[language-typescript] Several fixes…

* Ensure private methods like `#foo` are included in lists of symbols.
* Scope `void` as a unary operator.
* Properly scope rest object properties in function definitions.

packages/language-typescript/grammars/common/highlights.scm

@@ -71,6 +71,11 @@
     (shorthand_property_identifier_pattern) @variable.parameter.destructuring._LANG_)
     (#set! capture.final))
 
+(required_parameter
+  pattern: (object_pattern
+    (rest_pattern (identifier) @variable.parameter.destructuring.rest._LANG_))
+    (#set! capture.final))
+
 (required_parameter
   pattern: (object_pattern
     (object_assignment_pattern
@@ -860,7 +865,7 @@
 (binary_expression
   ["/" "+" "-" "*" "**" "%"] @keyword.operator.arithmetic._LANG_)
 
-(unary_expression ["+" "-"] @keyword.operator.unary._LANG_)
+(unary_expression ["+" "-" "void"] @keyword.operator.unary._LANG_)
 
 (binary_expression
   [

packages/language-typescript/grammars/common/tags.scm

@@ -7,11 +7,11 @@
   (#set! symbol.tag "function")) @definition.function
 
 (method_definition
-  name: (property_identifier) @name
+  name: [(property_identifier) (private_property_identifier)] @name
   (#set! symbol.tag "method")) @definition.method
 
 (abstract_method_signature
-  name: (property_identifier) @name
+  name: [(property_identifier) (private_property_identifier)] @name
   (#set! symbol.tag "method")) @definition.method
 
 (class_declaration