fix(grammar): adapt to upstream regex change

Author: clason

grammar.js

@@ -95,30 +95,21 @@ module.exports = grammar({
     conflicts: $ => [
         [$._record_literal_no_const, $.record_field],
         [$.block, $.set_or_map_literal],
-        [$._primary, $.function_signature],
         [$._type_name, $._primary, $.function_signature],
         [$._primary, $._type_name],
-        [$.variable_declaration, $.initialized_variable_definition,],
-        [$._final_const_var_or_type, $.function_signature,],
-        [$._primary, $._function_formal_parameter],
         [$._primary, $._simple_formal_parameter],
-        [$._primary, $.labeled_statement],
         [$._primary, $._type_name, $._function_formal_parameter],
-        [$._final_const_var_or_type, $._function_formal_parameter],
         [$._primary, $.constructor_param],
         [$._normal_formal_parameters],
         [$._declared_identifier],
         [$.equality_expression],
-        [$._primary, $._type_name, $._simple_formal_parameter],
         [$.record_type_field, $._function_formal_parameter, $._var_or_type],
         [$.typed_identifier, $._var_or_type, $._function_formal_parameter],
         [$._type_name, $._simple_formal_parameter],
         [$._type_not_function, $._type_not_void],
         [$.switch_statement_case],
         // [$._argument_list],
-        [$.variable_declaration, $.initialized_identifier,],
         [$.declaration, $._external_and_static],
-        [$.method_signature, $._static_or_covariant],
         [$.constructor_signature, $._formal_parameter_part],
         // [$._type_not_function, $._type_not_void],
         [$._cascade_subsection],
@@ -130,11 +121,8 @@ module.exports = grammar({
         [$.type_arguments, $.relational_operator],
         [$.prefix_operator, $.constant_pattern],
         [$._primary, $.constant_pattern, $._type_name],
-        [$.parenthesized_expression, $.if_statement],
-        [$._top_level_definition, $.lambda_expression],
         [$._literal, $.constant_pattern],
         [$._primary, $.constant_pattern],
-        [$._type_not_void_not_function, $.qualified],
         [$._final_var_or_type],
         [$._primary, $.constant_pattern, $._type_name, $._simple_formal_parameter],
         [$._parenthesized_pattern, $._pattern_field],
@@ -146,62 +134,42 @@ module.exports = grammar({
         [$._var_or_type, $._final_var_or_type, $._function_formal_parameter],
         [$.set_or_map_literal, $.map_pattern],
         [$.list_literal, $.list_pattern],
-        [$._real_expression, $._pattern],
         [$.constant_pattern, $._type_name],
         [$._pattern_field, $.label],
-        [$._pattern],
         [$.constructor_tearoff, $._identifier_or_new],
         [$._primary, $.constant_pattern, $._simple_formal_parameter],
         [$.record_type_field, $._final_var_or_type],
-        [$._var_or_type, $._final_var_or_type, $.function_signature],
-        [$._top_level_definition, $._var_or_type, $.function_signature],
         [$.set_or_map_literal, $.constant_pattern],
         [$.list_literal, $.constant_pattern],
-        [$.set_or_map_literal, $.block, $.map_pattern],
         [$._var_or_type, $.function_signature],
         [$._var_or_type, $._function_formal_parameter],
         [$.relational_operator, $.type_arguments, $.type_parameters],
         [$._var_or_type],
-        [$._top_level_definition, $._var_or_type],
-        [$._top_level_definition, $._final_const_var_or_type],
-        [$._top_level_definition, $.const_object_expression, $._final_const_var_or_type],
         [$._final_const_var_or_type, $.const_object_expression],
         [$._final_const_var_or_type],
         [$.type_parameter, $._type_name],
         [$._normal_formal_parameter],
-        [$.library_name, $.dotted_identifier_list],
-        [$._top_level_definition, $.inferred_type],
-        [$._final_const_var_or_type, $._top_level_definition, $.function_signature],
         [$._assignable_selector_part, $.selector],
         [$._assignable_selector_part, $._postfix_expression],
-        [$._assignable_selector_part, $.postfix_expression],
         [$._primary, $.assignable_expression],
         [$._simple_formal_parameter, $.assignable_expression],
         // [$._type_name, $._primary, $.assignable_expression],
-        [$.assignable_expression, $.postfix_expression],
         [$.assignable_expression, $._postfix_expression],
         // [$._type_name, $.assignable_expression],
         // [$._type_name, $.function_signature],
         [$._type_name, $._function_formal_parameter],
         [$._type_name],
         // [$.assignment_expression, $._expression],
-        [$.assignable_expression],
-        [$.method_signature, $.declaration, $._static_or_covariant],
-        [$.type_arguments],
         [$._primary, $._type_name, $.assignable_expression],
-        [$._primary, $._type_name, $.assignable_expression, $.function_signature],
-        [$._primary, $._type_name, $.assignable_expression, $._function_formal_parameter],
         [$._type_name, $.function_signature],
         // [$.relational_operator, $._shift_operator],
         [$.declaration, $._external],
         [$.relational_expression],
-        [$.factory_constructor_signature, $.redirecting_factory_constructor_signature],
         [$._function_type_tail],
         [$._type_not_void_not_function, $._function_type_tail],
         [$._type_not_void],
         [$._type_not_void_not_function],
         [$.super_formal_parameter, $.unconditional_assignable_selector],
-        [$.function_signature],
     ],
 
     word: $ => $.identifier,
@@ -508,7 +476,7 @@ module.exports = grammar({
                 /[0-7]{1,3}/,
                 /x[0-9a-fA-F]{2}/,
                 /u[0-9a-fA-F]{4}/,
-                /u{[0-9a-fA-F]+}/
+                /u\{[0-9a-fA-F]+\}/
             )
         )),
         escape_sequence: $ => $._unused_escape_sequence,