I know this is old but I am also working on adding a block using Poet @Twansparant . See Sage 10 + Poet block - Not loading . It seems I need to add edit.js and edit.css for my block , but I am not clear on how. I could add these to
resources/scripts/editor.jsresources/styles/editor.css
but I assume we do a separate JS at least as well as a save.js per block. How did you add these to your theme?