-
Notifications
You must be signed in to change notification settings - Fork 9.3k
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Messaging for missing source maps #10598
Comments
Last one is great. Maybe unique from valid-source-maps, maybe they can be combined. And bundleduplication gets n/a if no sourcemaps, but with a warning. also we should have guidance on how to serve sourcemaps to Lighthouse but not everyone. (either |
(I was thinking via a vpn) |
I was surprised to notice lighthouse lowering my score for lack of sourcemaps on production build. Isn't this making my whole app source available to whoever opens DevTools? |
If talking about Performance score: that is based on metrics, not any specific audit or opportunity. If talking about Best Practice score: The audit
Among other things, this issue is tracking writing documentation on how to deploy source maps behind authentication. |
Got it, thank you for clarification! |
I think it's a separate audit but if LH is going to warn on missing source maps it should also have an audit for inline source maps as there's some very large ones being shipped to production - 1.7MB is the largest I've found so far |
that should be flagged by |
We're moving this down to P1.5 @connorjclark given the last progress update was more than 6 months ago. If you feel differently, please feel free to move it back :) |
Part of #10369
We want to encourage users to make source maps available by enticing them with what's possible in the report. There are a few approaches to consider:
Too prominent. Listing to rule it out.
For audits that require maps to do anything useful (ex: bundle duplication), the audit should have a warning. This should expand the audit my default and list it right after the Failing audits but before the Passed audits. The audit can't be marked N/A (otherwise it wouldn't be in the warning clump). Should it be marked as passing?
For audits that don't require maps but are improved by them, a warning is almost what we want but may come off as too loud. What if we added a "notice", like warning but they don't get added to their own clump like warnings do?
i started listing things but ran out of things at 2 ...
Oh, I remembered another.
@paulirish suggested an audit that fails if a first party JS file is >x KB (resource size) and doesn't have a map. x = 500 KB? Over time we may reduce this threshold.
Alternatively this could be added to the still-WIP
valid-source-maps
audit. The plan was to just make it informative (ex: maps are found but mappings seem invalid, not a huge deal but would make code mappings inaccurate), but it could also fail based on the above criteria.The text was updated successfully, but these errors were encountered: