refactor: Node.js v10 dropped

[cap-Bernardito]

This PR contains a:

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

Motivation / Use-Case

Support Node.js v10 dropped

Breaking Changes

Support Node.js v10 dropped

Additional Info

No

[codecov]

Codecov Report

Merging #151 (c90f25e) into master (01b2ab1) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #151   +/-   ##
=======================================
  Coverage   97.77%   97.77%           
=======================================
  Files           5        5           
  Lines         314      314           
  Branches       93       93           
=======================================
  Hits          307      307           
  Misses          6        6           
  Partials        1        1           

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