Partial of 291

[alexander-akait]

This PR contains a:

• bugfix
• new feature
• code refactor
• test update
• typo fix
• metadata update

Motivation / Use-Case

refactor

Breaking Changes

No

Additional Info

fixes #364 + fixes edge cases for some requests

[codecov]

Codecov Report

Merging #377 (e3385c4) into master (6ae2c14) will decrease coverage by 0.84%.
The diff coverage is 81.60%.

@@            Coverage Diff             @@
##           master     #377      +/-   ##
==========================================
- Coverage   96.45%   95.60%   -0.85%     
==========================================
  Files           7        7              
  Lines         564      569       +5     
  Branches      164      172       +8     
==========================================
  Hits          544      544              
- Misses         20       24       +4     
- Partials        0        1       +1     

Impacted Files	Coverage Δ
src/utils.js	94.60% <78.66%> (-1.55%)	⬇️
src/plugins/sources-plugin.js	100.00% <100.00%> (+2.50%)	⬆️

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