js domain: Remove extra brackets from function arguments and errors (#13569)

tests/test_domains/test_domain_js.py

@@ -26,6 +26,10 @@ from sphinx.testing import restructuredtext
 from sphinx.testing.util import assert_node
 from sphinx.writers.text import STDINDENT
 
+TYPE_CHECKING = False
+if TYPE_CHECKING:
+    from sphinx.testing.util import SphinxTestApp
+
 
 @pytest.mark.sphinx('dummy', testroot='domain-js')
 def test_domain_js_xrefs(app):
@@ -892,3 +896,19 @@ def test_domain_js_javascript_trailing_comma_in_multi_line_signatures_in_text(ap
         expected_f,
     )
     assert expected_parameter_list_foo in content
+
+
+# See: https://github.com/sphinx-doc/sphinx/issues/13217
+@pytest.mark.sphinx('html', testroot='_blank')
+def test_js_function_parentheses_in_arguments_and_errors(app: SphinxTestApp) -> None:
+    text = """\
+.. js:function:: $.getJSON(href)
+
+   :param string href:
+   :throws err:
+"""
+    doctree = restructuredtext.parse(app, text)
+    refnodes = list(doctree.findall(addnodes.pending_xref))
+    assert len(refnodes) == 2
+    assert_node(refnodes[0], [addnodes.pending_xref, nodes.literal, 'string'])
+    assert_node(refnodes[1], [addnodes.pending_xref, nodes.literal, 'err'])