fix(namespaces): only report when there is value emit

[JoshuaKGoldberg]

PR Checklist

• Addresses an existing open issue: fixes 🐛 Bug: Don't flag namespaces that only produce types (no value emit) #22
• That issue was marked as status: accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

Changes the rule to not report when no value emit child is found in a namespace.

Adds cached-factory as a dependency to cache checks on individual namespace nodes. Parent namespaces need to check their child namespaces.

💖

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (a454e11) to head (ccb9f57).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #27   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            6         6           
  Lines          143       174   +31     
  Branches         5        18   +13     
=========================================
+ Hits           143       174   +31     

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[github-actions]

🎉 This is included in version v0.2.1 🎉

The release is available on:

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

Cheers! 📦🚀