Restore 'noindex' support for JS, Python domains

CHANGES.rst

@@ -99,7 +99,9 @@ Bugs fixed
 * #12796: Enable parallel reading if requested,
   even if there are fewer than 6 documents.
   Patch by Matthias Geier.
-
+* #12844: Restore support for ``:noindex:`` for the :rst:dir:`js:module`
+  and :rst:dir:`py:module` directives.
+  Patch by Stephen Finucane.
 
 Testing
 -------

sphinx/domains/javascript.py

@@ -307,6 +307,12 @@ class JSModule(SphinxDirective):
     }
 
     def run(self) -> list[Node]:
+        # Copy old option names to new ones
+        # xref RemovedInSphinx90Warning
+        # # deprecate noindex in Sphinx 9.0
+        if 'no-index' not in self.options and 'noindex' in self.options:
+            self.options['no-index'] = self.options['noindex']
+
         mod_name = self.arguments[0].strip()
         self.env.ref_context['js:module'] = mod_name
         no_index = 'no-index' in self.options

sphinx/domains/python/__init__.py

@@ -449,6 +449,12 @@ class PyModule(SphinxDirective):
     }
 
     def run(self) -> list[Node]:
+        # Copy old option names to new ones
+        # xref RemovedInSphinx90Warning
+        # # deprecate noindex in Sphinx 9.0
+        if 'no-index' not in self.options and 'noindex' in self.options:
+            self.options['no-index'] = self.options['noindex']
+
         domain = cast(PythonDomain, self.env.get_domain('py'))
 
         modname = self.arguments[0].strip()