OpenLayers 6: I can't remove ImageLayer

Question

What is the difference between adding an ImageLayer like this:

new ImageLayer({
    map: map,
});

And this:

map.addLayer(imageLayer);

I'm asking because I can't remove the layer if I pass the map to the ImageLayer in the properties.

map.removeLayer(imageLayer);

Answer 1

Unmanaged layers are not added to the layer collection, so to remove them you would need to use

imageLayer.setMap(null);

See https://openlayers.org/en/latest/apidoc/module-ol_layer_VectorImage-VectorImageLayer.html#setMap