fix(scan-dir): handle re-export from folder index

[ineshbose]

#227

[codecov]

Codecov Report

Merging #229 (9ab798f) into main (6edec20) will decrease coverage by 0.15%.
The diff coverage is 25.00%.

❗ Current head 9ab798f differs from pull request most recent head 8a622c9. Consider uploading reports for the commit 8a622c9 to get more accurate results

@@            Coverage Diff             @@
##             main     #229      +/-   ##
==========================================
- Coverage   98.73%   98.59%   -0.15%     
==========================================
  Files          66       66              
  Lines        2765     2769       +4     
  Branches      404      405       +1     
==========================================
  Hits         2730     2730              
- Misses         35       39       +4     

Impacted Files	Coverage Δ
src/scan-dirs.ts	89.47% <25.00%> (-3.26%)	⬇️

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