[WIP] Minimal failing example

[DreierF]

Tries to use dynamic import but fails with

ERROR in closure-compiler: java.lang.IllegalArgumentException: expected one element but was: <app.67ce8540, es6-lazy.e2134c67, commonjs-lazy.28f759a0, 4.a2ce9d3a>
        at java.lang.Throwable.<init>(Throwable.java:265)
        at java.lang.Exception.<init>(Exception.java:66)
        at java.lang.RuntimeException.<init>(RuntimeException.java:62)
        at java.lang.IllegalArgumentException.<init>(IllegalArgumentException.java:52)
        at com.google.common.collect.Iterators.getOnlyElement(Iterators.java:316)
        at com.google.common.collect.Iterables.getOnlyElement(Iterables.java:254)
        at com.google.javascript.jscomp.JSModuleGraph.getRootModule(JSModuleGraph.java:307)
        at com.google.javascript.jscomp.AnalyzePrototypeProperties.<init>(AnalyzePrototypeProperties.java:125)
        at com.google.javascript.jscomp.CrossChunkMethodMotion.<init>(CrossChunkMethodMotion.java:87)
        at com.google.javascript.jscomp.DefaultPassConfig$86.create(DefaultPassConfig.java:2673)
        at com.google.javascript.jscomp.PhaseOptimizer$NamedPass.process(PhaseOptimizer.java:310)
        at com.google.javascript.jscomp.PhaseOptimizer$Loop.process(PhaseOptimizer.java:455)
        at com.google.javascript.jscomp.PhaseOptimizer.process(PhaseOptimizer.java:231)
        at com.google.javascript.jscomp.Compiler.performOptimizations(Compiler.java:2378)
        at com.google.javascript.jscomp.Compiler.lambda$stage2Passes$1(Compiler.java:793)
        at com.google.javascript.jscomp.Compiler$$Lambda$474/473740926.call(Unknown Source)
        at com.google.javascript.jscomp.CompilerExecutor$2.call(CompilerExecutor.java:102)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
        at com.oracle.svm.core.thread.JavaThreads.threadStartRoutine(JavaThreads.java:475)
        at com.oracle.svm.core.posix.thread.PosixJavaThreads.pthreadStartRoutine(PosixJavaThreads.java:199)