The following test case (from buffer.js in avatar.js) throws an NPE

Exception in thread "main" java.lang.NullPointerException
at sun.invoke.util.ValueConversions.unboxInteger(ValueConversions.java:77)
at jdk.nashorn.internal.scripts.Script$Recompilation$4$restOf$buffer.:program(buffer.js:6)
at jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:539)
at jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:218)
at jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:376)
at jdk.nashorn.tools.Shell.apply(Shell.java:386)
at jdk.nashorn.tools.Shell.runScripts(Shell.java:315)
at jdk.nashorn.tools.Shell.run(Shell.java:169)
at jdk.nashorn.tools.Shell.main(Shell.java:133)
at jdk.nashorn.tools.Shell.main(Shell.java:112)


function write() {
  charsWrittenReturn[0] = 42;
}

var charsWrittenReturn = java.lang.reflect.Array.newInstance(java.lang.Integer.class, 1);
print(charsWrittenReturn[0]);