chore: improve code quality

[ubogdan]

Describe the PR
improve code quality

Relation issue
NONE

Additional context
NONE

[codecov]

Codecov Report

Merging #1086 (cbe5e29) into master (54c9ff9) will increase coverage by 0.24%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1086      +/-   ##
==========================================
+ Coverage   94.22%   94.47%   +0.24%     
==========================================
  Files           9        9              
  Lines        2320     2316       -4     
==========================================
+ Hits         2186     2188       +2     
+ Misses         70       67       -3     
+ Partials       64       61       -3     

Impacted Files	Coverage Δ
formater.go	100.00% <100.00%> (ø)
operation.go	95.86% <100.00%> (-0.03%)	⬇️
packages.go	83.61% <100.00%> (+3.38%)	⬆️
parser.go	92.27% <100.00%> (ø)

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