From 5dd4db7676b77fd660251563688b6d1938de86d5 Mon Sep 17 00:00:00 2001
From: Rob <rob@codecombat.com>
Date: Fri, 1 Jul 2016 16:44:16 -0700
Subject: [PATCH] Correctly feature detect WeakMap.

---
 app/assets/javascripts/workers/aether_worker.js | 2 +-
 app/assets/javascripts/workers/worker_world.js  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/app/assets/javascripts/workers/aether_worker.js b/app/assets/javascripts/workers/aether_worker.js
index 4d2db81d4..80c72bf54 100644
--- a/app/assets/javascripts/workers/aether_worker.js
+++ b/app/assets/javascripts/workers/aether_worker.js
@@ -5,7 +5,7 @@ importScripts("/javascripts/lodash.js", "/javascripts/aether.js");
 
 try {
   //Detect very modern javascript support.
-  (0,eval("'use strict'; let test = (class Test { *gen(a=7) { yield yield * () => WeakMap; } });"));
+  (0,eval("'use strict'; let test = WeakMap && (class Test { *gen(a=7) { yield yield * () => true ; } });"));
   console.log("Modern javascript detected, aw yeah!");
   self.importScripts('/javascripts/esper.modern.js');  
 } catch (e) {
diff --git a/app/assets/javascripts/workers/worker_world.js b/app/assets/javascripts/workers/worker_world.js
index 154678395..2004f7c4e 100644
--- a/app/assets/javascripts/workers/worker_world.js
+++ b/app/assets/javascripts/workers/worker_world.js
@@ -66,7 +66,7 @@ self.console = console;
 self.importScripts('/javascripts/lodash.js', '/javascripts/world.js', '/javascripts/aether.js');
 try {
   //Detect very modern javascript support.
-  (0,eval("'use strict'; let test = (class Test { *gen(a=7) { yield yield * () => WeakMap; } });"));
+  (0,eval("'use strict'; let test = WeakMap && (class Test { *gen(a=7) { yield yield * () => true ; } });"));
   console.log("Modern javascript detected, aw yeah!");
   self.importScripts('/javascripts/esper.modern.js');  
 } catch (e) {