"compiled"; Error: NewExpression is not implemented yet

Mon 2018.10.01

Just attempted "compiled"; just after the function name line inside a class, as in the example.

https://www.espruino.com/Compilation

How do I use it?
Simply get your function working as you want it to,
and then add the string "compiled"; to the very front of it:

foo(a,b) {
  "compiled";

}

But am faced with:

1v99 (c) 2018 G.Williams
>WARNING: Function marked with "compiled" uploaded in source form
---------------------------------------------------
                                 COMPILER MESSAGE
---------------------------------------------------
Error: NewExpression is not implemented yet
---------------------------------------------------
=undefined
>

Is this supported for class functions?

1v99 on an authentic Pico

EDIT Tue 2018.10.02

After many divide and conquer attempts;

"NewExpression" seems to refer to:

var ary = new Uint8ClampedArray(16);

and not "compiled"; despite the function actually working as expected.