STR: - Open https://www.vox.com/platform/amp/science-and-health/2017/7/25/16019892/solar-eclipse-2017-interactive-map - Open Inspector - Click one of the many [custom…] badges - Pretty-print the file (right-click tab header) - Back to Inspector, click [custom…] again AR: Jumps to minified version ER: Jumps to pretty version Console does this correctly for log sources.

How hard is this to wire up, Julian? Existing source links in Console and Inspector (events) do this correctly and we tend to underestimate how many devs depend on pretty print.

Not sure, it seems related to using the sourcemap service in order to get the URLs. I think pretty printing started notifying console and others in https://hg.mozilla.org/mozilla-central/rev/05569ef2d175 We would need similar logic on our side. Can't dig much further at the moment, maybe Nicolas can tell us if this is a big task or not.

The button's callback is here: https://dxr.mozilla.org/mozilla-central/source/devtools/client/inspector/inspector.js#2089-2091 The location here just comes directly from the actor: https://dxr.mozilla.org/mozilla-central/source/devtools/shared/fronts/node.js#322-324 So I think what you want to do is change the button callback to pass the location through the "source map URL service", in particular the `originalPositionFor` method, docs here: https://dxr.mozilla.org/mozilla-central/source/devtools/client/framework/source-map-url-service.js#183-197 The source map URL service is available on the toolbox. https://dxr.mozilla.org/mozilla-central/source/devtools/client/framework/toolbox.js#694-701 Right now, hovering in the markup view doesn't show the location of the custom element. However, if you wanted it to, then instead of `originalPositionFor`, you would want to use the source map URL service to subscribe to changes to the location. But, if you plan to leave the tooltip as-is, then you needn't bother. The hardest part of this task is (as usual...) writing the test case.

I think we have the same issue in the console with the "jump to definition" button: we don't jump to the generated location.

Hi Harald, after doing the triage version we are not confident that this could be fixed in 64. We think that the bugs listed here should be addressed first https://bugzilla.mozilla.org/show_bug.cgi?id=1484272 . Are you OK with moving this bug back to the global webcomponents backlog?

That is fine, this is affects other places. Debugger is also working on pretty print in 65, so this work might be affected by adding auto-prettyprint and should probably wait.

Pushed by nbeleuzu@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/5d2e52a68c0e Follow source maps when viewing custom element definition r=jdescottes