fix: typescript loader

[alexander-akait]

This PR contains a:

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

Motivation / Use-Case

avoid import cosmiconfig typescript loader when no ts-node

fixes #634

Breaking Changes

No

Additional Info

No

[codecov]

Codecov Report

Patch coverage: 60.60% and project coverage change: +0.07 🎉

Comparison is base (1504cba) 89.33% compared to head (a591cde) 89.41%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #635      +/-   ##
==========================================
+ Coverage   89.33%   89.41%   +0.07%     
==========================================
  Files           5        5              
  Lines         347      359      +12     
  Branches      113      117       +4     
==========================================
+ Hits          310      321      +11     
- Misses         34       35       +1     
  Partials        3        3              

Impacted Files	Coverage Δ
src/utils.js	85.42% <60.60%> (+0.31%)	⬆️

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