lib/uglifier.rb in uglifier-0.5.3 vs lib/uglifier.rb in uglifier-0.5.4

@@ -21,18 +21,19 @@
       :space_colon => 0
     }
   }
 
   SourcePath = File.expand_path("../uglify.js", __FILE__)
+  ES5FallbackPath = File.expand_path("../es5.js", __FILE__)
 
   def self.compile(source, options = {})
     self.new(options).compile(source)
   end
 
   # Create new instance of Uglifier with given options
   def initialize(options = {})
     @options = DEFAULTS.merge(options)
-    @context = ExecJS.compile(File.read(SourcePath))
+    @context = ExecJS.compile(File.read(ES5FallbackPath) + File.read(SourcePath))
   end
 
   def compile(source)
     source = source.respond_to?(:read) ? source.read : source.to_s