Add explicit checks for existence of JS. Fixes #165

longclaw/core/templatetags/longclawcore_tags.py

@@ -1,16 +1,28 @@
+import os
 from django import template
 from longclaw import settings
 
 register = template.Library()
 
+CLIENT_PATH = os.path.join('core', 'js', 'longclawclient.bundle.js')
+VENDORS_PATH = os.path.join('core', 'js', 'vendors.bundle.js')
+
 @register.inclusion_tag("core/script.html")
 def longclaw_vendors_bundle():
-    return {'path': 'core/js/vendors.bundle.js'}
+    assert os.path.exists(
+        os.path.join(os.path.dirname(os.path.dirname(__file__)), 'static', VENDORS_PATH)
+    )
+    return {'path': VENDORS_PATH}
 
 @register.inclusion_tag("core/script.html")
 def longclaw_client_bundle():
-    return {'path': 'core/js/longclawclient.bundle.js'}
+    assert os.path.exists(
+        os.path.join(os.path.dirname(os.path.dirname(__file__)), 'static', CLIENT_PATH)
+    )
+    return {'path': CLIENT_PATH}
 
 @register.simple_tag
 def longclaw_api_url_prefix():
     return settings.API_URL_PREFIX
+
+