Merge pull request #264 from nojaf/nested-types

Add support for v12 nested types

Author: nojaf

grammar.js

@@ -106,6 +106,7 @@ module.exports = grammar({
     [$._reserved_identifier, $.function],
     [$.exception_pattern, $.or_pattern],
     [$.type_binding, $._inline_type],
+    [$._type, $._non_function_inline_type],
     [$._module_structure, $.parenthesized_module_expression],
     [$._record_type_member, $._object_type_member],
   ],
@@ -283,6 +284,7 @@ module.exports = grammar({
         $.tuple_type,
         $.polyvar_type,
         $.object_type,
+        $.record_type,
         $.generic_type,
         $.unit_type,
         $.module_pack,