Bug 159066 – sourceMappingURL tries to load relative to document instead of script (Safari 10 / macOS 10.12)

• Component: Web Inspector
• Status: RESOLVED DUPLICATE

Created attachment 281925 [details]
Example to reproduce the bug

Safari 10 / WebKit on macOS 10.12 tries to load the source map from an incorrect location.

To reproduce:
- Unzip the attachment.
- Host it by executing 'python -m SimpleHTTPServer 1234'
- Go to http://0.0.0.0:1234
- Open the Web Inspector Console (option-cmd-C)
- Look at the errors

Observed:
- A 404 error caused by the Inspector trying to load the source map from /script.js.map (should be /scripts/script.js.map)

Expected:
- No errors (only from trying to load favicon.ico, maybe)

Notes:
This only happens with Safari 10 / macOS 10.12. Because those are not listed in Version / OS, I selected ‘Other’. I also tested with Safari 9 and STP on OS X 10.11.

[Radar WebKit Bug Importer]

<rdar://problem/26979237>

[Joseph Pecoraro]

This is behaving as expected in the latest Safari Technology Preview and trunk (r202384) for me.

[Joseph Pecoraro]

I believe this is a duplicate of: bug 157650
02c2fe3 REGRESSION: Web Inspector: Fails to load sourceMappingURL with relative URL https://bugs.webkit.org/show_bug.cgi?id=157650 <rdar://problem/26133763>

Which indeed missed the cutoff for the first macOS Seed.

*** This bug has been marked as a duplicate of bug 157650 ***