packages: Importer use mutex

[visualfc]

No description provided.

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (8aaca44) 95.89% compared to head (b9e0989) 95.84%.
Report is 1 commits behind head on main.

Files	Patch %	Lines
packages/imp.go	80.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #385      +/-   ##
==========================================
- Coverage   95.89%   95.84%   -0.05%     
==========================================
  Files          15       15              
  Lines        6038     6043       +5     
==========================================
+ Hits         5790     5792       +2     
- Misses        189      191       +2     
- Partials       59       60       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.