fix(client): do not create or export empty files

[jordanshatford]

closes: #199

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.72%. Comparing base (0f50ab5) to head (dbd0718).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #200      +/-   ##
==========================================
+ Coverage   90.70%   90.72%   +0.02%     
==========================================
  Files          66       66              
  Lines        4000     4012      +12     
  Branches      477      477              
==========================================
+ Hits         3628     3640      +12     
  Misses        371      371              
  Partials        1        1              

Flag	Coverage Δ
unittests	90.72% <100.00%> (+0.02%)	⬆️

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