fix: reduce count of require

[alexander-akait]

This PR contains a:

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

Motivation / Use-Case

fixes #954

Breaking Changes

No

Additional Info

No

[codecov]

Codecov Report

Merging #1004 into master will increase coverage by 0.23%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1004      +/-   ##
==========================================
+ Coverage    99.3%   99.54%   +0.23%     
==========================================
  Files          10       10              
  Lines         431      435       +4     
  Branches      136      127       -9     
==========================================
+ Hits          428      433       +5     
+ Misses          3        2       -1

Impacted Files	Coverage Δ
src/utils.js	99.35% <100%> (-0.02%)	⬇️
src/plugins/postcss-import-parser.js	100% <100%> (ø)	⬆️
src/plugins/postcss-icss-parser.js	100% <100%> (ø)	⬆️
src/index.js	100% <100%> (ø)	⬆️
src/plugins/postcss-url-parser.js	100% <100%> (+1.35%)	⬆️

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