Add await as reserved identifier

Author: FnControlOption

grammar.js

@@ -64,6 +64,7 @@ module.exports = grammar({
     [$.primary_expression, $.statement_block, 'object'],
     [$.import_statement, $.import],
     [$.export_statement, $.primary_expression],
+    [$.await_expression, $.primary_expression],
   ],
 
   conflicts: $ => [
@@ -1143,6 +1144,7 @@ module.exports = grammar({
       'get',
       'set',
       'async',
+      'await',
       'static',
       'export'
     ),

test/corpus/expressions.txt

@@ -319,6 +319,7 @@ Objects with reserved words for keys
   set: function () {},
   static: true,
   async: true,
+  await: true,
 };
 
 ---
@@ -340,6 +341,7 @@ Objects with reserved words for keys
       (property_identifier)
       (function (formal_parameters) (statement_block)))
     (pair (property_identifier) (true))
+    (pair (property_identifier) (true))
     (pair (property_identifier) (true)))))
 
 ============================================
@@ -422,6 +424,7 @@ Classes with reserved words as methods
 class Foo {
   catch() {}
   finally() {}
+  await() {}
 }
 
 ---
@@ -434,6 +437,10 @@ class Foo {
         (property_identifier)
         (formal_parameters)
         (statement_block))
+      (method_definition
+        (property_identifier)
+        (formal_parameters)
+        (statement_block))
       (method_definition
         (property_identifier)
         (formal_parameters)