Upgraded youtube_download plugin

plugins/youtube_download/yt_dlp/jsinterp.py

@@ -18,6 +18,14 @@ from .utils import (
 )
 
 
+def int_to_int32(n):
+    """Converts an integer to a signed 32-bit integer"""
+    n &= 0xFFFFFFFF
+    if n & 0x80000000:
+        return n - 0x100000000
+    return n
+
+
 def _js_bit_op(op):
     def zeroise(x):
         if x in (None, JS_Undefined):
@@ -28,7 +36,7 @@ def _js_bit_op(op):
         return int(float(x))
 
     def wrapped(a, b):
-        return op(zeroise(a), zeroise(b)) & 0xffffffff
+        return int_to_int32(op(int_to_int32(zeroise(a)), int_to_int32(zeroise(b))))
 
     return wrapped
 
@@ -368,6 +376,10 @@ class JSInterpreter:
         if not _OPERATORS.get(op):
             return right_val
 
+        # TODO: This is only correct for str+str and str+number; fix for str+array, str+object, etc
+        if op == '+' and (isinstance(left_val, str) or isinstance(right_val, str)):
+            return f'{left_val}{right_val}'
+
         try:
             return _OPERATORS[op](left_val, right_val)
         except Exception as e:
@@ -377,7 +389,7 @@ class JSInterpreter:
         if idx == 'length':
             return len(obj)
         try:
-            return obj[int(idx)] if isinstance(obj, list) else obj[idx]
+            return obj[int(idx)] if isinstance(obj, list) else obj[str(idx)]
         except Exception as e:
             if allow_undefined:
                 return JS_Undefined