Allow to disable resolver

[bertho-zero]

Fix #3095

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 91.85%. Comparing base (67cc798) to head (bed542b).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
utils/resolve.js	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3096      +/-   ##
==========================================
+ Coverage   81.99%   91.85%   +9.86%     
==========================================
  Files          94       83      -11     
  Lines        4154     3573     -581     
  Branches     1395     1249     -146     
==========================================
- Hits         3406     3282     -124     
+ Misses        748      291     -457     

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[ljharb]

This seems reasonable - although I think undefined is a better choice - and it will need tests.