refactor: simplify code and clear `TODO`

[erikian]

• [x] I have read the contribution documentation for this project.
• [x] I agree to follow the code of conduct that this project follows, as appropriate.
• [x] The changes are appropriately documented (if applicable).
• [x] The changes have sufficient test coverage (if applicable).
• [x] The testsuite passes successfully on my local machine (if applicable).

Summarize your changes:

[codecov[bot]]

Codecov Report

Attention: 6 lines in your changes are missing coverage. Please review.

Comparison is base (aa6fd4c) 92.03% compared to head (8d6bdc0) 91.46%.

Files	Patch %	Lines
src/packager.ts	63.63%	2 Missing and 2 partials :warning:
src/universal.ts	0.00%	2 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1649      +/-   ##
==========================================
- Coverage   92.03%   91.46%   -0.58%     
==========================================
  Files          16       16              
  Lines         854      855       +1     
  Branches      167      167              
==========================================
- Hits          786      782       -4     
- Misses         51       54       +3     
- Partials       17       19       +2     

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