fix: improved performance

[alexander-akait]

This PR contains a:

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

Motivation / Use-Case

Lazy worker creation

Breaking Changes

No

Additional Info

Need to use 10.16 and above version of Node.js for best performance

[codecov]

Codecov Report

Merging #345 into master will increase coverage by 0.41%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #345      +/-   ##
==========================================
+ Coverage   98.20%   98.61%   +0.41%     
==========================================
  Files           3        3              
  Lines         278      289      +11     
  Branches      118      121       +3     
==========================================
+ Hits          273      285      +12     
+ Misses          5        4       -1     

Impacted Files	Coverage Δ
src/index.js	98.02% <100.00%> (+0.63%)	⬆️

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