Test webpack5

[alexander-akait]

This PR contains a:

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

Motivation / Use-Case

refactor test for webpack@5

Breaking Changes

No

Additional Info

ensure all works fine for webpack@5 + allow to use for webpack@5

[codecov]

Codecov Report

Merging #1023 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1023   +/-   ##
=======================================
  Coverage   99.12%   99.12%           
=======================================
  Files          10       10           
  Lines         456      456           
  Branches      129      129           
=======================================
  Hits          452      452           
  Misses          4        4

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