allow to disable javacsript wrapper

docs/configuration.rst

@@ -205,3 +205,4 @@ All javascript output is wrapped in an anonymous function : ::
 
 This safety wrapper, make it difficult to pollute the global namespace by accident and improve performance.
 
+You can override this behavior by setting ``PIPELINE_DISABLE_WRAPPER`` to ``True``.

pipeline/compressors/__init__.py

@@ -58,7 +58,9 @@ class Compressor(object):
         js = self.concatenate(paths)
         if templates:
             js = js + self.compile_templates(templates)
-        js = "(function() { %s }).call(this);" % js
+
+        if not settings.PIPELINE_DISABLE_WRAPPER:
+            js = "(function() { %s }).call(this);" % js
 
         compressor = self.js_compressor
         if compressor:

pipeline/conf/settings.py

@@ -23,6 +23,8 @@ PIPELINE_TEMPLATE_NAMESPACE = getattr(settings, 'PIPELINE_TEMPLATE_NAMESPACE', "
 PIPELINE_TEMPLATE_EXT = getattr(settings, 'PIPELINE_TEMPLATE_EXT', ".jst")
 PIPELINE_TEMPLATE_FUNC = getattr(settings, 'PIPELINE_TEMPLATE_FUNC', "template")
 
+PIPELINE_DISABLE_WRAPPER = getattr(settings, 'PIPELINE_DISABLE_WRAPPER', False)
+
 PIPELINE_CSSTIDY_BINARY = getattr(settings, 'PIPELINE_CSSTIDY_BINARY', '/usr/local/bin/csstidy')
 PIPELINE_CSSTIDY_ARGUMENTS = getattr(settings, 'PIPELINE_CSSTIDY_ARGUMENTS', '--template=highest')