I have my own custom ACF block Type for use within Gutenberg. It works really well. My block has a responsive image in it. My custom ACF block can be placed within Gutenberg columns as well. I need to know the context of the block so that I can write the appropriate SIZES attribute on my picture element (so that the correct sized image is downloaded).
But I don’t know if the parent block is fullwidth, or wide, or in a single column layout, two column layout, or a three column layout.
Is there a way to know this information? I can’t see it within the scope of the block when I debug :-S
Then the template could access those properties and a suitable sizes attribute could be built.