lib/linguist/heuristics.rb in github-linguist-4.8.1 vs lib/linguist/heuristics.rb in github-linguist-4.8.2

@@ -125,9 +125,17 @@
         Language["ECLiPSe"]
       elsif data.include?(":=")
         Language["ECL"]
       end
     end
+    
+    disambiguate ".es" do |data|
+      if /^\s*(?:%%|main\s*\(.*?\)\s*->)/.match(data)
+        Language["Erlang"]
+      elsif /(?:\/\/|("|')use strict\1|export\s+default\s|\/\*.*?\*\/)/m.match(data)
+        Language["JavaScript"]
+      end
+    end
 
     disambiguate ".for", ".f" do |data|
       if /^: /.match(data)
         Language["Forth"]
       elsif /^([c*][^abd-z]|      (subroutine|program|end)\s|\s*!)/i.match(data)