"there are type errors and exceptions triggered by some scripts that really should not happen."

[increpare]

awaiting further comment

[david-pfx]

Simply run the tests and watch the console. There are 14 exceptions (see below).

One is a throw from too many errors, one is a failure in multiple ellipses. These exceptions should be caught and reported, not sent to the console.

The rest are reasonably simple type errors. See #954, and I've tracked down the rest. The fix is simple enough, but too invasive to do without consultation.

compiler.js:2914 aborting compilation
testingFrameWork.js:83 TypeError: Cannot read properties of undefined (reading 'STRIDE_MOV')
    at setGameState (engine.js:604:23)
    at compile (compiler.js:2959:9)
    at runCompilationTest (testingFrameWork.js:81:3)
    at Object.<anonymous> (tests.js:57:8)
    at Test.run (qunit-1.12.0.js:203:18)
    at qunit-1.12.0.js:361:10
    at process (qunit-1.12.0.js:1453:24)
    at next (qunit-1.12.0.js:1446:3)
compiler.js:2914 Error: Too many errors/warnings; aborting compilation.
    at TooManyErrors (parser.js:32:11)
    at logError (parser.js:67:17)
    at checkObjectsAreLayered (compiler.js:2203:17)
    at loadFile (compiler.js:2847:5)
    at compile (compiler.js:2911:21)
    at runCompilationTest (testingFrameWork.js:81:3)
    at Object.<anonymous> (tests.js:57:8)
    at Test.run (qunit-1.12.0.js:203:18)
    at qunit-1.12.0.js:361:10
    at process (qunit-1.12.0.js:1453:24)
compiler.js:2914 TypeError: Cannot read properties of undefined (reading 'layer')
    at generateExtraMembers (compiler.js:358:51)
    at loadFile (compiler.js:2817:5)
    at compile (compiler.js:2911:21)
    at runCompilationTest (testingFrameWork.js:81:3)
    at Object.<anonymous> (tests.js:57:8)
    at Test.run (qunit-1.12.0.js:203:18)
    at qunit-1.12.0.js:361:10
    at process (qunit-1.12.0.js:1453:24)
    at next (qunit-1.12.0.js:1446:3)
testingFrameWork.js:83 TypeError: Cannot read properties of undefined (reading 'STRIDE_MOV')
    at setGameState (engine.js:604:23)
    at compile (compiler.js:2959:9)
    at runCompilationTest (testingFrameWork.js:81:3)
    at Object.<anonymous> (tests.js:57:8)
    at Test.run (qunit-1.12.0.js:203:18)
    at qunit-1.12.0.js:361:10
    at process (qunit-1.12.0.js:1453:24)
    at next (qunit-1.12.0.js:1446:3)
compiler.js:2914 TypeError: Cannot read properties of undefined (reading 'push')
    at generateSoundData (compiler.js:2699:56)
    at loadFile (compiler.js:2853:5)
    at compile (compiler.js:2911:21)
    at runCompilationTest (testingFrameWork.js:81:3)
    at Object.<anonymous> (tests.js:57:8)
    at Test.run (qunit-1.12.0.js:203:18)
    at qunit-1.12.0.js:361:10
    at process (qunit-1.12.0.js:1453:24)
    at next (qunit-1.12.0.js:1446:3)
compiler.js:2914 TypeError: Cannot read properties of undefined (reading 'anyBitsInCommon')
    at levelFromString (compiler.js:476:34)
    at levelsToArray (compiler.js:505:21)
    at loadFile (compiler.js:2819:5)
    at compile (compiler.js:2911:21)
    at runCompilationTest (testingFrameWork.js:81:3)
    at Object.<anonymous> (tests.js:57:8)
    at Test.run (qunit-1.12.0.js:203:18)
    at qunit-1.12.0.js:361:10
    at process (qunit-1.12.0.js:1453:24)
    at next (qunit-1.12.0.js:1446:3)
testingFrameWork.js:83 TypeError: Cannot read properties of undefined (reading 'STRIDE_MOV')
    at setGameState (engine.js:604:23)
    at compile (compiler.js:2959:9)
    at runCompilationTest (testingFrameWork.js:81:3)
    at Object.<anonymous> (tests.js:57:8)
    at Test.run (qunit-1.12.0.js:203:18)
    at qunit-1.12.0.js:361:10
    at process (qunit-1.12.0.js:1453:24)
    at next (qunit-1.12.0.js:1446:3)
compiler.js:2914 TypeError: Cannot read properties of undefined (reading 'groupNumber')
    at processRuleString (compiler.js:678:73)
    at rulesToArray (compiler.js:897:23)
    at loadFile (compiler.js:2820:5)
    at compile (compiler.js:2911:21)
    at runCompilationTest (testingFrameWork.js:81:3)
    at Object.<anonymous> (tests.js:57:8)
    at Test.run (qunit-1.12.0.js:203:18)
    at qunit-1.12.0.js:361:10
    at process (qunit-1.12.0.js:1453:24)
    at next (qunit-1.12.0.js:1446:3)
testingFrameWork.js:83 TypeError: Cannot read properties of undefined (reading 'STRIDE_MOV')
    at setGameState (engine.js:604:23)
    at compile (compiler.js:2959:9)
    at runCompilationTest (testingFrameWork.js:81:3)
    at Object.<anonymous> (tests.js:57:8)
    at Test.run (qunit-1.12.0.js:203:18)
    at qunit-1.12.0.js:361:10
    at process (qunit-1.12.0.js:1453:24)
    at next (qunit-1.12.0.js:1446:3)
compiler.js:2914 TypeError: Cannot read properties of undefined (reading 'reverse')
    at rewriteUpLeftRules (compiler.js:991:25)
    at rulesToArray (compiler.js:933:9)
    at loadFile (compiler.js:2820:5)
    at compile (compiler.js:2911:21)
    at runCompilationTest (testingFrameWork.js:81:3)
    at Object.<anonymous> (tests.js:57:8)
    at Test.run (qunit-1.12.0.js:203:18)
    at qunit-1.12.0.js:361:10
    at process (qunit-1.12.0.js:1453:24)
    at next (qunit-1.12.0.js:1446:3)
testingFrameWork.js:83 TypeError: Cannot read properties of undefined (reading 'STRIDE_MOV')
    at setGameState (engine.js:604:23)
    at compile (compiler.js:2959:9)
    at runCompilationTest (testingFrameWork.js:81:3)
    at Object.<anonymous> (tests.js:57:8)
    at Test.run (qunit-1.12.0.js:203:18)
    at qunit-1.12.0.js:361:10
    at process (qunit-1.12.0.js:1453:24)
    at next (qunit-1.12.0.js:1446:3)
compiler.js:2914 aborting compilation
testingFrameWork.js:83 TypeError: Cannot read properties of undefined (reading 'STRIDE_MOV')
    at setGameState (engine.js:604:23)
    at compile (compiler.js:2959:9)
    at runCompilationTest (testingFrameWork.js:81:3)
    at Object.<anonymous> (tests.js:57:8)
    at Test.run (qunit-1.12.0.js:203:18)
    at qunit-1.12.0.js:361:10
    at process (qunit-1.12.0.js:1453:24)
    at next (qunit-1.12.0.js:1446:3)