iOS: JavascriptCore Exceptions when finding classes

[hborawski]

When reusing a JSContext that had already loaded JS classes, JavascriptCore would throw exceptions when walking through the dot separated classnames as JSValue can be non-nil with an underlying undefined value. Adding a check for isUndefined lets us short circuit the classname reference recursion and skip back to resource loading.

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📦 Published PR as canary version: 0.10.2--canary.577.19320

Try this version out locally by upgrading relevant packages to 0.10.2--canary.577.19320

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.76%. Comparing base (cfdf872) to head (9ffe987).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #577   +/-   ##
=======================================
  Coverage   89.75%   89.76%           
=======================================
  Files         331      331           
  Lines       19836    19840    +4     
  Branches     1949     1949           
=======================================
+ Hits        17804    17809    +5     
+ Misses       2018     2017    -1     
  Partials       14       14           

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[hborawski]

/canary