fix: make lib side effects free

[ShGKme]

Initialize on the first usage instead of the module scope

[codecov]

Codecov Report

❌ Patch coverage is 88.88889% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 83.65%. Comparing base (3d02991) to head (acc465a).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
lib/locale.ts	50.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #996   +/-   ##
=======================================
  Coverage   83.65%   83.65%           
=======================================
  Files           6        6           
  Lines         208      208           
  Branches       86       86           
=======================================
  Hits          174      174           
  Misses         24       24           
  Partials       10       10           

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[susnux]

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