fix: minimize is more safely

[alexander-akait]

This PR contains a:

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

Motivation / Use-Case

fixes #269

Breaking Changes

No

Additional Info

No

[codecov]

Codecov Report

Merging #304 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #304   +/-   ##
=======================================
  Coverage   97.78%   97.78%           
=======================================
  Files           7        7           
  Lines         406      406           
  Branches      108      108           
=======================================
  Hits          397      397           
  Misses          9        9           

Impacted Files	Coverage Δ
src/plugins/minimizer-plugin.js	100.00% <ø> (ø)

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