[jsinterp] `interpret_statement`: Match `attribute` before `indexing`

Authored by: bashonly

test/test_jsinterp.py

@@ -443,6 +443,9 @@ class TestJSInterpreter(unittest.TestCase):
         self._test('function f(){return "012345678".slice(-1, 1)}', '')
         self._test('function f(){return "012345678".slice(-3, -1)}', '67')
 
+    def test_splice(self):
+        self._test('function f(){var T = ["0", "1", "2"]; T["splice"](2, 1, "0")[0]; return T }', ['0', '1', '0'])
+
     def test_js_number_to_string(self):
         for test, radix, expected in [
             (0, None, '0'),

yt_dlp/jsinterp.py

@@ -611,10 +611,16 @@ class JSInterpreter:
                 =(?!=)(?P<expr>.*)$
             )|(?P<return>
                 (?!if|return|true|false|null|undefined|NaN)(?P<name>{_NAME_RE})$
+            )|(?P<attribute>
+                (?P<var>{_NAME_RE})(?:
+                    (?P<nullish>\?)?\.(?P<member>[^(]+)|
+                    \[(?P<member2>[^[\]]+
+                        (?:\[[^[\]]+
+                            (?:\[[^\]]+\])?\]
+                        )?)
+                    \])\s*
             )|(?P<indexing>
                 (?P<in>{_NAME_RE})\[(?P<idx>.+)\]$
-            )|(?P<attribute>
-                (?P<var>{_NAME_RE})(?:(?P<nullish>\?)?\.(?P<member>[^(]+)|\[(?P<member2>[^\[\]]+(?:\[[^\[\]]+(?:\[[^\]]+\])?\])?)\])\s*
             )|(?P<function>
                 (?P<fname>{_NAME_RE})\((?P<args>.*)\)$
             )''', expr)