Add option to not use minified javascript and ease developpement.

docs/source/development.rst

@@ -23,3 +23,10 @@ You can then build the Javascript and CSS by running::
 
 This will automatically fetch the remaining dependencies (bower, less) and
 install them in a subdirectory.
+
+For quick iteration on the Notebook's Javascript you can deactivate the use of
+the bundled and minified Javacript by using the option
+``--NotebookApp.ignore_minified_js=True``.  This might though highly increase the
+number of requests that the browser make to the server, but can allow to test
+Javascript file modification without going through the compilation step that
+can take up to 30 sec.

notebook/base/handlers.py

@@ -117,7 +117,16 @@ class IPythonHandler(AuthenticatedHandler):
     
     Mostly property shortcuts to IPython-specific settings.
     """
-    
+
+
+    @property
+    def ignore_minified_js(self):
+        """Wether to user bundle in template. (*.min files)
+        
+        Mainly use for development and avoid file recompilation
+        """
+        return self.settings.get('ignore_minified_js', True)
+
     @property
     def config(self):
         return self.settings.get('config', None)
@@ -261,6 +270,7 @@ class IPythonHandler(AuthenticatedHandler):
             sys_info=sys_info,
             contents_js_source=self.contents_js_source,
             version_hash=self.version_hash,
+            ignore_minified_js=self.ignore_minified_js,
             **self.jinja_template_vars
         )
     

notebook/notebookapp.py

@@ -186,6 +186,7 @@ class NotebookWebApplication(web.Application):
                 'no_cache_paths': [url_path_join(base_url, 'static', 'custom')],
             },
             version_hash=version_hash,
+            ignore_minified_js=ipython_app.ignore_minified_js,
             
             # authentication
             cookie_secret=ipython_app.cookie_secret,
@@ -397,6 +398,11 @@ class NotebookApp(JupyterApp):
     # create requested profiles by default, if they don't exist:
     auto_create = Bool(True)
 
+    ignore_minified_js = Bool(False,
+            config=True,
+            help='Use minified JS file or not, mainly use during dev to avoid JS recompilation', 
+            )
+
     # file to be opened in the notebook server
     file_to_run = Unicode('', config=True)
 

notebook/templates/notebook.html

@@ -328,6 +328,10 @@ data-notebook-path="{{notebook_path}}"
 
 <script src="{{ static_url("components/text-encoding/lib/encoding.js") }}" charset="utf-8"></script>
 
-<script src="{{ static_url("notebook/js/main.min.js") }}" charset="utf-8"></script>
+{% if ignore_minified_js %}
+    <script src="{{ static_url("notebook/js/main.js") }}" charset="utf-8"></script>
+{% else %}
+    <script src="{{ static_url("notebook/js/main.min.js") }}" charset="utf-8"></script>
+{% endif %}
 
 {% endblock %}