I have a project where I need to extract Vector Smart Objects as SVGs to use on a website. I'd like to make a single file with these SVGs - it looks like IcoMoon.io will do this for you.
I've extracted each Vector Smart Object layer as an svg (right+click layer, export asset) and then uploaded the files to icomoon. The images don't seem to be recognized (getting blank icons). If I test with an SVG acquired from somewhere else, it seems to work fine.