fix: reduced memory consumption for squoosh

[alexander-akait]

This PR contains a:

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

Motivation / Use-Case

reduce memory usage

Breaking Changes

No

Additional Info

No

[codecov]

Codecov Report

Merging #279 (c9cc6b0) into master (d918fa6) will increase coverage by 0.87%.
The diff coverage is 94.82%.

@@            Coverage Diff             @@
##           master     #279      +/-   ##
==========================================
+ Coverage   85.65%   86.53%   +0.87%     
==========================================
  Files           5        5              
  Lines         509      557      +48     
  Branches      207      229      +22     
==========================================
+ Hits          436      482      +46     
- Misses         66       67       +1     
- Partials        7        8       +1     

Impacted Files	Coverage Δ
src/utils.js	77.81% <89.28%> (+0.75%)	⬆️
src/index.js	97.72% <100.00%> (+0.63%)	⬆️

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