Extensions to Espruino for WS2812 modules

ok - I understand - first point is the best ;-)

I prefer to have JS solutions ;-)

A idea to use 3 time shift came from a snippet tve gave me, this can be used to rotate / walk like this small sample shows:

// large ring with 24 NPs
var NPs = 24;
var array = new Array(NPs*3).fill(0);
array[0] = array[1] = array[2] = 32;

function rotate() {
  array.push(array.shift());
  array.push(array.shift());
  array.push(array.shift());
}