From ac2dfced36e7be9c9b8f2196deb4ee7338a22b33 Mon Sep 17 00:00:00 2001
From: Sebastian McKenzie <sebmck@gmail.com>
Date: Wed, 11 Feb 2015 10:57:54 +1100
Subject: [PATCH] add support for class initializer properties - 6to5/6to5#619

---
 acorn.js | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/acorn.js b/acorn.js
index 1726702a5a..c006844621 100644
--- a/acorn.js
+++ b/acorn.js
@@ -3674,8 +3674,20 @@
       } else {
         method.kind = "";
       }
+
+      var classProperty = false;
+
       if (tokType === _colon) {
         method.typeAnnotation = parseTypeAnnotation();
+        classProperty = true;
+      }
+
+      if (options.playground && eat(_eq)) {
+        method.value = parseMaybeAssign();
+        classProperty = true;
+      }
+
+      if (classProperty) {
         semicolon();
         classBody.body.push(finishNode(method, "ClassProperty"));
       } else {