refactor: loader

[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

No

[codecov]

Codecov Report

Merging #950 into master will decrease coverage by 0.16%.
The diff coverage is 99%.

@@            Coverage Diff            @@
##           master    #950      +/-   ##
=========================================
- Coverage   98.77%   98.6%   -0.17%     
=========================================
  Files          10      10              
  Lines         409     431      +22     
  Branches      126     133       +7     
=========================================
+ Hits          404     425      +21     
- Misses          5       6       +1

Impacted Files	Coverage Δ
src/utils.js	99.4% <100%> (+0.17%)	⬆️
src/index.js	97.56% <90%> (-2.44%)	⬇️

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