[devdocsgjs/main: 643/1867] Cache debug.js when not running in production

[Andy Holmes <andyholmes src gnome org>]

commit 7af10a020d6d1200696eb77ae01b483e8d392d17
Author: Jasper van Merle <jaspervmerle gmail com>
Date:   Sun Jul 7 14:19:04 2019 +0200

    Cache debug.js when not running in production

 docs/maintainers.md         | 2 +-
 views/service-worker.js.erb | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/docs/maintainers.md b/docs/maintainers.md
index 1369816d..455e6501 100644
--- a/docs/maintainers.md
+++ b/docs/maintainers.md
@@ -84,7 +84,7 @@ In addition to the [publicly-documented commands](https://github.com/freeCodeCam
 
 Once docs have been uploaded via `thor docs:upload` (if applicable), deploying DevDocs is as simple as 
running `git push heroku master`. See [Heroku's documentation](https://devcenter.heroku.com/articles/git) for 
more information.
 
-- If you're deploying documentation updates, verify that the documentations work properly once the deploy is 
done (you will need to reload [devdocs.io](https://devdocs.io/) a couple times for the application cache to 
update and the new version to load).
+- If you're deploying documentation updates, verify that the documentations work properly once the deploy is 
done (you will need to reload [devdocs.io](https://devdocs.io/) a couple times for the service worker to 
update and the new version to load).
 - If you're deploying frontend changes, monitor [Sentry](https://sentry.io/devdocs/devdocs-js/) for new JS 
errors once the deploy is done.
 - If you're deploying server changes, monitor New Relic (accessible through [the Heroku 
dashboard](https://dashboard.heroku.com/apps/devdocs)) for Ruby exceptions and throughput or response time 
changes once the deploy is done.
 
diff --git a/views/service-worker.js.erb b/views/service-worker.js.erb
index e9028f4d..e2986ede 100644
--- a/views/service-worker.js.erb
+++ b/views/service-worker.js.erb
@@ -14,7 +14,8 @@ const cachePaths = [
   '/images/webapp-icon-256.png',
   '/images/webapp-icon-512.png',
   '<%= manifest_asset_urls.join "',\n  '" %>',
-  '<%= doc_index_urls.join "',\n  '" %>',
+  '<%= doc_index_urls.join "',\n  '" %>',<% unless App.production? %>
+  '<%= javascript_path('debug') %>',<% end %>
 ];
 
 <%# Set-up the cache %>