[utils] js_to_json: Handle Array objects

Authored by: Grub4K, std-move

Co-authored-by: std-move <26625259+std-move@users.noreply.github.com>
Co-authored-by: Simon Sawicki <accounts@grub4k.xyz>

test/test_utils.py

@@ -1218,6 +1218,12 @@ def test_js_to_json_template_literal(self):
         self.assertEqual(js_to_json('`${name}"${name}"`', {'name': '5'}), '"5\\"5\\""')
         self.assertEqual(js_to_json('`${name}`', {}), '"name"')
 
+    def test_js_to_json_map_array_constructors(self):
+        self.assertEqual(json.loads(js_to_json('new Map([["a", 5]])')), {'a': 5})
+        self.assertEqual(json.loads(js_to_json('Array(5, 10)')), [5, 10])
+        self.assertEqual(json.loads(js_to_json('new Array(15,5)')), [15, 5])
+        self.assertEqual(json.loads(js_to_json('new Map([Array(5, 10),new Array(15,5)])')), {'5': 10, '15': 5})
+
     def test_extract_attributes(self):
         self.assertEqual(extract_attributes('<e x="y">'), {'x': 'y'})
         self.assertEqual(extract_attributes("<e x='y'>"), {'x': 'y'})

yt_dlp/utils/_utils.py

@@ -2727,6 +2727,7 @@ def fix_kv(m):
     def create_map(mobj):
         return json.dumps(dict(json.loads(js_to_json(mobj.group(1) or '[]', vars=vars))))
 
+    code = re.sub(r'(?:new\s+)?Array\((.*?)\)', r'[\g<1>]', code)
     code = re.sub(r'new Map\((\[.*?\])?\)', create_map, code)
     if not strict:
         code = re.sub(r'new Date\((".+")\)', r'\g<1>', code)