As other commenters have mentioned, Source Maps are the solution to this problem in general. The main reason we don't yet allow signup to RescueJS is that "create a source map" is currently beyond the state of the art for web frameworks. You can't "just" do it.
Over the weekend we spent a few hours trying to hook source maps into the asset pipeline for Rails based on https://github.com/sstephenson/sprockets/pull/311 and upgrading the 'uglifier' rubygem to work with UglifyJS2. We didn't manage to get it quite working within the time limit, but we'll try and push our work-in-progress upstream to get this ball moving again.
In Rescue.jssstephenson
sprockets
Developer Tools2009–2014
sstephenson / sprockets · Archived
sprockets
Rack-based asset packaging system
12Distinct people
14Mentions
0Explicit recommenders
2.5KGitHub stars
What to know before exploring
What it is
Rack-based asset packaging system
GitHub
Where it is used
No documented product use was verified in the last source check.
What people are saying
No recommendation phrase was found in the indexed comments.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
No other repository is repeatedly linked in the same discussions.
This week on Hacker News
Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 8:01:28 AM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year14 dated mentions
Observed mentions: 2009-09-22 04:43:33 UTC to 2014-07-27 15:17:24 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2009 | 2009-01-01 00:00:00 UTC | 2010-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2010 | 2010-01-01 00:00:00 UTC | 2011-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2011 | 2011-01-01 00:00:00 UTC | 2012-01-01 00:00:00 UTC | 5 | 1 | 4 |
| 2012 | 2012-01-01 00:00:00 UTC | 2013-01-01 00:00:00 UTC | 3 | 0 | 3 |
| 2013 | 2013-01-01 00:00:00 UTC | 2014-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2014 | 2014-01-01 00:00:00 UTC | 2015-01-01 00:00:00 UTC | 4 | 1 | 3 |
From the project README
An excerpt from the repository, fetched Nov 13, 2026.
Read the project’s introduction
This repository was moved to https://github.com/rails/sprockets
Read the full README on GitHubWhat Hacker News says
3 sourcesHappens already. Two examples:
1. Internet Explorer has conditional comments - http://msdn.microsoft.com/en-us/library/ms537512%28v=vs.85%2...
2. Sprockets' directive processor uses directives in comments. https://github.com/sstephenson/sprockets
In Douglas Crockford: Why I removed comments from JSONSimilarly, we concatenate our JS with sprockets[0] -- so what's on line 50 of module.js in the pre-compiled code base may be on line 1350 of app.js in the browser.
0 : https://github.com/sstephenson/sprockets
In Ask HN: JavaScript Dev Tools