Issue 480 - Add .map file extension support to dash

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.31.2 - 2018-12-06
+## Added
+- Support for .map file extension [#478](https://github.com/plotly/dash/pull/478)
+
 ## 0.31.1 - 2018-11-29
 ## Fixed
 - Fix `_imports_.py` indentation generation. [#473](https://github.com/plotly/dash/pull/473/files)
@@ -101,7 +105,7 @@
 - Take configs values from init or environ variables (Prefixed with `DASH_`). [#322](https://github.com/plotly/dash/pull/322)
 
 ## Fixed
-- Take `requests_pathname_prefix` config when creating scripts tags. 
+- Take `requests_pathname_prefix` config when creating scripts tags.
 - `requests/routes_pathname_prefix` must starts and end with `/`.
 - `requests_pathname_prefix` must ends with `routes_pathname_prefix`. If you supplied both `requests` and `routes` pathname before this update, make sure `requests_pathname_prefix` ends with the same value as `routes_pathname_prefix`.
 - `url_base_pathname` set both `requests/routes` pathname, cannot supply it with either `requests` or `routes` pathname prefixes.

dash/dash.py

@@ -352,6 +352,7 @@ def serve_routes(self):
             mimetype='application/json'
         )
 
+    # pylint: disable=too-many-branches
     def _collect_and_register_resources(self, resources):
         # now needs the app context.
         # template in the necessary component suite JS bundles
@@ -378,15 +379,25 @@ def _relative_url_path(relative_package_path='', namespace=''):
 
         srcs = []
         for resource in resources:
+            is_dynamic_resource = 'dynamic' in resource and \
+                resource.get('dynamic')
+
             if 'relative_package_path' in resource:
                 if isinstance(resource['relative_package_path'], str):
-                    srcs.append(_relative_url_path(**resource))
+                    path = _relative_url_path(
+                        resource['relative_package_path'],
+                        resource['namespace']
+                    )
+                    if not is_dynamic_resource:
+                        srcs.append(path)
                 else:
                     for rel_path in resource['relative_package_path']:
-                        srcs.append(_relative_url_path(
+                        path = _relative_url_path(
                             relative_package_path=rel_path,
                             namespace=resource['namespace']
-                        ))
+                        )
+                        if not is_dynamic_resource:
+                            srcs.append(path)
             elif 'external_url' in resource:
                 if isinstance(resource['external_url'], str):
                     srcs.append(resource['external_url'])
@@ -492,7 +503,8 @@ def serve_component_suites(self, package_name, path_in_package_dist):
 
         mimetype = ({
             'js': 'application/JavaScript',
-            'css': 'text/css'
+            'css': 'text/css',
+            'map': 'application/json'
         })[path_in_package_dist.split('.')[-1]]
 
         headers = {

dash/resources.py

@@ -19,6 +19,8 @@ def _filter_resources(self, all_resources, dev_bundles=False):
         filtered_resources = []
         for s in all_resources:
             filtered_resource = {}
+            if 'dynamic' in s:
+                filtered_resource['dynamic'] = s['dynamic']
             if 'namespace' in s:
                 filtered_resource['namespace'] = s['namespace']
             if 'external_url' in s and not self.config.serve_locally:

dash/version.py

@@ -1 +1 @@
-__version__ = '0.31.1'
+__version__ = '0.31.2'