fix: writing TypeScript config file

[rubiesonthesky]

PR Checklist

• Addresses an existing open issue: fixes 🐛 Bug: Writing Multi stage config results having null in include files array #2113
• That issue was marked as status: accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

• Fixes issue where null was inserted to typestat.json includes list
• Fixes issue where option was inferableTypes when it should be noInferableTypes
• Added basic testing for config generation

For future:

• Config generation is still little bit broken. If I want to select just "Remove type annotations that don't change the meaning of code" option, the generated config file does not have it but instead has just "incompleteTypes": true. -> Needs new issue created.

🐙

[codecov]

Codecov Report

Attention: Patch coverage is 88.11189% with 17 lines in your changes missing coverage. Please review.

Project coverage is 76.61%. Comparing base (881cd89) to head (27560ec).
Report is 22 commits behind head on main.

Files with missing lines	Patch %	Lines
...nitializeTypeScript/writeSingleTypeScriptConfig.ts	59.09%	9 Missing ⚠️
...initializeTypeScript/writeMultiTypeScriptConfig.ts	81.39%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2114      +/-   ##
==========================================
+ Coverage   75.50%   76.61%   +1.11%     
==========================================
  Files         177      179       +2     
  Lines        7585     7656      +71     
  Branches     1077     1086       +9     
==========================================
+ Hits         5727     5866     +139     
+ Misses       1853     1785      -68     
  Partials        5        5              

Flag	Coverage Δ
mutation	64.65% <0.00%> (-0.61%)	⬇️
unit	18.79% <88.11%> (+1.66%)	⬆️

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[JoshuaKGoldberg]

I appreciate all the added test coverage, this is great!

Requesting changes on some // @ts-expect-error removals and a bit of discussion on what might be even more existing issues with the code? (🙃)

[JoshuaKGoldberg]

🔥 This is looking great, thanks a million as usual @rubiesonthesky!

[github-actions]

🎉 This is included in version v0.8.10 🎉

The release is available on:

• GitHub releases
• npm package (@latest dist-tag)

Cheers! 📦🚀