From 0c12f63f171d8a6c8b354de54a7ff4a8d5fa486e Mon Sep 17 00:00:00 2001
From: Marijn Haverbeke <marijn@haverbeke.nl>
Date: Fri, 7 Sep 2018 22:19:36 +0200
Subject: [PATCH] Fix tokenizing of regexps after .of

Closes #727
---
 src/tokencontext.js   | 2 +-
 test/tests-harmony.js | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/tokencontext.js b/src/tokencontext.js
index 5151b3320..6395dd829 100644
--- a/src/tokencontext.js
+++ b/src/tokencontext.js
@@ -139,7 +139,7 @@ tt.star.updateContext = function(prevType) {
 
 tt.name.updateContext = function(prevType) {
   let allowed = false
-  if (this.options.ecmaVersion >= 6) {
+  if (this.options.ecmaVersion >= 6 && prevType != tt.dot) {
     if (this.value === "of" && !this.exprAllowed ||
         this.value === "yield" && this.inGeneratorContext())
       allowed = true
diff --git a/test/tests-harmony.js b/test/tests-harmony.js
index 0040e0a51..9b6da12be 100644
--- a/test/tests-harmony.js
+++ b/test/tests-harmony.js
@@ -16241,3 +16241,5 @@ test('for ([...foo, bar].baz in qux);', {
 testFail("var f;\nfunction f() {}", "Identifier 'f' has already been declared (2:9)", {ecmaVersion: 6, sourceType: "module"});
 
 test("function f() { var x; function x() {} }", {}, {ecmaVersion: 6, sourceType: "module"})
+
+test("a.of / 2", {}, {ecmaVersion: 6})