parse variables

[adikari]

What did you implement:

Closes #12345

How did you implement it:

How can we verify it:

Todos:

• Write tests
• Write documentation
• Fix linting errors
• Provide verification config/commands/resources

[codecov-commenter]

Codecov Report

Merging #14 into master will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master       #14   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           13        13           
  Lines          136       136           
  Branches        13        13           
=========================================
  Hits           136       136           

Impacted Files	Coverage Δ
src/index.js	100.00% <100.00%> (ø)

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