x

* from yt-dlp/yt-dlp#12313
* also fix d7c2708

test/test_jsinterp.py

@@ -212,9 +212,10 @@ class TestJSInterpreter(unittest.TestCase):
         # undefined
         self._test(jsi, NaN, args=[JS_Undefined])
         # y,m,d, ... - may fail with older dates lacking DST data
-        jsi = JSInterpreter('function f() { return new Date(%s); }'
+        self.assertAlmostEqual(JSInterpreter(
-                            % ('2024, 5, 29, 2, 52, 12, 42',))
+            'function f() { return new Date(%s); }'
-        self._test(jsi, 1719625932042)
+            % ('2024, 5, 29, 2, 52, 12, 42',)).call_function('f'),
+            1719625932042 + time.timezone * 1000, places=0)
         # no arg
         self.assertAlmostEqual(JSInterpreter(
             'function f() { return new Date() - 0; }').call_function('f'),

youtube_dl/jsinterp.py

@@ -154,6 +154,7 @@ def _js_to_primitive(v):
     )
 
 
+# more exact: yt-dlp/yt-dlp#12110
 def _js_toString(v):
     return (
         'undefined' if v is JS_Undefined
@@ -162,7 +163,7 @@ def _js_toString(v):
         else 'null' if v is None
         # bool <= int: do this first
         else ('false', 'true')[v] if isinstance(v, bool)
-        else re.sub(r'\.?0*$', '', '{0:.7f}'.format(v)) if isinstance(v, compat_numeric_types)
+        else re.sub(r'(?<=\d)\.?0*$', '', '{0:.7f}'.format(v)) if isinstance(v, compat_numeric_types)
         else _js_to_primitive(v))
 
 
@@ -546,7 +547,7 @@ class JSInterpreter(object):
                 return "Invalid Date"
 
         def valueOf(self):
-            return _NaN if self._t is None else int(self._t)
+            return _NaN if self._t is None else self._t
 
     @classmethod
     def __op_chars(cls):