feature: @putout/operator-keyword: async

Author: coderaiser

packages/operator-keyword/lib/keyword.js

@@ -40,6 +40,7 @@ const statements = [
     ...declarations,
     ...moduleDeclarations,
     ...typescriptReserved,
+    'async',
     'break',
     'continue',
     'for',

packages/operator-keyword/lib/keyword.spec.js

@@ -170,3 +170,10 @@ test('putout: operator: isKeyword: module: no', (t) => {
     t.notOk(result);
     t.end();
 });
+
+test('putout: operator: isKeyword: async', (t) => {
+    const result = isKeyword('async');
+    
+    t.ok(result);
+    t.end();
+});