From 981d3e40f84b2ee9c081a6cf7228c56e18fa8e92 Mon Sep 17 00:00:00 2001
From: Sebastian McKenzie <sebmck@gmail.com>
Date: Sun, 1 Feb 2015 16:20:32 +1100
Subject: [PATCH] add canRun check for playground transformers

---
 lib/6to5/transformation/transformer-pass.js | 2 ++
 lib/6to5/transformation/transformer.js      | 1 +
 2 files changed, 3 insertions(+)

diff --git a/lib/6to5/transformation/transformer-pass.js b/lib/6to5/transformation/transformer-pass.js
index 48d7866ef9..95a013f68f 100644
--- a/lib/6to5/transformation/transformer-pass.js
+++ b/lib/6to5/transformation/transformer-pass.js
@@ -41,6 +41,8 @@ TransformerPass.prototype.canRun = function () {
 
   if (transformer.experimental && !opts.experimental) return false;
 
+  if (transformer.playground && !opts.playground) return false;
+
   return true;
 };
 
diff --git a/lib/6to5/transformation/transformer.js b/lib/6to5/transformation/transformer.js
index 6ef8575369..4ec0c92803 100644
--- a/lib/6to5/transformation/transformer.js
+++ b/lib/6to5/transformation/transformer.js
@@ -17,6 +17,7 @@ var each            = require("lodash/collection/each");
 function Transformer(key, transformer, opts) {
   this.manipulateOptions = transformer.manipulateOptions;
   this.experimental      = !!transformer.experimental;
+  this.playground        = !!transformer.playground;
   this.secondPass        = !!transformer.secondPass;
   this.optional          = !!transformer.optional;
   this.handlers          = this.normalise(transformer);