fix: get rid deprecation warnings for webpack@5

[alexander-akait]

This PR contains a:

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

Motivation / Use-Case

less deprecation warnings

Breaking Changes

No

Additional Info

No

[codecov]

Codecov Report

Merging #181 into master will decrease coverage by 1.45%.
The diff coverage is 50%.

@@            Coverage Diff             @@
##           master     #181      +/-   ##
==========================================
- Coverage   99.12%   97.66%   -1.46%     
==========================================
  Files           5        5              
  Lines         343      343              
  Branches      144      144              
==========================================
- Hits          340      335       -5     
- Misses          3        8       +5

Impacted Files	Coverage Δ
src/index.js	96.69% <50%> (-2.36%)	⬇️

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