Refactor: extract targetFilePath() method

[staabm]

to ease re-use the path construction

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.67%. Comparing base (1be4361) to head (4b776e0).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #1123   +/-   ##
=========================================
  Coverage     88.67%   88.67%           
- Complexity     1388     1389    +1     
=========================================
  Files           105      105           
  Lines          4768     4770    +2     
=========================================
+ Hits           4228     4230    +2     
  Misses          540      540           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.