refactor(yaml): simplify regexp type

[timreichen]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 90.90909% with 1 line in your changes missing coverage. Please review.

Project coverage is 96.32%. Comparing base (0b59bfd) to head (39df983).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
yaml/_type/regexp.ts	90.90%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5860   +/-   ##
=======================================
  Coverage   96.31%   96.32%           
=======================================
  Files         479      479           
  Lines       38693    38682   -11     
  Branches     5628     5627    -1     
=======================================
- Hits        37267    37259    -8     
+ Misses       1382     1379    -3     
  Partials       44       44           

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[iuioiua]

Any chance you'd be able to first write tests for this code? It's currently not covered.

[iuioiua]

LGTM now that we have tests. Thank you.