feat(derived_code_mappings): Support single-file paths #104663
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Fixes #86169 Remove restriction that rejected frame paths without a "/" character, allowing code mappings for root-level files like "Program.cs". When the stack path is a single file (no directory), find_roots() now returns the source prefix as the source root (e.g. bar.py maps to src/foo/ when the repo contains src/foo/bar.py).
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## master #104663 +/- ##
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+ Coverage 75.10% 80.53% +5.42%
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Files 9331 9335 +4
Lines 401056 401127 +71
Branches 25743 25743
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+ Hits 301229 323033 +21804
+ Misses 99385 77652 -21733
Partials 442 442 |
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Is this PR related to this bug I'm facing at this very moment? :) I'm having a hard time configuring source mapping for my flutter web project 😅 
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wedamija
approved these changes
Dec 10, 2025
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Fixes #86169
Remove restriction that rejected frame paths without a "/" character,
allowing code mappings for root-level files like "Program.cs".
When the stack path is a single file (no directory), find_roots() now
returns the source prefix as the source root (e.g. bar.py maps to
src/foo/ when the repo contains src/foo/bar.py).