rewrite helpers module

[shashi]

cc @TorkelE

[codecov-commenter]

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Codecov Report

❌ Patch coverage is 13.15789% with 33 lines in your changes missing coverage. Please review.
✅ Project coverage is 11.11%. Comparing base (9975197) to head (5b3b609).
⚠️ Report is 2043 commits behind head on master.

Files with missing lines	Patch %	Lines
src/rewrite-helpers.jl	13.15%	33 Missing ⚠️
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Additional details and impacted files

@@             Coverage Diff             @@
##           master    #1025       +/-   ##
===========================================
- Coverage   75.68%   11.11%   -64.58%     
===========================================
  Files          28       29        +1     
  Lines        3204     3356      +152     
===========================================
- Hits         2425      373     -2052     
- Misses        779     2983     +2204     

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