fix panic when using typed When

[ymiad]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.

Project coverage is 32.93%. Comparing base (eae816d) to head (e57b849).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
num/base.go	0.00%	1 Missing ⚠️
str/base.go	0.00%	1 Missing ⚠️
uuid/base.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #19      +/-   ##
==========================================
+ Coverage   32.20%   32.93%   +0.72%     
==========================================
  Files          24       24              
  Lines        1093     1087       -6     
==========================================
+ Hits          352      358       +6     
+ Misses        716      704      -12     
  Partials       25       25              

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