Add support for wasmJs and take advantage of default hierarchy

[cedrickcooke]

No description provided.

[twyatt]

Isn't applyDefaultHierarchyTemplate only needed if you customize the hierarchy? Being that you've simplified it down to this very basic form, I don't think there is any customization, so we can omit applyDefaultHierarchyTemplate?

[github-actions]

Test Results

 75 files   75 suites   10s ⏱️
458 tests 447 ✅ 11 💤 0 ❌
475 runs  459 ✅ 16 💤 0 ❌

Results for commit dfcedce.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 69.79%. Comparing base (90f501c) to head (dfcedce).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #508   +/-   ##
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  Coverage   69.79%   69.79%           
=======================================
  Files           9        9           
  Lines          96       96           
  Branches        5        5           
=======================================
  Hits           67       67           
  Misses         26       26           
  Partials        3        3           

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[cedrickcooke]

Isn't applyDefaultHierarchyTemplate only needed if you customize the hierarchy? Being that you've simplified it down to this very basic form, I don't think there is any customization, so we can omit applyDefaultHierarchyTemplate?

Yes technically, but I really think this setting should be, well, a default. I don't want future work that decides to make something like a notJsMain have to scratch there head about why something else broke.