name BSON
+extends Node
+# Unfortunately, this has to be a node in order to be a singleton.
+# I'd rather BSON wasn't in the scenetree, but it seems like that's
+# the only way to do this. Hopefully this will change in the future.
 
 
 static func to_bson(data: Dictionary) -> PackedByteArray:
@@ -30,6 +33,8 @@ static func get_byte_type(value: Variant) -> int:
 			return 0x03
 		TYPE_BOOL:
 			return 0x08
+		TYPE_NIL:
+			return 0x0a
 		_:
 			push_error("BSON serialization error: Unsupported type: ", typeof(value))
 			return 0x00
@@ -212,6 +217,7 @@ class Deserializer:
 				0x08: object[key] = get_bool()
 				0x04: object[key] = read_array()
 				0x03: object[key] = read_dictionary()
+				0x0a: object[key] = null
 				_:
 					push_error("BSON deserialization error: Unsupported type "
 						+ str(type)
@@ -259,6 +265,7 @@ class Deserializer:
 				0x08: array.append(get_bool())
 				0x04: array.append(read_array())
 				0x03: array.append(read_dictionary())
+				0x0a: array.append(null)
 				_: push_error("BSON deserialization error: Unsupported type: " + str(type))
 		if iter > expected_size:
 			push_warning("BSON deserialization warning: Array is the wrong length."

project.godot

@@ -15,6 +15,10 @@ run/main_scene="res://BSON Examples/dunk.tscn"
 config/features=PackedStringArray("4.3", "Forward Plus")
 config/icon="res://icon.svg"
 
+[autoload]
+
+BSON="*res://addons/bson/bson.gd"
+
 [editor_plugins]
 
 enabled=PackedStringArray("res://addons/bson/plugin.cfg")