Give complete info on bad compiler option value

elia · elia · commit d682b20541df · 2015-03-19T11:40:17.000+01:00
diff --git a/lib/opal/compiler.rb b/lib/opal/compiler.rb
@@ -54,7 +54,9 @@ def self.compiler_option(name, default_value, options = {})
       valid_values = options[:valid_values]
       define_method(mid || name) do
         value = @options.fetch(name) { default_value }
-        raise ArgumentError if valid_values and not(valid_values.include?(value))
+        if valid_values and not(valid_values.include?(value))
+          raise ArgumentError, "invalid option value: #{value.inspect} (valid values: #{values.inspect})"
+        end
         value
       end
     end
