Refactor impl of Hex formatter

[Hequin0x]

No description provided.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 47.16%. Comparing base (0270012) to head (450955f).

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #13      +/-   ##
==========================================
- Coverage   47.33%   47.16%   -0.17%     
==========================================
  Files          10       10              
  Lines         319      318       -1     
==========================================
- Hits          151      150       -1     
  Misses        168      168              

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

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.