fix: crash when filename and algorithm options are functions

[alexander-akait]

This PR contains a:

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

Motivation / Use-Case

fixes #240

Breaking Changes

No

Additional Info

Plus update deps

[codecov]

Codecov Report

Merging #241 (b450ae7) into master (44c16e2) will increase coverage by 0.06%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #241      +/-   ##
==========================================
+ Coverage   96.39%   96.46%   +0.06%     
==========================================
  Files           2        2              
  Lines         111      113       +2     
  Branches       35       36       +1     
==========================================
+ Hits          107      109       +2     
  Misses          4        4              

Impacted Files	Coverage Δ
src/index.js	96.42% <100.00%> (+0.06%)	⬆️

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