unified: Introduced named property_binding node

This groups together a bunch of related values that would otherwise be
impossible to match up correctly.

unified/extractor/tree-sitter-swift/grammar.js

@@ -1400,10 +1400,10 @@ module.exports = grammar({
       prec.right(
         seq(
           $._possibly_async_binding_pattern_kind,
-          sep1($._single_modifierless_property_declaration, ",")
+          sep1(field("declarator", $.property_binding), ",")
         )
       ),
-    _single_modifierless_property_declaration: ($) =>
+    property_binding: ($) =>
       prec.left(
         seq(
           field("name", alias($._no_expr_pattern_already_bound, $.pattern)),

unified/extractor/tree-sitter-swift/node-types.yml

@@ -507,15 +507,17 @@ named:
     operation: ["&", "+", "++", "-", "--", ".", bang, custom_operator, "~"]
     target: expression
   property_behavior_modifier:
+  property_binding:
+    computed_value?: computed_property
+    name: pattern
+    observers?: willset_didset_block
+    type?: type_annotation
+    type_constraints?: type_constraints
+    value?: expression
   property_declaration:
     binding: value_binding_pattern
-    computed_value*: computed_property
+    declarator+: property_binding
     modifiers*: [attribute, inheritance_modifier, modifiers, ownership_modifier, property_behavior_modifier]
-    name+: pattern
-    observers*: willset_didset_block
-    type*: type_annotation
-    type_constraints*: type_constraints
-    value*: expression
   property_modifier:
   protocol_body:
     member*: protocol_member_declaration