Layer removed when moveLayer(id, beforeId?) id === beforeId

[jcozain]

if both parameters point to the same layer the layer is removed silently

example :
map.moveLayer("roads", "roads")
console.log(this.map.getStyle().layers)
roads layer will be gone

i guess it should fail or leave the layer in place

[anandthakker]

Thanks for the report, @jcozain !